Perlea Paula, Dragomir Cristina, Bodeanu Andreea, Temelcea Anca Nicoleta, Iliescu Alexandru Andrei
Department of Dental Technique, Faculty of Midwives and Nursing, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania;
Rom J Morphol Embryol. 2018;59(1):359-365.
According to their phenotypic features, the hereditary dentin defects in humans are categorized in two major classes: dentinogenesis imperfecta and dentin dysplasia. At its turn, the dentin dysplasia is subdivided in dentin dysplasia type I and dentin dysplasia type II, a milder clinical manifestation of the condition. Here we report the clinical and radiographic findings of dentin dysplasia type II in two members of a family, a young adult female and her mother. Except a mild shade change of the incisal margins in upper central incisors and left upper canine of the daughter no abnormal occlusal wear or crown shape change of the teeth were disclosed in both patients. However, confluent large pulp stones in the thistle-tube shaped pulp chambers and pulpal obliteration were a common finding. The condition was diagnosed as dentin dysplasia type II.
根据其表型特征，人类遗传性牙本质缺陷主要分为两大类：牙本质发育不全和牙本质发育异常。牙本质发育异常又可细分为I型牙本质发育异常和II型牙本质发育异常，后者是该病症较轻微的临床表现。在此，我们报告了一个家族中两名成员——一名年轻成年女性及其母亲——的II型牙本质发育异常的临床和影像学表现。除了女儿上颌中切牙和左上尖牙切缘有轻微色泽改变外，两名患者均未发现异常的咬合磨损或牙齿冠部形状改变。然而，在蓟管状牙髓腔中发现融合性大牙髓石和牙髓腔闭塞是常见现象。该病症被诊断为II型牙本质发育异常。
