Results 61 to 70 of about 14,542 (232)

Effect of aesthetic crown lengthening on life quality and self‐esteem: 2‐year study

Clinical Advances in Periodontics, EarlyView.
Abstract Background A gummy smile can result from several factors, often leading to a disharmonious appearance and causing physical and psychological discomfort for the patient. This study aimed to evaluate changes in self‐esteem and quality of life for patients, as well as the recidivism rate, following aesthetic crown lengthening (ACL) surgery ...
Leticia S. Arroteia, Camila S. Stolf, Hélvis E. S. Paz, Thais F. M. Paschoal, Mabelle F. Monteiro, Márcio Z. Casati, Mauro P. Santamaria, Renato C. V. Casarin   +7 more
wiley   +1 more source

Gear surfaces three-dimensional slope deviation evaluation method

Advances in Mechanical Engineering
Addressing the limitation of traditional gear slope deviation evaluation methods confined to two-dimensional (2D) characteristic line analysis, this paper proposes a new three-dimensional (3D) slope deviation evaluation index based on the normal vectors ...
Da Cao, Huiming Cheng, Zhaoyao Shi, Sinuo Guo, Bo Yu   +4 more
doaj   +1 more source

Perigraftitis, an independent biologic complication associated with implants placed in grafted bone

Clinical Advances in Periodontics, EarlyView.
Abstract Background Perigraftitis is a recently introduced concept describing biologic complications specifically associated with implants placed in grafted bone. It is characterized by inflammation resulting from bacterial colonization of grafted bone and/or residual graft particulates.
Jonathan H. Do, Charles M. Cobb, John T. Shen   +2 more
wiley   +1 more source

Precise Measurement of Worm and Worm Gear based on Laser Displacement Sensor

Jixie chuandong, 2019
On the basis of analyzing the characteristics of the current measuring technology of worm wheel and worm， a non-contact measurement based on laser displacement sensor and corresponding calculation method of tooth profile and pitch deviation were put ...
Hao Zi, Yun Peng, Yuegang Chu, Yuhan Shen, Aiping Song   +4 more
doaj  

Tooth Surface Deviation Analysis for Continuous Generation Grinding of Internal Gears

Applied Sciences
In order to resolve the issues of low efficiency and poor precision in the traditional finishing process of hardened internal gears, a method is proposed for calculating the profile curves of a drum-shaped grinding tool suitable for mass finishing of ...
Jianjun Yang, Zhaolong Zhang, Shuai Wang, Jialu Wu   +3 more
doaj   +1 more source

Modified Neumann incision for implant placement in overdentures: Case series of a less invasive alternative

Clinical Advances in Periodontics, EarlyView.
Abstract Background Conventional envelope flap techniques for implant placement in edentulous mandibles are associated with greater postoperative morbidity, especially in elderly patients or those with anatomical limitations. Minimally invasive alternatives aim to preserve soft tissues and reduce complications, enhancing clinical predictability ...
Lucas Jardim da Silva, Laura Lourenço Morel, Luciana de Rezende Pinto, Otacílio Luiz Chagas‐Júnior, Jamil Awad Shibli, Fernanda Faot   +5 more
wiley   +1 more source

Compensation of the Radial Error of Measuring Head based on Forming Grinding Machine

Jixie chuandong, 2017
In order to improve the accuracy of tooth profile deviation in machine,a method which can get the radial error based on the actual working condition is proposed.
Wang Zhonghou, Cao Huan, Li Gang, Liu Xingrong   +3 more
doaj  

Five‐year tomographic and clinical evaluation of the socket shield technique: Case report

Clinical Advances in Periodontics, EarlyView.
Abstract Background The socket shield technique, one modality of partial extraction therapy, aims to preserve periodontal tissues and maintain the buccal alveolar bone volume following immediate implant placement or in prosthetic pontic sites, by the strategic maintenance of a tooth root fragment.
Renan Dalla, Khalila C. Cotrim, Rafael A. Siqueira, Eduardo C. Kalil   +3 more
wiley   +1 more source

标准渐开线齿廓热变形的变化特性研究

Jixie chuandong, 2013
According to the problem that design tooth profile be destroyed owing to the thermal deformation of cylindrical gear,based on the heat transfer theory,a theoretical model of the relation between various tooth profile deviations and temperature rise is ...
陈允睿, 赵军, 孔明
doaj  

Research on hobbing accuracy of flexspline tooth profile of harmonic drive

Journal of Advanced Mechanical Design, Systems, and Manufacturing
Harmonic drives are critical components in robotic joints, and the hobbing accuracy of flexspline tooth profiles is essential for the transmission accuracy and operational stability of harmonic drives.
Qiushi HU, Heng LI
doaj   +1 more source