Publications
| Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
|---|
| an analysis of hospital preparedness capacity for public health emergency in four regions of china: beijing, shandong, guangxi, and hainan. | hospital preparedness is critical for the early detection and management of public health emergency (phe). understanding the current status of phe preparedness is the first step in planning to enhance hospitals' capacities for emergency response. the objective of this study is to understand the current status of hospital phe preparedness in china. | 2008 | 18803860 |
| radiofrequency ablation of experimental bone metastases in nude rats. | animal models are indispensable to investigate bone metastasis and to test different preclinical therapy options. radiofrequency ablation is an upcoming technique for palliating pain from bone metastases. the aim of this study was to generate osteolytic lesions and to enable a technique to achieve access to the bone to successfully carry out radiofrequency ablation. | 2008 | 18507032 |
| the effect of co(2) laser on the microhardness of human dental hard tissues compared with that of the high-speed drill. | the purpose of this study was to examine the effect of 9.6-microm co(2) laser energy on the microhardness of human dental hard tissues compared with that of high-speed drill cavity preparation, and to determine the applicability of this laser in clinical treatment. | 2008 | 18248164 |
| bone tissue reaction of nano-hydroxyapatite/collagen composite at the early stage of implantation. | the purpose of this study was to develop a new biodegradable bone substitute materials consisting of synthesized nano-size hydroxyapatite (nano-hap) and type i biodegradable honeycomb collagen sponge (hcs) composites. bone defects in rabbit mandibles were prepared by a drill, and the composites were implanted into the bone defects. the hcs only and the hcs/calcined hydroxyapatite (hap) composite were used as comparative materials. the bone tissues reaction at the early stage within 3 weeks after ... | 2008 | 18198404 |
| in vitro evaluation of a custom cutting jig and custom plate for canine tibial plateau leveling. | to design and manufacture custom titanium bone plates and a custom cutting and drill guide by use of free-form fabrication methods and to compare variables and mechanical properties of 2 canine tibial plateau leveling methods with each other and with historical control values. | 2008 | 18593251 |
| drilling sounds are used by surgeons and intermediate residents, but not novice orthopedic trainees, to guide drilling motions. | the purpose of our study was to investigate the impact of distracting noise on the performance on a simulated orthopedic bone drilling skill when that noise blocks routine auditory feedback associated with the sounds of the drill. | 2008 | 19057732 |
| pattern of time-dependent reduction of histologically determined infarct volume after focal ischaemia in mice. | the mouse model of transcranial permanent occlusion of the middle cerebral artery (tpmcao) is widely used in stroke research. here we quantified infarct size using a conventional histological method at several post-ischaemic times, going beyond the commonly analysed period of up to 2 days, following artery occlusion. two different mouse strains, which are widely used for pharmacological studies of neuroprotection and for genetic engineering, were used. a drill whole was made into the skull of an ... | 2008 | 18222610 |
| effects of different depths of gap on healing of surgically created coronal defects around implants in dogs: a pilot study. | this study investigated the bone growth pattern in surgically created coronal defects with various depths around implants in dogs. | 2008 | 18251651 |
| fatigue resistance of bovine teeth restored with resin-bonded fiber posts: effect of post surface conditioning. | this study evaluated the effect of post surface conditioning on the fatigue resistance of bovine teeth restored with resin-bonded fiber-reinforced composite (frc). root canals of 20 single-rooted bovine teeth (16 mm long) were prepared to 12 mm using a preparation drill of a double-tapered fiber post system. using acrylic resin, each specimen was embedded (up to 3.0 mm from the cervical part of the specimen) in a pvc cylinder and allocated into one of two groups (n = 10) based on the post surfac ... | 2008 | 18254561 |
| a long-term study of apicoectomy and endodontic treatment of apically infected cheek teeth in 12 horses. | the aim of this study was to evaluate the long-term results of apicoectomy and retrograde endodontic treatment in 12 horses with apical cheek teeth infections. the affected apices were removed using a diamond bur mounted on a dental drill, and after pulp removal the root canals were filed with hedstrøm files and then alternately flushed with sodium hypochlorite, hydrogen peroxide and alcohol. the pulp canals were dried and filled with endodontic cement and gutta-percha points. an undercut was ma ... | 2008 | 18993094 |
| fatal venous air embolism in a cat undergoing dental extractions. | a five-year-old domestic shorthair cat underwent general anaesthesia and tooth extractions. immediately after use of a high-speed, air-driven, water-cooled dental drill, the cat suffered cardiac arrest and attempted resuscitation was unsuccessful. post-mortem radiographs showed air in the vena cava, right atrium, right auricle and right ventricle, hepatic and renal veins. these findings were confirmed at post-mortem examination. the cause of death was massive air embolism. there are reports of f ... | 2008 | 19006491 |
| standards in collaborative international disaster drills: a case study of two international search and rescue drills. | during the last few decades, various global disasters have rendered nations helpless (such as thailand's tsunami and earthquakes in turkey, pakistan, iran, and india). a lack of knowledge and resources make it difficult to address such disasters. preparedness for a national disaster is expensive, and in most cases, unachievable even for modern countries. international collaboration might be useful for coping with large-scale disasters. preparedness for international collaboration includes drills ... | 2008 | 18491663 |
