Magalhães Ana Carolina, Pessan Juliano Pelim, Cunha Robson Frederico, Delbem Alberto Carlos Botazzo
School of Dentistry of Araçatuba, São Paulo State University, UNESP, São Paulo, SP, Brazil.
J Appl Oral Sci. 2007 Dec;15(6):465-9. doi: 10.1590/s1678-77572007000600002.
Regional odontodysplasia (RO) is a rare developmental anomaly involving both mesodermal and ectodermal dental components in a group of contiguous teeth. It affects the primary and permanent dentitions in the maxilla and mandible or both jaws. Generally it is localized in only one arch. The etiology of this dental anomaly is uncertain. Clinically, affected teeth have an abnormal morphology, are soft on probing and typically discolored, yellow or yellowish-brown. Radiographically, the affected teeth show a "ghostlike" appearance. This paper reports the case of a 5-year-old girl presenting this rare anomaly on the left side of the maxillary arch, which crossed the midline. The primary maxillary left teeth (except for the canine) and the primary maxillary right central incisor were missing due to previous extractions. The permanent teeth had a "ghostlike" appearance radiographically. The treatment performed was rehabilitation with temporary partial acrylic denture and periodic controls. In the future, the extraction of affected permanent teeth and rehabilitation with dental implants will be evaluated. The presentation of this case adds valuable information to pediatric dentists to review special clinical and radiographic features of RO, which will facilitate the diagnosis and treatment of patients with this condition.
区域牙发育异常（RO）是一种罕见的发育异常，累及一组相邻牙齿的中胚层和外胚层牙体成分。它可影响上颌骨和下颌骨或上下颌的乳牙列和恒牙列。通常它仅局限于一个牙弓。这种牙发育异常的病因尚不确定。临床上，患牙形态异常，探诊时质地软，通常变色，呈黄色或黄棕色。影像学上，患牙呈现“幽灵样”外观。本文报告了一名5岁女孩的病例，其在上颌牙弓左侧出现这种罕见异常，且病变跨越中线。上颌左侧乳牙（除尖牙外）和上颌右侧乳中切牙因先前拔牙而缺失。恒牙在影像学上呈现“幽灵样”外观。所采取的治疗方法是用临时局部丙烯酸义齿进行修复并定期检查。未来，将评估拔除患恒牙并用牙种植体进行修复的方案。该病例的呈现为儿科牙医提供了有价值的信息，有助于他们回顾区域牙发育异常的特殊临床和影像学特征，从而促进对该病患者的诊断和治疗。
