Prevalence and characteristics of supernumerary teeth in patients from Ras Al Khaimah: A retrospective study from a Teaching Dental Hospital in the UAE

Abstract

Context: Supernumerary teeth are teeth that exceed the normal dental formula. They have variable characteristics and may cause a number of clinical complications. In the Middle East, a prevalence of 0.3%–2.14% has been observed; however, the number of studies of this condition is limited in the region. Aims: This study aimed to examine the prevalence and characteristics of supernumerary teeth in patients from Ras Al Khaimah with consideration of demographic variations. Setting and Design: The study was performed at RAK College of Dental Sciences Dental Clinic. The radiographic database from two consecutive years was used as study sample. Subjects and Methods: A total of 2925 panoramic radiographs were analyzed to identify supernumerary teeth, and demographic-clinical data were extracted from patient files. Statistical Analysis: Data were analyzed using nonparametric tests. P ≤ 0.05 was considered statistically significant. Results: A prevalence of 0.75% was observed. Affected patients were predominantly South Asian males. The teeth were mostly supplemental, para-premolars, and impacted with low incidence of distomolars and no difference in occurrence in the maxilla or mandible. Occurrence of multiple supernumerary teeth was low and restricted to one jaw. Conclusions: This study suggests that one of every 133 patients will have impacted supernumerary teeth that can be expected in the premolar area of the maxilla/mandible, which should be considered when planning community oral health diagnosis and dental treatment strategies.