| human fetal bone cells associated with ceramic reinforced pla scaffolds for tissue engineering. | fetal bone cells were shown to have an interesting potential for therapeutic use in bone tissue engineering due to their rapid growth rate and their ability to differentiate into mature osteoblasts in vitro. we describe hereafter their capability to promote bone repair in vivo when combined with porous scaffolds based on poly(l-lactic acid) (pla) obtained by supercritical gas foaming and reinforced with 5 wt.% beta-tricalcium phosphate (tcp). bone regeneration was assessed by radiography and his ... | 2008 | 18178142 |
| thermal osteonecrosis and bone drilling parameters revisited. | during the drilling of the bone, the temperature could increase above 47 degrees c and cause irreversible osteonecrosis. the result is weakened contact of implants with bone and possible loss of rigid fixation. the aim of this study was to find an optimal condition where the increase in bone temperature during bone drilling process would be minimal. | 2008 | 17762937 |
| note on drill (mandrillus leucophaeus) ecology and conservation status in korup national park, southwest cameroon. | we report preliminary findings on drill population ecology, feeding ecology, primate associations and conservation status in korup national park, cameroon, based on analysis of data collected during 1,346 km (620 field hours) of trail patrols from february to june 2006. we encountered drills on 25 occasions and collected 304 fecal samples. group size was estimated on four occasions (> or =25, > or =40, > or =67, > or =77), and multiple males were heard emitting the characteristic two-phase grunt ... | 2008 | 17922527 |
| collection of fungi samples from nails: comparative study of curettage and drilling techniques. | onychomycosis is a common problem. obtaining a positive laboratory test before treatment is important in clinical practice because the treatment of onychomycosis requires expensive oral antifungal therapy with potentially serious side-effects. | 2008 | 18211411 |
| resin bonding to root canal dentin: effect of the application of an experimental hydrophobic resin coating after an all-in-one adhesive. | based on the hypothesis the application of a low-viscosity hydrophobic resin coating improves the bond of all-in-one adhesive, the purpose of the study was to evaluate the bond strength of four adhesive systems to bovine root dentin using the push-out test method. | 2008 | 18473025 |
| vertebral canal location of a broken drill bit. | a 2 mm drill broke during plate fixation of an ilial fracture. postoperative radiographs showed the tip of the drill bit to be within the l7 vertebral canal. it was retrieved 10 days later via dorsal laminectomy, immediately restoring weight bearing. | 2008 | 18288350 |
| microdamage in cortical bone due to the overtightening of orthodontic microscrews. | the possibility of skeletal anchorage achieved with mini-implants has greatly broadened the spectrum of treatment modalities in orthodontics. aim of this study was to investigate the microstructural alterations in cortical bone due to overtightening of orthodontic microscrews during the insertion procedure. | 2008 | 18385958 |
| orthogonal cutting of cancellous bone with application to the harvesting of bone autograft. | autogenous bone graft harvesting results in cell death within the graft and trauma at the donor site. the latter can be mitigated by using minimally invasive tools and techniques, while cell morbidity may be reduced by improving cutter design and cutting parameters. we have performed orthogonal cutting experiments on bovine cancellous bone samples, to gain a basic understanding of the cutting mechanism and to determine design guidelines for tooling. measurements were performed at cutting speeds ... | 2008 | 17825598 |
| use of a pandemic preparedness drill to increase rates of influenza vaccination among healthcare workers. | to determine the effect of a pandemic influenza preparedness drill on the rate of influenza vaccination among healthcare workers (hcws). | 2008 | 18179365 |
| preoperative sterilization and disinfection of drill guide templates. | the aim of the in vitro study was to evaluate the decontamination potential of common antiseptic solutions for heat-sensitive implantological drill guide templates. one hundred implantologists were evaluated on the basis of a questionnaire for their measures of disinfection. on the basis of these results, 80% alcohol, octenidine 0.1%, and chlorhexidine 0.12% were tested in an in vitro model for their decontamination efficacy for heat-sensitive plastic material infected with pseudomonas aeruginos ... | 2008 | 17917747 |
| [image-guided minimal-invasive cochlear implantation--experiments on cadavers]. | the accuracy of navigation systems can be improved significantly by using high-resolution flat panel-based volume computed tomography (fpvct) so that new surgical therapeutic concepts become feasible. a navigation-guided minimally-invasive cochleostomy places highest requirements on the accuracy of intraoperative navigation. | 2008 | 17713878 |
| drilling k-wires, what about the osteocytes? an experimental study in rabbits. | the function of osteocytes regarding osteonecrosis has been underestimated for a long time. recently it has been suggested that apoptosis of osteocytes results in strong osteoclastic bone resorption. death of osteocytes due to drilling may therefore increase the risk of k-wire loosening. the purposes of our in vivo study were to assess the minimal drill time needed to notice disappearance of osteocytes and to measure the distance of the empty osteocyte lacunae surrounding the drill tract in rela ... | 2008 | 17598116 |
| [stereotaxic ventriculocisternostomy in the treatment of triventricular obstructive hydrocephalus. apropos of 23 cases]. | during the period january 1975-october 1987, we performed stereotactic ventriculocisternostomy (v.c.s.) on 23 patients (13 m., 10 f.; age: 11-73 years, m: 33). sometimes used as an isolated therapeutic procedure, v.c.s. may also follow stereotactic biopsies using talairach's methodology. serial stereotactic biopsies were performed in 15 out of 23 patients showing 11 tumoral lesion, two arachnoïdal cysts and two cryptic vascular malformations. eight patients presented with an isolated aqueductal ... | 2008 | 3070419 |
