Regenerative Endodontic Treatment in Dentinogenesis Imperfecta-Induced Apical Periodontitis by Ying Liao, Ting Pan, Xianghui Xing

“…RET was planned and carried out for the necrotic tooth (tooth 31) with dentinogenesis imperfecta. …”
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Study on the Root Crack Propagation Characteristics and Residual Life of Case-hardened Gears by Wu Luji, Yang Shihao, Yang Linjie, Li Youhua

“…In order to study the influence of tooth root cracks on the fatigue life of case-hardened gears, taking an involute case-hardened gear as the research object, the mechanism of the tooth root fatigue crack growth is analyzed based on the fracture mechanics method and fatigue crack growth theory. …”
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Active Design of Contact Pattern and Experimental Verification of the Aero Spiral Bevel Gear by Qian Lulu, Liu Hai'ou, Gao Jian, Lou Peng

“…An active design method for the bevel gear contact pattern is proposed. Firstly, the tooth surface design is carried out based on the macro parameters of spiral bevel gears and GEMS software, and then the accurate tooth surface of the gear pair is obtained. …”
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Two-parameter Envelope Calculation for the Profile of Worm Grinding Wheel and Dressing Method by Shuai Wang, Bin Li, Jianjun Yang, Laigui Lei, Jinwei Zhao, Jianxin Su

“…A mathematical model for tooth profile curve of cylinder gear with high-order modification gear surface is established. …”
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RESEARCH ON STRESS AND STRENGTH OF WO-STAGE CYCLOID BALL PLANETARY TRANSMISSION by ZHANG XiaoMei, AN ZiJun, XUE Jin

“…The contact stress of hypocycloid and epicycloid tooth surface was deduced with Hertz theory. Their stress change curves were drawn with different tooth number. …”
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Research of the Three-dimensional Model of Point-line Meshing Gear based on SolidWorks by Yang Fan, Luo Qihan, Huang Hai, Teng Fei

“…Based on the type of DZLY180 gear reducer,aiming at the particularity of the tooth profile of point- line meshing gear,the curve equation of the tooth profile of point- line meshing gear is applied to calculate some coordinates on the tooth profile curve after modification. …”
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Influence of Double Parameter Modification on Transmutation Point Location of Planar Double- enveloping Worm Pair by Zhang Yuemin, Yin Xinbin, Wang Yuqing

“…The transmutation point location is achieved according to the enveloping worm pair mesh equation. The tooth parameter equations of enveloping worm pair transmutation point is established and the relationship between transmutation point and worm gear tooth surface when the transmission ratio and center distance changing separately and at the same time are respectively discussed. …”
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Modeling and Finite Element Analysis of Hypoid Gear Cutting by Completed Method by Lin Xi

“…The pinion tooth surface equation can be derived based on the coordinates transformation and spatial meshing theory. …”
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Outer Surface Elongation of Flexspline and Its Influence on Harmonic Drive Meshing by Liu Mengfei, Du Qungui

“…The accurate calculation of the backlash of harmonic reducers is crucial for the study of transmission performance, load capacity calculation, and tooth profile design of harmonic reducers. The current research is based on the neutral line no-elongation theory, calculating the assembly of flexible gear tooth profile. …”
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ANALYSIS ON STRENGTH FOR THE MILL PRESSURE SCREW PAIRS BASED ON THERMAL-STRUCTURAL COUPLING by LIU YongFeng, ZHAO ChunJiang, ZHOU Yan, GAO Xin

“…Comparison of equivalent stress of screw tooth and contact pressure of screw tooth surface under different temperature. …”
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Discretization Envelope Design Modeling Method of Rack and Pinion with Variable Ratio by Dai Yin

“…The data points in the envelope point cloud are very dense, and at the same height, the distance between the adjacent tooth profile points is far greater than that between the non-tooth profile points. …”
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Theoretical Study on Meshing Stiffness of Cycloid-pin Gear Drive based on Energy Method by Yang Yun, Li Chaoyang, Li Xuan

