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Influence of a Parafunctional Oral Habit on Root Fracture Development After Trauma to an Immature Tooth.
MedLine Citation:
PMID:  21772194     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Root fractures in immature teeth are rare because the resilience of the alveolar bone is more favorable to the occurrence of luxation. This article reports a case of traumatic injury in an immature permanent tooth that progressed to root fracture, having a parafunctional oral habit as the possible modifying factor of case evolution. A 12-year-old boy presented for treatment complaining of a defective restoration and mild pain on the maxillary right central incisor. The patient had a history of crown fracture in this tooth due to trauma 2 years before. The clinical examination showed healthy gingival tissues and no abnormal tooth mobility, whereas radiographic projections revealed healthy periradicular tissues, incomplete root formation, and no visible root fracture. As pulp necrosis was diagnosed, calcium hydroxide therapy was started for canal disinfection and subsequent obturation. However, after 4 weeks of treatment, a horizontal fracture line was observed radiographically in the root's middle third. The patient denied a new traumatic injury, but revealed the habit of chewing on a pencil. Refraining from the deleterious oral habit was strongly advised, and root canal filling with mineral trioxide aggregate was performed to treat the root fracture. After 4 years of follow-up, the tooth has normal function and no abnormal mobility. Images suggestive of remodeling at the apical end of the coronal segment and replacement resorption of the apical segment are seen radiographically. This case demonstrates the need of following cases of dental trauma and the possible influence of parafunctional oral habits as modifying factors of case progression.
Authors:
Claudia Leticia Vendrame Dos Santos; Celia Tomiko Matida Hamata Saito; Eloa Rodrigues Luvizzuto; Wilson Roberto Poi; Sonia Regina Panzarini; Celso Koogi Sonoda
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-7-15
Journal Detail:
Title:  The Journal of craniofacial surgery     Volume:  -     ISSN:  1536-3732     ISO Abbreviation:  -     Publication Date:  2011 Jul 
Date Detail:
Created Date:  2011-7-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9010410     Medline TA:  J Craniofac Surg     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Surgery and Integrated Clinic Dental School of Araçatuba, UNESP-São Paulo State University, Araçatuba, São Paulo, Brazil.
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