Özet:

This study aims to determine the prevalence of supernumerary premolar teeth in dental outpatients in the Department of Oral Diagnosis and Radiology in the Faculty of Dentistry at Erciyes University by clinical and radiographic evaluation, and to investigate the relationship between the findings in relation to gender, localization, and eruption state. The present study included 1202 panoramic radiographs obtained from the patients (494 men/708 women) with the age range of 1225 years, who attended our clinic for their dental problems between June 2006 and November 2007. The data obtained in the study were analyzed by using Fisher's Exact test, p<0.05 were accepted as statically significant. Of 1202 patients included in the study, 1 male (0.20%) and 5 females (0.70%), total 6 patients (0. 49%), had supernumerary premolar teeth by clinical and radiographic evaluation. Of the supernumerary premolar teeth in these 6 patients, 2 (33.3%) were detected in the maxilla and 4 in the mandible (66.7%). In addition, these supernumerary premolar teeth were unilateral in 4 and bilateral in 2 cases. All the detected supernumerary premolar teeth were impacted in the jaws. In our study the prevelance of supernumerary premolar teeth obtained (0.49%) is in the range of prevelenace in the literature. Between the genders the prevelance of supernumerary premolar teeth was found more frequently in women. Supernumerary premolar teeth were detected more often in mandibula compared to maxilla. Therefore, all these detected supernumerary premolar teeth were impacted in the jaws and could only be detected in the panoramic evaluations, indicating the importance of panoramic radiographies in dental examinations.

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