| [the tube-stat: a useful aid in difficult intubation]. | a patient (asa class i) scheduled for an elective gynecological operation, could not be intubated by conventional means, as no part of the glottis could be seen on direct laryngoscopy. endotracheal intubation was successful on the first attempt using a lighted intubation stylet (tube-stat, concept corporation, clearwater, florida, usa). transillumination of the neck tissues acted as a guide for correct placement of the endotracheal tube. postoperatively, the patient complained of hoarseness and ... | 2008 | 2719227 |
| dame: planetary-prototype drilling automation. | we describe results from the drilling automation for mars exploration (dame) project, including those of the summer 2006 tests from an arctic analog site. the drill hardware is a hardened, evolved version of the advanced deep drill by honeybee robotics. dame has developed diagnostic and executive software for hands-off surface operations of the evolved version of this drill. the dame drill automation tested from 2004 through 2006 included adaptively controlled drilling operations and the downhol ... | 2008 | 18597659 |
| the national football league combine: performance differences between drafted and nondrafted players entering the 2004 and 2005 drafts. | the purpose of this study was to examine performance differences between drafted and nondrafted athletes (n = 321) during the 2004 and 2005 national football league (nfl) combines. we categorized players into one of 3 groups: skill, big skill, and linemen. skill players (sp) consisted of wide receivers, cornerbacks, free safeties, strong safeties, and running backs. big skill players (bsp) included fullbacks, linebackers, tight ends, and defensive ends. linemen (lm) consisted of centers, offensi ... | 2008 | 18296949 |
| biomechanical evaluation of the influence of cervical screws tapping and design. | to assess if the screw design (self-drilling/self-tapping) and the pilot hole tapping could affect the insertion torque and screw pullout strength of the screw used in anterior fixation of the cervical spine. | 2009 | 27004189 |
| predictable drill-free screw positioning with a graduated 3-dimensional radiographic-surgical guide: a preliminary report. | mini-implants are placed in restricted sites, requiring an accurate surgical technique. however, no systematic study has quantified technique accuracy to reliably predict the surgical risks. therefore, a graduated 3-dimensional radiographic-surgical guide (g-rsg) was proposed, and its inaccuracy and risk index (ri) were estimated. | 2009 | 19892291 |
| [an experiment to calculate the theoretical temperature at the drill-cortical bone interface]. | to date, analysis of temperature in the drill area of cortical bone have been limited to measurements with thermocouple systems at a certain distance from the drill hole. many authors equate this temperature measurement with the drill--cortical bone interface temperature. in order show that there is a temperature difference, a drill hole was simulated with the aid of the "finite element method". the interface temperature was calculated by the energy distribution. it was shown, that for "dry" and ... | 2009 | 2720047 |
| [frequency of blood contamination of the dentist during conservative and prosthetic treatment]. | the endangerment caused by the blood contents of spray formed in the course of oonserving and prosthetical work of dentists performed by dental drill was examined. it was found that the protective mask in case of grinding and drilling the front teeth becomes always while in case of treating the molars less frequently soiled. in the course of prosthetical work it occurs frequently that bloody spray reaches the hair of the physician. frequency of soiling is independent of the type of the machine u ... | 2009 | 2643536 |
| reordering contigs of draft genomes using the mauve aligner. | mauve contig mover provides a new method for proposing the relative order of contigs that make up a draft genome based on comparison to a complete or draft reference genome. a novel application of the mauve aligner and viewer provides an automated reordering algorithm coupled with a powerful drill-down display allowing detailed exploration of results. | 2009 | 19515959 |
| [hematologic repercussions of physical exercise in the mountains]. | marked decrease of serum ferritin was found in 28 cadets of the general military academy after a 15-day high-mountain drill period during which they practised ski 5 hours a day. no significant changes were found in serum iron, total iron binding capacity, vitamin b 12 and folates. slight differences found in haemoglobin, white blood cell count and serum albumin were attributed to haemodilution. these findings were thought to be due to decreased iron stores leading neither to anaemia nor to dimin ... | 2009 | 2772779 |
| effect of subchondral drilling on repair of partial-thickness cartilage defects of third carpal bones in horses. | arthrotomies of middle carpal joints were done on 13 horses, and a 1-cm partial thickness, round defect was made on the radial facet of both third carpal bones. in one joint, 1-mm diameter 1-cm deep holes were drilled within the defect, and one joint was used as a control. horses were assigned to 2 groups--group 1 (n = 6 horses), 5 drill holes; group 2 (n = 7 horses), 11 drill holes. at 1 and 3 weeks after surgery, differences between joints in synovial fluid total protein values, wbc counts, or ... | 2009 | 2719397 |
| uncertainty and visual strategies in table tennis. | ball games are characterized by perceptual uncertainty and time-pressure. of interest is the visual-search pattern carried out when these characteristics change. this is the case in table-tennis situations when comparing a drill situation, when one kind of stroke is constantly repeated, and a match situation, when the stroke is more often unpredictable. we analysed, during play, the visual-search pattern of five expert table tennis players to examine the effect of uncertainty on visual behavior. ... | 2009 | 2717357 |
