Results 221 to 230 of about 17,173 (240)

Analysis of the osseous/metal interface of drill free screws and self-tapping screws

Journal of Cranio-Maxillofacial Surgery, 2001
Aim: 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
openaire   +3 more sources

Theoretical modelling of the self-tapping screw fastening process

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2001
The results of a theoretical study of the self-tapping screw insertion process are presented. Fundamental concepts of engineering mechanics are employed to analyse the axial torque required to complete a general self-tapping screw insertion operation.
Seneviratne, L D, Ngemoh, F A, Earles, S W E, Althoefer, K A   +3 more
openaire   +2 more sources

Self-tapping Screws as Reinforcement for Structural Timber Elements

2021
The 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
openaire   +2 more sources

Simulation of a Screw Self-tapping Process

2019
With 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, Sivaraman Rajan, Harish Krishnamurthy, Ravindra Venkataramu   +3 more
openaire   +1 more source

Delayed fracture on self-tapping screws

Metallurgical Science and Tecnology, 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

Danger of self-drilling self-tapping screws: case report

The Egyptian Orthopaedic Journal, 2018
Some locking plate systems make use of self-drilling and self-tapping screws. Theoretically, this technology facilitates insertion and decreases operative time. This case illustrates one possible danger of broken screws in these systems. They may carry a risk of migration within the soft tissue, which could endanger vital structures along it course of ...
openaire   +1 more source

Behaviour of Self-Tapping Screws Under Shear

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

Self tapping screws from Astra Tech

British Dental Journal, 2002
openaire   +1 more source

Self-drilling intermaxillary fixation screw: an efficacious alternative to self-tapping screw

International Journal of Oral and Maxillofacial Surgery, 2007
A. Dhawan, J.N. Shetty
openaire   +1 more source