Publications
| Title | Abstract | Year(sorted descending) Filter | PMID Filter |
|---|
| comparative performance of orangutans (pongo spp.), gorillas (gorilla gorilla gorilla), and drills (mandrillus leucophaeus), in an ephemeral foraging task. | a goal of the comparative approach is to test a variety of species on the same task. here, we examined whether the factors that helped capuchin monkeys improve their performance in a dichotomous choice task would generalize to three other primate species: orangutans, gorillas, and drill monkeys. in this task, subjects have access to two options, each resulting in an identical food, but one (the ephemeral option) is only available if it is chosen first, whereas the other one (the permanent option ... | 2020 | 33135209 |
| genome sequences of novel members of previously described dna and rna virus families, isolated from feces of a drill monkey in nigeria. | the genomes of seven novel members of previously described dna and rna virus families are described here. these viruses were recovered using a viral metagenomic approach from the stool of a drill monkey (mandrillus leucophaeus) housed in a sanctuary in cross river state, nigeria. | 2020 | 32327518 |
| competition, seed dispersal and hunting: what drives germination and seedling survival in an afrotropical forest? | disentangling the contributions of different processes that influence plant recruitment, such as competition and seed dispersal, is important given the increased human-mediated changes in tropical forest ecosystems. previous studies have shown that seedling communities in an afrotropical rainforest in southeastern nigeria are strongly affected by the loss of important seed-dispersing primates, including cross river gorillas (gorilla gorilla diehli), chimpanzee (pan troglodytes elioti) and drill ... | 2019 | 31024680 |
| detection of hepatitis e virus antibodies among cercopithecidae and hominidae monkeys in cameroon. | we screened hepatitis e from 15 species of non-human primates. anti-hev igg was detected in 11.1% (1/9) mandrillus sphinx, 14.3% (2/14) gorilla gorilla, 5.9% (4/67) pan troglodytes and 8.7% (2/23) mandrillus leucophaeus, whereas anti-hev igm was detected in 1.5% (1/18) papio anubis, 28.6% (2/7) cercocebus agilis and 1.5% (1/67) pan troglodyte. | 2019 | 31179536 |
| detection of hev-specific antibodies in four non-human primate species, including great apes, from different zoos in germany. | the hepatitis e virus (hev) has been described in humans and various animal species in different regions of the world. however, the knowledge on natural hev infection in non-human primates and the corresponding risk of zoonotic transmission is scarce. to determine whether primates in captivity are affected by hev infection, we investigated 259 individual sera of clinically healthy non-human primates of 14 species from nine german zoos. using a commercial double-antigen-sandwich elisa and a comme ... | 2018 | 29168441 |
| the complete mitochondrial genome of the drill (mandrillus leucophaeus). | the drill (mandrillus leucophaeus) is a primate of the family cercopithecidae (old world monkeys). drills are among africa's most endangered mammals, and are listed by the iucn as the highest conservation priority of all african primates and are used as a model for cytomegalovirus vaccine and antiviral development. here, we describe the complete mitochondrial genome (mitogenome) sequence of m. leucophaeus. the genome is 16 547 bp in length, comprising 13 protein-coding genes, 22 trnas, 2 rrnas a ... | 2017 | 26691103 |
| femoral tunnels' length changes with knee flexion angle in anatomical anterior cruciate ligament reconstruction. | the objective of our study was to evaluate the effect that knee flexion angle while femoral tunnels are being drilled may have on the length of these tunnels, in anatomical reconstruction of the anterior cruciate ligament. | 2017 | 27042629 |
| dried and free flowing granules of spinacia oleracea accelerate bone regeneration and alleviate postmenopausal osteoporosis. | the aim of this study was to demonstrate the efficacy of extract derived from spinacia oleracea extract (soe) in reversing bone loss induced by ovariectomy and bone healing properties in a drill-hole fracture model in rats. | 2017 | 28118295 |
| push-out bond strength of root-end filling materials. | the aim of this study was to evaluate the bond strength of root-end filling materials. forty 2-mm-thick slices were obtained from human single-rooted teeth. after root canal preparation using a 1.5 mm diameter cylindrical drill, the dentinal walls were prepared by diamond ultrasonic tip (cvd t0f-2). the specimens were divided according the material (n=10): mta angelus (mtaa), mta sealer (mtas, experimental), sealer 26 (s26) and zinc oxide and eugenol cement (zoe). the push-out test was performed ... | 2017 | 27224569 |
| image-guided intrathecal baclofen pump catheter implantation: a technical note and case series. | objective medically refractory spasticity and dystonia are often alleviated with intrathecal baclofen (itb) administration through an indwelling catheter inserted in the lumbar spine. in patients with cerebral palsy, however, there is a high incidence of concomitant neuromuscular scoliosis. itb placement may be technically challenging in those who have severe spinal deformity or who have undergone prior instrumented thoracolumbar fusion. although prior reports have described drilling through the ... | 2017 | 28156208 |
| a predictive bone drilling force model for haptic rendering with experimental validation using fresh cadaveric bone. | bone drilling simulators with virtual and haptic feedback provide a safe, cost-effective and repeatable alternative to traditional surgical training methods. to develop such a simulator, accurate haptic rendering based on a force model is required to feedback bone drilling forces based on user input. current predictive bone drilling force models based on bovine bones with various drilling conditions and parameters are not representative of the bone drilling process in bone surgery. the objective ... | 2017 | 27549761 |
| thermal variation during osteotomy with different dental implant drills: a standardized study in bovine ribs. | this study evaluated thermal variation (heat generation) by dental drills of similar geometries, made from different materials, during performance of 450 standardized osteotomies in bovine ribs to simulate implant site preparations. | 2017 | 28114241 |
