Article

Dilaceration: review of an endodontic challenge.

Department of Endodontics, Faculty of Dentistry and Dental Research Center, Mashhad University of Medical Sciences, Vakilabad Boulevard, Mashhad, Iran.
Journal of Endodontics (Impact Factor: 2.93). 10/2007; 33(9):1025-30. DOI: 10.1016/j.joen.2007.04.013
Source: PubMed

ABSTRACT Dilaceration is the result of a developmental anomaly in which there has been an abrupt change in the axial inclination between the crown and the root of a tooth, but the criteria in the literature for recognizing root dilaceration vary. Two possible causes of dilaceration are trauma and developmental disturbances, and it has also been proposed that it might be associated with some developmental syndromes. Dilaceration can be seen in both the permanent and deciduous dentitions, and it is more commonly found in posterior teeth and in the maxilla. Periapical radiographs are the most appropriate way to diagnose the presence of root dilacerations. Diagnosis, endodontic access cavity preparation, root canal preparation and filling, and other related treatments might be complicated by the presence of a dilaceration. A review of the literature and a discussion of the options for managing this condition are presented.

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    ABSTRACT: Dilaceration of teeth can occur as a result of trauma to its primary predecessors. Dilaceration is an abnormality that originates from a traumatic non-axial displacement of the already formed hard tissue in relation to the developing tissue. Root dilacerations are more common than the crown dilacerations. We present report of an abnormal case where crown dilacerations of maxillary permanent left central incisor along with localized enamel hypoplasia was seen in 12 year old patient.
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    ABSTRACT: Statement of Problem: Dilaceration is defined as a sudden change in the axial inclination of root or between the crown and the root of a tooth. There is no previous study evaluating its prevalence in south of Iran. Purpose: This study evaluates the prevalence of root dilaceration on the basis of its location in dental arch in a sample of dental patients referring to Shiraz dental school, Iran. Materials and Method: This retrospective study was performed using full mouth periapical radiographs of 250 patients who were referred to Shiraz dental school. Buccal and lingual dilaceration was determined by its known" bull's eye" appearance in the radiographs or if the deviation was in the mesial or distal directions; the angle of 90 degree or greater between the deviation and the axis of root was the inclusion criteria. Results: Root dilaceration was detected in 0.3% of teeth and 7.2% of patients. It was distributed equally between the maxilla and mandible. Mandibular second molar was the most frequent dilacerated tooth (1.6%) followed by maxillary first molar (1.3%) and mandibular first molar (0.6%). The alveolar nerve was the most common anatomic structure near dilacerated teeth. Conclusion: According to this study, root dilaceration is an uncommon developmental anomaly which occurs mostly in the posterior teeth.
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May 31, 2014