Dorielo Maura Cristiane Orçati, Gonini-Junior Alcides, de Oliveira Durvalino, Bordignon Renata Tarnoschi, Borges Alvaro Henrique
Dental School, University of Cuiabá, Cuiabá, Brazil.
Dental School, University of North Paraná, Londrina, Brazil.
J Conserv Dent. 2017 Jan-Feb;20(1):58-61. doi: 10.4103/0972-0707.209078.
Tooth fusion consists of the union of crowns by the enamel and/or dentin. We describe a case of a patient who presented with a fistula in the apical portion of teeth 32 and 33. Clinically, tooth 32 showed increased crown width in relation to other teeth in the same arch. Radiographic examination evidenced fusion of tooth 32 with a possible supernumerary tooth. Cone-beam computed tomography was used to confirm the radiographic findings and revealed incomplete apex formation of the supernumerary tooth. The fused tooth was subjected to root canal treatment. Calcium hydroxide was used as intracanal medication, changed for every 30 days, for 4 months. Subsequently, the mesial canal received an apical plug of mineral trioxide aggregate mixed with distilled water. At 2 years of follow-up, the tooth showed signs of tissue repair.
牙融合是指牙冠通过牙釉质和/或牙本质融合在一起。我们描述了一例患者，其32和33号牙根尖部出现瘘管。临床上，32号牙相对于同一牙弓中的其他牙齿，牙冠宽度增加。影像学检查证实32号牙与一颗可能的多生牙融合。采用锥形束计算机断层扫描来确认影像学检查结果，显示多生牙根尖形成不完全。对融合牙进行了根管治疗。使用氢氧化钙作为根管内药物，每30天更换一次，持续4个月。随后，近中根管使用与蒸馏水混合的三氧化矿物凝聚体进行根尖充填。随访2年时，该牙显示出组织修复的迹象。