| changes in the surface of bone and acid-etched and sandblasted implants following implantation and removal. | the aim of this study was to determine whether there are any changes in the surface of bone or implant structures following the removal of a screwed dental implant. | 2017 | 27011744 |
| effect of cleaning methods on bond strength of self-etching adhesive to dentin. | the aim of this study was to investigate the influence of cleaning methods to remove zinc oxide-eugenol-based root canal sealer (endomethasone) on the bond strength of the self-etching adhesive to dentin. | 2017 | 26957789 |
| robot assisted navigated drilling for percutaneous pedicle screw placement: a preliminary animal study. | there is much more radiation exposure to the surgeons during minimally invasive pedicle screws placement. in order to ease the surgeon's hand-eye coordination and to reduce the iatrogenic radiation injury to the surgeons, a robot assisted percutaneous pedicle screw placement is useful. this study assesses the feasibility and clinical value of robot assisted navigated drilling for pedicle screw placement and the results thus achieved formed the basis for the development of a new robot for pedicle ... | 2017 | 26229168 |
| can cement film thickness influence bond strength and fracture resistance of fiber reinforced composite posts? | this study compared the influence of cement film thickness (cft) on bond strength (bs) and fracture resistance (fr) of fiber-reinforced composite (frc) posts to root canal. | 2016 | 26319977 |
| thermal cycling can extend tool life in orthopaedic operating rooms. | thermal cycling is a temperature modulation process developed to improve the performance, durability and longevity of materials. this process has been successfully utilized in the automotive, aeronautic and manufacturing industries. surgical cutting tools undergo cyclical loading and generally fail by dulling, suggesting that thermal cycling may improve their performance and longevity. ten 2.5 mm orthopaedic drill bits were randomized, with five undergoing thermal cycling within their sterile pa ... | 2016 | 26296244 |
| in vitro assessment with the infrared thermometer of temperature differences generated during implant site preparation: the traditional technique versus the single-drill technique. | to assess in vitro, using an infrared (ir) thermometer, temperature changes generated at implant sites by osteotomies involving two different drilling methods (with multiple drills versus only one) and to measure the influence of irrigation on the temperature variation. | 2016 | 25040939 |
| effects of stocking rate, forage management, and grazing management on performance and economics of cow-calf production in southwest arkansas. | the objective this research was to determine the effect of application of multiple grazing management practices at 2 stocking rates (sr) on the productivity and economics of the cow-calf enterprise in the southeastern united states over a 4-yr period. pasture management systems included: continuous grazing management at a moderate sr (0.8 ha/cow; cg) without additional forage management, rotational grazing management at a moderate sr (0.8 ha/cow (mr) with addition of stockpiled bermudagrass [ (l ... | 2016 | 27898900 |
| data on biodegradation of total petroleum hydrocarbons using co-composting of cow manure/oily drill wastes. | oil drill cuttings are challenging wastes in oil sites especially in khuzestan province, a major oil producing region in iran. as co- composting is a simple and eco- friendly technique for bioremediation of oil base drill cutting, this data article designed to describe co- composting of oil base drill cutting with cow manure. the data suggest that with optimized mixture of cow manure/oily drill wastes (here, 20:1) could engender more effective treatment of the wastes (with final total petroleum ... | 2016 | 27830167 |
| effect of the drilling technique on heat generation during osteotomy preparation for wide-diameter implants. | to test the hypothesis that there would be no difference in heat generation by reducing the number of drills during the implant site preparation relative to conventional drilling sequence. | 2016 | 27540847 |
| effects of a drill diameter on the temperature rise in a bone during implant site preparation under clinical conditions. | heat, generated during the drilling of a dental implant site preparation, leads to a temperature rise and consequently to a thermal injury of the bone tissue surrounding the implant site, which can cause the subsequent implant failure. in this article, we present new findings related to the temperature rise during implant site drilling under real conditions on a bovine rib bone specimen. the experiments were designed with the help of a full-factorial design in randomized complete blocks, where t ... | 2016 | 27459501 |
| in-vitro analysis of forces in conventional and ultrasonically assisted drilling of bone. | drilling of bone is widely performed in orthopaedics for repair and reconstruction of bone. current paper is focused on the efforts to minimize force generation during the drilling process. ultrasonically assisted drilling (uad) is a possible option to replace conventional drilling (cd) in bone surgical procedures. | 2016 | 27175471 |
| exploring thermal anisotropy of cortical bone using temperature measurements in drilling. | bone drilling is widely used in orthopaedics for fracture treatment, reconstructive surgery and bone biopsy. heat generation in bone drilling can cause rise in bone temperature resulting in prolonged healing time or loosening of fixation. | 2016 | 27175466 |
| the influence of drill length and irrigation system on heat production during osteotomy preparation for dental implants: an ex vivo study. | this study aimed to measure the influence of drill length and irrigation system on heat production during osteotomy preparation for dental implants using bovine bone rib as experimental model. | 2016 | 27041138 |
| evaluating a filtering and recirculating system to reduce dust drift in simulated sowing of dressed seed and abraded dust particle characteristics. | the pneumatic precision drills used in maize sowing can release dust owing to abrasion of dressed seed; the drift of dust containing insecticide active ingredients is harmful to honey bees. therefore, we developed a device for drills that uses partial recirculation and filtration of the air by means of an antipollen and an electrostatic filter. | 2016 | 27607021 |
