Publications
| Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
|---|
| [treatment of osteoid osteoma with ct-guided drilling and ethanol instillation]. | for 6 months a 25-year-old man had been suffering from intermittent pain in the left upper leg, alleviated by aspirin. physical examination was unremarkable: local pain was not elicited. | 1997 | 9162624 |
| reconstruction of human maxillary defects with nacre powder: histological evidence for bone regeneration. | the defective areas in the premolar-molar region of maxillary alveolar bone of eight patients were reconstructed using powdered nacre from the giant oyster pinctada maxima. histological, microradiographic and polarized light studies of drill biopsies taken 6 months postoperatively showed that nacre was tightly bound to newly-formed bone. the nacre was gradually and centripetally biodissolved and replaced with immature and then mature lamellar bone. these results are in agreement with our previou ... | 1997 | 9183443 |
| internal fixation strength of suture anchors--update 1997. | two new areas of anchor development are biodegradable anchors and "mini" anchors. the group of biodegradable anchors tested include the bio-anchor, lactosorb, biofix, bio-statak, mini screw suture anchor, depuy 4.5 molded, depuy 4.5 machined, depuy 3.5 machined, tag wedge 4, tag rod 2, tag wedge 3, tag wedge 2, and stealth. "mini anchors" have drill holes or minor diameters of < 2.2 mm. those tested include the mini revo and bio-anchor, miniharpoon, mini mitek and fast in 3, statak 1.5 and 2.5, ... | 1997 | 9195034 |
| temperature rise during drilling through bone. | temperature was measured during drilling in bovine cortical bone specimens. a surgical drill fitted with a custom-designed speedometer and mounted on a drill press was used to drill holes at one speed, 49,000 rpm, and at forces in the range of 1.5 to 9.0 n. the resulting temperatures were recorded by thermocouples placed at various locations. the distribution of maximum local temperature rise (delta t) was best fitted by the function delta t = ar-b, where r is the distance from the center of the ... | 1997 | 9197099 |
| mechanical and histologic evaluation of ca-p plasma-spray and magnetron sputter-coated implants in trabecular bone of the goat. | to aim of this study was to investigate the bone response to calcium phosphate (ca-p) plasma-spray and radiofrequency magnetron sputter-coated implants with comparable roughness. therefore, tapered conical screw designed implants were installed in the trabecular bone of the femurs of nine goats. they were provided with two types of coatings, a plasma-spray dual coating of fluorapatite and hydroxyapatite (fa/ha-ps) and a titanium plasma-spray coating, covered with an amorphous ca-p magnetron sput ... | 1997 | 9212391 |
| analysis of a semitendinosus autograft in a rabbit model. | the purpose of this study was to evaluate the histologic and biomechanical changes that occur between 12 and 52 weeks in an intraarticular, semitendinosus autograft placed through tibial and femoral drill holes in a rabbit model. the results of this study show that, in this rabbit model, the soft tissue graft maintained its biologic fixation in the osseous tunnel when stressed to failure at 1 year. the bony fixation occurred by the formation of an indirect tendon insertion, and this formation wa ... | 1997 | 9240991 |
| experimental sensorineural hearing loss following drill-induced ossicular chain injury. | in a guinea pig model, a standardized drill-induced injury to the body of the incus was applied, and the effects on hearing were characterized by electrocochleography. drilling resulted in a threshold shift within seconds, and after 15 min it averaged 35.7 db for clicks, 35 db nhl for 4 khz bursts, 36.7 db nhl for 6 khz bursts and 39 db nhl for 8 khz bursts. the deterioration of the threshold shift remained stable throughout the 5-week post-operative observation period. in five animals a disarti ... | 1997 | 9288202 |
| [infection with legionella pneumophila among workers of polish sea drilling platforms]. | the epidemiology, clinic, diagnostic dates and treatment of legionella pneumophila (l. pneumophila) were discussion. the our study were removal in 246 workers seas drill platforms. the antibody opposed of l. pneumophila were mean in 54 with 246 workers. investigation were execution into conjunction of specifically job and life workers and frequently appearance of bronchitis. the antibody l. pneumophila were detection in 25% persons. these dates may suggest possibilities of l. pneumophila infecti ... | 1997 | 9297350 |
| anterior thoracic corpectomy without sternotomy: a strategy for malignant disease of the upper thoracic spine. | with increasing frequency, spine surgeons are being asked to provide decompression and stabilization in patients with spinal metastases. while no region of the spine is easily treated, the upper thoracic spine is perhaps the least accessible. traditional approaches to this region involve either thoracotomy or at least limited sternotomy. the authors present an approach to anterior pathology of the upper thoracic spine that obviates the need for sternotomy. | 1997 | 9309285 |
| reconstruction of calvarial defects by bioresorbable ceramics: an experimental study in rats. | this study evaluated bioresorbable ceramics in the reconstruction of calvarial defects. full-thickness defects were made in the calvaria of 40 adult sprague-dawley rats (350-450 g) with a standard 8-mm trephine drill. three different materials were used for defect repair: (a) pure alpha-tricalcium phosphate (tcp), (b) surface-treated glass ceramic, (c) surface-treated glass ceramic plus 70/30 l/dl polylactic acid (volume ratio 45/55). the implants were pellets of 7.9 mm diameter and 2 mm thickne ... | 1997 | 9384790 |
| long-term effects of core decompression by drilling. demonstration of bone healing and vessel ingrowth in an animal study. | avascular necrosis of the femoral head is associated with bone marrow hyperpression. although core decompression by drilling is an accepted treatment regimen, until today no experimental results exist concerning the physiological effects of this procedure. published clinical data are controversial. in an animal study marrow decompression was carried out by drilling of both hips in 18 healthy male sheep. in the right hip of each animal a resorbable stent was implanted in order to prolong the dura ... | 1997 | 9394955 |
| evaluating the motions of a semi-submersible platform with respect to human response. | the motions of a semi-submersible drilling platform have been evaluated so as to predict the effects on the comfort and activities of the crew. the horizontal motions at the drill floor exceeded the 'average threshold of perception' defined in international standard 6897 (iso 6897, 1984) by more than a factor of two; they were about half of the limit for the worst 10 min in five years for 'fixed offshore structures where work of a somewhat critical nature is carried out'. other standards predict ... | 1997 | 9414357 |
