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Introduction: Supernumerary teeth (ST) are supplementary teeth or tooth substances that develop in addition to the usual configuration of 20 deciduous and 32 permanent teeth. The aetiology of ST is not well understood. Using regular radiographs, it is sometimes impossible to identify and formulate therapy plans for the purpose of predicting and surmounting potential complications.

Objective: To assess the characteristics of supernumerary teeth in cone beam computed tomography (CBCT).

Methodology: A descriptive cross-sectional study was conducted from 2021 November to 2023 October after ethical approval from institutional review committee of Kantipur Dental College. A total of 180 supernumerary teeth samples were retrospectively collected by convenience sampling method and evaluated. Data collected were entered in Microsoft Excel sheet and analysed.

Result: Overall, 180 ST were found in 142 patients (107 males; 35 females). Among them, 110 patients had one ST, 28 had two, three had three, and one had five ST. The supernumeraries were maxillary in 110 and mandibular in 32 patients respectively. A total of 109 teeth were found in the anterior area, 33 were in the premolar region and 38 in the molar region. The teeth were mainly odontomatous (61) followed by conical (52 teeth), supplemental (42 teeth), and tuberculate (25 teeth). Normally oriented were 115 teeth, 34 were inverted, and 31 were transverse.

Conclusion: The ST greatly differ in position, shape, number, location, and may have abnormal eruption path. The CBCT provides valuable information about morphology, position, angulation and location of ST, thus aiding in an accurate diagnosis.

Characteristics; cone beam computed tomography; diagnosis; supernumerary teeth.