| chronic subdural hematoma. | chronic subdural hematoma (csdh) is one of the most common neurosurgical conditions. there is lack of uniformity in the treatment of csdh amongst surgeons in terms of various treatment strategies. clinical presentation may vary from no symptoms to unconsciousness. csdh is usually diagnosed by contrast-enhanced computed tomography scan. magnetic resonance imaging (mri) scan is more sensitive in the diagnosis of bilateral isodense csdh, multiple loculations, intrahematoma membranes, fresh bleeding ... | 2016 | 27695533 |
| assessing households preparedness for earthquakes: an exploratory study in the development of a valid and reliable persian-version tool. | iran is placed among countries suffering from the highest number of earthquake casualties. household preparedness, as one component of risk reduction efforts, is often supported in quake-prone areas. in iran, lack of a valid and reliable household preparedness tool was reported by previous disaster studies. this study is aimed to fill this gap by developing a valid and reliable tool for assessing household preparedness in the event of an earthquake. | 2016 | 26981326 |
| evaluation of the insertion torque, implant stability quotient and drilled hole quality for different drill design: an in vitro investigation. | the purpose of the present study was to compare the insertion torque and implant stability quotient between different drill design for implant site preparation. | 2016 | 26957224 |
| bone formation and degradation behavior of nanocrystalline hydroxyapatite with or without collagen-type 1 in osteoporotic bone defects - an experimental study in osteoporotic goats. | the intention of the current work is to assess new bone formation and degradation behavior of nanocrystalline hydroxyapatite with (ha/col-1) or without collagen-type i (ha) in osteoporotic metaphyseal bone defects in goats. after ovariectomy and special low-calcium diet for three months, 3 drill hole defects in the vertebrae of l3, l4, l5, 4 drill hole defects in the right and left iliac crest and 1 drill hole defect at the distal femur were created in three chinese mountain goats with a total o ... | 2016 | 27338229 |
| extraction of an incisor embedded within the nasal cavity in two guinea pigs. | oral examination of two guinea pigs revealed that the unilateral incisor was absent. on radiographic examination, the incisor was identified within the nasal cavity in both patients. under anesthesia in both patients, the skin was incised from the nostril to 1.5 cm proximal, and the premaxilla and part of the maxilla were exposed. the bone was removed using a surgical drill, and the incisor was exposed in the nasal cavity. the root was grasped with forceps and carefully extracted as it was degra ... | 2016 | 26118492 |
| treatment of petroleum drill cuttings using bioaugmentation and biostimulation supplemented with phytoremediation. | this study sought to compare the effectiveness of bioaugmentation and biostimulation, as well as the combination of both techniques, supplemented with phytoremediation, in the decontamination of petroleum drill cuttings. drill cuttings with relatively low concentration of total petroleum hydrocarbons (tph) and metals were mixed with soil in the ratio 5:1 and treated with three different combinations of the bioremediation options. option a entailed bioaugmentation supplemented with phytoremediati ... | 2016 | 27128694 |
| predation mechanisms of rapana venosa (gastropoda: muricidae) in different biotopes along the black sea coast. | mechanisms of feeding by the invasive gastropod rapana venosa from different biotopes of 11 sites along the black sea coast are discussed. two methods--edge-drilling and suffocation--are used, but the prevailing method in a particular biotope depends on the type of bivalve prey. drill signs were present on almost all shells of chamelea gallina, captured by rapa whelks in field conditions, while in a field experiment, only 11% of all empty mytilus galloprovincialis had drilling signatures. the de ... | 2016 | 26242971 |
| assessment of simulated mandibular condyle bone lesions by cone beam computed tomography. | there are many limitations to image acquisition, using conventional radiography, of the temporomandibular joint (tmj) region. the computed tomography (ct) scan is a better option, due to its higher accuracy, for purposes of diagnosis, surgical planning and treatment of bone injuries. the aim of the present study was to analyze two protocols of cone beam computed tomography for the evaluation of simulated mandibular condyle bone lesions. spherical lesions were simulated in 30 dry mandibular condy ... | 2016 | 21180970 |
| an empirical study of the wound effect on sap flux density measured with thermal dissipation probes. | the insertion of thermal dissipation (td) sensors on tree stems for sap flux density (sfd) measurements can lead to sfd underestimations due to a wound formation close to the drill hole. however, the wound effect has not been assessed experimentally for this method yet. here, we propose an empirical approach to investigate the effect of the wound healing on measured sap flux with td probes. the approach was performed for both, diffuse-porous (fagus sylvatica (linnaeus)) and ring-porous (quercus ... | 2016 | 27587487 |
| tunnel collision during simultaneous anterior cruciate ligament and posterolateral corner reconstruction. | to verify the safest angle to drill femoral tunnels in simultaneous anterior cruciate ligament (acl) and posterolateral corner (plc) reconstructions to minimize the risk of tunnel collision and to examine the relationship between lateral femoral condyle (lfc) width and tunnel collision occurrence. | 2016 | 25288339 |
| improving the welfare of a zoo-housed male drill (mandrillus leucophaeus poensis) aggressive toward visitors. | improving the welfare of nonhuman animals in captivity and maintaining behavioral competence for future conservation purposes is of the highest priority for zoos. the behavior of an aggressive male drill (mandrillus leucophaeus poensis) was assessed in barcelona zoo. the 2-year study presented in this article examined the effects of introducing changes in the exhibit of the drill to improve his welfare by analyzing scan behaviors. first, a partial visual barrier was applied and proved to be insu ... | 2016 | 26983783 |
| a versatile drill-stand dolly for photomacrography. | 2016 | 4845991 | |
