Prevalence and distribution of dilacerations in the permanent dentition of an Iranian population

ABSTRACT

A thorough knowledge of external dental root morphology is fundamental for having successful endodontic, orthodontic and surgical treatments in dentistry. The aim of this anatomical study was to determine the incidence of tooth dilacerations in Kerman, a province in the Southeastern Islamic Republic of Iran. A cross-sectional study was performed on a total of 3150 teeth from 800 PA radiographs; 100 radiographs from each 8 anatomic divisions of the dental arch, within a Kerman population. The numbers of radiographs were equal between 2 genders; 400 from females and 400 from males. Radiographs were studied by 3 specialists in this field in order to determine and record the prevalence and distribution of dilacerations in different teeth of this population. Amongst the total of 3150 teeth from 800 radiographs, 52 teeth (1.65%) showed dilacerations. The prevalence of this anomaly was 7.5% in males and 5% in females, and the distribution was almost equal between different teeth of the maxilla (2%-4%); meanwhile in the mandible, the maximum prevalence was in third molars (14%) and the rate was nil in anterior teeth (Spss and Excel softwares, IBM). The prevalence of tooth dilacerations was almost equal between genders in the Kerman population that was studied. The findings indicated that the presence of dilacerated roots was more prevalent in females in the mandibular arch, while this anomaly was more prevalent in males in the maxillary arch. Interestingly, none of the mandibular incisor teeth displayed this anomaly

RESUMEN

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