| the role of iron in metal-metal interactions in hard tissues of roe deer (capreolus capreolus l.). | the toxicity of heavy metals in humans and animals has been attributed to their potential for accumulation in solid tissues and interference with other vitally important elements present in the body. we have devised this study to determine the content of some metals in bone and to determine with the statistica neural networks program whether the content of one metal has any effect on the content of other metals. | 2009 | 20349606 |
| evaluation of a pandemic preparedness training intervention of emergency medical services personnel. | emergency medical services (ems) personnel play an integral role during the national response to a pandemic event. to help ensure their health and safety, especially during the early stages of an outbreak, knowledge and adherence with personal protective equipment (ppe) and infection control strategies will be essential. | 2009 | 20301068 |
| the neuroendocrine effects of the taser x26: a brief report. | law enforcement officers use conducted electrical weapons (cew) such as the taser x26 to control violently resistive subjects. there are no studies in the medical literature examining the effects of these weapons on the human stress response. this is the first study to compare the human stress response to conducted electrical weapons, oleoresin capsicum (o.c.), a cold-water tank immersion, and a defensive tactics drill. | 2009 | 19019594 |
| drilling and microfracture lead to different bone structure and necrosis during bone-marrow stimulation for cartilage repair. | bone marrow stimulation is performed using several surgical techniques that have not been systematically compared or optimized for a desired cartilage repair outcome. in this study, we investigated acute osteochondral characteristics following microfracture and comparing to drilling in a mature rabbit model of cartilage repair. microfracture holes were made to a depth of 2 mm and drill holes to either 2 mm or 6 mm under cooled irrigation. animals were sacrificed 1 day postoperatively and subchon ... | 2009 | 19402150 |
| laboratory studies on biomachining of copper using staphylococcus sp. | the possibility of using bacteria to drill metallic surfaces has been demonstrated using staphylococcus sp., a facultative anaerobic bacterium, isolated from corroded copper piping. the experiment involved exposure of copper coupons (25 mm x 15 mm x 3 mm) to a culture of staphylococcus sp. for a maximum period of 7 days. coupons exposed to sterile bacterial growth medium were used as controls. exposed coupons were removed intermittently and observed microscopically for the extent of drilling. th ... | 2009 | 19440892 |
| sacroiliac luxation in the cat: defining a safe corridor in the dorsoventral plane for screw insertion in lag fashion. | to define a safe corridor in the dorsoventral plane within the feline sacral body for placement of screws inserted in lag fashion for repair of sacroiliac luxation. | 2009 | 19573097 |
| application of haptic device to implant dentistry--accuracy verification of drilling into a pig bone. | to enable accurate implant placement and precise drilling following preoperative simulation, we developed the bonenavi system. to realize more precise drilling when the holes are upsized, two methods of surgical guiding were attempted in the present study. one involved using multiple surgical guides with titanium tubes of different diameters, and the other involved using a single surgical guide but employing titanium drill guide tubes with different diameters. drilling accuracy of the two newly ... | 2009 | 19280971 |
| neuroprotective effects of infliximab in experimental spinal cord injury. | the aim of the study is to assess the effects of infliximab, a tnf-alpha receptor blocker, in a spinal cord clip compression injury model. | 2009 | 18440605 |
| rupture of the quadriceps tendon. a case report in a young dog. | a five-month-old, male, 16 kg, mixed breed dog was presented for an acute non-weight bearing lameness of the right hind limb. a subtotal avulsion of the quadriceps tendon at its patellar insertion was diagnosed through radiography and ultrasonography. two nylon sutures secured with a stainless steel crimp were placed in a locking loop pattern in the quadriceps tendon and through a transverse 2.7 mm drill-hole in the patella. no external coaptation was used postoperatively. a full functional reco ... | 2009 | 19151876 |
| pull-out strength of multifunctional bioabsorbable ciprofloxacin-releasing polylactide-polyglycolide 80/20 tacks: an experimental study allograft cranial bone. | in this study, the pull-out forces of recently developed multifunctional bioabsorbable self-reinforced ciprofloxacin-releasing polylactide/polyglycolide (sr-plga+ab) 80/20 tacks were compared with plain sr-plga 80/20 tacks in human cadaver parietal bones. pieces of parietal bone (approximately 6 x 20 cm) were harvested from 5 human cadavers (all were male, 29-77 years old). fifty plain sr-plga tacks (diameter, 2.0 mm; length, 6.0 mm) and 50 ciprofloxacin-releasing sr-plga tacks of similar dimens ... | 2009 | 19164990 |
| a comparison of human brain dissection by drill versus saw on nucleic acid quality. | this study examined the effect of two dissection techniques on the quality of human brain specimens. frozen cerebellar samples were obtained from postmortem brains of 10 subjects free from neurological and psychiatric disease. these tissues were tested for rna and dna concentration and quality after being dissected with either an electric dental drill or a small handsaw. rna and dna were extracted separately from each sample, and the concentrations and quality of each were measured. we found tha ... | 2009 | 19167430 |
| the effect of parecoxib and indometacin on tendon-to-bone healing in a bone tunnel: an experimental study in rats. | conventional non-steroidal anti-inflammatory drugs (nsaids) and newer specific cyclo-oxygenase-2 (cox-2) inhibitors are commonly used in musculoskeletal trauma and orthopaedic surgery to reduce the inflammatory response and pain. these drugs have been reported to impair bone metabolism. in reconstruction of the anterior cruciate ligament the hamstring tendons are mainly used as the graft of choice, and a prerequisite for good results is healing of the tendons in the bone tunnel. many of these pa ... | 2009 | 19190065 |