| from frugivore to folivore: altitudinal variations in the diet and feeding ecology of the bioko island drill (mandrillus leucophaeus poensis). | variation in the quality and availability of food resources can greatly influence the ecology, behavior, and conservation of wild primates. we studied the influence of altitudinal differences in resource availability on diet in wild drill monkeys (mandrillus leucophaeus poensis) on bioko island, equatorial guinea. we compared fecal samples (n = 234) collected across three consecutive dry seasons for drills living in lowland (0-300 m asl) forest with nearby (18 km distance) drills living in monta ... | 2015 | 26375479 |
| complete genome sequences of mandrillus leucophaeus and papio ursinus cytomegaloviruses. | the complete genome sequences of mandrillus leucophaeus and papio ursinus cytomegaloviruses were determined. an isolate from a drill monkey, ocom6-2, and an isolate from a chacma baboon, ocom4-52, were subjected to pyrosequencing and assembled. comparative alignment of published primate cytomegaloviruses (cmvs) showed variable sequence conservation between species. | 2015 | 26251484 |
| genetic characterization of near full length sivdrl genomes from four captive drills (mandrillus leucophaeus). | we sequenced near full length sivdrl genomes from four captive drills (mandrillus leucophaeus). all four animals were born in captivity in german zoos. although serologically siv negative before acquisition in zoo a in 2008 and 2009, during a routine analysis all four animals were determined to be siv antibody positive in 2011. comparisons of the four new sivdrl sequences showed high identity among each other (90.7-97.7% in env) and to the only published full length sequence sivdrl fao (90.5-92. ... | 2015 | 25523403 |
| a fluid bait for remedial control of subterranean termites. | a fluid bait, comprising α-cellulose and fine-ground phagostimulants (summon preferred food source) impregnated with 0.5% hexaflumuron (ai wt/wt) and mixed with 1% methylcel solution to yield 10% dry weight, was injected into simulated foraging galleries of coptotermes formosanus shiraki and reticulitermes virginicus (banks) for a laboratory efficacy evaluation. six weeks after the injection, mortalities for both species exceeded 90%, and all termites died by the eight wk. the fluid bait can be ... | 2015 | 26470130 |
| torque analysis of a triple acid-etched titanium implant surface. | the present study aimed to evaluate the removal torque of titanium implants treated with triple acid etching. twenty-one rats were used in this study. for all animals, the tibia was prepared with a 2 mm drill, and a titanium implant (2 × 4 mm) was inserted after treatment using the subtraction method of triple acid etching. the flaps were sutured. seven animals were killed 14, 28, and 63 days after implant installation, and the load necessary for removing the implant from the bone was evaluated ... | 2015 | 26543898 |
| assessing the potential impact of water-based drill cuttings on deep-water calcareous red algae using species specific impact categories and measured oceanographic and discharge data. | the potential impact of drill cuttings on the two deep water calcareous red algae mesophyllum engelhartii and lithothamnion sp. from the peregrino oil field was assessed. dispersion modelling of drill cuttings was performed for a two year period using measured oceanographic and discharge data with 24 h resolution. the model was also used to assess the impact on the two algae species using four species specific impact categories: no, minor, medium and severe impact. the corresponding intervals fo ... | 2015 | 26412110 |
| a histological study of non-ceramic hydroxyapatite as a bone graft substitute material in the vertical bone augmentation of the posterior mandible using an interpositional inlay technique: a split mouth evaluation. | the aim of this study was to compare the influence of graft material (non-ceramic hydroxyapatite versus autologous bone) on bone behaviour and perform a resonance frequency analysis of implants placed in augmented sites to evaluate stability. for this study, 11 patients with bilateral edentulous areas in the mandibular posterior region were selected. alveolar augmentation osteotomies were bilaterally (split mouth design) performed. in one hemiarch, the space generated by the osteotomy was grafte ... | 2015 | 26325427 |
| long- and short-term effects of smothering and burial by drill cuttings on calcareous algae in a static-renewal test. | discharge of drill cuttings into the ocean during drilling of offshore oil wells can impact benthic communities through an increase in the concentrations of suspended particles in the water column and sedimentation of particles on the seafloor around the drilling installation. the present study assessed effects of water-based drill cuttings, barite, bentonite, and natural sediments on shallow- and deep-water calcareous algae in short-term (30 d) and long-term (90 d) experiments, using 2 species ... | 2015 | 25689779 |
| dimethyloxalylglycine lyophilized onto bone substitutes increase vessel area in rat calvarial defects. | pharmacological inhibitors of prolyl hydroxylases, also termed hypoxia-mimetic agents (hmas), when repeatedly injected can support angiogenesis and bone regeneration. however, the possible role of hma loaded onto bone substitutes to support angiogenesis and bone regeneration under diabetic condition is unknown. the capacity of hma loaded onto deproteinized bovine bone mineral (dbbm) to support angiogenesis and bone formation was examined in diabetic wistar rats. | 2015 | 25196581 |
| effects of implant drill wear, irrigation, and drill materials on heat generation in osteotomy sites. | this study evaluated the effects of drill wear on bone temperature during osteotomy preparation with 3 types of drills and compared heat production between drills. the drills used in this study were titanium nitride-coated metal, tungsten carbide carbon-coated metal, and zirconia ceramic drills. an osteotomy 11 mm in depth was formed in bovine scapular bone following the manufacturer's recommended drill sequences. drilling was performed without irrigation and repeated 20 times; temperature was m ... | 2015 | 24313461 |
| induction of rapid and selective cell necrosis in drosophila using bacillus thuringiensis cry toxin and its silkworm receptor. | genetic ablation of target cells is a powerful tool to study the origins and functions of cells, tissue regeneration, or pathophysiology in a human disease model in vivo. several methods for selective cell ablation by inducing apoptosis have been established, using exogenous toxins or endogenous proapoptotic genes. however, their application is limited to cells with intact apoptotic machinery. | 2015 | 26152191 |
