Results 161 to 170 of about 2,111 (208)
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Self-Drilling and Self-Tapping Screws
Journal of Craniofacial Surgery, 2010The aim of the current study was to compare self-drilling and self-tapping screws with regard to bone contact and the production of bone debris using scanning electron microscopy.Three New Zealand rabbit calvariae were used. Self-tapping and self-drilling screws were inserted into the outer surface of the skull with and without saline solution ...
Juliana Gonçalves, Goelzer +5 more
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Clinical Orthopaedics and Related Research, 1981
The heads of self-tapping and non-self-tapping screws in dog femurs were exposed to a cyclic shearing force of 110 N for 200 loading cycles. This cyclic shear loading created a decrease in pull-out strength for both screw types of approximately 11% (p less than 0.01).
C T, Vangsness +2 more
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The heads of self-tapping and non-self-tapping screws in dog femurs were exposed to a cyclic shearing force of 110 N for 200 loading cycles. This cyclic shear loading created a decrease in pull-out strength for both screw types of approximately 11% (p less than 0.01).
C T, Vangsness +2 more
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Analysis of the osseous/metal interface of drill free screws and self-tapping screws
Journal of Cranio-Maxillofacial Surgery, 2001Aim: A comparison of metal/osseous interface and bone remodelling after insertion of different types of titanium bone screws in vivo. Material: Samples of five of each of the following bone screw types were inserted into the anterior wall of the frontal sinus of five Göttingen minipigs: self-tapping micro- (1.5 mm) and miniscrews (2.0 mm) or drill free
W, Heidemann, H, Terheyden, K L, Gerlach
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Simulation of a Screw Self-tapping Process
2019With the ever-increasing demand to use lightweight materials in the automotive industry, automakers are keen on using plastics across their products. Plastics are predominantly held together using adhesives, screws, or snaps. Screws are promising when axial reinforcement between the components is desired. Self-tapping screws are now the preferred type,
Kushagr Goyal +3 more
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[Research on Self-tapping Performance Test of Self-tapping Bone Screws].
Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation, 2022To study the self-tapping performance test method of self-tapping bone screws based on the YY/T 1505 standard.With reference to the method of YY/T 1505, various factors affecting the self-tapping force test was optimised, and the self-tapping force judgment method was improved.The experimental results showed that the self-tapping force obtained by the ...
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Pullout Strength of Self-Tapping Screws Inserted to Different Depths
Journal of Orthopaedic Trauma, 2005The purpose of this study was to determine whether the depth of insertion through the far cortex of self-tapping screws significantly affects pullout strength.Fifty, Synthes, 3.5-mm, self-tapping screws were inserted into synthetic bone blocks and divided into 5 groups. Group 1 had screws with their tips inserted 1 mm short of the far cortex.
Robert, Berkowitz +2 more
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Comparison of Compression and Torque Measurements of Self-Tapping and Pretapped Screws
Plastic and Reconstructive Surgery, 1989The choice of an internal fixation system for maxillofacial surgery is made difficult because of lack of information with respect to functional load. This study attempted to clarify some of the controversy with respect to maxillofacial use of these implants. Maximal compressive force to torque values were measured in standardized bone thicknesses of 1,
J H, Phillips, B A, Rahn
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Journal of Oral and Maxillofacial Surgery, 1990
Multiple systems for internal screw fixation are presently in use in oral and maxillofacial surgery. These systems differ in screw diameter, material, and design. This study evaluated the uniaxial pullout strength of five screw systems. Two-millimeter, 2.7-mm, and 3.5-mm screws were initially evaluated for pullout strength.
W L, Foley, D E, Frost, M R, Tucker
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Multiple systems for internal screw fixation are presently in use in oral and maxillofacial surgery. These systems differ in screw diameter, material, and design. This study evaluated the uniaxial pullout strength of five screw systems. Two-millimeter, 2.7-mm, and 3.5-mm screws were initially evaluated for pullout strength.
W L, Foley, D E, Frost, M R, Tucker
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Veterinary Surgery, 2012
ObjectiveTo compare the incidence of radiographically apparent transcortical diaphyseal tibial fractures between self‐tapping screws (STS) and non‐self‐tapping screws (NSTS) in a canine tibial plateau leveling osteotomy (TPLO) model.Study DesignCase series.AnimalsDogs (n = 106) that had TPLO.MethodsNSTS (n = 107), STS titanium (n = 104), or STS ...
Christina, Boekhout, Alan, Cross
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ObjectiveTo compare the incidence of radiographically apparent transcortical diaphyseal tibial fractures between self‐tapping screws (STS) and non‐self‐tapping screws (NSTS) in a canine tibial plateau leveling osteotomy (TPLO) model.Study DesignCase series.AnimalsDogs (n = 106) that had TPLO.MethodsNSTS (n = 107), STS titanium (n = 104), or STS ...
Christina, Boekhout, Alan, Cross
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Self-tapping Screws as Reinforcement for Structural Timber Elements
2021The use of self-tapping screws is a state-of-the-art practice in fastener and reinforcement technologies for timber structures. The high axial stiffness and load-carrying capacity of self-tapping screws, together with their easy handling, make them one of the most economical choices for applications in both fastener and reinforcement domains.
Dietsch, Philipp, Ringhofer, Andreas
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