Managing Large Perforated Internal Root Resorption With Partial Pulpectomy: A Case Report by Saeed Asgary

“…ABSTRACT Internal root resorption (IRR) is a complex and often asymptomatic dental condition that can severely compromise tooth vitality and function. This case report presents the successful management of a perforated large IRR lesion in a 49‐year‐old female using an ultraconservative approach involving partial pulpectomy (PP) using calcium‐enriched mixture (CEM) cement. …”
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Research of Axial Modification of Hoist Reducer Gear of Large Mining Mechanical Excavator by Hou Geng, Zhang Yinghui, Chen Xiuhua, Liang Jingfu, Zheng Yingmei

“…Compare to before modification,the gear surface contact stress is obviously reduced and the edge contact condition of tooth surface is obviously improved after modification. …”
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Effect of centrifugal load on crack path in thin-rimmed and webbed gears by F. Curà, A. Mura, C. Rosso

“…As a matter of fact, a possible failure, due to bending fatigue, consists in crack nucleation and consequent growth, in particular in the tooth root zone. These cracks may propagate through the tooth or through the rim. …”
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Research of Internal Excitation of Helical Gear Meshing Transmission by Yue Huijun, Song Yuanyuan, Liu Yang, Xu Xiangyang

“…The stress distribution on tooth contact line is calculated by the finite-element method. …”
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Influence of the Latest Cylindrical Gear International Accuracy Standard on the Gear Strength Calculation by Tang Jie, Chai Lingyu, Shi Zhaoyao

“…The instance calculation results shows that the difference percentage of the calculation tooth root stress of gear a is 4. 86%,while gear b is 14. 12%. …”
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Influence of Error Factors on Transmission Contact for Spiral Bevel Gears by Wang Mingyang, Li Shuwen, Sun Yuehai

“…The full tooth flank contact characteristic of the line contact spiral bevel gear transmission is sensitive to errors. …”
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OPTIMIZATION OF FATIGUE LIFE OF TRANSMISSION SHAFT BASED ON RESPONSE SURFACE METHOD by LIU LongJie, ZHAO LiHui, SHI ChengMiao, ZHENG SongLin, WENG Shuo, LIU XiangZhen, DAI Lei

“…The response surface method and genetic algorithm are used to optimize the structural parameters of the transmission shaft（tooth root fillet, spline transition arc, and arc groove depth）. …”
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Numerical Analysis of the Steady-state Isothermal Elastohydrodynamic Lubrication of Gear Rack Transmission by Xu Caihong, Wang Youqiang, Fan Xiaomeng, Wang Tao, Wang Jian

“…Through research of the theory of mechanism lubrication to reduce the probability of tooth wear and tooth scoring during the transmission process. …”
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Analysis of Bearing Contact Characteristics of Face Gear Drives with Coupling Installation Errors by Weng Dengyan, Shen Yunbo, Xu Weijun

“…When the axial installation error exceeds 0.4 mm, the tooth surface meshing will produce interference. …”
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Central Incisor with Pulp Canal Obliteration and Apical Periodontitis Managed with a 3D Printed-Guided Endodontic Therapy: A Case Report by Abdulaziz Abdulwahed

“…The guide was placed on the tooth surface, and the tooth was accessed until the desired length was reached and the canal was located. …”
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Study on the Variation Law of Static Transmission Error for Cylindrical Gear by Chang Lehao, Liu Geng, He Zhaoxia

“…Based on a modified thin slice method,the static transmission error of cylindrical gear pair with tooth surface error is calculated efficiently. The transmission error is separated into composite deformation and composite mesh error,and the change of transmission error for gears with and without errors is studied. …”
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Study on Gear Elastic Deformation Modification based on Romax by Shi Ruonan, Zhang Ruiliang, Wang Tie, Wu Zhifei, Liu Yaqiong

“…An analysis of the gear micro modification is carried out by means of Romax software and a mathematical model of gear modification,and the methods of determining gear tooth surface modification amount are discussed.The research shows that,the gear modification design based on Romax can make the load of tooth surface uniformly distributed,reduce the transmission error and improve the bearing capacity and transmission quality of gear pair.…”
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The Immunomodulatory Properties of Mesenchymal Stem Cells by Junji Xu, Dunfang Zhang, Peter Zanvit, Dandan Wang

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The Antimicrobial Effects of Poly(Lactic-Co-Glycolic Acid)/Xylitol Nanoparticles on Microorganisms Causing Dental Caries (In Vitro Study) by Ghada Abdul Salam Ibrahim, Eaman Ali AL-Rubaee, Maha Jamal Abbas

“…Background: Many people all around the world suffer from tooth decay, a chronic infectious disease that can lead to tooth loss. …”
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Fatigue Life Evaluation of Racks for the Three Gorges Ship Lift Based on the Load Spectrum by Chen Zhuo, Shi Lubing, Yan Xiaoqing, Tang Weibi, Li Xuefei, Liu Zhongming

“…The results show that, the upper tooth surface of the rack has more meshing times, and its probability is 73.03%. …”
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Oral health disparities in early childhood and intergenerational gaps among noncitizen migrants, Arabs, and Jews in South Tel Aviv, Israel by Jonathan Brill, Adi Vinograd, Barak Hermesh, Rivka Sheffer, Zohar Mor

“…Conclusion Migrant children exhibited better tooth brushing habits than Arab children did but required more urgent dental interventions, highlighting gaps in preventive care. …”
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Evaluation of stress patterns in teeth with endodontic treatment and periapical lesions as abutments for fixed prosthesis: a finite element analysis study by Simay Koç, Ömer Kırmalı, H. Kürşat Çelik

“…The largest level of stress was seen in the cervicobuccal areas of the tooth in all models. Conclusion Prosthetic restorations on teeth with periapical lesions resulted in varying stress and biomechanical responses in the tooth and surrounding bone tissue. …”
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Application of Fractal Analysis in Detecting Trabecular Bone Characteristics Around Mandibular Impacted Third Molars on Dental Panoramic Radiographs by Elif Polat Balkan, Hatice Ahsen Deniz, Mehmet Hakan Kurt, Erçin Samunahmetoğlu, Sevilay Karahan

“…ROI1 is the area between the distal root of the second molar and the mesial of the third molar tooth. On the other hand, ROI2 was selected between the distal root of the first molar tooth and the mesial root of the second molar tooth. …”
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Aesthetic Rehabilitation of a Complicated Crown-Root Fracture of the Maxillary Incisor: Combination of Orthodontic and Implant Treatment by Érica Dorigatti de Avila, Rafael Scaf de Molon, Mauricio de Almeida Cardoso, Leopoldino Capelozza Filho, Marilia Mattar de Amoêdo Campos Velo, Francisco de Assis Mollo, Luiz Antonio Borelli Barros

“…The aim of this paper is to present a complex rehabilitation, of fractured tooth, with implants in anterior region considering the orthodontics extrusion to clinical success. …”
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Microiontophoretic Application of Dynorphin in Dental Pain: Excitatory or Inhibitory Effects by Choi SH, Kim YM, Son JY, Ahn DK

“…The effects of dynorphin on electrically evoked responses of tooth pulp neurons were recorded extracellularly.Results: The results demonstrated that the microiontophoretic application of dynorphin A induced excitatory and inhibitory effects on N-methyl-D-aspartate (NMDA)-evoked responses in electrically stimulated tooth pulp neurons. …”
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