| [ossicular coupling of an implantable hearing aid transducer using an er:yag laser]. | special coupling devices made of pure gold or titanium have been developed to connect a new implantable hearing aid transducer (tübingen implant) to the ossicular chain. they allow piezotransducer probe-tip connection to the long process of the incus or the stapedial head. similar to the design of conventional porps (partial ossicular replacement prostheses), the coupling devices can be fixed at the ossicular chain, e.g., with the eye loop of stapedial piston prostheses or the bell element of go ... | 1997 | 9445859 |
| erbium:yag and holmium:yag laser root resection of extracted human teeth. | root resection of extracted human teeth was performed using the erbium:yag (er:yag) and holmium:yag (ho:yag) laser to investigate the clinical application of lasers on hard tissue. the co2 laser and the mechanical drill were also used for comparison. after resection using these technologies, the morphological changes of the cut surface were investigated by optical and scanning electron microscope. er:yag laser irradiation produced smooth, clean resected surfaces without signs of thermal damages. ... | 1997 | 9467336 |
| thermographic assessment of heat generated on the root surface during post space preparation. | the mechanical preparation of a post space in a root filled tooth is commonly carried out using rotating instruments in a slow handpiece. this procedure creates frictional heat which may be transferred to the root surface. in this investigation, the temperature changes on the root surface of 12 root filled, extracted human premolar teeth during preparation of post spaces were analysed using an infrared thermal imaging camera. a rotational speed of 8000 r.p.m. was used and the teeth were prepared ... | 1997 | 9477803 |
| analysis of bone formation after cranial osteotomies with a high-speed drill. | ten new zealand white 22-week-old rabbits were divided into two groups of five each. the midas rex drill with a c-1 drill bit was used to make a full-thickness sagittal osteotomy 2 cm in length. a b-5 bit and footplate attachment were used to make a 2-cm linear osteotomy parallel to the first. four drill holes 1 mm in diameter were made over the nasal bones on the ipsilateral side. in group a animals, half of the skull had no irrigation; the other half of the skull was irrigated with room temper ... | 1997 | 9477832 |
| effects of drill speed on heat production and the rate and quality of bone formation in dental implant osteotomies. part i: relationship between drill speed and heat production. | the amount of heat produced by dental implant osteotomy (receptor site) preparation at different speeds and the effects of heat production on the prognosis of implant treatment are controversial. in part i of this two-part study, heat production was measured in vivo during osteotomy preparation at low (maximum 2,000 rpm), intermediate (maximum 30,000 rpm), and high (maximum 400,000 rpm) speeds in the rabbit tibia, and an inverse relationship was observed between drill speed and heat production. ... | 1997 | 9495159 |
| effects of drill speed on heat production and the rate and quality of bone formation in dental implant osteotomies. part ii: relationship between drill speed and healing. | in part i of this two-part study, the authors investigated heat production during osteotomy drilling at three different speeds, and determined that high-speed drilling produced the least heat when using 700 xl carbide burs. part ii of the study histologically examines the rate and quality of healing after drilling osteotomies at the three speeds in the mandible. osteotomies were histologically examined 2, 4, and 6 weeks postoperatively. histologic findings suggested that in the initial 6 weeks, ... | 1997 | 9495174 |
| repetitive order and the human walking apparatus: prussian military science versus the webers' locomotion research. | the addition of 'fire' to the european battle repertoire resulted in the close-order drill for manoeuvres of the line. begun in late sixteenth-century netherlands and perfected in eighteenth-century prussia under frederick the great, the drill's precision marching evolved into a military science which conceived what infantry acquired through rigorous training as a lawful 'second nature' of men. in contrast, the liberal webers' 1836 locomotion research orientation was, as was that of french skirm ... | 1997 | 11619506 |
| [effect of cultivating measures on the tuber yield of curcuma longa l]. | the effect of cultivating measures on the tuber yield of curcuma longa was observed. dibble planting has been proved move effective in raising the tuber yield than drill culture, and the dibble planting quantity has no effect on the tuber. the rational producing area, soil, seed tuber and so on were selected according to the experiments. | 1997 | 10743196 |
| bone remodelling in the pores and around load bearing transchondral isoelastic porous-coated glassy carbon implants: experimental study in rabbits. | cylinders of porous-coated glassy carbon were implanted into drill holes made through the articular surface of the medial condyle of both tibiae of ten rabbits for six and 12 weeks. bone ingrowth and remodelling was examined by radiographic, histologic, oxytetracycline-fluorescence and microradiographic methods. bone ingrowth into pores and load bearing implants was seen by all examination methods. bone ingrowth occurred earlier when the pores were facing cancellous bone than cortical bone. appo ... | 1998 | 15348848 |
| the value of methylprednisolone in the treatment of an experimental sensorineural hearing loss following drill-induced ossicular chain injury: a randomized, blinded study in guinea-pigs. | in a previously established animal model a standardized drill-induced injury to the body of the incus was applied, and the effects on hearing were characterized by electrocochleography. in a placebo-controlled, randomized, blinded study methylprednisolone showed no protective effect in reducing or improving the auditory threshold shifts, which occurred within seconds after drilling and remained stable throughout the 5-week observation period. therefore the otologic surgeon must pay close attenti ... | 1998 | 9504163 |
| a new mechanical aiming device for the placement of distal interlocking screws in femoral nails. | although the free-hand technique remains the most popular method for distal interlocking screw insertion, a proximally mounted "radiation-independent" device which compensates for implant deformation has been developed. in 15 intact human cadaveric femora the same surgeon performed statically locked intramedullary nailing using the distal aiming system. operation time, distal screw insertion, total radiation time and accuracy of the interlocking screw placement were measured using a radiation-in ... | 1998 | 9521519 |