| beyond gorilla and pongo: alternative models for evaluating variation and sexual dimorphism in fossil hominoid samples. | sexual size dimorphism in the postcanine dentition of the late miocene hominoid lufengpithecus lufengensis exceeds that in pongo pygmaeus, demonstrating that the maximum degree of molar size dimorphism in apes is not represented among the extant hominoidea. it has not been established, however, that the molars of pongo are more dimorphic than those of any other living primate. in this study, we used resampling-based methods to compare molar dimorphism in gorilla, pongo, and lufengpithecus to tha ... | 2009 | 19358294 |
| intraosseous ultrasound in the placement of pedicle screws in the lumbar spine. | experimental and intraoperative evaluation of the efficiency of a novel technique. | 2009 | 19214101 |
| repair process after fibrocartilaginous enthesis drilling: histological study in a rabbit model. | disorders of the enthesis are often a consequence of sports injuries. however, there is uncertainty regarding the process of mechanical stress-related injuries at the enthesis and the subsequent repair process of the injured tissues. to elucidate the repair process of the fibrocartilaginous enthesis, we studied the repair of injured fibrocartilaginous enthesis and the morphological characteristics of the repaired tissue. | 2009 | 19214692 |
| hammering versus drilling of sharp and obtuse trocar-point k-wires. | kirschner wire characteristics affect the heating of bone during insertion and the subsequent strength of fixation. we inserted 90 sharp and 90 obtuse trocar-tip k-wires into 90 fresh frozen human cadaver metacarpals using either a drill or a pneumatic hammer. the temperature elevation, insertion time and extraction force were measured for four k-wire insertion combinations: drilling sharp; drilling obtuse; hammering sharp; hammering obtuse. hammering resulted in significantly lower temperature ... | 2009 | 19282409 |
| use of demineralized bone matrix protein in osteoporotic rats: a histological evaluation - biomed 2009. | osteoporosis is a disease characterized by structural deterioration of bone tissue, leading to fragile bone with an increased risk for fractures. bone morphogenetic proteins (bmps) are supplemental bone graft materials that have osteoconductive properties of serving as a scaffold for bone to grow on and osteoinductive capability of stimulating the patient's own stem cells and growth factors to grow new bone. osteoblast cells in osteoporotic bone have the ability to produce bmps and other factors ... | 2009 | 19369736 |
| design of a mechanical clutch-based needle-insertion device. | insertion of trocars, needles, and catheters into unintended tissues or tissue compartments results in hundreds of thousands of complications annually. current methods for blood vessel cannulation or epidural, chest tube, and initial trocar placement often involve the blind pass of a needle through several layers of tissue and generally rely on distinguishable anatomic landmarks and a high degree of clinical skill. to address this simply and without the use of electronics, a purely mechanical cl ... | 2009 | 19307560 |
| prevalence, intensity and identity of bacteraemia following conservative dental procedures in children. | the aim of this study was to investigate the prevalence, intensity and microbial identity of bacteraemia following conservative dental procedures. the procedures were placement of rubber dam, use of the fast drill, use of the slow drill and placement of a matrix band and wedge. | 2009 | 19416445 |
| brief communication: minimally invasive bone sampling method for dna analysis. | obtaining a bone sample for dna analysis has traditionally been a destructive practice, which has resulted in reluctance on behalf of curators for skeletal collections to allow invasive testing. a novel minimally invasive bone sampling method for dna analysis is presented here. this method uses a conventional hand drill wherein the bone sample is extracted from the intercondylar fossa of the femur; it does not interfere with any known anthropometric landmarks and only leaves a small hole on the ... | 2009 | 19350643 |
| determination of spatial distribution of increase in bone temperature during drilling by infrared thermography: preliminary report. | during the drilling of the bone, the temperature could increase above 47 degrees c and cause irreversible osteonecrosis. the spatial distribution of increase in bone temperature could only be presumed using several thermocouples around the drilling site. the aim of this study was to use infrared thermographic camera for determination of spatial distribution of increase in bone temperature during drilling. | 2009 | 18421465 |
| an orthotopic murine model of human spinal metastasis: histological and functional correlations. | there is currently no reproducible animal model of human spinal metastasis that allows for laboratory study of the human disease. consequently, the authors sought to develop an orthotopic model of spinal metastasis by using a human lung cancer cell line, and to correlate neurological decline with tumor growth. | 2009 | 19558282 |
| in vitro comparison of cortical bone temperature generation between traditional sequential drilling and a newly designed step drill in the equine third metacarpal bone. | to compare heat generation and time to finish between a new step drill and sequential drilling in order to create a 6.2 mm pilot hole for insertion of a positive profile transfixation pin into the equine third metacarpal bone. | 2009 | 19876527 |
| nest expansion assay: a cancer systems biology approach to in vitro invasion measurements. | traditional in vitro cell invasion assays focus on measuring one cell parameter at a time and are often less than ideal in terms of reproducibility and quantification. further, many techniques are not suitable for quantifying the advancing margin of collectively migrating cells, arguably the most important area of activity during tumor invasion. we have developed and applied a highly quantitative, standardized, reproducible nest expansion assay (nea) to measure cancer cell invasion in vitro, whi ... | 2009 | 19594934 |
