Results 21 to 30 of about 17,578 (277)

Drive-in torque for self-tapping screws into timber [PDF]

Proceedings of the Institution of Civil Engineers - Construction Materials, 2022
Self-tapping screws have been widely used in timber constructions. The current practice considers self-tapping screws perform best in connecting two members when they are fully threaded; however, the drive-in resistance caused by the friction between the wood and the screw can potentially damage the screw and reduce the effectiveness of its ...
Cong Zhang, Kiho Jung, Richard Harris, Wen-Shao Chang   +3 more
openaire   +2 more sources

End-threaded intramedullary positive profile screw ended self-tapping pin (Admit pin) - A cost-effective novel implant for fixing canine long bone fractures [PDF]

Veterinary World, 2018
Aim: The current study was undertaken to evaluate the clinical efficacy of end-threaded intramedullary pinning for management of various long bone fractures in canines.
Mitin Chanana, Adarsh Kumar, Som Prakash Tyagi, Amit Kumar Singla, Arvind Sharma, Uiase Bin Farooq   +5 more
doaj   +1 more source

Biomechanical evaluation of peak reverse torque (PRT) in a dynamic compression plate-screw construct used in a goat tibia segmental defect model

BMC Veterinary Research, 2019
Background Peak reverse torque (PRT) is a valid method to evaluate implants’ secondary stability in the healing bone. The secondary stability is achieved by the implant over time and it has been positively correlated with the implants’ osseointegration ...
Remigiusz M. Grzeskowiak, Carrie Wheeler, Elizabeth Taylor, James Lillich, James Roush, Alexandru S. Biris, David E. Anderson   +6 more
doaj   +1 more source

Numerical simulation of bone screw induced pretension: The cases of under-tapping and conical profile [PDF]

, 2014
Even though screw induced pretension impacts the holding strength of bone screws, its implementation into the numerical simulation of the pullout phenomenon remains a problem with no apparent solution.
CHATZISTERGOS, Panagiotis, Kourkoulis, Stavros K., Magnissalis, Evangelos A.   +2 more
core   +1 more source

Analysis of locking self-taping bone screws for angularly stable plates [PDF]

, 2017
Paper focuses on biomechanics, specifically on locking cortical bone screws in angularly stable plates used for the treatment of bone fractures in the medical fields of traumatology and orthopaedics. During extraction of titanium-alloy implants, problems
Demel, Jiří, Frydrýšek, Karel, Pleva, Leopold, Sejda, František, Čada, Radek   +4 more
core   +1 more source

Medium to long-term outcome of thoracoscapular arthrodesis with screw fixation for facioscapulohumeral muscular dystrophy [PDF]

, 2013
Background: Shoulder girdle muscle weakness is the most constant feature of facioscapulohumeral muscular dystrophy and leads to scapular winging. Mechanical fixation of the scapula to the thoracic wall provides a stable fulcrum on which the deltoid ...
Atoun, Ehud, Copeland, Stephen, Levy, Ofer, Narvani, Ali, Sforza, Giuseppe, Van Tongel, Alexander   +5 more
core   +2 more sources

Влияние кинематики процесса свинчивания на качество гладкорезьбовых соединений [PDF]

, 2016
В статті наведені результати теоретичних та експериментальних досліджень різьбоформування саморізальними різьбоформуючими гвинтами під дією постійного осьового навантаження.
Danylova, L., Waiyaki, T., Вайякі, Киари Ентоні, Данилова, Л. Н.   +3 more
core   +1 more source

Experimental and numerical analysis of the unreinforced and reinforced notched timber beam by a screw

Vietnam Journal of Science, Technology and Engineering, 2018
Timber is highly anisotropic. It behaves differently in diverse directions. Tension and compression perpendicular to the grain present a low strength with respect to the ones parallel to the grain.
Van Dang Tran, Dong Tran, Marc Oudjene
doaj   +1 more source

Geometry of anchoring miniscrew in the lateral palate that support a tissue bone borne maxillary expander affects neighboring root damage

Scientific Reports, 2021
Anchoring miniscrews used for a tissue bone borne maxillary expander (C-expander) can fail if they contact tooth roots or perforate the maxillary sinus. Cone beam computed tomography images were reviewed retrospectively to evaluate the geometric factors ...
Song Hee Oh, Sae Rom Lee, Jin-Young Choi, Hyo-Won Ahn, Seong-Hun Kim, Gerald Nelson   +5 more
doaj   +1 more source

Comparative evaluation of insertion torque and mechanical stability for self-tapping and self-drilling orthodontic miniscrews – an in vitro study

Head & Face Medicine, 2017
Background The aim of the present study was to evaluate the relationship between insertion torque and stability of miniscrews in terms of resistance against dislocation, then comparing a self-tapping screw with a self-drilling one.
Michele Tepedino, Francesco Masedu, Claudio Chimenti   +2 more
doaj   +1 more source