上颌乳中切牙滞留的局部因素分析

A Study of Local Aetiological Factors in Retained Deciduous Maxillary Incisors

目的探讨上颌乳中切牙滞留的局部因素,为临床防治提供参考。方法回顾分析20例(24颗)上颌乳中切牙滞留的临床资料,分析各种局部因素与上颌乳中切牙滞留的关系。结果 24颗滞留上颌乳中切牙的局部因素包括上颌乳中切牙根尖病变13颗(54.2%),多生牙或牙瘤5颗(20.8%),上颌乳中切牙外伤3颗(12.5%),恒切牙胚发育异常(位置、方向、形态等)2颗(8.3%)。结论上颌乳中切牙滞留常常是局部病变的一种表象,及早发现与治疗原发疾病能有效预防上颌乳中切牙滞留。

Objective To study the local aetiological factors in retained deciduous maxillary incisors.Methods The clinical data of 20 patients with local aetiological factors（24 teeth） were retrospectively analyzed,and the relationship between the local aetiological factors and retained deciduous maxillary incisors were ascertained.Results The local aetiological factors included：root apex disease in 13 teeth（54.2%）,supernumerary teeth or odontoma in 5（20.8%）,trauma in 3（12.5%）,abnormal permanent central incisor development（location,direction,shape,etc.） in 2（8.3%）.Conclusion The retained deciduous maxillary incisors are often a sign of local disease,and early diagnosis and timely intervention are very critical in the success of treatment.