Long-Term Outcome of Autotransplantation of a Complete Root Formed a Mandibular Third Molar by Hiroyuki Kimura, Yusuke Hamada, Taro Eida, Tsuyoshi Kumano, Kazutoshi Okamura, Makoto Yokota

“…Autogenous tooth transplantation is a procedure to reposition an autogenous tooth to another extraction area or surgically created recipient site. …”
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Study on the Time-varying Mesh Stiffness of Speed-increasing Gear Pair with Non-uniform Wear by He Zeyin, Tang Weiyi, Lin Tengjiao, Sun Shizheng

“…And the tooth surface wear depth under different cycles is calculated. …”
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Parameter limit and finite element analysis of unequal modulus involute gear pair by JIN ChengKe, HUANG JiaXin, ZHU ChenZe, SUN XiaoXiao, YIN Yue

“…In order to solve the limitation of center distance adjustment and strength distribution of conventional gear, a structure with the same base pitch but different modulus was proposed to greatly improve the strength of small gears in gear transmission, especially the strength of the tooth root. But used in the engineering practice in modulus differ with tooth profile angle are smaller, the formation principle of involute gear tooth surface and the gear meshing analysis of some parameters, got this kind of gear modulus, tooth number, tooth shape parameters such as coefficient of angle, depth of constraints, and through the formula deduction coefficient of the teeth, the tooth depth and the relation between the dividing circle pressure angle limit value. …”
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Contact Performance Numerical Simulation and Analysis of Gear Skiving by Chen Yongpeng, Xiao Lei

“…However, due to the presence of feed marks on the forming tooth surface, the contact performance of the tooth surface is not clear. …”
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Correlation Between Involute Profile Waviness and Gear Transmission Performance by Zhou Yuansheng, Yue Huijun, Wu Xiangkai, Shi Zhaoyao

“…Involute tooth profile contains a lot of waviness information. …”
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CUT PICK CUT LINE DISTRIBUTION AND THE FINDINGS OF A STUDY OF LOAD SPECTRUM by HAO ZhiYong, ZHANG Pei, SONG ZhenDuo

“…According to studying Angle cutting conditions of shearer drum cutting teeth distribution on the influence law of load spectrum,which provides reference for the design of the cutter tooth,in which equivalent test tooth holder to roll the same spiral blades cut line cut tooth load the real-time online monitoring,synchronous export analysis after storage.Experimental results show that the system is reliable,stable performance,can real-time dynamic testing of cutter tooth cutting force changes,through different cut line cut tooth time-cutting force change curves available:cutting force curve variation rule has the similarity,oblique cutting coal and rock,drum cutting tooth load whole curve peaks and troughs alternating form,cutting teeth with different cutting depth change of cutting force changing process;Same cutting resistance of greater than its feeding resistance,but its fluctuations are similar,have many irregular fluctuations;Single pick on the cutting resistance and traction resistance of instantaneous value obey the symmetry good Gamma distribution,the distribution parameters with pick in the cutting line spacing end plate distance relationship is a Fourier series,for the research on the rules of cutter tooth load spectrum provides a new method.…”
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The Use of Newer High Translucency Zirconia in Aesthetic Zone by Zishan Dangra, Mahesh Gandhewar

“…Loss of anterior tooth causes aesthetic and functional disharmony. …”
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Study on Allocation Method of Root Bending Stress based on Gear Tangential Modification by Cao Yaguang, Zhao Xiangfei, Li Xiuming

“…Gear is an important part for mechanical transmission.For the case of bending fatigue fracture of pinion during the transmission,the gear tooth thickness is reassigned by tangential modification.The center distance and transmission ratio unchanged,the pinion root bending stress is reduced and the root bending stress of pinion is increased by the tooth thickness reallocation,leading to bending fatigue life of each gear approximately equal.The finite element modeling of gear is carried out by using APDL language,and the bending stress analysis is carried out at a single tooth top loading and meshing gear.Compared to ordinary gear,the results validate that the gear tooth thickness reassigned by tangential modification is accuracy,and it has guidance instructive to solve tooth broke problem of pinion in engineering.…”
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Research of Quality Control of Contact Zone After Heat Treatment of Hypoid Gear by Mo Yimin, Hu Qiqi, Liu Jie, Yang Junjian, Dong Jixing, Liang Yaohang

“…A method to analyze the contact zone offset by using the first-order relative tooth surface error of the main tooth is proposed. …”
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Development of Portable Gear Laser Measuring Devices by Qiu Zhou, Song Aiping, Pan Jianzhou, Huang Jiaming