| in vitro pullout strength of screws inserted in adult equine third metacarpal bone after overdrilling a 4.5-mm threaded insertion hole. | to determine and compare the in vitro pullout strength of 5.5-mm cortical versus 6.5-mm cancellous bone screws inserted in the diaphysis and metaphysis of adult equine third metacarpal (mciii) bones, in threaded 4.5-mm cortical bone screw insertion holes that were then overdrilled with a 4.5-mm drill bit to provide information relevant to the selection of a replacement screw if a 4.5-mm cortical screw is stripped. | 1998 | 9525030 |
| [integration properties of bone substitute materials. experimental studies on animals]. | in order to avoid the potential risks of disease transmission in allograft surgery, numerous substitute materials have been described. as the biological response to implant materials is different, we undertook the following study to assess type and amount of bone ingrowth in cap-ceramics. 105 cylindrical bone defects with a diameter of 5.4 mm were created surgically in the femoral condyles of 53 skeletal mature nzw rabbits. the defects were filled with crushed coralline hydroxyapatite (ha) impla ... | 1998 | 9530667 |
| [bone regeneration stimulated by bone substitute materials]. | prompted by severe problems in autogeneic and allogeneic bone transplantation, intensive efforts were made to find sufficient substitutes. a main demand on these materials, especially in healing of osseous defects, is to achieve results comparable to those of auto- or allografts. these must be related to their biomechanical and particularly to their biological properties, i.e. the ability to form new bone, osseous integration and physiological remodeling. within different trials in the tibiae of ... | 1998 | 9530668 |
| the influence of transphyseal drilling and tendon grafting on bone growth: an experimental study in the rabbit. | the undulating area of the distal femoral physis has been measured in new zealand white rabbits, by using an image analyzer in histologic sections, and correlated to radiographic measurements. the relative size of a physeal drill injury necessary to cause growth disturbance has been found to be 7-9%. a transphyseally placed tendon, even as a free graft, prevented solid bone-bridge formation in the drill hole and growth disturbance. the results are of possible clinical significance. | 1998 | 9531394 |
| influence of different pilot hole sizes on torque measurements and pullout analysis of osteosynthesis screws. | when screws are inserted in thick cortical bone, a small pilot hole size, corresponding to the core diameter of the screw, can result in high torsional stress, leading to screw fracture. the aim of this study was to enlarge the drill size up to a critical pilot hole size (cphs) which, if exceeded, means a rapid decrease in the screw holding power. 1.5 and 2 mm titanium screws were inserted in discs of polyvinylchloride (pvc), wood and porcine mandibular bone with thicknesses differing between 2 ... | 1998 | 9563595 |
| type-ii external fixation, using new clamps and positive-profile threaded pins, for treatment of fractures of the radius and tibia in dogs. | a new external fixation system for repair of fractures of the radius and tibia was developed that uses positive-profile threaded pins. this system allows for addition of a fixation clamp between 2 installed clamps, predrilling of pin holes through a drill sleeve, use of positive-profile threaded pins in all locations, and easier application of full pins. type-ii external fixators were applied, using this system, to fractures in 10 client-owned dogs, and outcome was evaluated. all fractures heale ... | 1998 | 9569167 |
| successful use of a laser for human embryo biopsy in preimplantation genetic diagnosis: report of two cases. | the use of tyrode's acid to drill the zona pellucida for embryo biopsy is the most widely used methodology in preimplantation genetic diagnosis. instead of this, we propose the use of a 1.48-micron diode noncontact laser, which is quicker, simpler, and safer. | 1998 | 9604764 |
| pullout strength of adaption screws in thyroid cartilage. | to determine the pullout strength of adaption screws in laryngeal cartilage and its relationship to drill hole and screw diameter. | 1998 | 9617925 |
| [effect of the diameter of various bore holes on retention of osteosynthesis screws]. | the standard drill size for most osteosynthesis screws is about 75% of the screw's external diameter. when screws are inserted in thick cortical bone, a small pilot hole size can result in high torsional stress, leading to screw fracturing. the aim of this study was to enlarge the drill size up to a critical pilot hole size, exceeding of which leads to a rapid decrease of the screw's holding power. titanium screws of diameter 1.5 and 2 mm were inserted in discs of pvc, wood and porcine mandibula ... | 1998 | 9658803 |
| fragmented coronoid process and incomplete ossification of the humeral condyle in a rottweiler. | to describe incomplete ossification of the humeral condyle and fragmentation of the medial coronoid process in a rottweiler. | 1998 | 9662779 |
| the bone growing chamber: a new model to investigate spontaneous and guided bone regeneration of artificial defects in the human jawbone. | spontaneous bone repair and regeneration of jawbone defects have been insufficiently studied in the dental literature. the present study analyzes a new human model designed to evaluate the basis for spontaneous bone regeneration in human jawbones. hollow titanium cylinders, termed "bone growing chambers," were prepared with commercially pure titanium. ten volunteers undergoing routine implant surgery were enlisted. a properly calibrated drill was used to prepare the bone-growing-chamber bed. the ... | 1998 | 9663093 |
| influence of inflammation-mediated osteopenia on the regional acceleratory phenomenon and the systemic acceleratory phenomenon during healing of a bone defect in the rat. | we have previously shown that restoration of a local bone defect in the rat not only leads to a regional acceleratory phenomenon (rap), but also to a systemic acceleration of osteogenesis (sap) at distant sites of the skeleton. in this study, we investigated whether specific inhibition of osteoblasts would affect the local rap and the systemic acceleratory phenomenon (sap) healing sites. systemic inhibition of osteoblasts was induced by inflammation-mediated osteopenia (imo), a nonspecific type ... | 1998 | 9685523 |
