阻生第三磨牙引起邻牙牙根外吸收的研究进展

Reseasch progress on external root resorption of second molars associated with impacted third molars

阻生第三磨牙(M3)可导致相邻组织结构发生病变,其中包括引起相邻第二磨牙(M2)的牙根外吸收(ERR),即在牙根外表面出现牙体硬组织丧失。阻生M3引起相邻M2 ERR多无明显临床症状,严重者可出现M2牙髓受累甚至牙齿早失。阻生M3的方向以及和相邻M2存在接触是阻生M3引起相邻M2 ERR的重要危险因素。本文就近年来关于阻生M3引起相邻M2 ERR的诊断、流行病学、预后以及治疗方式的研究进展进行综述,总结阻生M3引起相邻M2 ERR的治疗方案为:在多学科指导下,综合考虑ERR的程度、M2有无牙髓受累或其他合并疾病、M3的利用价值、患者个人情况等因素制定治疗方案。这一结论为口腔医师对该类疾病的诊疗提供了参考,并为未来该领域的研究提供了新思路。

Impacted third molars(M3)can result in lesions in adjacent structures,including external root resorption(ERR)of adjacent second molars(M2),which refers to the loss of hard tissue on the outer surface of the root.M2 ERR associated with adjacent impacted M3 can be asymptomatic until the involvement of pulp or even tooth loss.This review summarizes the research progress on the diagnosis,epidemiology,prognosis,and treatment methods of M2 ERR associated with adjacent impacted third molars to provide information for dentists in the diagnosis and treatment of the disease and novel insights for future studies in this field.Results indicate that the direction of the impacted M3 and the contact between the impacted M3 and the adjacent M2 are important risk factors for M2 ERR associated with adjacent impacted M3.Moreover,the following factors should be comprehensively considered for the treatment of M2 ERR associated with adjacent impacted M3,including the degree of ERR,pulp involvement or other combined diseases of M2,utilization value of M3,and personal situation of patients.