Supernumerary Teeth in Indian Children: A Survey of 300 Cases by Amita Sharma, Varun Pratap Singh

“…Fusion of supernumerary tooth with a regular tooth was observed in 4% of the patients. …”
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Scanning Electrochemical Microscopy as a Tool for the Characterization of Dental Erosion by Pollyana S. Castro, Alex S. Lima, Tiago L. Ferreira, Mauro Bertotti

“…When the tooth is exposed to acidic environments, an irreversible loss of dental hard tissue occurs in a process called dental erosion. …”
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Time Varying Meshing Stiffness Analysis and Experimental Study of Fatigue Pitting Helical Gear based on Finite Element Method by Jinkai Li, Yong Chen, Libin Zang, Wangyang Bi, Xiaopeng Yang

“…Through the finite element model calculation，the normal contact force and comprehensive elastic deformation of the tooth surface are obtained. According to the calculation method of meshing stiffness，the single tooth meshing stiffness and multi tooth comprehensive meshing stiffness of the gear are obtained. …”
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Dens Evaginatus and Dens Invaginatus in Dilacerated Maxillary Lateral Incisor Diagnosed Using Cone Beam Computed Tomography - A Case Report and Review of Literature by Hemant Sawhney, Vanshika Agarwal, Geetanjali Gupta

“…Introduction: Dens invaginatus (DI) and Dens evaginatus (DE), the developmental anomalies affecting the morphology of the tooth structure are extremely rare to occur. DI occurs because of invagination of a crown into dental papillae. …”
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Design of the Initiative Parameterization Accurate 3D Model of ZA Worm gear and Worm by Liu Guangwu, Hou Hongsheng, Tang Yangyang

“…The tooth surface of worm gear of ZA-type worm gear and worm transmission is spatial conjugate surface of complex worm cylindrical spiral surface,the mathematical equations describing of the worm gear tooth surface is complex,parametric accurate modeling is difficult.According to the principle of worm hob enveloping machining worm tooth surface,collaborative using the PDG,GSD,ASD,DMU SPA,DMU KIN 5functional modules and knowledge tools of CATIAV5 platform,the method of control the affine parameter family of curves to create a leading multi-section composite configuration 3Ddigital modeling used for precise parametric digital modeling of the ZA worm gear is proposed,a controllable parameter modeling processes with the negative feedback control of the contact analysis of the static and dynamic area is constructed,a foundation of accurate parametric 3Ddigital modeling for worm gear and worm transmission CAE advanced analysis is laid.…”
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Multidisciplinary Management of a Fractured Premolar: A Case Report with Followup by Madhavi R. Kondapuram Seshu, Christopher Leslie Gash

“…The general dental practitioner must consider orthodontic extrusion of a tooth when a subgingival defect, such as, crown fracture occurs before prosthetic rehabilitation, especially in the aesthetic zone. …”
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Calculation and Analysis of Spur Gear Mesh Stiffness with Considering Wear by Yang Liu, Xi Cui, Jiexin Wang

“…This method provides a theoretical basis for the dynamics modeling of gear system with tooth surface wear.…”
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Restorative Rehabilitation of a Patient with Dental Erosion by Mohammed Thamer AlShahrani, Satheesh B. Haralur, Mohammed Alqarni

“…Dental erosion is the chemical dissolution of the tooth structure. Factors like eating disorders and gastrointestinal diseases are recognized as intrinsic factors for dental erosion. …”
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Research on NC Machining Method of Face Gear in High Speed Milling by Xingzu Ming, Hongyang Wang, Jinwei Shen, Lei Jin, Rui Ming

“…And by comparing the experimental results and theoretical tooth surface， it is shown that the maximum error is 0.712 μm. …”
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Prediction of Surface Roughness of Workpiece for Internal Gearing Power Honing Process and Variation Analysis by Ren Qiang, Xia Liang, Zhang Guozheng, Zhu Yonggang, Han Jiang

