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: 3.38). 10/2007; 33(9):1025-30. DOI: 10.1016/j.joen.2007.04.013
Source: PubMed


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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Article: Dilaceration: Review of an Endodontic Challenge

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    • "Las curvaturas radiculares excesivas reciben el nombre de dilaceraciones y la literatura las define como el resultado de un disturbio en la formación dentaria que produce una desviación o curva en la relación lineal de la corona de un diente y su raíz (Colak et al.). El reconocimiento y diagnóstico de esta alteración resulta importante sobre todo en los tratamientos endodónticos, en las exodoncias y en los movimientos dentarios por ortodoncia (Jafarzadeh & Abbott, 2007; Hamasha et al., 2002). Una dilaceración ocurre cuando existe una desviación de la raíz en dirección mesial o distal, formando un ángulo de 90º o más con el eje longitudinal normal del diente o raíz (Colak et al.; Hamasha et al.; Malcic et al., 2006). "

    International Journal of Morphology 06/2015; 33(2):476-482. DOI:10.4067/S0717-95022015000200012 · 0.32 Impact Factor
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    • "Exploration and negotiation of root canal system is difficult in dilacerated teeth due to its high degree of curvature. The rate of endodontic errors such as ledging, transportation and zipping can be higher in these teeth [4]. Therefore, complete debridement of canals, eliminating microorganisms from it and its obturation becomes difficult. "
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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.
    12/2013; 14(4):160-4.
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    • "Tooth is considered to have a dilaceration toward the mesial or distal direction if there is a 90° angle or greater along the axis of the tooth or root. Dilaceration can also be defined as deviation of the apical part of the root by 20 degree or more (Jafarzadeh & Abbott 2007). "

    11/2013; 2(1). DOI:10.14419/ijdr.v2i1.1659
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