| the synthetic hydroxyapatite implant: a report on 65 patients. | sixty-five patients receiving the fci synthetic hydroxyapatite implant (fci3, fci, issy-les-moulineaux, france) after enucleation, evisceration, or as a secondary implant were studied under human trial guidelines established by health and welfare canada. the implant is chemically identical to the original coralline bio eye (integrated orbital implants inc., san diego, ca, u.s.a.), is easy to work with, and was implanted without difficulty using a wrap of polygalactin 910 (vicryl mesh, ethicon, i ... | 1998 | 9700732 |
| drill free screws: a new form of osteosynthesis screw. | although the application of self-tapping and non self-tapping screws is virtually universal in cranio-maxillofacial surgery, the inevitable, time consuming procedure of drilling a pilot hole has some potential disadvantages, such as damage to nerves, tooth roots or tooth germs, thermal necrosis of the bone and drill bit breakage. drill free screws (dfs) are a recently developed type of osteosynthesis screws, having a tip like a cork screw and specially formed cutting flutes which enable insertio ... | 1998 | 9702635 |
| inorganic phosphate content and free energy change of atp hydrolysis in regional short-term hibernating myocardium. | short-term myocardial hibernation is characterized by an adaptation of contractile function to the reduced blood flow, the recovery of creatine phosphate content and lactate balance back towards normal, whereas atp content remains reduced at a constant level. we examined the hypothesis that, despite the absence of atp recovery, the short-term hibernating myocardium regains an energetic balance. | 1998 | 9798517 |
| a novel simian immunodeficiency virus (sivdrl) pol sequence from the drill monkey, mandrillus leucophaeus. | the drill monkey has been shown by serology and pcr to harbor a unique simian immunodeficiency virus (sivdrl). a pol sequence, amplified from uncultured peripheral blood cells, is most closely related to the equivalent siv sequences from the red-capped mangabey (sivrcm), the sabaeus african green monkey (sivagmsab), and the chimpanzee (sivcpz) and to the human immunodeficiency virus type 1 (hiv-1) sequence of humans. it is as yet unclear whether sivdrl has a mosaic genome like sivrcm and sivagms ... | 1998 | 9811781 |
| angiogenesis in transmyocardial laser revascularization. a nonspecific response to injury. | the mechanism of action of transmyocardial laser revascularization (tmr) is poorly understood. tmr has been shown to stimulate angiogenesis in porcine and canine myocardium. | 1998 | 9852882 |
| preliminary in vivo report on the osteocompatibility of poly(anhydride-co-imides) evaluated in a tibial model. | a novel class of polymers with mechanical properties similar to cancellous bone are being investigated for their ability to be used in weight-bearing areas for orthopedic applications. the poly(anhydride-co-imide) polymers based on poly[trimellitylimidoglycine-co-1,6-bis(carboxyphenoxy)hexan e] (tma-gly:cph) and poly[pyromellitylimidoalanine-co-1,6-bis(carboxyphenoxy)hexa ne] (pma-ala:cph) in molar ratios of 30:70 were investigated for osteocompatibility, with effects on the healing of unicortic ... | 1998 | 9855196 |
| comparison of surgically attached and non-attached repair of the rat achilles tendon-bone interface. cellular organization and type x collagen expression. | the effects of surgical repair versus non-repair on cell morphology and type x collagen expression were investigated using a rat model of achilles tendon avulsion. the animals were divided into four groups. in group 1, tendon was reattached to the original attachment site by suturing through a drill hole in the calcaneus; in group ii, tendon was not reattached and a drill hole was not made; in group iii, tendon was not reattached but a drill hole was made; and the animals in group iv were sham o ... | 1998 | 9862222 |
| wound management of the airway mucosa: comparison with skin in a rabbit model. | in comparison to the extensive study of skin wound healing, there have been few reports investigating mucosal wound healing. our primary objective was to compare the natural progression of wound healing in airway mucosa to skin in a rabbit model. split-thickness skin wounds and subglottic mucosal wounds created by drill injury were compared on days 0, 1, 3, 5, 7, 14 and 21 after injury. histologic examination was performed by a veterinary pathologist blinded to sample identity. subglottic wounds ... | 1998 | 9865439 |
| noncontact er:yag laser ablation: clinical evaluation. | the aim of this study is to evaluate the quality of laser ablation in comparison with the classical drilling preparation. | 1998 | 9893509 |
| repair of large full-thickness articular cartilage defects with allograft articular chondrocytes embedded in a collagen gel. | full-thickness articular cartilage defects are a major clinical problem; however, presently there is no treatment available to regeneratively repair these lesions. the current therapeutic approach is to drill the base of the defect to expose the subchondral bone with its cells and growth factors. this usually results in a repair tissue of fibrocartilage that functions poorly in the loaded joint environment. the use of phenotypically appropriate chondrocytes embedded in a collagen gel delivery ve ... | 1998 | 9916174 |
| radiation-induced impairment of bone healing in the rat femur: effects of radiation dose, sequence and interval between surgery and irradiation. | impairment of osseous healing in treatment combining surgery and radiotherapy is a frequent complication. its dependence on sequence and interval was studied in a defined experimental model. | 1998 | 9925245 |
| modification of a mechanical twist drill trephine for craniostomy in trauma patients. | a commercially available mechanical twist drill system was modified and evaluated in 35 craniotomies for frontal ventriculostomy in 31 trauma patients. the modified mechanical twist drill enabled faster and seemingly easier and safer craniotomy. it can be used as a safer alternative to common mechanical twist drill trephines, and is particularly recommended in difficult emergency conditions. | 1999 | 10048067 |
| in vivo model for the experimental manipulation of calcified tissues: a surgical approach for accessing the odontogenic organ and associated tissues of the rat incisor. | the tooth organ is extensively used in developmental biology to investigate organogenesis and cell differentiation. it also represents an advantageous system for the study of the various cellular and extracellular matrix events that regulate the formation of both collagenous and noncollagenous calcified tissues. this article describes an in vivo surgical approach to access and experimentally manipulate the tooth organ and supporting tissues of the rat incisor. by use of a dental drill, a "window ... | 1999 | 10075520 |
