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Prevalence of Teeth Number Anomalies in Permanent Dentition in a Sample From Erbil City (an Orthopantomographic Study)

Authors: Khoshee Salih Al-Mufty --- Rebin Ali Mohammed Amin --- Fedil Andraws Yalda --- Ahmad Abdullah Haidar
Journal: Medical Journal of Babylon مجلة بابل الطبية ISSN: 1812156X 23126760 Year: 2017 Volume: 14 Issue: 1 Pages: 180 -188
Publisher: Babylon University جامعة بابل

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Abstract

Supernumerary teeth are those teeth developed along with normal complement as a result of excess dental lamina in the jaws. Developmentally missing teeth include hypodontia, oligodontia and anodontia. Congenital missing of one or more teeth or a supernumerary tooth requires an urgent treatment as suggested by the Index of Orthodontic Treatment Need. This study tries to evaluate the prevalence and distribution of tooth number anomalies in Erbil patients in relation to the side, jaw, tooth types, and gender. Three thousand orthopantomograms of patients (9-36) years' old who is seeking dental treatments are used to determine the spreading and distribution of the hypodontia, oligodontia, and hyperdontia. Their radiographs are retrieved from Orthodontics and Radiographic Clinics at the College of Dentistry, Hawler Medical University, Erbil/Kurdistan Region of Iraq and private dental radiographic clinic in period from 2013 till 2015. A tooth is diagnosed as congenitally missing in case of no identification or discerned radiographically on the basis of calcification or there is no removal evidence. The chi- square test is to determine the importance of the upper and lower numerical teeth abnormality differences and the differences between genders. Five percent was set as the level of significance.Hypodontia was prevalent by 7.76%, it was more often found in females in right side of maxilla. The most missed tooth was maxillary lateral incisor. The permanent congenital missing teeth were frequently in the maxilla. Mesiodens was the most common supernumerary tooth, and its prevalence was 1.13%.


Article
Anatomical study of the relationship of impacted mandibular third molar root apex to inferior alveolar canal in Kurdistan population using orthopantomogram
دراسة تشريحية لعلاقة قمة الجذر المولي الفك العلوي المتأثرة بالقناة السنخية الرديئة في سكان كوردستان باستخدام تقويم العظام

Authors: Khoshee Salih Hameed Al-Mufty --- Fedil Andraws Yalda --- Ali Sultan Al-Refai
Journal: Zanco Journal of Medical Sciences مجلة زانكو للعلوم الطبية ISSN: 19955588/19955596 Year: 2017 Volume: 21 Issue: 3 Pages: 1859-1868
Publisher: Hawler Medical Univeristy جامعة هولير الطبية

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Abstract

Background and objective: Extraction of an impacted mandibular third lower molar tooth is one of the common surgical procedures that may lead to the damage of inferior alveolar nerve due to roots proximity to the mandibular canal. This study aimed to know the relative relationship and proximity of the mandibular third molar roots to the inferior alveolar canal in relation to gender, age, depth of impaction, relation with ramus, and type of angulation of the impacted tooth in Kurdistan population.Methods: A sample of 366 digital panoramic radiographs of patients with impacted mandibular third molar was studied. Panoramic radiographic signs images were evaluated for the presence of root contact with the superior border of the mandibular canal, darkening of the roots apex, deflected roots, narrow root, superimposition of the canal, interruption of the white line, diversion of the inferior alveolar canal, and narrowing of the inferior alveolar canal. The depths of impaction, relation with ramus, and type of angulation were also studied.Results: Significant relation of the proximity of the mandibular third molar roots to the inferior alveolar canal with the gender (P = 0.001) and age (P <0.001) were seen. A significant relation of the proximity of the mandibular third molar roots to the inferior alveolar canal with the depth of impaction (P <0.001), relation with the ramus (P =0.004), and angulation of impaction were also seen (P <0.001).Conclusion: Significant relation of the proximity of the mandibular third molar roots to the inferior alveolar canal with gender, age, depth of impaction, relation with the ramus, and angulation of impaction were seen.

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