上颌前牙区多生牙临床特征及拔除时机选择  

Clinical Features and Timing Selection for Extraction of Supernumarary Teeth in Maxillary Anterior Region

作　　者：沙震宇 王了 SHA Zhenyu;WANG Liao(State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.)

机构地区：[1]口腔疾病研究国家重点实验室,国家口腔疾病临床医学研究中心,四川大学华西口腔医院口腔外科门诊,四川成都610041

出　　处：《口腔医学研究》2020年第10期902-904,共3页Journal of Oral Science Research

基　　金：青年科学基金项目(编号:81600910)。

摘　　要：多生牙是指牙弓上除20颗乳牙以及32颗恒牙以外的牙或者具有牙结构的物质。在临床中,多生牙常常会引起多种并发症,包括牙列不齐、恒牙阻生、邻牙牙根吸收、囊肿形成等。流行病学研究表明,上颌前牙区多生牙发病率最高,在恒牙列发病率为1.5%~3.5%,乳牙列为0.3%~0.8%,拔除多生牙对预防并发症具有积级意义,然而目前临床研究对于多生牙的拔除时机仍然存在较大争议。本文主要针对上颌前牙区多生牙的临床特征及国内外治疗时机研究进展进行回顾。The definition of supernumarary teeth is that teeth come from dental sac in excess of the normal number.Mesiodens are the most common supernumerary teeth,occurring in 0.3%-0.8%in deciduous dentition and 1.5%-3.5%in permanent dentition.Supernumerary teeth always cause complications such as dental impaction,overcrowding,root dilacerations,or the formation of follicular cysts.The aim of this paper is to review the prevalence,etiology,diagnosis,treatment,and complications of Mesiodens.

关 键 词：多生牙 牙拔除 治疗时机 

分 类 号：R78[医药卫生—口腔医学]