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目的:研究下颌第一恒磨牙牙根及根管系统。方法:报告1例双侧下颌第一恒磨牙近中3根管病例,分析其诊疗经过并复习牙根及根管系统文献。结果:该病例中双侧下颌第一恒磨牙根管治疗后进行完善根管充填。结论:下颌第一恒磨牙的牙根及根管系统变异多样,临床治疗中应注意,以提高根管治疗的成功率。
Objective: To study the root and root canal system of mandibular first permanent molars. Methods: One case of bilateral mandibular first permanent molars was reported in 3 cases. The clinical data of the root canal and root canal system were analyzed. Results: In this case, the root canal of bilateral first permanent molars with bilateral mandibular root canal filling was completed. Conclusion: There are many variations of root system and root canal system in the first permanent mandibular molar, which should be paid attention to in clinical treatment to improve the success rate of root canal therapy.