Results 21 to 30 of about 553,167 (254)

Analysis of Tooth Surface Wear Characteristic of Cylindrical Gear with Variable Hyperbolic Circular-arc-tooth-trace

Jixie chuandong, 2021
Gear wear is the the main failure form， the study of wear characteristics is instructive to the active design of cylindrical gear with variable hyperbolic circular-arc-tooth-trace（VH-CATT）.
Yongqiao Wei, Zhi Lian, Yongping Liu, Rui Guo, Jianquan Zhang   +4 more
doaj  

Erosive tooth wear among preschool children in Hong Kong. [PDF]

, 2018
OBJECTIVE This study aimed to assess the prevalence of erosive tooth wear among 3- to 5-year-old children in Hong Kong and to determine the effect of socio-economic factors, dental habits, and oral hygiene on their dental erosive wear status ...
Gao, Sherry Shiqian, Chen, KJ, Chen, Kitty Jieyi, Lussi, Adrian, Lo, ECM, Chu, CH, Gao, SS, Lussi, A, Lo, Edward Chin Man, Duangthip, D, Duangthip, Duangporn, Chu, Chun Hung, Chen KJ, Lussi A, Lo ECM, Duangthip D, Chu CH, Gao SS   +17 more
core   +2 more sources

Wear and Friction Characteristics of 65Mn Steel for Spike-Tooth Harrow

, 2021
The friction and wear characteristics of spike-tooth material (65Mn steel) of Spike-Tooth Harrow in a two-stage peanut harvester were studied in this paper.
Chuanyu Du, Na Wang, Wanli Song, Tianying Niu, Zhiguo Lu, Qingcai Chen   +5 more
core   +1 more source

Diagnosis of Occlusal Tooth Wear Using 3D Imaging of Optical Coherence Tomography Ex Vivo

Sensors, 2020
The aim of this study was to assess the utility of 3D imaging of optical coherence tomography (OCT) for the diagnosis of occlusal tooth wear ex vivo. Sixty-three extracted human molars with or without visible tooth wear were collected to take digital ...
Misa Kashiwa, Yasushi Shimada, Alireza Sadr, Masahiro Yoshiyama, Yasunori Sumi, Junji Tagami   +5 more
doaj   +1 more source

A Calculation Method for Tooth Wear Depth Based on the Finite Element Method That Considers the Dynamic Mesh Force

Machines, 2022
Gear wear is a progressive material removal process that gradually changes the tooth profile shape and dynamic mesh force, where the dynamic mesh force affects the tooth surface wear.
Zao He, Yumei Hu, Xingyuan Zheng, Yuanyuan Yu   +3 more
doaj   +1 more source

TOOTH WEAR IN CHILDREN - PREVALENCE, CLINICAL FEATURES AND RISK FACTORS [PDF]

Journal of IMAB, 2021
Introduction: Pathological tooth wear in children with primary dentition can be a result of various harmful habits, risk factors and nocturnal bruxism. It is difficult to be distinguished from physiological tooth wear.
Marianna Dimitrova, Maya Rashkova, Nadezhda Mitova   +2 more
doaj   +1 more source

Theoretical Investigation of Mesh Relationship and Mesh Stiffness of Internal Spur Gears with Tooth Wear

Applied Sciences, 2023
The internal gear is part of the planetary and epicyclic gear pairs in the transmission system of the helicopter. Gear tooth wear is one of the most usual gear failures.
Yanan Wang, Keyuan Li, Baijie Qiao, Zhixian Shen, Xuefeng Chen   +4 more
doaj   +1 more source

Sequentially Functional And Asthetic Restoration Of Severe Dentin Dysplasia

International Dental Journal
Introduction: This case report introduced sequentially functional and aesthetic restoration on a patient with dentin dysplasia type II (DD-II) accompanied by severe tooth wear. Case description: An eight-year-old girl with severe tooth wear presented for
Xuemei Liu, Xu Chen
doaj   +1 more source

Non-Linear Wear Propagation Property and Prediction Method Having Influencing Pitting Failure of Helical Gears

Tribology Online, 2022
A simulation method taking into account sequential changes of the tooth contact state due to the tooth surface wear was developed in order to evaluate the influence of wear on pitting durability. As a result of calculating the tooth end relief shape as a
Koji Kumagai, Hanlin Liu, Syuhei Kurokawa   +2 more
doaj   +1 more source

Wear Behavior between Aesthetic Restorative Materials and Bovine Tooth Enamel

, 2022
Tooth enamel wear occurs because of daily mastication and occlusion. This study investigated the wear behavior of bovine teeth against aesthetic restorative materials in vitro.
Kazuyo Sen, Tomoko Someya, Shinji Takemoto, Someya, Tomoko, Tomofumi Sawada, Sasaki, Kaori, Akihiko Hatanaka, Hatanaka, Akihiko, Saito, Takahiro, Sawada, Tomofumi, Takahiro Saito, Sen, Kazuyo, Masayuki Hattori, Hattori, Masayuki, Takemoto, Shinji, Kaori Sasaki   +15 more
core   +1 more source