| ossification of the cervical anterior longitudinal ligament contributing to dysphagia. case report. | the authors evaluated the clinical, radiological, and surgical management of ossification of the anterior longitudinal ligament (oall) that contributed to dysphagia in a patient with simultaneous cervical ossification of the posterior longitudinal ligament (opll). a 57-year-old man presented with increasing dysphagia and moderate myelopathy. imaging studies, including esophagoscopy, revealed marked esophageal compression due to oall that extended between the c2-5 levels and significant c5-7 opll ... | 1999 | 10199261 |
| insulinlike growth factor 1- and 2-augmented collagen gel repair of facial osseous defects. | defects of the facial bone structure are common problems for the facial plastic surgeon. native type 1 collagen gels (t1cgs) have been shown to mediate repair of facial critical-size defects in rat models. | 1999 | 10208684 |
| assessment of u.s. helicopter emergency medical services' planning and preparedness for disaster response. | helicopter emergency medical services (hems) roles in disaster response vary significantly from routine operation, and as reported in the literature, such responses have not been without difficulty. we identified nine criteria (written policy, triage and incident command training disaster drill participation, ground and air communications plan, critical incident stress management, annual review, policy sharing) that may significantly affected an air medical program's disaster preparedness, respo ... | 1999 | 10345779 |
| physeal response to absorbable polydioxanone bone pins in growing rabbits. | absorbable fixation materials would seem especially useful for treating transphyseal fractures in growing children, but their degradation products may affect physeal growth. the histologic response of an open physis to placement of transphyseal, polydioxanone (pds), bioabsorbable pins was studied in skeletally immature new zealand white rabbits. a 1.3-mm pds pin was inserted across the right femoral physis, and a 1.3-mm empty drill hole across the left femoral physis served as a control. the ani ... | 1999 | 10398022 |
| laser-assisted hatching in assisted reproduction. | the use of a 1.48 um diode laser for assisted hatching was investigated in animal experimentation. laser assisted hatching was offered to patients with advanced maternal age to evaluate a possible benefit. | 1999 | 10411968 |
| use of recombinant human bone morphogenetic protein-2 to enhance tendon healing in a bone tunnel. | this study examines the hypothesis that recombinant human bone morphogenetic protein-2 can enhance bone ingrowth into a tendon graft placed into a bone tunnel. we transplanted the long digital extensor tendon into a drill hole in the proximal tibia in 65 adult mongrel dogs. we applied two different doses of the bone morphogenetic protein to the tendon-bone interface in one limb using an absorbable type i collagen sponge carrier and only the collagen sponge to the contralateral (control) limb. th ... | 1999 | 10424218 |
| port-access first-rib resection. | we have developed a thoracoscopic first rib resection technique for treatment of thoracic outlet syndrome (tos), employing new instruments designed for endoscopic surgery. a 49-year-old man with paget-schroetter syndrome was treated bilaterally, and a 25-year-old woman with neurologic symptoms was treated on the right side by thoracoscopic approach via three ports. harmonic scalpel, endoscopic elevators, rongeurs, and an endoscopic drill were used. in two patients, approximately 80% of the first ... | 1999 | 10449860 |
| effect of feed rate and drill speed on temperatures in equine cortical bone. | to examine the amount of heat generated in equine cortical bone by a 6.2-mm drill, using low- and high-speed and controlled feed rate drilling. | 1999 | 10451201 |
| effect of a poly(propylene fumarate) foaming cement on the healing of bone defects. | regeneration of skeletal tissues has been recognized as a new means for reconstruction of skeletal defects. we investigated the feasibility of an injectable and expandable porous implant system for in situ regeneration of bone. therefore, a composite biodegradable foaming cement based on poly(propylene fumarate) was injected into a critical size defect made in the rat tibia. animals were divided into two groups comparing the foam in the experimental group against sham-operated animals having a d ... | 1999 | 10477853 |
| transmyocardial laser revascularisation has no beneficial effect on high energy phosphates and lactate content during acute myocardial ischaemia in pigs. | transmyocardial laser revascularisation (tmlr) is used to treat endstage coronary heart disease. there is evidence that angina is significantly reduced after tmlr. however, the precise mechanism by which symptoms disappear remains unknown. the objective of the present study was to examine the potential effects of tmlr on high-energy phosphates and myocardial perfusion in an acute ischaemic model. | 1999 | 10485411 |
| bioabsorbable suture anchor (co-polymer 85/15 d,l lactide/glycolide) implanted in bone: correlation of physical/mechanical properties, magnetic resonance imaging, and histological response. | a novel bioabsorbable suture anchor has been introduced for shoulder rotator cuff surgical repair made of the co-polymer 85/15 d,l lactide/glycolide. previous clinical reports on the use of this material in anterior cruciate ligament reconstruction have described intraosseous edema at various time intervals following implantation. the purpose of this study was to analyze the implant's loss of physical properties and to correlate magnetic resonance imaging (mri) finding with gross and histologica ... | 1999 | 10524817 |
| suture anchors--update 1999. | new suture anchors continue to become available. our prior reports on the pullout strength of over 50 different anchors is supplemented by a similar test conducted on 25 additional new anchors. this anchor comparison, using an established protocol in fresh porcine femurs, recorded failure strength, failure mode (anchor pullout, suture eyelet cutout, or wire breakage), eyelet size, minor and major diameters, and drill hole sizes. these new anchors were tested in diaphyseal cortex, metaphyseal cor ... | 1999 | 10524819 |
| [experimental stability of a new implant-free fixation technique in acl replacement]. | the purpose of the study is to establish data on the stability of an acl replacement. in 40 human cadaver knees, either a mid patellar ligament third with a trapezoid bone block on one side was fixed on the femoral side in a 2-diameter drill hole, or a conventional interference screw fixation was applied. average primary stability amounted to 570 n (+/- 100 n) for the bone-blocking technique, and to 402 n ( +/- 79 n) for the interference screw fixation. when statistically tested by variance anal ... | 1999 | 10525623 |
