Prevalence of Congenitally Missing Maxillary Lateral and Mandibular Second Premolars in Panoramic Radiographs of ۱۲ To ۱۸ Years Old Patients Referred To the Sari Dental Clinic from ۲۰۱۳ To ۲۰۲۳

Background: One of the most prevalent developmental dental abnormalities, congenital tooth loss, occurs when tooth buds fail to form and causes a wide range of issues. The purpose of this study is to determine the frequency of congenital absence of the maxillary lateral incisor teeth and the mandibular second premolars in panoramic images among ۱۲ to ۱۸-year-old patients referred to the Dental Clinic of Sari between ۲۰۱۳-۲۰۲۳. Method: This analytical study included panoramic radiographs of patients aged ۱۲ to ۱۸ years referred to the radiology department of Mazandaran University of Medical Sciences. Data such as the number of congenital absences of maxillary lateral and mandibular second premolars, age, and sex were gathered. SPSS V.۲۵ was used for data analysis. A p-value of less than ۰.۰۵ was considered statistically significant. Results: In this study, ۱۳۳۴ radiographs were examined over the course of eight years. Out of ۱۳۳۴ patients, ۳۲ (۲.۴%) and ۲۲ (۱.۶۵) patients had congenitally absent mandibular second premolars and maxillary laterals, respectively. Additionally, a statistically significant relation was observed in terms of the absence of these teeth on both sides in each jaw (P = ۰.۰۰). Nevertheless, no significant association was observed in terms of sex (P = ۰.۸۵۶). Conclusion: The prevalence of absent lateral maxillary teeth and mandibular second premolars was ۱.۶۵% and ۲.۴%, respectively. Although girls were found to have the highest prevalence, this was not statistically significant. Additionally, the left side of each jaws had the highest prevalence of absent teeth which was not significant.

Keywords:

: Congenitally Missing Teeth , Maxillary Lateral Teeth , Mandibular Second Premolar Teeth