Results 81 to 90 of about 90,751 (167)

Orthodontic management of severe inversely impacted maxillary central incisors: a case series

Frontiers in Oral Health
BackgroundAbnormal positioning and dislocation of the central incisor can disturb tooth eruption. Generally, inversely impacted maxillary central incisors do not erupt naturally.
Yuriko Maruya, Ryoko Hino, Manami Tadano, Seira Hoshikawa, Shinji Otake, Yuta Chiba, Kan Saito   +6 more
doaj   +1 more source

Biomimetics Design of Tooth Root Zone at Cylindrical Gears Profile. [PDF]

Biomimetics (Basel), 2023
Atanasovska I, Momcilovic D, Lazovic T, Marinkovic A, Soldat N.   +4 more
europepmc   +1 more source

Aligner-induced tooth movements in three dimensions using clinical data of two patients [PDF]

arXiv
The effectiveness of a series of optically transparent aligners for orthodontic treatments depends on the anchoring of each tooth. In contrast with roots, the crowns' positions and orientations are measurable with intraoral scans, thus avoiding any X-ray dose.
arxiv  

Calculation of Tooth Root Bending Fatigue Life with Considering the Influence of Roughness Parameter R_a

Jixie chuandong, 2018
The stress concentration effect of surface topography plays an important role in the fatigue properties of gears. The quantitative analysis method of the effect of surface topography on gear fatigue performance is the basic work of an in-depth study of ...
He Di, Tang Jinyuan, Li Guowen, Zhou Wei
doaj  

The Role of Bone and Root Resorption on the Biomechanical Behavior of Mandibular Anterior Teeth Subjected to Orthodontic Forces: A Finite Element Approach

Biomedicines
Aims: This study was conducted to systematically evaluate the biomechanical impact of varying degrees of root and bone resorption resulting from periodontitis and orthodontic tooth movement (OTM) on the mandibular anterior teeth.
Jana Flatten, Thomasz Gedrange, Christoph Bourauel, Ludger Keilig, Anna Konermann   +4 more
doaj   +1 more source

Damage Degree Detection of Cracks in a Locomotive Gear Transmission System

Shock and Vibration, 2018
The gear transmission system is a vital component of the locomotive bogie. During locomotive operation, the damage to the gear transmission system spreads rapidly and affects the locomotive’s operational safety.
XinChang Liu, Qi Sun, ChunJun Chen
doaj   +1 more source

ViSTooth: A Visualization Framework for Tooth Segmentation on Panoramic Radiograph [PDF]

arXiv
Tooth segmentation is a key step for computer aided diagnosis of dental diseases. Numerous machine learning models have been employed for tooth segmentation on dental panoramic radiograph. However, it is a difficult task to achieve accurate tooth segmentation due to complex tooth shapes, diverse tooth categories and incomplete sample set for machine ...
arxiv  

基于应力释放提高齿轮弯曲强度方法的研究

Jixie chuandong, 2014
Stress concentration of the gear tooth root fillet is an important factor to affect the bending fatigue strength of the gear.In order to improve the bending fatigue strength,the stress relief hole in the tooth surface is established to make root stress ...
赵向飞, 雷前召
doaj  

Incidence and Management of Tooth Root Fracture in Mandibular Fracture Line - A Retrospective Study. [PDF]

Ann Maxillofac Surg, 2023
Sahoo NK, Dubey P, Vaswani H, Pandey S.
europepmc   +1 more source

An Evaluation Method of Dental Treatment Quality Combined with Deep Learning and Multi-index Decomposition

Applied Artificial Intelligence
Dentists judge that the quality of dental treatment for each patient is very time-consuming and inefficient, lacks quantitative evaluation criteria, and is easy to cause errors.
Gang Peng, Jie Liu, Feng Yan, Beicun Liu
doaj   +1 more source