| [mechanical evaluation of a ligament fixation system for acl reconstruction at the tibia in a canine cadaver model]. | excellent fixation of an artificial ligament in bone is mandatory for initial stability. acl reconstruction with the lars artificial ligament may fail if anchorage to bone is inadequate. the weak metaphyseal bone of the proximal tibia is prone to inadequate fixation. this study evaluates the initial mechanical stability of two techniques with an interference screw on the tibial side of an acl reconstruction with the lars ligament. | 1999 | 10584385 |
| [morphological changes in the stria vascularis and hair cells after mastoid-vibration using a cutting bur]. | severe sesorineural deafness develops occasionally after tympanoplasty. since a vibration induced by the drill during surgery is thought to be one of the cause, we examined its effect on the inner ear in this study. five guinea pigs aged about 1 month were used. the right ear of each animal was used as the control, and the left ear underwent stimulation with the drill induced vibration. the vibration was applied to the temporal bone for 60 seconds using a cutting bur. after the vibration, the st ... | 1999 | 10614117 |
| comparison of self-reinforced poly-l-lactide and steel wire in fixation of sternotomy in rabbits. | to investigate the healing of sternotomies fixed with biodegradable self-reinforced poly-l-lactide (sr-plla) wire and comparing it with steel wire fixation. | 1999 | 10661832 |
| [the effect of a photo-developing solution on respiratory and cardiac activities in rats when orally administered]. | the development of cinema art brought about the increase in the number of laboratories which prepare photosensitive materials. in case of laboratories not complying with rules regarding the preparation and handling of the solutions for processing photos, these solutions can penetrate in the organism trough the skin and be accidentally digested. the goal of the experiment is to study the effects of developing solution for white/black azomureş photographic paper on respiratory and cardiac activity ... | 1999 | 10756956 |
| ablation depths and morphological changes in human enamel and dentin after er:yag laser irradiation with or without water mist. | this investigation was performed quantitatively to determine the ranges of ablation and to evaluate the morphological changes in human enamel and dentin irradiated by er:yag laser with or without water mist. | 1999 | 11199828 |
| effects of er,cr:ysgg laser irradiation in human enamel and dentin: ablation and morphological studies. | this investigation was performed to determine quantitatively the ranges of ablation and to evaluate the morphological changes in human enamel and dentin irradiated by er,cr:ysgg laser with or without water spray. | 1999 | 11199838 |
| officials scramble to contact inmates put at risk by messy dentist. | officials in albany, new york, are contacting 260 former inmates of the albany county jail who had tooth extractions performed by a local dentist. dr. david l. weinstein used dirty drill bits, possibly exposing patients to hiv. weinstein treated nearly 2,000 patients between 1995 and 1998. the state has filed professional misconduct charges against him. | 1999 | 11367190 |
| mr imaging of changes of the growth plate after partial physeal removal and fat graft interposition in rabbits. | the most important complication of skeletal injuries involving the growth plate is growth disturbance. the purpose of this study was to evaluate mr features of growth plate modification after fat graft interposition in growth plate injury and to correlate these findings with pathological findings. | 2000 | 11204797 |
| changes in volatile terpene and diterpene resin acid composition of resistant and susceptible white spruce leaders exposed to simulated white pine weevil damage. | induced (traumatic) resin in white spruce (picea glauca (moench) voss) leaders resistant or susceptible to the white pine weevil (pissodes strobi peck) was analyzed for volatile terpenes and diterpene resin acids after simulated white pine weevil damage. leaders from 331 trees were wounded just below the apical bud with a 1-mm diameter drill, coinciding with the natural time of weevil oviposition in the spring. leaders were removed in the fall, and the bark and xylem from the upper and lower reg ... | 2000 | 11269960 |
| crisis resource management among strangers: principles of organizing a multidisciplinary group for crisis resource management. | patient safety depends on the skills, vigilance, and judgment of trained individuals working as members of a clinical team that includes anesthesiologists, surgeons, nurses, and technicians. now, as never before, safe outcome depends both on better knowledge and better management. this requires organization of caregivers, who may be strangers from diverse disciplines, into teams. one can drill an individual to work safely alone. one can rehearse a series of scenarios with small groups (who regul ... | 2000 | 11173002 |
| a histopathological and immunohistochemical study of dental pulp and pulpal nerve fibers in rats after the cavity preparation using er:yag laser. | the purpose of this study was to investigate histopathological changes in the dental pulp after er:yag laser irradiation compared with those after high-speed drill preparation. for evaluation, repair of nerve fibers was observed using an immunohistochemical technique. there was no significant difference between the remaining dentin thickness in either cases. (mann-whitney u test). in the er:yag laser group a marked fibroblast proliferation and the formation of reparative dentin were observed rel ... | 2000 | 11194381 |
| dental products devices; reclassification of endosseous dental implant accessories. food and drug administration, hhs. final rule. | the food and drug administration (fda) is reclassifying the manually powered drill bits, screwdrivers, countertorque devices, placement and removal tools, laboratory pieces used for fabrication of dental prosthetics, trial abutments, and other manually powered endosseous dental implant accessories from class iii to class i. these devices are intended to aid in the placement or removal of endosseous dental implants and abutments, prepare the site for placement of endosseous dental implants or ab ... | 2000 | 11503656 |
| hemilaminectomy for the removal of the spinal lesions. | we evaluated 20 patients with spinal lesions with respect to the value of unilateral hemilaminectomy at the department of neurosurgery, erciyes university, medical faculty, kayseri, turkey. the operative technique of the limited approach for spinal lesions is described. | 2000 | 10762181 |
