Results 11 to 20 of about 13,135 (216)

Timing selection for loosened tooth fixation based on degree of alveolar bone resorption: a finite element analysis

open access: yesBMC Oral Health, 2022
Objective This study aimed to evaluate timing of fixation to retard bone absorption using finite element analysis(FEA). Methods Volunteer CT images were used to construct four models of mandibles with varying degrees of alveolar bone resorption.
Zhang-yan Ye   +5 more
doaj   +1 more source

Stress analysis of simulated maxillary first molar prepared with three rotary nickel ⁃ titanium instruments

open access: yes口腔疾病防治, 2018
Objective To compare the differences in the stress distribution in simulated first molars prepared with three rotary nickel⁃titanium instruments. Methods Four simulated first molars were prepared without instruments and with Reciproc, WaveOne and ...
YUAN Li   +5 more
doaj   +1 more source

Finite element study on the stress of hole sealing resin in screw approach of dental implant [PDF]

open access: yesKouqiang yixue
Objective To compare the stress difference of the resin with different thicknesses in the screw access hole using three-dimensional finite element method. Methods A three-dimensional finite element model of the implant at the site of the mandibular first
LI Feifan, WU Meiqi, BI Mengfei, SHEN Ming
doaj   +1 more source

Influence of sagittal root positions on the stress distribution around custom-made root-analogue implants: a three-dimensional finite element analysis

open access: yesBMC Oral Health, 2021
Background Stress concentration may cause bone resorption even lead to the failure of implantation. This study was designed to investigate whether a certain sagittal root position could cause stress concentration around maxillary anterior custom-made ...
Chunping Lin   +5 more
doaj   +1 more source

Stress Characteristics near Wellbore and Prevention Casing Deformation for Fracturing Horizontal Wells

open access: yesGeofluids, 2022
Aiming at the problem that casing deformation can easily occur in tight oil horizontal well fracturing, based on the rock mechanics experiments and probability statistics, the distribution characteristics and law of the near-wellbore stress field of the ...
Peng Zhang   +7 more
doaj   +1 more source

On the Eccentrically Loaded Socket Footings With Cut - Off Pyramid Shaped Socket

open access: yesCivil and Environmental Engineering, 2019
In this work considerations concerning eccentrically loaded socket footing with cut-off pyramid shaped socket were presented. As an object of study sloped footing with 1.40 m height, corresponding to the maximum frost depth has been adopted. Knowing that
Major Maciej   +3 more
doaj   +1 more source

Thermal-mechanical coupling analysis and optimization of mine hoist brake disc

open access: yesAdvances in Mechanical Engineering, 2022
Based on heat conduction theory and energy conversion, the theoretical model of brake disc temperature field was established. The temperature field and equivalent Von Mises stress field distribution of brake disc during braking were investigated by using
Chuanli Wang   +5 more
doaj   +1 more source

Treatment of unstable thoracolumbar fractures through short segment pedicle screw fixation techniques using pedicle fixation at the level of the fracture: a finite element analysis. [PDF]

open access: yesPLoS ONE, 2014
OBJECTIVE: To compare the von Mises stresses of the internal fixation devices among different short segment pedicle screw fixation techniques to treat thoracic 12 vertebral fractures, especially the mono-segment pedicle screw fixation and intermediate ...
Changqing Li   +4 more
doaj   +1 more source

Structural Design and Sealing Performance Analysis of Biomimetic Sealing Ring

open access: yesApplied Bionics and Biomechanics, 2015
In order to reduce the failure probability of rubber sealing rings in reciprocating dynamic seal, a new structure of sealing ring based on bionics was designed.
Chuanjun Han, Han Zhang, Jie Zhang
doaj   +1 more source

Additively Manufactured Foot Insoles Using Body-Centered Cubic (BCC) and Triply Periodic Minimal Surface (TPMS) Cellular Structures

open access: yesApplied Sciences, 2023
This study presents the development of insoles using 3D scanning and additive manufacturing; additionally, the feasibility of implementing cellular structures in their design was evaluated.
Genaro Rico-Baeza   +4 more
doaj   +1 more source

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