Cone-beam computed tomographic and histologic examination of teeth concrescence: A case report

Jeong, Jae-Wook; Kim, Gyu-Tae

doi:2026.64.1.8

J Korean Dent Assoc > Volume 64(1); 2026 > Article

Case Report

Journal of Korean Dental Association 2026;64(1):8-12.
DOI: https://doi.org/10.22974/jkda.2026.64.1.002 Published online January 31, 2026.

콘빔전산화단층촬영을 통한 유합치의 진단 및 조직학적 분석: 증례 보고

Cone-beam computed tomographic and histologic examination of teeth concrescence: A case report

Jae-Wook Jeong¹

, Gyu-Tae Kim²

¹Department of Dental Hygiene, Shingu College, Seongnam, Korea
²Department of Oral and Maxillofacial Radiology, College of Dentistry, Kyung Hee University, Seoul, Korea

Correspondence: Jae-Wook Jeong, Tel: +82-31-740-1662,
Email: jeongjae@shingu.ac.kr

Received: 16 October 2025 • Revised: 12 November 2025 • Accepted: 30 December 2025

Abstract

Concrescence represents a rare tooth abnormality in which adjacent teeth are united in the cementum. Since the crown of a tooth has a standard anatomical structure, concrescence is not easily diagnosed clinically. In fact, it is easy to mistake concrescence as just overlapping in the radiograph of two adjacent teeth. The presence of concrescent teeth may influence the extraction of teeth, endodontic treatment, and even orthodontic treatment. Therefore, the possibility of these abnormalities in diagnosis and treatment plans should be considered for over-lapped teeth. This case report demonstrates the diagnosis of concrescence through preoperative cone-beam computed tomography and the subsequent histological analysis of the extracted tooth.

Key Words: Cone-Beam Computed Tomography; Molar, Third; Tooth Abnormality; Tooth, Impacted