SURGICAL EXTRUSION OF THE CROWN-ROOT FRACTURED INCISORS: CASE REPORTS

Lee, Eun-Mi; Kim, Tae-Wan; Kim, Hyun-Jung; Kim, Young-Jin; Nam, Sun-Hyun

Journal of the Korean Academy of Pediatric Dentistry 2008;35(2):305-312.
Published online May 31, 2008.

SURGICAL EXTRUSION OF THE CROWN-ROOT FRACTURED INCISORS: CASE REPORTS

Eun-Mi Lee, Tae-Wan Kim, Hyun-Jung Kim, Young-Jin Kim, Sun-Hyun Nam

Department of Pediatric Dentistry, School of Dentistry, Kyungpook National University

외과적 정출술을 이용한 치관-치근 파절된 미성숙 영구치의 치험례

이은미, 김태완, 김현정, 김영진, 남순현

경북대학교 치과대학 소아치과학교실

Correspondence: Sun-Hyun Nam, Tel: 053-420-5964, Fax: 053-426-6608, Email: lemylove@hanmail.net

Abstract

Crown-root fractures occur throughout both crown and root, and are defined as fractures involving enamel, dentin and cementum. The fractures may be grouped according to pulpal involvement into complicated and uncomplicated one. Crown-root fractures often occur on maxillary anterior teeth and comprise 5% of injuries affecting the permanent dentition and 2% in the primary dentition. To restore crown-root fractured tooth, biologic width must be maintained. For maintaining biologic width, such methods as gingivectomy following osteoplasty or orthodontic extrusion or surgical extrusion are available. Surgical extrusion is a method that extracts the tooth and replants the fractured tooth supragingivally. It is indicated when the length of the crown fragment is less than half the length of the clinical root. In these cases, root canal treatment and crown restoration using light-cured composite resin were performed after surgical extrusion. In following periodic examinations, favorable outcome was observed.