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Evaluation of implant abutment screw head deformation in hexagonal and star designs after successive tightening and loosening [PDF]

open access: yesJournal of Advanced Periodontology and Implant Dentistry, 2023
Background. Tightening and loosening of the prosthetic components of the implant are carried out with various screw designs. This study compared the rate of deformation of the abutment screw in two hexagonal and star screw head designs after consecutive ...
Tahereh Ghaffari   +5 more
doaj   +1 more source

Salvaging Pull-Out Strength in a Previously Stripped Screw Site: A Comparison of Three Rescue Techniques

open access: yesJournal of Functional Morphology and Kinesiology, 2021
Screw stripping during bone fixation is a common occurrence during operations that results in decreased holding capacity and bone healing. We aimed to evaluate the rescue of the stripped screw site using screws of different dimensions.
Francesco Addevico   +2 more
doaj   +1 more source

Research on Thermal Compensation of x-Axis Partition of Drilling and Tapping Center Machine Tools

open access: yesIEEE Access, 2023
As one of the most commonly used metal cutting machines in modern manufacturing industry, the drilling and tapping center machine tool has an irreplaceable position in modern manufacturing industry due to its high operating speed and fast tool changing ...
Lianzhou Yu   +4 more
doaj   +1 more source

Effects of Exposure Time and Temperature on Screw Driving Torques in Heat-Treated Anatolian Black Pine and Sessile Oak Wood

open access: yesDrvna Industrija, 2022
This study aimed to investigate the characteristics of screw driving torques in heat-treated Anatolian black pine and sessile oak wood. The wood samples were subjected to heat under atmospheric pressure at three different temperatures (130, 180 and 230 ...
Mehmet Karamanoglu, Önder Tor
doaj   +1 more source

SUBSTANTIATION OF THE BASIC PARAMETERS OF THE SCREW EXPANDER FOR PROCESSING HIGH PROTEIN CROPS [PDF]

open access: yesVolga Region Farmland, 2020
The article provides a way to increase the productivity of a screw press variety – the expander. The use of an expander makes it possible to produce compound feed in the form of non-solid whole meals, which has a beneficial effect on the process of ...
M.G. Zagoruiko   +2 more
doaj   +1 more source

Incorporation of an Allogenic Cortical Bone Graft Following Arthrodesis of the First Metatarsophalangeal Joint in a Patient with Hallux Rigidus

open access: yesLife, 2021
Hallux rigidus is degenerative arthritis of the first metatarsophalangeal joint characterized by pain and stiffness in the joint with limitation of motion and functional impairment.
Iva Brcic   +6 more
doaj   +1 more source

Screw-Type Symmetry in Machine Components and Design at Implementation on a 3D Printer [PDF]

open access: yesJournal of Mechanical Engineering, 2019
The creation of mathematical models for the implementation of 3D printing is of considerable interest, which is associated with the active introduction of 3D printing in various industries.
Tatyana I. Sheyko   +2 more
doaj   +1 more source

Finite element analyses of female-thread forming process and loosening proof of self-tapping screw

open access: yesNihon Kikai Gakkai ronbunshu, 2023
Tapping screw fabricates the female thread due to plastic deformation during screw rotation. Since the tapping screw skips the preliminary fabrication of female thread, it is widely used for the tightening in the fields of such as electric parts and car ...
Yujin TOMITA   +5 more
doaj   +1 more source

KARAKTERISASI PENGECORAN POROS BERULIR (SCREW) DENGAN VARIABEL PADUAN UNSUR TITANIUM BORON DAN MAGNESIUM

open access: yesRekayasa Mesin, 2022
Aluminum is a non-ferrous metal that is widely used in everyday life, both on a large and small industrial scale as well as a household scale. In this research, used diesel motor piston material for casting screw.
Andika Wisnujati   +2 more
doaj   +1 more source

Fragment Compression through Distal Locking Hole by Screw with Washer: A Supplement to Nailing in Distal Tibia Fractures [PDF]

open access: yesJournal of Foot and Ankle Surgery (Asia Pacific)
Introduction: Distal tibial metadiaphyseal fractures are challenging fractures that need multiple principles of fixation for optimal stability. Conventionally, when the distal locking screw hole of tibia interlock nail coincides with the fracture site ...
Sunil G Kulkarni   +5 more
doaj   +1 more source

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