| comparison of antifungal activity of 2% chlorhexidine, calcium hydroxide, and nanosilver gels against candida albicans. | residual microorganisms in the root canal system (rcs) after endodontic therapy such as candida albicans are a major cause of endodontic failure. calcium hydroxide (ch) and chlorhexidine (chx) have suitable antimicrobial activity against bacteria and can be used as intracanal medicaments. nanosilver has also shown antimicrobial activity against microorganisms. this study aimed to compare the antifungal effect of calcium hydroxide, 2% chlorhexidine and nanosilver gels on candida albicans. | 2015 | 26056520 |
| microfiber cloths reduce the transfer of clostridium difficile spores to environmental surfaces compared with cotton cloths. | environmental surfaces in health care facilities contaminated with clostridium difficile spores can be a reservoir that contribute to transmission of hospital-acquired infections. microfiber cleaning cloths may improve the effectiveness of surface cleaning. the objective of this study was to assess the removal and transfer of c difficile spores on surfaces cleaned by microfiber compared with cotton cloths. | 2015 | 25907782 |
| a no-notice drill of hospital preparedness in responding to ebola virus disease in taiwan. | the ebola virus was first discovered in 1976, but the outbreak of ebola virus disease that began in guinea, west africa, in december 2013 shocked the world. it is the largest and most severe epidemic of ebola virus disease to date. the us centers for disease control and prevention confirmed that inadequate implementation of the policy of acquiring travel history led to a delay in identifying the first imported ebola virus disease case. the taiwan centers for disease control developed a no-notice ... | 2015 | 26381373 |
| the pendulum drill guide. a method to direct and confirm guide pin location in hip pinning. | 2015 | 4837052 | |
| well water contamination in a rural community in southwestern pennsylvania near unconventional shale gas extraction. | reports of ground water contamination in a southwestern pennsylvania community coincided with unconventional shale gas extraction activities that started late 2009. residents participated in a survey and well water samples were collected and analyzed. available pre-drill and post-drill water test results and legacy operations (e.g., gas and oil wells, coal mining) were reviewed. fifty-six of the 143 respondents indicated changes in water quality or quantity while 63 respondents reported no issue ... | 2015 | 25734827 |
| ultrasound effect in the removal of intraradicular posts cemented with different materials. | this study evaluated the effect of ultrasonic vibration on the tensile strength required to remove intraradicular post cemented with different materials. | 2015 | 26323445 |
| the erratic behavior of lesions in burnt bone. | this study analyses depressed fractures (by blunt force trauma) and circular full-thickness injuries (drill injuries and gunshot wounds) in charred bones. fifty bovine ribs (total 104 lesions) were divided into three groups. the first group consisted in 20 depressed hammer-produced fractures; in the second one, 60 round drill-holes were produced (30 circular, 30 semicircular); in the third group, 12 fleshed and 12 skeletonized ribs were hit by 9-mm bullets. each specimen was carbonized in an ele ... | 2015 | 26257320 |
| external cooling efficiently controls intraosseous temperature rise caused by drilling in a drilling guide system: an in vitro study. | the purpose of this study was to measure the rise in intraosseous temperature caused by drilling through a drilling guide system. we compared the rise in temperature generated, and the number of increases of more than 10 °c, between drills that had been cooled with saline at room temperature (25 °c) and those that had not been cooled, for every step of the drilling sequence. cortical layers of bovine ribs were used as specimens, and they were drilled through 3-dimensional printed surgical guides ... | 2015 | 26250363 |
| intraosseous heat generation during sonic, ultrasonic and conventional osteotomy. | to assess heat generation in osteotomies during application of sonic and ultrasonic saws compared to conventional bur. | 2015 | 26116310 |
| heat generation and drill wear during dental implant site preparation: systematic review. | to identify factors that minimise damage during the drilling of sites for dental implants, we reviewed published papers on the amount of heat that is generated. we systematically searched english language studies published between january 2000 and february 2014 on medline/pubmed and found 41 articles, of which 27 related to an increase in temperature during preparation of the site. we found only basic research with a low level of evidence. most of the studies were in vitro, and osteotomies were ... | 2015 | 26051868 |
| drill wear monitoring in cortical bone drilling. | medical drills are subject to intensive wear due to mechanical factors which occur during the bone drilling process, and potential thermal and chemical factors related to the sterilisation process. intensive wear increases friction between the drill and the surrounding bone tissue, resulting in higher drilling temperatures and cutting forces. therefore, the goal of this experimental research was to develop a drill wear classification model based on multi-sensor approach and artificial neural net ... | 2015 | 25922212 |
| influence of underpreparation on primary stability of implants inserted in poor quality bone sites: an in vitro study. | the purpose of this present study was to investigate the relation between implant site underpreparation and primary stability in the presence of poor-quality bone. | 2015 | 25861691 |
| influence of insertion techniques for resin cement and mechanical cycling on the bond strength between fiber posts and root dentin. | to evaluate the effect of the insertion technique for resin cement and mechanical cycling on the bond strength between fiber posts and root dentin. | 2015 | 25859568 |