“…With calculating the torsion deformation of cycloid gear under load condition,the calculation formula of mesh stiffness and torsional stiffness of single tooth pair at the contact point are given. Based on the proposed calculation model,the influence of tooth profile parameters on the meshing stiffness and torsional stiffness are analyzed,including the eccentricity,pin position radius,pin radius and tooth number. …”
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Comparative Analysis of Meshing Characteristics Between Point-line Meshing Gears and Involute Gears by Tang Yu, Chang Shan, Yang Long, Wang Zhiqiang

“…Taking point-line meshing gears and involute gears as the research object, a simulation model of two kinds of meshing gears is established, the meshing characteristics of point-line meshing gears and involute gears in transmission error, tooth surface load distribution, tooth surface sliding speed distribution, tooth surface contact stress distribution, tooth root bending stress distribution, meshing contact trace analysis are comprehensively compared and analyzed. …”
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Study on Gear Fault Diagnosis Technology based on the Method of Transmission Error by Wang Lei, Cui Yanping, Wang Yangang, Yang Yalei

“…In view of the problem of the difficulty in precise diagnosis of tooth surface fault of gear transmission system under the complicated working conduction,a fault diagnosis method based on transmission error in gear transmission system is proposed.Different gear tooth faults would make the instantaneous transmission ratio change,which affects the transmission errors of the system.The gear fault diagnosis method based on transmission error can diagnose two types of gear tooth failure including convex and concave fault through the measurement and analysis of gear transmission error signal.The experimental results show that the method is sensitive to gear tooth fault and can effectively diagnose the presence of gear faults with convex and concave in gear transmission system.…”
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Development of Machine Setting Calculation and Meshing Simulation Software for Oerlikon Cycloid Bevel Gear by Nie Shaowu, Deng Xiaozhong, Zhang Hua, Wei Bingyang, Li Jubo

“…The software system not only includes geometry parameter calculation,cutter head parameter calculation and machine setting parameter calculation,but also can complete tooth surface numerical simulation,tooth mismatch analysis and tooth contact analysis. …”
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Exploring the Influence of Different Lubricant Viscosity on the Fatigue Life of Gear by Xue Yunwei, Wang Tie, Wang Daoyong

“…The influence of different viscosity lubricant on the wear resistance of the tooth surface is studied by using oil analysis and monitoring technology. …”
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Treatment of a Vertical Root Fracture Using Dual-Curing Resin Cement: A Case Report by Nima Moradi Majd, Farshid Akhtari, Solmaz Araghi, Hamed Homayouni

“…The prognosis of the root with VRF is poor therefore tooth extraction and root amputation are usually the only treatment options. …”
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Teeth macroabrasion for determination of dental age and diet in the Illyrian population from the Kopila necropolis on the Island of Korčula, Croatia by Marina Marić, Dinko Radić, Jelena Dumančić, Marin Vodanović, Minja Birimiša, Davorka Radovčić, Hrvoje Brkić

“…There was no difference in the degree of tooth wear of the teeth of the mandible and maxilla (t = –0.266, p = 0.791), nor in the degree of tooth wear of the teeth of the maxilla right and left (t = –0.392, p = 0.702) or in the degree of tooth wear of the teeth of the mandible right and left (t = –0.889, p = 0.390). …”
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Examining the Abrasion Behaviour of PA 66 Gears in Different Cycles by Rifat Yakut, Hayrettin Düzcükoglu

“…The load capacity damage formation of the material was also analysed. The tooth surface temperature, corrosion depth of the tooth profile, tooth damage, and the tooth surface were examined with an scanning electron microscopy (SEM) and the corrosive behaviour of gears was analysed.…”
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Unilateral Gemination of the Upper First Permanent Molar: A Rare Case Report by Ameera Kamal Khaleel, Ali Sultan AlRifai, Ramizu Bin Shaari, Mohamad Arif Awang Nawi

“…Gemination or a double tooth is a rare condition experienced in dental clinics, in which usually the tooth shows one root and two intertwined crowns. …”
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