Treatment of Necrotic Calcified Tooth Using Intentional Replantation Procedure by Nima Moradi Majd, Armita Arvin, Alireza Darvish, Sareh Aflaki, Hamed Homayouni

“…In such cases that conventional endodontic treatment is impossible or impractical, intentional replantation may be considered as a last solution to preserve the tooth. Methods. After failing to perform conventional root canal therapy for a necrotic calcified right mandibular second premolar, the tooth was gently extracted. …”
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Tooth Profile Design of Tri-arc Harmonic Gear Drive by Xiao Jichang, He Xiaofei, Yang Yong, Wang Jiaxu, Huang Yanyan, Zhou Qinghua

“…Based on the exact conjugate method of harmonic gear drive， the tooth profile design method of the tri-arc harmonic gear drive is proposed and the influence of flex spline profile parameters on the conjugate interval are studied. …”
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Research on Spatial Deformation of Flexspline with Variable Thickness Tooth Ring by Yuqi Wang, Xiaoxia Chen, Jingzhong Xing, Yunpeng Yao

Subjects: “…Variable thickness tooth ring…”
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Study on the Dynamics Characteristic of Helical Gear with Tooth Profile Deviation by Zhang Yanjie, Wu Xuncheng, Zhang Juecheng

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Thread Tooth Modification of the Inverted Planetary Roller Screw Mechanism by Qiao Guan, Hao Zhipeng, Liao Rong, Zhang Nan, Liu Geng

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Modification Method of Cycloid Tooth Profile based on Pressure Angle by Lang Yue, Weidong He, Yinghui Zhang

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Retrospective Evaluation of Sedation Techniques for Tooth Extraction in Paediatric Patients by Mridul Sharma, Amit K. Sahu, Puja Kaila, Ali Abdel H. A. A. Hassan, Mohamed Mansy, Raksha Thakur, Husham E. Homeida

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Design Method of Tooth Profile based on Transmission Error Feedback by Zhang Liming, Wang Zhonghou

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Prevalence of Reasons for Tooth Extraction in Small- and Medium-Breed Dogs by Chun-Geun Kim, Daehyun Kwon, Kyuyoung Lee, Se Eun Kim, Hyun Min Jo

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Study on the Design and Modification Method of the Cycloid Gear Tooth Profile by Wei Bangjie, Liu Tao, Li Ruqiong

“…A new tooth profile curve equation of the cycloid gear is proposed based on the gear meshing transmission principle. …”
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Theoretical Analysis and Quick Calculation of Spur Gear Tooth Deformation by Zhang Jingcai, Liu Hongqi, Zhao Xiangfei, Yang Chao

“…A modified gear tooth basic deformation Weber- Banaschck formula is proposed. …”
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Method of Cycloid Gear Tooth Profile Modification of RV Reducer by Zhang Fengshou, Yang Xingxing, Liu Jianting, Li Pengfei

“…Firstly,based on the precision measurement of the cycloid gear of the RV-40 E reducer with the three-coordinate measuring instrument,the equation of cycloid gear profile is derived by using the method of least square to fit the parameters of the measured cycloid gear tooth profile. And then,by using the optimization function in Matlab,taking the obtained equation curve as the target tooth profile to optimize the cycloid gear profile formed by the three kinds of modification methods that are the combination methods of "eccentricity + isometric + shift","isometric + shift"and "isometric + shift + rotation". …”
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Study on the Interchangeability Condition of the Tooth Matching Method of RV Reducer by Gao Wenming, Gong Linhuan

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Tooth Profile Optimization Design of Cup Flexspline Harmonic Drive by Sun Yuqin

“…For the purpose of improving the engagement qualities of harmonic drive（ HD）,taking the HD with the drive ratio 100 as example,the basic conjugated tooth profile for involute tooth profile is calculated based on the modified kinematics method of HD and the elastic deformation of flexspline,the tooth profile optimization design model is established and calculated by using the iteration method of MATLAB,in order to verify the correctness of the aforementioned model,the engagement state of the tooth profile after optimized is studied.The results show that effective conjugate exist domain and effective conjugate tooth profile are found,in order to avoid the interference during the engagement process,the three-dimensional tooth profile must be applied as the conjugate tooth profile.Finally,the correctness of all of the aforementioned model are verified by the characteristics,such as non-interference during the assembly and movement process,more number of teeth participated in engagement and large transmission ratio.…”
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SIMULATION AND ANALYSIS OF TOOTH ENGAGEMENT PRESSURE OF SYNCHRONOUS BELT (MT) by FU JianNan, LI GuoFu, YE CunHao

“…To solve this problem, propose a matrix model to calculate the tangential pressure of the meshing part between tooth and pulley. In the matrix model, use spring to replace the contact between synchronous belt and pulley, synchronous belt was discretized and separated into independent parts. …”
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Research of Nonlinear Dynamic Characteristic of the Roller Movable Tooth Drive by Wang Zhigang, Pu Yunguo

Subjects: “…Roller movable tooth…”
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Research of the Shifting Characteristic of Planetary Transmission with using Tooth Brake by Li Yaxi, Ma Biao, Li Heyan, Zhu Li’an

Subjects: “…Tooth brake…”
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Research Progress of Tooth Surface Friction Force Gear Transmission by Xuefei Li, Jiqiang Li, Zhuo Chen, Zhiyuan Li, Lubing Shi, Zhongming Liu

“…Tooth surface friction has an important impact on the scoring，macro and micro pitting corrosion and transmission efficiency of meshing gear pairs. …”
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Design and Performance Analysis of New Tooth Profile of Harmonic Drive by Yu Jinbao, Fan Yuanxun

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Analysis of Tooth Deflection of Flexspline and Its Influence on Harmonic Drive by Liang Yong, Fan Yuanxun

“…The meshing interference caused by tooth deflection occurs earlier in the non working side of the tooth. …”
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