| optimization of multiple quality characteristics in bone drilling using grey relational analysis. | drilling of bone is common during bone fracture treatment to fix the fractured parts with screws wires or plates. minimally invasive drilling of the bone has a great demand as it helps in better fixation and quick healing of the broken bones. the purpose of the present investigation is to determine the optimum cutting condition for the minimization of the temperature, force and surface roughness simultaneously during bone drilling. | 2015 | 25829751 |
| effect of irrigation and stainless steel drills on dental implant bed heat generation. | the objective of this study is assessing the influence of the use of different drill types and external irrigation on heat generation in the bone. in-vitro study to compare two different sequences for implant-bed preparation by means of two stainless steels: precipitation-hardening stainless steel (aisi 420b) (k drills), and martensitic stainless steel (aisi 440) (s drills). besides, the drilled sequences were realized without irrigation, and with external irrigation by means of normal saline so ... | 2015 | 25631272 |
| cortical bone drilling: an experimental and numerical study. | bone drilling is a common surgical procedure in orthopedics, dental and neurosurgeries. in conventional bone drilling process, the surgeon exerts a considerable amount of pressure to penetrate the drill into the bone tissue. controlled penetration of drill in the bone is necessary for safe and efficient drilling. | 2014 | 25515053 |
| temperature changes and chondrocyte death during drilling in a bovine cartilage model and chondroprotection by modified irrigation solutions. | drilling into cartilage/bone is often required for orthopaedic surgery. while drilling into bone has been studied, the response of cartilage has received little attention. we have measured cartilage and drill bit temperatures during drilling and quantified the zone of chondrocyte death (zcd) around the hole in the presence/absence of irrigation solutions. | 2014 | 24859895 |
| experimental and analytical investigation of the thermal necrosis in high-speed drilling of bone. | bone loss due to thermo necrosis may weaken the purchase of surgically placed screws and pins, causing them to loosen postoperatively. the heat generated during the bone drilling is proportional to cutting speed and force and may be partially dissipated by the blood and tissue fluids, and somehow carried away by the chips formed. increasing cutting speed will reduce cutting force and machining time. therefore, it is of interest to study the effects of the increasing cutting speed on bone drillin ... | 2014 | 24569922 |
| the influence of platelet-rich fibrin on angiogenesis in guided bone regeneration using xenogenic bone substitutes: a study of rabbit cranial defects. | the purpose of this study was to investigate the influence of platelet-rich fibrin (prf) on angiogenesis and osteogenesis in guided bone regeneration (gbr) using xenogenic bone in rabbit cranial defects. | 2014 | 24530076 |
| heat generated during seating of dental implant fixtures. | frictional heat can be generated during seating of dental implants into a drill-prepared osteotomy. this in vitro study tested the heat generated by implant seating in dense bovine mandible ramus. a thermocouple was placed approximately 0.5 mm from the rim of the osteotomy during seating of each dental implant. four diameters of implants were tested. the average temperature increases were 0.075°c for the 5.7-mm-diameter implant, 0.97°c for the 4.7-mm-diameter implant, 1.4°c for the 3.7-mm-diamet ... | 2014 | 24400840 |
| phytoremediation of abandoned crude oil contaminated drill sites of assam with the aid of a hydrocarbon-degrading bacterial formulation. | environmental deterioration due to crude oil contamination and abandoned drill sites is an ecological concern in assam. to revive such contaminated sites, afield study was conducted to phytoremediate four crude oil abandoned drill sites of assam (gelakey, amguri, lakwa, and borholla) with the aid of two hydrocarbon-degrading pseudomonas strains designated n3 and n4. all the drill sites were contaminated with 15.1 to 32.8% crude oil, and the soil was alkaline in nature (ph8.0-8.7) with low moistu ... | 2014 | 24933892 |
| how can bee colony algorithm serve medicine? | healthcare professionals usually should make complex decisions with far reaching consequences and associated risks in health care fields. as it was demonstrated in other industries, the ability to drill down into pertinent data to explore knowledge behind the data can greatly facilitate superior, informed decisions to ensue the facts. nature has always inspired researchers to develop models of solving the problems. bee colony algorithm (bca), based on the self-organized behavior of social insect ... | 2014 | 25489530 |
| drill burrs for anterior decompression of the spinal cord--a new device. | we have devised a new drill burr that is particularly suitable for an anterior approach to the spinal cord. the drill burr is conical in shape, with a shaft attached to its top and fine diamond edges on the curved slope, but not on its tip. the bone is scraped off while the burr is being gently pulled up but not pressed down. this new drill burr has proved to be most useful in safely removing osteophytes and hypertrophied uncovertebral joints without damaging the already compromised spinal cord. | 2014 | 4035548 |
| [value of punch and puncture drill biopsy in the diagnosis of tuberculous spondylitis]. | thanks to a specially designed guide instrumentarium, punch and drill aspiration biopsy for the vertebrae and intervertebral spaces have become routine diagnostic procedures which any patient can be expected to tolerate. with the authors' puncture technique material can be obtained from a single vertebra at various heights or simultaneously from different segments with the drilling cannula. for an experienced osteopathologist histologic assessment of the tissue cylinders obtained or of aspirated ... | 2014 | 3962445 |
| hospitals prepare plans, drill staff to ensure that potential ebola patients are identified, isolated, and managed safely. | hospitals around the country have stepped up their efforts to train staff and implement procedures to ensure the safe identification and management of any patients with signs of ebola virus disease (evd). ronald reagan ucla medical center in los angeles, ca, held an "ebola preparedness exercise" to give staff an opportunity to walk through the hospital's protocol for handling a simulated patient with evd. the university of alabama at birmingham (uab) medical center has held similar exercises, an ... | 2014 | 25522495 |
