Evaluation of the accuracy of cone beam computed tomography on measuring impacted supernumerary teeth

Abstract

Supernumerary teeth may affect the tooth eruption negatively if they occur on the eruption way, and the treatment choice is usually the extraction to prevent the impaction of adjacent permanent teeth. CBCT enables clear and three dimensional images, and it may be helpful to determine the exact location and to measure the dimensions of the supernumerary tooth to avoid any complication during the extraction process. The aim of the present study was to evaluate the accuracy of CBCT on measuring the tooth length and crown width of impacted supernumerary teeth. Twenty-five impacted supernumerary teeth were evaluated using CBCT, and each sample's tooth length and crown width were measured prior to the extraction. After all the extractions were completed, the actual measurements were performed on the same samples. The differences between CBCT and actual measurements were evaluated statistically. Measurements on CBCT images were significantly larger than the actual measurements on tooth length and crown width. For tooth length and crown width, p value was found as 0.045, and <0.001, respectively. The results of the present study should be considered as important by clinicians during the treatment planning to decrease any complication risk under certain conditions such as being so close to an important anatomical structure or the root of an adjacent tooth. SCANNING 38:579-584, 2016. © 2016 Wiley Periodicals, Inc.

Hard Tissue Preservation and Recovery in Minimally Invasive Alveolar Surgery Using Three-Dimensional Printing Guide Plate

“…It is difficult to accurately determine the position and the relationship with surrounding anatomic structures of impacted teeth due to image overlap and proportional distortion. 18 Cone-beam computed tomography and Multisliecs Helieal CT (3D photography) can locate impacted teeth, measure the length and width of teeth, determine the distance between impacted teeth, and adjacent tooth roots or cortical bone from 3D direction. It avoids the deviations caused by image overlap and improves the accuracy.…”

Surgical Management of a Supplemental Permanent Maxillary Tooth with Mesiodens in a Non-Syndromic Patient: A Case Report

“…15 Occlusal and periapical radiographs aid in localizing the supernumerary teeth in the incisor region, where they appear most commonly as suggested by Rajab et al and Mahboob et al 8,16 Use of recent diagnostic aids such as cone-beam computed tomography (CBCT) with 3D imaging provides clear and three dimensional images and assist in exact location and successful management of supernumerary tooth as reported by Das et al 17,18 Measurement on CBCT images should be considered as important by clinicians during the treatment planning to decrease the risk of complications. 19 Piezosurgery technique can be advocated to remove deeply impacted supernumerary tooth in the anterior maxillary region instead of conventional labial or palatal surgical approach. It limits the extent of surgical invasion and can be practiced as a minimally invasive and a safe surgical procedure.…”

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“…Bilateral supplemental permanent maxillary lateral incisors in the absence of any syndrome have also been reported [15]. Occlusal and periapical radiographs aid in localizing the supernumerary teeth in the incisor region, where they appear most commonly as suggested by Rajab et al and Mahboob et al [8,16] Use of recent diagnostic aids such as cone-beam computed tomography (CBCT) with 3D imaging provides clear and three dimensional images and assist in exact location and successful management of supernumerary tooth as reported by Das et al [17,18] Measurement on CBCT images should be considered as important by clinicians during the treatment planning to decrease the risk of complications [19]. Piezosurgery technique can be advocated to remove deeply impacted supernumerary tooth in the anterior maxillary region instead of conventional labial or palatal surgical approach.…”