“…Based on the actual machining parameters， the classical grinding theory is applied to predict the roughness of honing workpiece， to explore the variation of roughness at different tooth heights on tooth surface， and to use three-dimensional morphology. …”
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A Novel Management of Vertical Root Fracture in an Endodontically Treated Mandibular Premolar with Titanium Screw: A Case Report by Chellaswamy Savrimalai Karumaran, M. R. Srinivasan, Anil Kumar Ramachandran, Remya Venkatesan, Chandrasekaran Nirmala, P.S. Sreelakshmi

“…Result: The tooth was functional with evidence of new bone formation. …”
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Modification and Control Technology of Contact Zone of the Straight Bevel Gear by Li Yufan, Nan Boru, Gao Bin

“…The GB/T 11365-2019 provides that the tooth contact pattern of straight bevel gear is agreed by both supply and customer，and there is no direct relationship between tooth contact pattern and gear accuracy classification. …”
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Research on Fatigue Stability of Rocket Launcher High Thrust Electro-mechanical Servo Actuator by Jianxin Zhang, Wenzhu Deng, Wei Lei

“…Based on the test data curve，the influence of loss of gear tooth and two working conditions with or without grease on load，displacement，speed and temperature rise of planetary roller screw mechanism are analyzed. …”
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Analysis of Elastohydrodynamic Lubrication Performance for TI Hourglass Worm Drive with Considering Tribo-dynamics Character by Zhu Yan, Liu Zaixin, Liao Honghui, Zhang Cui

“…The calculation results show that,when at low speed,the meshing force and friction of the tooth are larger than those at high speed. With the increase of the helix angle,the meshing forces both at inlet and outlet are obviously improved,and the friction of the tooth changes a little with the speed.Meanwhile,the maximum friction reduces,which can improve the transmission life of the worm drive pair. …”
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ANALYSIS OF LOAD-BEARING MESHING CHARACTERISTICS OF CYCLOIDAL PINWHEEL OF RV REDUCER BASED ON FINITE ELEMENT MODELING (MT) by LIANG Qiang, CHENG Cheng, SHI BaoJun

“…In order to study the influence of load change on the meshing characteristics of cycloid pinwheel of RV reducer, considering the modification of cycloid tooth profile, the three-dimensional model of cycloid pinwheel mechanism was established by UG. …”
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Research of the CNC Side Milling Method for ZC3 Worm Gear by Hu Yangjing, Huang Xiaotiao, Fang Chenggang, Zhang Hu

“…Then,the NC tool paths are generated by solving the non-uniform division method for tooth surface. Finally,the simulation of the generated machining program is carried out by using the VERICUT,the correctness of the proposed method is verified by comparing with the original calculation tooth surface data. …”
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Study on Engagement Performance of Engagement Sleeve and Engagement Gear Ring of Without Synchronizer Transmission by Cui Wenxia, Zhang Ruiliang, Zhang Bo

“…The engagement process is divided into four stages: free sliding stage, tooth tip collision stage, tooth tip friction stage and inter-tooth meshing stage, a mathematical model is established. …”
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Spontaneous Eruption of Premolar Associated with a Dentigerous Cyst by Irla Karlinne Ferreira de Carvalho, Anibal Henrique Barbosa Luna

“…It presents as a unilocular, asymptomatic radiolucency involving the crown of an impacted tooth, commonly noticed in X-rays to investigate absence, wrong tooth position, or delay in the chronology of eruption. …”
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Endodontic Treatment and Esthetic Management of a Geminated Central Incisor Bearing a Talon Cusp by Elif Tarım Ertaş, Meral Yırcalı Atıcı, Hakan Arslan, Bilal Yaşa, Hüseyin Ertaş

“…Gemination with talon cusps is an uncommon morphologic dental anomaly, characterized by the formation of clinically wide tooth that can cause significant aesthetic and clinical problems including esthetic impairment, pain, caries susceptibility, and tooth crowding. …”
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Designing and Dressing Method of Worm Grinding Wheel for Grinding Process of Face Gear by Wang Xiaojun, Li Xiaozhen, Ye Wen

“…Combing the relationship between the tooth profile equation and the coordinate transformation and using the enveloping theory,the tooth profile equation of face gear,worm grinding wheel and medium gear are deduced,the processing method of worm grinding wheel and face gear is obtained. …”
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