| antibacterial effect of triantibiotic mixture, chlorhexidine gel, and two natural materials propolis and aloe vera against enterococcus faecalis: an ex vivo study. | the aim of this ex vivo study was to compare the antimicrobial effect of triantibiotic paste, 0.2% chlorhexidine gel, propolis and aloe vera on enterococcus faecalis in deep dentin. | 2014 | 25225560 |
| cyclospora spp. in drills, bioko island, equatorial guinea. | 2014 | 24565509 | |
| contaminants in human nail dust: an occupational hazard in podiatry? | there has been limited literature indicating that podiatrists' health may be at risk from exposure to human nail dust. previous studies carried out in the uk have shown that large amounts of dust become airborne during the human nail drilling procedure and are present in the air up to 10 hours after a clinical session. this increases the risk of respiratory tract (rt) infection for the practitioner. | 2014 | 24552311 |
| [a modified hohmann spike and a combined drill for the insertion of hip-prostheses]. | 2014 | 4261885 | |
| the change in energy absorbed post removal of metalwork in a simulated paediatric long bone fracture. | the surgical treatment of paediatric fractures is increasing. open reduction and internal fixation (orif) with plates and screws is long established, whilst the use of elastic stable intramedullary nailing (esin) has become increasingly popular. this study quantifies, in terms of the energy required to produce a fracture, the biomechanical sequelae of both techniques post removal of metalwork, to provide clinicians with evidence to guide post-operative advice. | 2014 | 25160647 |
| experimental analysis of drilling process in cortical bone. | bone drilling is an essential part in orthopaedics, traumatology and bone biopsy. prediction and control of drilling forces and torque are critical to the success of operations involving bone drilling. this paper studied the drilling force, torque and drilling process with automatic and manual drill penetrating into bovine cortical bone. the tests were performed on a drilling system which is used to drill and measure forces and torque during drilling. the effects of drilling speed, feed rate and ... | 2014 | 24008016 |
| a novel standardized bone model for thermal evaluation of bone osteotomies with various irrigation methods. | based on a novel standardized bovine specimen, the aim of this study was to investigate thermal effects of different irrigation methods during intermittent and graduated drilling. | 2014 | 23347297 |
| thermal effects of a combined irrigation method during implant site drilling. a standardized in vitro study using a bovine rib model. | the purpose of this study was to evaluate the temperature changes during implant osteotomies with a combined irrigation system as compared to the commonly used external and internal irrigation under standardized conditions. | 2014 | 23009204 |
| hawk calls elicit alarm and defensive reactions in captive geoffroy's marmosets (callithrix geoffroyi). | most descriptions of callitrichid antipredator behavior have come from observations of visual encounters with predators, but there is also anecdotal evidence suggesting that callitrichids may use auditory cues associated with raptors for the early detection of potential danger. in the present study, geoffroy's marmosets consistently reacted to the tape-recorded calls of a red-tailed hawk (buteo jamaicensis) with high-intensity antipredator behaviors. compared to the taped calls of a raven (corvu ... | 2014 | 12826731 |
| effect of splinting in accuracy of two implant impression techniques. | because there is no consensus in the literature about the need for a splint between copings, the aim of this study was to evaluate, in vitro, the accuracy of 2 impression techniques for implant-supported prostheses. a master cast was fabricated with four parallel implant abutment analogs and a passive framework. two groups with 5 casts each were formed: group 1 (squared impression copings with no splint: s) and group 2 (splinted squared impression copings, using metal drill burs and pattern resi ... | 2014 | 25506658 |
| influence of the λ780nm laser light on the repair of surgical bone defects grafted or not with biphasic synthetic micro-granular hydroxylapatite+beta-calcium triphosphate. | the treatment of bone loss due to different etiologic factors is difficult and many techniques aim to improve repair, including a wide range of biomaterials and, recently, photobioengineering. this work aimed to assess, through histological analysis the aim of this study was to assess, by light microscopy, the repair of bone defects grafted or not with biphasic synthetic micro-granular calcium hydroxyapatite (ha)+beta-tcp associated or not with laser phototherapy - lpt (λ780nm). forty rats were ... | 2014 | 24463564 |
| temporal bone dissection practice using a chicken egg. | temporal bone drilling practice constitutes an essential stage in training for the surgical approach to this complex anatomic structure. to facilitate adaptation and surgical skills in otologic surgery, we recall the easy cost-effective practice of drilling a chicken egg. | 2014 | 24841916 |
| muscle activity and fatigue in the shoulder muscles during repetitive work. an electromyographic study. | the amplitude distribution probability function (adpf) and the power spectrum of the surface electromyogram from m. deltoideus anterior, m. infraspinatus and m. trapezius pars descendens were analyzed from 7 persons working at a pillar drill. recordings were performed 6 times during a working day. the adpf was analyzed from 2-3 work-cycles from each recording. the static contraction level was 11.0% mcv in m. deltoideus anterior, 8.5% mvc in m. infraspinatus, and 20.5% mcv in m. trapezius, withou ... | 2014 | 3948856 |
| drill needle biopsy for breast cancer. | from 1977 to 1983 we have used electric drill needle biopsy of suspicious masses in the breast in 437 patients. in 104 patients with primary breast carcinoma 94 were diagnosed correctly by the initial biopsy, 9 were found on the second or third biopsy and one on the subsequent excisional biopsy. the rate of accuracy of the initial biopsy was 90.4 per cent. the diameters of the 104 carcinomas were less than 2 cm in 62 (59.6 per cent), 2-5 cm in 39 (37.5 per cent) and 5 cm or more in 3 (2.9 per ce ... | 2014 | 4032864 |