| hydroxyapatite particles maintain peri-implant bone mantle during osseointegration in osteoporotic bone. | in osteoporotic bones, resorption exceeds formation during the remodelling phase of bone turnover. as a consequence, decreased bone volume and bone contact result in the peri-implant region. this may subsequently lead to loss of fixation. in this study we investigated whether the presence of nonresorbable, osteoconductive hydroxyapatite (ha) particles could help maintain a denser and more functional peri-implant bone structure. titanium screws were implanted into the proximal tibial metaphysis o ... | 2009 | 19679208 |
| propulsion of african trypanosomes is driven by bihelical waves with alternating chirality separated by kinks. | trypanosoma brucei, a parasitic protist with a single flagellum, is the causative agent of african sleeping sickness. propulsion of t. brucei was long believed to be by a drill-like, helical motion. using millisecond differential interference-contrast microscopy and analyzing image sequences of cultured procyclic-form and bloodstream-form parasites, as well as bloodstream-form cells in infected mouse blood, we find that, instead, motility of t. brucei is by the propagation of kinks, separating l ... | 2009 | 19880745 |
| histologic evaluation of the effects of er:yag laser on bone ablation. | the aim of the present study was to compare the healing of bone defects created using an er:yag laser with those defects created using a surgical bone drill. | 2009 | 19838612 |
| superior vestibular neurectomy: a novel transmeatal approach for a denervation of the superior and lateral semicircular canals. | to assess morphologically a transmeatal approach to the lateral and superior ampullary nerves performable under local anesthesia and simultaneously with the existing approach to the singular nerve developed by gacek during the same operation. | 2009 | 19574943 |
| relationship between equipment and infrastructure for pandemic influenza and performance in an avian flu drill. | effective preparedness for pandemic influenza necessitates acquisition and maintenance of vital equipment and infrastructure. the aim of this study was to investigate the relationship between the level of hospital preparedness relating to infrastructure and equipment and performance of the hospital in an avian flu drill. | 2009 | 19850801 |
| comparison of two mechanical intraosseous infusion devices: a pilot, randomized crossover trial. | administration of medications via the intraosseous (io) route has proven to be a lifesaving procedure in critically ill or injured children. two mechanical io infusion devices have been approved for use in children, the spring-loaded io infusion device (bone injection gun, big) and the battery-powered io infusion drill (ez-io). the objective of this pilot study was to compare the success rates for insertion and the ease-of-use of the two devices. | 2009 | 19586701 |
| potential risk of thermal damage to cervical nerve roots by a high-speed drill. | using the transverse processes of fresh porcine lumbar spines as an experimental model we evaluated the heat generated by a rotating burr of a high-speed drill in cutting the bone. the temperature at the drilled site reached 174 degrees c with a diamond burr and 77 degrees c with a steel burr. with water irrigation at a flow rate of 540 ml/hr an effective reduction in the temperature was achieved whereas irrigation with water at 180 ml/hr was much less effective. there was a significant negative ... | 2009 | 19880905 |
| in vitro microleakage of composite restorations prepared by er:yag/er,cr:ysgg lasers and conventional drills associated with two adhesive systems. | the objective of this in vitro study was to compare the degree of microleakage of composite restorations performed by lasers and conventional drills associated with two adhesive systems. | 2009 | 19603586 |
| evaluation of a transcondylar toggle system for stabilization of the cranial cruciate deficient stifle in small dogs and cats. | to evaluate use of a transcondylar toggle system (tcts) for stabilization of the cranial cruciate ligament (crcl) deficient stifle in small dogs and cats. | 2009 | 20017856 |
| comparison of three drilling techniques for carpometacarpal joint arthrodesis in horses. | to evaluate 3 drilling techniques for arthrodesis of the equine carpometacarpal (cmc) joint. | 2009 | 20017858 |
| treatment of carpometacarpal osteoarthritis by arthrodesis in 12 horses. | to evaluate arthrodesis as a treatment for carpometacarpal joint osteoarthritis (cmc-oa). | 2009 | 20017860 |
| the role of haptic feedback in laparoscopic simulation training. | laparoscopic virtual reality simulators are becoming a ubiquitous tool in resident training and assessment. these devices provide the operator with various levels of realism, including haptic (or force) feedback. however, this feature adds significantly to the cost of the devices, and limited data exist assessing the value of haptics in skill acquisition and development. utilizing the laparoscopy vr (immersion medical, gaithersburg, md), we hypothesized that the incorporation of force feedback i ... | 2009 | 19631336 |
| mechanical response of periodontal ligament: effects of specimen geometry, preconditioning cycles and time lapse. | this study was conducted as part of research line addressing the mechanical response of periodontal ligament (pdl) to tensile-compressive sinusoidal loading. the aim of the present project was to determine the effect of three potential sources of variability: (1) specimen geometry, (2) tissue preconditioning and (3) tissue structural degradation over time. for the three conditions, selected mechanical parameters were evaluated and compared. (1) standard flat specimens (obtained by sequentially s ... | 2009 | 19665135 |
| description of tessaracoccus profundi sp.nov., a deep-subsurface actinobacterium isolated from a chesapeake impact crater drill core (940 m depth). | a novel actinobacterium, designated cb31(t), was isolated from a 940 m depth sample of a drilling core obtained from the chesapeake meteor impact crater. the strain was isolated aerobically on r2a medium agar plates supplemented with nacl (20 g l(-1)) and mgcl2 x 6 h2o (3 g l(-1)). the colonies were circular, convex, smooth and orange. cells were slightly curved, rod-shaped in young cultures and often appeared in pairs. in older cultures cells were coccoid. cells stained gram-positive, were non- ... | 2009 | 19669589 |
