Results 21 to 30 of about 90,751 (167)
Dental Hypotheses, 2014 Introduction: Trauma, altered tooth germ position and delayed tooth eruption have been hypothesized as possible causes of tooth root dilacerations and flexion, however these anatomical variations appear more commonly associated with posterior teeth and ...
Richard G Standerwick
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Tooth Eruption without Roots [PDF]
Journal of Dental Research, 2013 Root development and tooth eruption are very important topics in dentistry. However, they remain among the less-studied and -understood subjects. Root development accompanies rapid tooth eruption, but roots are required for the movement of teeth into the oral cavity.
openaire +3 more sources
Gear tooth rooth stress and fillet radii dependence [PDF]
FME Transactions, 2014 Tooth root form and fillet radius have a great influence on gear tooth root strength that is one of the primary subjects of this paper. Special attention is given to analysis on impact of gear tooth fillet radius at the critical cross section on stress ...
Ristić Daniela, Kramberger Janez
doaj
ToothInpaintor: Tooth Inpainting from Partial 3D Dental Model and 2D Panoramic Image [PDF]
arXiv, 2022 In orthodontic treatment, a full tooth model consisting of both the crown and root is indispensable in making the treatment plan. However, acquiring tooth root information to obtain the full tooth model from CBCT images is sometimes restricted due to the massive radiation of CBCT scanning. Thus, reconstructing the full tooth shape from the ready-to-use
arxiv
International Journal of Implant Dentistry, 2020 Background Radiographs are integral in evaluating implant space and inter-root distance. The purpose of this report is to introduce a method for evaluating the 3D root position with minimal radiation using a 3D tooth model composed of an intraoral ...
Kyungmin Lee, Gyu-Hyoung Lee
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Potential of oil-lubricated cylindrical plastic gears
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2018 Bending strength of injection molded polyacetal test gears is investigated in back-to-back testing using oil-lubrication. To validate state of the art calculation methods, tooth geometries with a variable number of teeth are investigated, maintaining a ...
Christian HASL +4 more
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High-Resolution Segmentation of Tooth Root Fuzzy Edge Based on Polynomial Curve Fitting with Landmark Detection [PDF]
arXiv, 2021 As the most economical and routine auxiliary examination in the diagnosis of root canal treatment, oral X-ray has been widely used by stomatologists. It is still challenging to segment the tooth root with a blurry boundary for the traditional image segmentation method. To this end, we propose a model for high-resolution segmentation based on polynomial
arxiv
Jixie chuandong, 2022 Tooth root fatigue crack is one of the most common failure forms in the service process of gear transmission system， and it will threaten the safety of gear transmission systems or even the whole equipment.
Zaigang Chen, Yunsheng Zhi, Jieyu Ning
doaj
Teeth And Root Canals Segmentation Using ZXYFormer With Uncertainty Guidance And Weight Transfer [PDF]
arXiv, 2023 This study attempts to segment teeth and root-canals simultaneously from CBCT images, but there are very challenging problems in this process. First, the clinical CBCT image data is very large (e.g., 672 *688 * 688), and the use of downsampling operation will lose useful information about teeth and root canals.
arxiv
Advances in Mechanical Engineering, 2015 The research of the load distributions and bending stresses with helix deviations in power transmission systems is important for effectively improving gear load capacity. The equations of tooth surface with helix slope and form deviation were established
Tao Luo +3 more
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