| tension pneumocephalus after evacuation of chronic subdural hematoma and subsequent treatment with continuous lumbar subarachnoid infusion and craniostomy drainage. | we present a case of tension pneumocephalus after burr hole evacuation of bilateral chronic subdural hematomas. subsequent treatment was effected with combined twist drill closed system drainage and continuous intrathecal infusion of a physiological solution. the clinical entity, tension pneumocephalus, and the use of continuous subarachnoid infusion and drainage as a method of cerebral reexpansion are discussed. | 2014 | 3974807 |
| [on the clinical aspects of severe forms of vibration disease in drill operators]. | 2014 | 4238358 | |
| [osteosynthesis of the low lumbar spine and spondylolisthesis. modification of the scholner plate and pedicular screwing]. | a modification of roy camille's technic for better screw location into the pedicle of vertebra of the low lumbar column and lumbo-sacral junction is reported. a small 5 millimeters resection of the inferior articular process allows a more cranial drill-hole which is more steadily in the pedicle of the vertebra as confirmed by x rays controls and anatomic specimens. a 10 degree slope to a caudal direction is needed at the l5 level and a 30 degree slope to a caudal direction is required at s1 leve ... | 2013 | 3831774 |
| root distribution and potential interactions between allelopathic rice, sprangletop (leptochloa spp.), and barnyardgrass (echinochloa crus-galli) based on ¹³c isotope discrimination analysis. | weed-suppressive rice cultivars hold promise for improved and more economical weed management in rice. interactions between roots of rice and weeds are thought to be modulated by the weed-suppressive activity of some rice cultivars, but these phenomena are difficult to measure and not well understood. thus, above-ground productivity, weed suppression, and root distribution of 11 rice cultivars and two weed species were evaluated in a drill-seeded, flood-irrigated system at stuttgart, arkansas, u ... | 2013 | 23397455 |
| the role of subtotal petrosectomy in cochlear implant surgery--a report of 32 cases and review on indications. | to report and review 32 cases of subtotal petrosectomy (sp) in cochlear implant (ci) surgery and to define the indications and contraindications for this procedure. | 2013 | 23856625 |
| porous cap/silk composite scaffolds to repair femur defects in an osteoporotic model. | the most common complication for patients with postmenopausal osteoporosis is bone-related defects and fractures. while routine medication has a high probability of undesirable side effects, new approaches have aimed to develop regeneration procedures that stimulate new bone formation while reversing bone loss. recently, we have synthesized a new hybrid cap/silk scaffold with a cap-phase distribution and pore architecture better suited to facilitate cell differentiation and bone formation. the a ... | 2013 | 23674058 |
| ct-guided percutaneous drilling is a safe and reliable method of treating osteoid osteomas. | computed tomography (ct)-guided percutaneous drilling is an alternative for osteoid osteoma treatment. this study aims to evaluate the remodeling of the drill orifice. the success rate and complications were also recorded and compared with other treatment methods. fifteen patients with an average age of fourteen years (ranging from 4 to 25) submitted to ct-guided percutaneous drilling between 2003 and 2009 were retrospectively analyzed according to clinical and radiological criteria. fourteen ca ... | 2013 | 23519705 |
| biomechanical effect of one session of low-level laser on the bone-titanium implant interface. | low-level laser (lll) has been used on peri-implant tissues for accelerating bone formation. however, the effect of one session of lll in the strength of bone-implant interface during early healing process remains unclear. the present study aims to evaluate the removal torque of titanium implants irradiated with lll during surgical preparation of implant bed, in comparison to non-irradiation. sixty-four wistar rats were used. half of the animals were included in lll group, while the other half r ... | 2013 | 22825319 |
| identification of effective best management practices in sediment yield diminution using geowepp: the kasilian watershed case study. | identifying areas that are susceptible to soil erosion is crucial for water resource planning and management efforts. furthermore, modeling has proven helpful in recognizing and monitoring high-risk areas at the watershed scale. the water erosion prediction project (wepp) geospatial interface (geowepp) software integrates gis with the wepp to analyze the spatial variation in soil loss, and it has been used as a modeling tool to determine the areas that are most prone to soil erosion and to evalu ... | 2013 | 23780730 |
| influence of the drill material and method of cooling on the development of intrabony temperature during preparation of the site of an implant. | our aim was to evaluate the intrabony friction heat produced by implant drills, using different drill materials and methods of cooling. four pilot drills and 4 form drills were used. the following combinations of drill material and cooling supply were tested: steel and external cooling; steel and internal cooling; steel coated with zirconium nitride and external cooling; and zirconium oxide and external cooling. the handpiece that supported the drill was fixed in a lifting device. specimens of b ... | 2013 | 22417718 |
| pull-out bond strength of a fibre-reinforced composite post system luted with self-adhesive resin cements. | due to morphological differences along the root canal, serious structural damage, or extensive endodontic preparation, cement thickness of luted fibre-reinforced composite (frc) post systems can largely vary. this study aimed at evaluating the effects of a self-etch (multilink automix, mla) and various self-adhesive resin cements (g-cem, gcm; maxcem elite, mxe; relyx unicem, rlx; smartcem 2, smc) on the pull-out bond strengths of frc posts to root canal dentine, and to compare the effects of dif ... | 2013 | 24007789 |
| arthroscopic surgical tools: a source of metal particles and possible joint damage. | our goals were (1) to characterize metal microparticles created by standard arthroscopic instruments and (2) to examine the in vitro cellular responses induced by those particles, including possible synergistic effects with local anesthetic. | 2013 | 23910000 |