| spatial orientation of the microscopic elements of cortical repair bone. | this study was designed to assess whether the original orientation of the elements of cortical diaphyseal bone is reestablished during 18 months of repair. full thickness 3-mm drill holes were created surgically through the tibial and femoral cortices of adult rabbits and studied by light and polarizing microscopic analysis at 1, 4, 8, and 16 weeks and 6, 12, and 18 months after the defects were created. from 16 weeks to 12 months the defects were repaired fully with lamellar bone, while the lon ... | 2000 | 10818986 |
| anatomic considerations of costotransverse screw placement in the thoracic spine. | numerous techniques have been reported to restore spinal stability and to correct spinal deformities, including rods with wires/hooks, and rods or plates with pedicular screws. it was thought that posterior fixation of the thoracic spine through the costotransverse joint may be another alternative. | 2000 | 10825520 |
| review of research studies of ergonomic aspects of selected personal protective equipment. | this article is a review of research studies conducted in the central institute for labour protection (ciop) on ergonomic aspects of personal protective equipment (ppe) design and use. research was related to, among other things, a comparison of body strain and work time limitation for users wearing gas-tight and drill suits. some other studies were connected with the biophysical properties of clothing materials for medical use. on the basis of the measurement results, a proposal of clothing con ... | 2000 | 10828161 |
| transient expression of activin betaa mrna on osteoprogenitor cells in rat bone regeneration after drill-hole injury. | we investigated the expression of activin betaa on osteoprogenitor cells in the regenerating bone and bone marrow of the rat femur after drill-hole injury, by immunocytochemistry and in situ hybridization. the periosteum and endosteum adjacent to the wound region showed marked thickening at day 3 and abundant osteoprogenitor cells, which were immunoreactive for proliferating cell nuclear antigen and showed positive reactions for alkaline phosphatase activity, and existed in the inner layer of th ... | 2000 | 10865213 |
| sternal bone biopsy in standing horses. | to develop a technique for sternal bone biopsy in standing horses. | 2000 | 10917279 |
| osteochondral lesion repair of the knee in the rabbit after low-power diode ga-al-as laser biostimulation: an experimental study. | the purpose of this study was to evaluate whether low-power laser biostimulation of the osteo-chondral lesions of the knee could by itself reduce repair healing time. surgery was performed on eighteen rabbits; a bilateral osteo-chondral lesion of 2.5mm in diameter and 2mm depth was created in the femoral medial condyle with a drill. the left knee of each animal was treated intraoperatively using the diode ga-al-as laser (780nm) with the following parameters: 300 joules/cm2, 1 watts, 300 hertz, 1 ... | 2000 | 10928702 |
| contribution of monocytes/macrophages to compensatory neovascularization: the drilling of metalloelastase-positive tunnels in ischemic myocardium. | in a transgenic model of ischemic cardiomyopathy in which monocytes are attracted to the myocardium by the targeted overexpression of monocyte chemoattractant protein-1 (mcp-1), we have observed the presence of endothelial no synthase and platelet endothelial cell adhesion molecule-1-negative tunnels, occasionally containing blood-derived cells, that probe the cardiac tissue. immunohistochemical data show that monocytes/macrophages (mcs/mphs) drill tunnels using the broad-spectrum mouse macropha ... | 2000 | 10969035 |
| a microradiographic investigation of cancellous bone healing after irradiation and hyperbaric oxygenation: a rabbit study. | to analyze the effect of irradiation on cancellous bone healing at different times after irradiation and to study if hyperbaric oxygen therapy (hbo) would affect the bone healing capacity, when delivered directly after irradiation. | 2000 | 10974476 |
| the effect of screw insertion site and unused drill holes on stability and mode of failure after fixation of basicervical femoral neck fracture. | the intent of this biomechanical study is to characterize the effect of unused drill holes and cannulated screw insertion site on the fixation stability and mode of failure after fixation of basicervical femoral neck fractures. fourteen matched pairs of embalmed human cadaver femora were sorted into four groups according to the level of screw insertion along the lateral cortex. screws inserted at higher positions along the lateral cortex afforded higher rigidity, thus decreasing the amount of mo ... | 2000 | 10999359 |
| effects of periosteum wrapped around tendon in a bone tunnel: a biomechanical and histological study in rabbits. | the present study demonstrated the effects of periosteal autograft on tendon-to-bone healing in the rabbits. in 20 japanese white rabbits, proximal end of the long digital extensor tendon that was wrapped around by a periosteum was transplanted into a drill hole in the proximal tibial metaphysis. a fresh periosteum was used in the left tibia and a frozen periosteum was used in the right tibia. six specimens were harvested at each 2, 4, and 6 weeks postoperatively. radiological features showed pr ... | 2000 | 10999374 |
| development of bone canaliculi during bone repair. | we recently found that silver impregnation staining with protargol (silver protein), that is, a modified bodian method, is useful for histologically identifying the details of bone canaliculi structure, using thin sections of decalcified bone tissues. with this staining method, we conducted the present study to assess the development of bone canaliculi during the process of intramembranous ossification using a fracture-like stimulation model of the rat femur. after making a drill-hole in the cor ... | 2000 | 11062352 |
| surgical implantation of ultrafiltration probes in ovine bone and muscle. | it may be desirable to collect compounds directly from sites of interest if blood concentrations do not reflect tissue levels. ultrafiltration and microdialysis probes may be used to do this, but the hollow fibers of these probes are quite fragile. for this reason, we developed a pull-through technique that allows their implantation into the ovine quadriceps muscle and femur. the sheep is placed under anesthesia in lateral recumbency. an incision is made midway between the patella and greater tr ... | 2000 | 11071565 |
| simian homologues of human gamma-2 and betaherpesviruses in mandrill and drill monkeys. | recent serological and molecular surveys of different primate species allowed the characterization of several kaposi's sarcoma-associated herpesvirus (kshv) homologues in macaques, african green monkeys, chimpanzees, and gorillas. identification of these new primate rhadinoviruses revealed the existence of two distinct genogroups, called rv1 and rv2. using a degenerate consensus primer pcr method for the herpesvirus dna polymerase gene, the presence of kshv homologues has been investigated in tw ... | 2000 | 11090203 |