| an in vitro comparison of different cementation strategies on the pull-out strength of a glass fiber post. | to evaluate the effect of different strategies for post cementation on the pullout bond strength of a double-tapered glass fiber post cemented into a root canal. materials and | 2009 | 19678450 |
| infrared thermographic evaluation of temperature modifications induced during implant site preparation with cylindrical versus conical drills. | abstract background: a few studies have investigated the influence of drilling on bone healing. many factors have been reported to influence temperature rise during surgical preparation for implant placement: drill geometry, drilling depth, sharpness of the cutting tool, drilling speed, pressure applied to the drill, use of graduated versus one-step drilling, intermittent versus continuous drilling, and use or not of irrigation. purpose: the objective of this study was to quantify the temperatur ... | 2009 | 19681941 |
| rat pinealectomy: a modified direct visual approach. | to report a new, direct visual approach for rat pinealectomy. | 2009 | 19705033 |
| pilot test of the salt mass casualty triage system. | no existing mass casualty triage system has been scientifically scrutinized or validated. a recent work group sponsored by the centers for disease control and prevention, using a combination of expert opinion and the extremely limited research data available, created the salt (sort-assess-lifesaving interventions-treat/transport) triage system to serve as a national model. an airport crash drill was used to pilot test the salt system. | 2009 | 19731169 |
| bone damage induced by different cutting instruments--an in vitro study. | the aim of this study was to compare the peripheral bone damage induced by different cutting systems. four devices were tested: er:yag laser (2.94 mm), piezosurgery, high-speed drill and low-speed drill. forty-five bone sections, divided into 9 groups according to different parameters, were taken from pig mandibles within 1 h post mortem. specimens were fixed in 10% buffered formalin, decalcified and cut in thin sections. four different parameters were analyzed: cut precision, depth of incision, ... | 2009 | 19738951 |
| central sensitization induced in trigeminal and upper cervical dorsal horn neurons by noxious stimulation of deep cervical paraspinal tissues in rats with minimal surgical trauma. | this study investigated if central sensitization is induced in the trigeminal subnucleus caudalis (also termed the medullary dorsal horn) and c1 and c2 dorsal horns by noxious stimulation of deep upper cervical paraspinal tissues in a preparation relatively free of surgical trauma. | 2009 | 19748401 |
| impacts of seeding rate on interactions between rice and rice water weevils. | the rice water weevil, lissorhoptrus oryzophilus kuschel, is the most widely distributed and destructive early season insect pest of rice, oryza sativa l., in the united states. economic losses result primarily from feeding by the larval stage of this insect on the roots of flooded rice plants. prior studies suggest that infestations of rice water weevil larvae are more severe at low plant densities. moreover, because feeding by the rice water weevil reduces rice plant tillering, a process parti ... | 2009 | 19886448 |
| drive-through triage and care system: lessons learned from a pandemic drill. | 2009 | 19914497 | |
| frontal sinus obliteration by a composite multifractured osteoperiosteal flap: a pilot study. | the objective result is to obliterate the frontal sinus by a neo-osteogenic tissue, which develops behind the composite multifractured osteoperiosteal flap (cmof) tailored from the anterior wall's bone cortex of the frontal sinus in the new zealand rabbit model. in this study, as surgical objects 4 new zealand rabbits were used. first, in each animal, the cmof was formed from the anterior wall's bone cortex of the frontal sinus. after obtaining the cmof, the remainder of the cortical bone of the ... | 2009 | 19806048 |
| fatigue resistance of teeth restored with fiber posts and different post cementation strengths. | this study sought to evaluate how different post cementation strategies affected the fatigue resistance of bovine teeth restored with glass fiber posts. the canals of 63 single-rooted bovine teeth (each 16 mm in length) were prepared to 9 mm using a preparation drill from a double-tapered fiber post system. each specimen was embedded in a pvc cylinder using acrylic resin up to 3 mm of the most coronal portion of the specimen and was allocated into one of seven groups (n = 9) based on the strateg ... | 2009 | 19819817 |
| development of a permanently controllable rotating biopsy device, part i: theoretical considerations and in-vitro results for five different prototypes. | to develop different prototypes of permanently controllable rotating biopsy devices with determination of the most efficient prototype in biopsies in bovine myocardium. | 2009 | 19862657 |
| assessment of respirable dust exposures in an opencast coal mine. | all major opencast mining activities produce dust. the major operations that produce dust are drilling, blasting, loading, unloading, and transporting. dust not only deteriorates the environmental air quality in and around the mining site but also creates serious health hazards. therefore, assessment of dust levels that arise from various opencast mining operations is required to prevent and minimize the health risks. to achieve this objective, an opencast coal mining area was selected to genera ... | 2009 | 18592389 |
| the influence of stents on the performance of an ultrasonic navigation system for endovascular procedures. | image-guided surgery provides a mechanism to accurately and quickly assess the location of surgical tools relative to a preoperative image. traditional image-guided surgery relies on infrared or radiofrequency triangulation to determine an instrument location relative to a preoperative image and has been primarily used in head and neck procedures. advances in ultrasonic tracking devices, designed for tracking catheters within vessels, may provide an opportunity for image-guided endovascular proc ... | 2009 | 19782522 |
| who is referred for sedation for dentistry and why? | to assess referrals to sedation, examining dental anxiety and background of patients, and compare these characteristics to those referred to a restorative dentistry clinic. | 2009 | 19329945 |
