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Successful individualized endodontic treatment of severely curved root canals in a mandibular second molar:A case report

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World Journal of Clinical Cases 2022年第14期10卷 4632-4639页

作者： Lai-Jun Xu Jian-Ying Zhang Zi-Hua Huang Xiang-Zhu Wang Hunan Key Laboratory of Oral Health Research Hunan 3D Printing Engineering Research Center of Oral CareHunan Clinical Research Center of Oral Major Diseases and Oral HealthAcademician Workstation for Oral-maxilofacial and Regenerative Medicine and Xiangya Stomatological HospitalXiangya School of StomatologyCentral South UniversityChangsha 410008Hunan ProvinceChina

BACKGROUND The incidence rate of severely curved root canals in mandibular molars is low,and the root canal treatment of mandibular molars with this aberrant canal anatomy may be technically *** SUMMARY A 26-year-old Chinese female patient presented with intermittent and occlusal pain in the left mandibular second *** patient had undergone filling restoration for caries before endodontic *** the aid of cone beam computed tomography(CBCT),a large periapical radiolucency was observed,and curved root canals in a mandibular second molar were confirmed,depicting a severe and curved distolingual *** treatments,including novel individualized preparation skills and techniques and the use of bioceramic materials as an apical barrier,were performed,and complete healing of the periapical lesion and a satisfactory effect were *** A case of severely curved root canals in a mandibular second molar was successfully treated and are reported *** complex anatomy of the tooth and the postoperative effect were also evaluated via the three-dimensional reconstruction of CBCT images,which accurately identified the aberrant canal *** devices and biomaterial applications combined with novel synthesis techniques can increase the success rate of intractable endodontic treatment.

关键词： Cone beam computed tomography Canal curvature mandibular second molar Root canal therapy Case report

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Root Canal System Variation in mandibular second molar: Middle-Mesial Canal

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Open Journal of Stomatology 2023年第1期13卷 25-31页

作者： Juan G. Robledo María Pía Visconti Farkas Pablo A. Rodríguez Endodontics Department School of Dentistry University of Buenos Aires Buenos Aires Argentina

Middle-mesial canals in mandibular molars are present in the population depending on age, sex and ethnicity. However, limited literature alludes to its prevalence. Troughing procedures may enhance identification, cleaning and shaping. This case report expresses the recognition and management of middle-mesial canal in a mandibular second molar of 24 years old Hispanic-Latino male.

关键词： Anatomical Variation Middle-Mesial Canal Root Canal Morphology mandibular second molar

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Incidence of C-shaped root canal systems in mandibular second molars in the native Chinese population by analysis of clinical methods

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International Journal of Oral Science 2012年第3期4卷 161-165页

作者： Yan Wang Jing Guo Hai-Bing Yang Xuan Han Ying Yu Department of Endodontics School of Stomatology Shandong University Shandong Provincial Key Laboratory of Oral BiomedicineJinanChina

The aims of the study were to investigate the incidence of C-shaped root canal systems in mandibular second molars in a native Chinese population using radiography and clinical examination under microscope and to compare the relative efficacies of these methods. For the recognition of C-shaped root canal system, 1 146 mandibular second molars were selected and examined. Teeth with C-shaped canal systems were categorized by using the radiographic classification criteria and the modified Melton＇s method. C-shaped canals were identified in 397 （34.64%） mandibular second molars by radiography （type I, 31.23%; type II, 38.29%; type III, 30.48%）. Clinical examination showed that 449 （39.18%） cases exhibited C-shaped canal systems （C1, 22.94%; C2, 48.11%; C3a, 15.59%; C3b, 13.36%）. As for the result of the radiographic and clinical combined examination, C-shaped root canals were found in 473 （41.27%） mandibular second molars （C1, 21.78%; C2, 45.67%; C3a, 16.70%; C3b, 15.86%）. The incidence of C-shaped root canal diagnosed by radiographic method was statistically different from that by clinical examination and the combined examination （P〈O.05）. The study indicated a high incidence of C-shaped canal system in a Chinese population. The combination of microscopic and radiographic examination is an effective method in identifying the C-shaped root canal system.

关键词： C-shaped root canal incidence mandibular second molar

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A Case Report of Kissing molars Class II

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Open Journal of Stomatology 2024年第5期14卷 249-254页

作者： Toshiyuki Inou Keiichi Uchida Keiko Kaneko Anna Fuji Nina Wakimoto Tatsuo Takaya Hiroyuki Kitamura Hiroshi Mori Yuji Kurihara Department of Oral Diagnostics and Comprehensive Dentistry Matsumoto Dental University Hospital Shiojiri Japan Department of Oral and Maxillofacial Surgery School of Dentistry Matsumoto Dental University Shiojiri Japan

Kissing molars (KMs) is a condition of occlusal molar surfaces in a single follicular space with roots extending in opposite directions. Here, we have reported a case of KMs in a 58-year-old woman. The patient complained of pain in the right mandibular molar region and was diagnosed with KMs consisting of the right mandibular second and third molars. Because of the patient’s pain having subsided at the time of the visit and her unwillingness to undergo tooth extraction, the patient was followed up. KMs is classified into three classes (I-III) and is either true-KMs or pseudo-KMs and presents with or without cystic variants of dental follicles. The presents as true-KMs class II without a cystic variant. With reference to the literature and based on our analysis, the mean age of patients affected by this specific case of KMs is 31.7 years and unilateral KMs is relatively more common (85.7%). Histopathological findings of dentigerous cysts are more often indicated (42.9%). The treatment policy for KMs should therefore be based on the classification of KMs. Importantly, the focus should be on preserving the first and second molars as much as possible. The treatment approach, such as the employment of surgical removal or orthodontics, should be determined by considering the associated factors such as the crowns, tissues, and age of the patient.

关键词： Kissing molars mandibular second molar mandibular Third molar Cone-Beam Computed Tomography

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