Background: Sella turcica is a saddle-shaped concavity in the body of sphenoid bone situated in the middle cranial fossa of skull, clearly seen on lateral cephalometric radiograph. Aim: The purpose of the study was to measure the size and describe the morphology of sella turcica in different age groups and gender. Materials and Methods: Lateral cephalometric radiographs of 200 subjects of which 100 males and 100 females in the age group of 8-30 years were included in the study population. Linear dimensions which include the length, depth, and anteroposterior diameter were measured and the shape of sella turcica was analyzed and skeletal class of malocclusion was noted. Chi-square test and ANOVA test were used for statistical analysis. Results: In the present study, morphology of sella turcica appeared to be normal shape (upper contour of anterior wall of sella turcica appears to be perpendicular to floor) in 46.5% of the study population and morphological variations in shape were seen in 53.5% of study population. Whereas size was considered there was statistically significant increase in the depth and anteroposterior diameter of sella turcica as age advanced. There was no significant difference in the linear measurements of sella turcica between males and females. Conclusion: The most common shape of sella turcica in the study population was normal shape. There is a gradual increase in the size of sella turcica as age advances.
Background:Removal of impacted third molars is the most common oral surgical procedure. Many investigators have questioned the necessity of removal in patients who are free of symptoms or associated pathologies.Aim:The aim of this retrospective study was to evaluate the incidence of caries on distal aspect of mandibular second molars in patients referred for corresponding third molar assessment and to identify its association with angular position and depth of the impacted mandibular third molars based on the classification of Pell and Gregory.Methodology:Records of 150 patients with impacted third molar presenting to the Department of Oral and Maxillofacial Surgery, Sri Rajiv Gandhi College of Dental Sciences and Hospital, were assessed retrospectively. The radiographic angulation and depth of mandibular third molar impaction were determined and compared to determine the relationship with incidence of caries on the distal surface of the second molar.Results:According to this study results, 37.5% cases show caries on the distal aspect of mandibular second molars. The incidence of caries with mesioangular impacted third molars was 55%. A majority of these mesioangular cases were Level B and Class I as per the Pell and Gregory classification.Conclusion:The prophylactic extraction of mandibular third molars is indicated if the angulation is between 30° and 70° and is justified by incidence of distal caries in the second molars.
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