Clinical management of a fused upper premolar with supernumerary tooth: a case report.
In dentistry, the term 'fusion' is used to describe a developmental disorder of dental hard tissues. In the permanent dentition, fusion of a normal tooth and a supernumerary tooth usually involves the incisors or canines. However, a few cases of fusion involving premolars have also been reported to date. We present a rare case in which fusion of the maxillary left second premolar and a supernumerary tooth in a 13-year-old girl was diagnosed using cone beam computed tomography (CBCT, Alphard-3030, Asahi Roentgen Ind. Co., Ltd.). The tooth was bicuspidized after routine nonsurgical root canal treatment, and the separated teeth underwent appropriate restoration procedures. The second premolar and supernumerary tooth remained asymptomatic without any signs of inflammation after a follow-up period of 9 years. Identification of anatomical anomalies is important for treatment in cases involving fusion with supernumerary tooth, and therefore the microscopic examinations and CBCT are essential for the diagnosis. Fused teeth can be effectively managed by the comprehensive treatment which includes both endodontic and periodontal procedures.
Program in Conservative Dentistry, Department of Dentistry, Graduate School, Kyung Hee University, Seoul, Korea.
Kyu-Min
0000-0002-9168-4983
KM
Cho
Department of Conservative Dentistry, Kyung Hee University Dental Hospital at Gangdong, Seoul, Korea.
Ji-Hyun
0000-0002-4672-3381
JH
Jang
Department of Conservative Dentistry, Kyung Hee University School of Dentistry and Oral Biology Research Institute, Kyung Hee University Dental Hospital at Gangdong, Seoul, Korea.
Sang-Hyuk
0000-0002-0518-6938
SH
Park
Bicuspidization; Cone-beam computed tomography; Fused teeth; Supernumerary tooth