Results 101 to 110 of about 1,721,695 (243)

Several Questions about Gear Single Tooth Pulsating Bending Fatigue Test

open access: yesJixie chuandong, 2017
The methods of the tooth root bending fatigue test both at home and abroad are introduced,and several questions about single tooth pulsating test are explained and discussed,such as ensure the load distribution along tooth length direction,clamped tooth ...
Liu Ziqiang, Chen Liang, Wan Wenming
doaj  

Evaluation of root development of mandibular first molar of children (6-12) years old visiting P.O.P. department College of Dentistry/ Hawler Medical University.

open access: yesErbil Dental Journal, 2023
Background and objective: With FPMs between the ages of 6 and 12, the detection of open apex in some children at age 12 underlines the necessity for investigation prior to treating a deep carious lesion.Pulpal involvement was considered before the ...
Yara Ismail Ameen   +2 more
doaj  

Modification of Differential Gear based on Multi-objective Optimization

open access: yesJixie chuandong, 2020
In order to reduce vibration and noise, the modification of the tooth profile of the planetary gear and the eccentric helix are studied. The influence of tooth profile modification,helix modification, helix modification factorⅠand helix modification ...
Qiqi Feng   +5 more
doaj  

Treatment Rate Of Second Mesio-Buccal Canals In Maxillary Molars In A Musod Endodontic Resident Patient Population [PDF]

open access: yes, 2013
Purpose: The primary reason for non-surgical root canal treatment (NSRCT) failure in an upper molar is inadequate cleaning, shaping and filling of the second mesio-buccal root canal (MB2). Failure to locate and treat a present MB2 will lead to a worsened
Margel, Ryan Yale
core   +1 more source

Management of Different Types of Root Resorption Affecting Traumatised Permanent Maxillary Incisors—A Case Report

open access: yesCase Reports in Dentistry
Managing defects caused by pathological root resorption in permanent teeth can be challenging. If not diagnosed and treated efficiently, progressive root resorption can result in the loss of a tooth.
Manisha Deepanjan   +3 more
doaj   +1 more source

Synergistic Functions Of Gli2 And Gli3 In Tooth Root Morphogenesis.

open access: yesInternational Dental Journal
Aim or purpose: Hedgehog signaling pathway has been implicated as a pivotal transduction center in orchestrating tooth morphogenesis. Gli2 and Gli3, downstream transcriptional factors of Hedgehog signaling, exhibit synergistic functions in directing ...
Tao Zhou, Junjun Jing, Xianglong Han
doaj   +1 more source

A Summary of the Research on the Effect of Gear Tooth Root Strengthening on Bending Fatigue Strength based on Residual Stress

open access: yesJixie chuandong, 2019
With the continuous development of engineering technology, bending fatiguestrength has become an important limiting factor for the further development of gears, and bending fatigue failure is more dangerous than tooth surface failure.
Wang Zhen   +4 more
doaj  

Periodontitis and the Elderly: An Overview of the Disease and its Impact on an Aging Population [PDF]

open access: yes, 2019
Periodontitis affects millions of Americans each year, and is especially prevalent among the elderly. Since periodontitis is a chronic, progressive condition, uninterrupted disease progression leads to irreversible oral damage; therefore, periodontitis ...
Weissenfluh, Nicole Grace
core   +1 more source

THE DETERMINNATION OF RESIDUAL STRESS OF GEAR TOOTH ROOT BASED ON X-RAY TECHNOLOGY

open access: yesJixie qiangdu, 2017
Transverse residual stress of tooth root has significant influence on bending fatigue strength of gears.But given the geometry of gears,using the method of exposing teeth root to complete determination of transverse residual stress at present,it not only
WANG Zhen   +3 more
doaj  

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