Results 191 to 200 of about 4,576,853 (213)

The effect of repetitive screw hole use on the retentive strength of pretapped and self-tapped screws

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
openaire   +2 more sources

Incidence of Transcortical Tibial Fractures with Self‐Tapping and Non‐Self‐Tapping Screws in a Canine TPLO Model

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
openaire   +2 more sources

Delayed fracture on self-tapping screws

2013
Hydrogen induced fracture on two different screw stocks (UNI C16 modified and UNI C23BKD) was analysed.Fracture toughness has been evaluated by area reduction measurements carried out on carbonitrided specimens, fractured by tensile test, and rupture angle measurements on specimens broken by torsion tests.Specimens were cathodically charged with ...
Quadrini, E., Polenta, R.
openaire   +1 more source

Self-tapping screw fixation of the Austin osteotomy.

The Journal of foot surgery, 1990
The authors present an alternative method of fixation for the Austin bunionectomy using the Richards self-tapping screw. A description of the screw and method of application is included. In more than 250 osteotomies fixated by this technique, no complications inherent to the self-tapping screw have been encountered.
M S, Klein, F A, Ognibene, R P, Erali, C L, Hendrix   +3 more
openaire   +1 more source

Pretapped and self-tapping screws in the human midface: Torque measurements and bone screw interface

International Journal of Oral and Maxillofacial Surgery, 1990
Better contact between AO miniscrews and the bone and greater resistance against torque are achieved in the human midface if the thread is not pretapped. This was demonstrated by 60 methacrylate fixed human midfacial bone sections and by 100 torque measurements. It is concluded that pretapping is not to be recommended in the thin bone of the midface.
openaire   +2 more sources

Mechanical properties of self-tapping screws and nails in wood

Canadian Journal of Civil Engineering, 2002
This paper presents results of a research programme investigating the mechanical properties of self-tapping screws and nails in wood. The programme consisted of deformation-controlled tests to determine embedment strength, withdrawal strength, pull-through strength, bending capacity of individual screws, shear strength of screwed and nailed wood–wood ...
openaire   +2 more sources

Behaviour of Self-Tapping Screws Under Shear

2023
M. Divya, R. Senthilkumar, Prince George
openaire   +1 more source

Calibration of Resistance Factor for Self-Tapping Screws in Canada

Journal of Structural Engineering, 2022
T. Joyce, Y. H. Chui
openaire   +1 more source

Specification for self-tapping screws and metallic drive screws

2014
openaire   +1 more source

Specification for self-tapping screws and metallic drive screws

2013
openaire   +1 more source