CONTINUED APEXOGENESIS ON TRAUMA INDUCED NONVITAL IMMATURE PERMANENT TOOTH

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Journal of the Korean Academy of Pediatric Dentistry 2009;36(4):640-646.
Published online October 30, 2009.

CONTINUED APEXOGENESIS ON TRAUMA INDUCED NONVITAL IMMATURE PERMANENT TOOTH

경북대학교 치과대학 소아치과학교실

외상으로 실활된 미성숙 영구치에서의 계속된 치근 형성

강유진, 김혜영, 김영진, 김현정, 남순현

경북대학교 치과대학 소아치과학교실

Correspondence: ,

Received: 4 June 2009 • Accepted: 21 August 2009

Abstract

n case of luxation injuries, loss of tooth vitality is common. And in case of trauma in the immature permanent teeth, precise diagnosis of pulp necrosis is very difficult. That is because limitation in distinguishing between normal dental papilla in immature permanent teeth, transient apical breakdown(TAB), which is part of normal healing process, and apical radiolucency in pulp necrosis. Especially in non-vital immature permanent tooth, the treatment is complex and requires long time. This clinical case report shows that severely infected immature teeth with periradicular periodontitis can undergo healing and apexogenesis or maturogenesis with no definative treatment or after conservative treatment. In the cases reported, we emphasize the considerable power of regeneration of the tooth, probably due to its large number of undifferentiated mesenchymal cells in the dental papilla, pulp tissue, periodontal ligament tissues. Thus, when endodontic treatment in immature permanent teeth, over instrumentation is not recommend for preserve the apical vital stem cells.

Key Words: Apexification; Non-vital, Trauma, Immature tooth