Management of Eruption Disturbances of the Mandibular First Molar : A Case Report

Jeon, Hyunsoon Jeon; Yang, Yeonmi; Baik, Byeongju; Kim, Jaegon

Journal of the Korean Academy of Pediatric Dentistry 2013;40(4):314-320.
Published online November 30, 2013.

Management of Eruption Disturbances of the Mandibular First Molar : A Case Report

Hyunsoon Jeon Jeon, Yeonmi Yang, Byeongju Baik, Jaegon Kim

Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University

맹출장애를 가진 하악 제1대구치의 치료 : 증례 보고

전현순, 양연미, 백병주, 김재곤

전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소

Correspondence: Jaegon Kim, Tel: +82-63-250-2128, Fax: +82-63-250-2131, Email: pedodent@chonbuk.ac.kr

Received: 31 July 2013 • Accepted: 1 October 2013

Abstract

With a prevalence rate of 0.01%, the presence of eruption disturbances of mandibular first molar has rarely been in populations. Eruption disturbances of permanent molars have been usually manifested as impaction, primary retention, and secondary retention. The treatments of eruption disturbances are carried out by: periodic observation; surgical exposure; forced eruption after surgical exposure; forced eruption with luxation; surgical repositioning; and extraction. This case report show successfully erupted mandibular first molars by various treatment methods on five patients diagnosed with impaction, primary retention, and secondary retention, respectively. Eruption disturbances of the mandibular first molar can be properly diagnosed with impaction, primary retention, and secondary retention by clinical and radiographic examination at normal eruption time of the mandibular first molar. The treatment should be done synthetically, considering eruption state of affected tooth, the relationship between the affected tooth and the adjacent or opposite tooth, the patient's age, treatment compliance, and economic state.

Key Words: Mandibular first molar, Retention, Impaction, Eruption