“…Based on the linear laser displacement sensor, this research constructs a device which can measure the multiple deviations online of large gears. In this device, the tooth profile of the gear can be scanned by the linear laser displacement sensor, and the data of any tooth surface of the gear can be measured. …”
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Research on Calculation Method of Meshing Stiffness of Straight Bevel Gear by Siyu Chen, Rulong Tan, Xiaodong Guo

“…Aiming at the calculation problem of straight bevel gear meshing stiffness， to convert the tooth to tooth width of midpoint equivalent straight tooth cylindrical gear， then the equivalent of the gear tooth is simplified to the cantilever beam on the dedendum circle， through the energy method， the single tooth meshing stiffness is calculated the analyzed. …”
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Geometric Condition of Planar Engagement and Stress Analysis of Cup Bottom of Bell Shaped Harmonic Gear by Xing Jingzhong, Pang Manyi, Chen Xiaoxia, Yao Yunpeng

“…In order to realize planar deformation of the tooth ring in radial direction which leads to planar line contact engagement between tooth profiles， according to the geometric equation of the cylindrical shell theory， the connection condition between the bell shaped shell and the tooth ring is proposed. …”
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Contact Simulation and Dynamic Performance Test of Ease-off Modified High Reduction Hypoid Gears by Gu Dewan, Wei Bingyang, Ren Minghui, He Hongtu

“…Aiming at the problems of insufficient curvature of the tooth profile of the wheel of the high reduction hypoid (HRH) gear, and high twist of the tooth surface of the pinion with a large helix angle, a method of using a tool to modify the wheel to realize the point contact of the tooth surface is proposed; the pinion adopts the general hobbing method, which simplifies the machining parameters of the machine tool. …”
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Successful Non-Surgical Root Canal Treatment on Auto-Transplanted Maxillary Premolar with Apical Periodontitis by Christopher M. Naglieri, Ellie Bash, Glen A. Karunanayake, Carlos H. R. Camargo, Takashi Komabayashi

“…After 6 weeks, the patient was referred to the endodontic resident for evaluation of tooth #20 due to symptom development. While one auto-transplanted tooth (donor tooth #4, recipient site #29) was successfully integrated, the other (donor tooth #13, recipient site #20) was unsuccessful: the patient was diagnosed with pulp necrosis and a chronic apical abscess. …”
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IMPROVEMENT ALGORITHM OF TIME-VARYING MESHING STIFFNESS OF HELICAL GEAR AND ANALYSIS OF INFLUENCING FACTORS by WU LuJi, YANG ShiHao, FENG Wei, YANG LinJie

“…An improved calculation method for the time-varying mesh stiffness of helical gear was proposed based on the potential energy method and the slice integration principle, taking into account the transition curve equation of tooth root. This method considered the parameter equation of the transition curve of the real tooth root, corrected the integral interval of the involute tooth profile, and compared with the finite element method to verify the validity of the algorithm and reduce the calculation error of the time-varying mesh stiffness. …”
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Research and Practice of Surveying and Mapping for Failed Large Modulus Cylindrical Gear by Ben Daochun

“…From tooth profile wear and the demand of match manufacturing,a set of field mapping method is proposed,which does not depend drawings,while by virtue of toothed parameter with accumulated manufacturing experience that included addendum circle,tooth root circle,helix angle,variable coefficient measuring,modulus and pressure angle determining. …”
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Analysis of the Influence of Eccentricity Error of Gear Skiving Cutting Tool Movement on Gear Skiving Accuracy by Guo Wenchao, Yang Yu, Mao Shimin, Guo Zheng

“…Finally，based on the experiments and theoretical study，the design method of number of tooth of skiving cutting tool，which can be used to improve the gear skiving waves on the tooth surface of the workpieces is proposed.…”
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Epidemiology of Supernumerary Teeth in 5000 Radiography Films: Investigation of Patients Referring to the Clinics of Ardabil in 2015–2020 by Emran Hajmohammadi, Samira Najirad, Hesam Mikaeili, Aziz Kamran

“…Background. Supernumerary tooth is defined as any extra tooth or odontogenic structure that is formed on normal dentition. …”
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Analysis and Research of Asymmetric Helical Gear Oil Injection Lubrication Considering Convective Heat Transfer Coefficient by Shuai Mo, Xu Li, Zhenxing Zou, Zhiyou Feng, Guojian Cen

“…It shows that the average convective heat transfer coefficient of the tooth surface is less and less affected by the viscosity of the lubricating oil. …”
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Research on Constriction Resistance of Drum Gear Coupling of High Speed EMU by Chunjun Chen, Xiang Zheng, Lu Yang, Linchun Zhou

“…In order to research the constriction resistance of the drum gear coupling of high speed EMU traction motor drive system，by using the geometrical analysis method，a mathematical model of the external tooth surface is established according to the structural parameters of the coupling. …”
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