| simian foamy virus infections in a baboon breeding colony. | the prevalence, transmission, and variation of simian foamy viruses (sfvs) in baboons was investigated. over 95% of adult baboons in the breeding colony as well as recently imported adult animals had high titers of anti-sfv serum igg. maternal antibody was detectable in infants' serum up to 6 months of age. approximately 30% of infants in breeding harems experienced sfv infections by 1 year of age. shedding of sfv in oral secretions was common, with 13% of samples from normal adult animals and 3 ... | 2000 | 11112493 |
| intensity of bacteraemia associated with conservative dental procedures in children. | to explore the individual dento-gingival manipulative procedures that together lead to the placement of a restoration and to estimate the associated intensity of bacteraemia. | 2000 | 10689771 |
| lower cretaceous dinoflagellate cyst and acritarch stratigraphy of the cismon apticore (southern alps, italy). | a pelagic sedimentary succession, virtually complete from the upper hauterivian to the upper aptian and unconformably overlain by the middle-upper albian p.p., was continuously cored in the belluno basin (southern alps, ne italy) as part of the apticore program. apticore at cismon valley penetrated 131.8m of limestones, marls and black shales, with 100% recovery of good quality cored material.one hundred and forty-six samples recovered from the marl and shale beds of the cismon core were process ... | 2000 | 10704645 |
| a bioabsorbable plug in bone-tendon-bone reconstruction of the anterior cruciate ligament: introduction of a novel fixation technique. | our aim was to compare the fixation strength of a novel plugging technique with that of the conventional interference technique in bone-patellar tendon-bone reconstruction of the anterior cruciate ligament. | 2001 | 11172243 |
| use of a non-contact, infrared laser for zona drilling of mouse embryos: assessment of immediate effects on blastomere viability. | to compare the effects of using a non-contact infrared laser with acid tyrode's for zona drilling, mouse embryos were used to examine both immediate effects on blastomere viability, using fluorescent markers, and development to the blastocyst stage in vitro. preliminary experiments with isolated blastomeres established that the safe working distance for the lowest setting of the laser (pulse duration 5 ms) was 8 micro m. at the 2-cell stage, when it was possible to drill through the zona while m ... | 2001 | 12537793 |
| [in vivo studies of screw-bone contact of drill-free screws and conventional self-tapping screws]. | screw-bone contact (sbc) and bone remodeling of titanium drill-free screws or self-tapping screws should be compared. each 10 titanium self-tapping miniscrews or microscrews, and each 10 titanium drill-free miniscrews or microscrews were inserted into the anterior wall of the frontal sinus of 5 göttingen minipigs. intraperitoneal injections of fluochromes (xylenol, calcein, alizarincomplexon and tetrazyklin) were performed between the 2nd and 9th postoperative week. the pigs were sacrificed afte ... | 2001 | 11272381 |
| [madreporic hydroxyapatite granulates for filling bone defects]. | two macrocrystalline madreporic granular hydroxyapatite implants of different size range (single crystal size within both implants 1-3 microns) were implanted for 7, 28, 84 and 168 days into the trabecular bone of the distal femur epiphysis of rabbits. both materials were investigated histologically. for testing of granular materials a new animal model has been developed. the drill hole was closed by reimplantation of an autologeous chondrocortical tissue slice to prevent loss of particles into ... | 2001 | 11284353 |
| analysis of the osseous/metal interface of drill free screws and self-tapping screws. | aim: a comparison of metal/osseous interface and bone remodelling after insertion of different types of titanium bone screws in vivo. material: samples of five of each of the following bone screw types were inserted into the anterior wall of the frontal sinus of five göttingen minipigs: self-tapping micro- (1.5 mm) and miniscrews (2.0 mm) or drill free micro- (1.5 mm) and miniscrews (2.0 mm) (martin medizintechnik, tuttlingen, germany). screw length was 7 mm. methods: sequential intraperitoneal ... | 2001 | 11308282 |
| the fixation properties of carbon fiber-reinforced liquid crystalline polymer implant in bone: an experimental study in rabbits. | a novel composite material with ultra-high strength and a low elastic modulus called carbon fiber-reinforced liquid crystalline polymer (lcp/cf) has been developed. we studied the fixation properties of an intramedullary lcp/cf rod in rabbit bone. the medullary canals of both femora were reamed with a drill 3.2 mm in diameter starting from the trochanteric fossa in eleven new zealand white rabbits weighing on average 4.8 kg. a smooth lcp/cf rod 3.2 mm in diameter and 50 mm in length was introduc ... | 2001 | 11309800 |
| comparison of er:yag and 9.6-microm te co(2) lasers for ablation of skull tissue. | craniotomy by using a drill and saw frequently results in fragmentation of the skull plate. lasers have the potential to remove the skull plate intact, simplifying the reconstructive surgery. | 2001 | 11344514 |
| low-power diode laser stimulation of surgical osteochondral defects: results after 24 weeks. | the purpose of this study was to evaluate osteochondral lesions of the knee, treated intraoperatively with low-power laser stimulation, and assess results at 24 weeks. surgery was performed under general anesthesia on six rabbits; a bilateral osteochondral lesion was created in the femoral medial condyles with a drill. all of the left lesions underwent immediate stimulation using the diode ga-al-as laser (780nm), whereas the right knees were left untreated as control group. after 24 weeks, the e ... | 2001 | 11358039 |
| changes in permeability of strial vessels following vibration given to auditory ossicle by drill. | we produced drill-induced damage of the auditory ossicles of guinea pigs to study changes over time in the permeability of the blood vessels of the stria vascularis to horseradish peroxidase (hrp). in group a, the stimulus was applied for 10 seconds after intravenous injection of hrp. in group b, it was applied for 30 seconds, and in group c, for 60 seconds. the cochlea was fixed with 2% glutaraldehyde perfused through the round window, and the guinea pigs were then decapitated. the stria vascul ... | 2001 | 11219518 |
| surgical arthrodesis of distal tarsal joints in 17 horses clinically affected with osteoarthritis. | to evaluate the outcome of 17 horses that underwent surgical arthrodesis of the tarsometatarsal and distal intertarsal joints for treatment of lameness due to osteoarthritis. | 2001 | 11221565 |