| soft bone primary stability of 3 different miniscrews for orthodontic anchorage: a resonance frequency investigation. | several miniscrews are available for skeletal anchorage. they have different geometries with self-drilling or self-tapping features. the aim of this study was to evaluate the soft bone primary stability of 3 different orthodontic screws by using the resonance frequency analysis. | 2009 | 19409347 |
| elcatonin injections suppress systemic bone resorption without affecting cortical bone regeneration after drill-hole injuries in mice. | it is assumed that there are systemic changes in mineral metabolism during fracture healing that may cause a predisposition to sequential fractures in osteoporotic patients who suffered from previous fractures. initial therapies for patients with osteoporotic fractures are important to prevent disabilities in daily life consequent to bone and muscle atrophies, and sequential fractures, although systemic and local bone metabolism during fracture healing have not been well understood. we evaluated ... | 2009 | 19489046 |
| hospitals advised to play it safe when it comes to h1n1. | review, drill on your existing response plans and look for any "holes" that may exist. survey your staff to determine if you will have adequate coverage in the event of a pandemic. make sure supplies are adequate and staff education is up to date. | 2009 | 19548608 |
| effect of surgical drill guide on heat generated from implant drilling. | the purpose of this study was to evaluate the heat generated in bone by 2 implant drill systems in vitro with and without using surgical drill guides. | 2009 | 19925988 |
| a new method for overhead drilling. | in the construction sector, overhead drilling into concrete or metal ceilings is a strenuous task associated with shoulder, neck and back musculoskeletal disorders due to the large applied forces and awkward arm postures. two intervention devices, an inverted drill press and a foot lever design, were developed then compared to the usual method by construction workers performing their normal overhead drilling activities (n = 14). while the intervention devices were rated as less fatiguing than th ... | 2009 | 19941190 |
| intraosseous ultrasonography to determine the accuracy of drill hole positioning prior to the placement of pedicle screws: an experimental study. | dorsal fixation with rods and pedicle screws (pss) is the most frequently used surgery to correct traumatic and degenerative instabilities of the human spine. prior to screw placement, screw holes are drilled along the vertebral pedicles. despite the use of a variety of techniques, misplacement of screw holes, and consequently of the pss, is a common problem. the authors investigated the usefulness of an intraspinal, intraosseous ultrasonography technique to determine the accuracy of drill hole ... | 2009 | 19951019 |
| an auditory illusion of infinite tempo change based on multiple temporal levels. | humans and a few select insect and reptile species synchronise inter-individual behaviour without any time lag by predicting the time of future events rather than reacting to them. this is evident in music performance, dance, and drill. although repetition of equal time intervals (i.e. isochrony) is the central principle for such prediction, this simple information is used in a flexible and complex way that accommodates both multiples, subdivisions, and gradual changes of intervals. the scope of ... | 2009 | 19997635 |
| financial burden of emergency preparedness on an urban, academic hospital. | this study assessed the direct human resource costs of a hospital's emergency preparedness planning (in 2005) by surveying participants retrospectively. forty participants (74% of the identified population) were surveyed. using the self-reported hourly salary of the participant, a direct salary cost was calculated for each participant. the population was 40% male and 60% female; 65% had a graduate degree or higher; 65% were administrators; 35% were clinicians; and 50% reported that their job des ... | 2009 | 20066636 |
| [effect of post space preparation on the sealability of root canal filled with 3 filling methods]. | to evaluate the effect of post space preparation on the sealability of canals filled with 3 filling methods. | 2009 | 20143029 |
| mechanisms of the protective effects of bmscs promoted by tmdr with heparinized bfgf-incorporated stent in pig model of acute myocardial ischemia. | this study investigates the mechanism by which transmyocardial drilling revascularization combined with heparinized basic fibroblast growth factor incorporated degradable stent implantation (tmdrsi) enhanced effects of bone marrow mesenchymal stem cells (bmscs) transplantation against acute ischemic myocardial injury. after the mid-third of left anterior descending artery was ligated, miniswine were divided into none-treatment group (control, n = 6), bmscs implantation group (c, n = 6), tmdrsi g ... | 2010 | 20406325 |
| evaluation of biomechanical and histological features of vertebrae following vertebroplasty using hydroxyapatite blocks. | vertebroplasty was performed using hydroxyapatite blocks to examine the course of compressive strength and histological features in a dog model. the vertebral fracture model was prepared by punching a hole in the center of the vertebra and at 4 sites around the vertebra (5 holes in total) from the front side of the vertebra using an air drill and hollowing the holes. measurements were made on healthy vertebrae, vertebrae from the vertebral fracture model, vertebrae removed from animals immediate ... | 2010 | 20192147 |
| viability of equine embryos after puncture of the capsule and biopsy for preimplantation genetic diagnosis. | the equine embryo possesses a capsule that is considered essential for its survival. we assessed viability after breaching the capsule of early (day 6) and expanded (day 7 and 8) equine blastocysts by micromanipulation. the capsule was penetrated using a piezo drill, and trophoblast biopsy samples were obtained for genetic analysis. pregnancy rates for day-6 embryos, which had intact zonae pellucidae at the time of recovery, were 3/3 for those biopsied immediately after recovery and 2/3 for thos ... | 2010 | 20843896 |