| ACCURACY OF CONE BEAM COMPUTED TOMOGRAPHY IN VOLUMETRIC EVALUATION OF THE MANDIBULAR CONDYLE |
| Paper ID : 1020-YRC2022 |
| Authors |
|
Nehal Yassin *, Gehan Gamal el din el Desouky, ahmed el rawdy suez canal university |
| Abstract |
| INTRODUCTION: The 3-D evaluation of the mandibular condyle could be particularly interesting, as it plays an important role in the final (adult) dimension of the mandible, as well as temporomandibular disorders, facial asymmetries and certain malocclusions. Hence, their assessment is of the utmost importance in diagnosis. Data about the accuracy of volume estimation of the condyle obtained from CBCT compared to the actual volume of the mandibular condyle are scarce. For this reason, an accurate and precise measurement method is crucial. OBJECTIVES: The aim of the present study is to determine the accuracy of volumetric analysis of the mandibular condyle using cone-beam computed tomography (CBCT). MATERIALS AND METHODS: This study was conducted on 6 dry human mandibles containing 12 condyles. Volumetric measurements of the condyles were taken using CBCT. A replica model of the condyle was obtained and used for assessment of real physical volume of the condyle (gold standard) using the water displacement technique. The radiographic volumetric measurements of the condyles were then compared to the real volumetric measurements and assessed for accuracy. RESULTS: Condylar volume assessment showed higher CBCT volume measurements in comparison to physical ones with a mean error = 0.34 cm3, denoting an overestimation in CBCT readings =17.74 %. CONCLUSION: CBCT volumetric measurements using automatic segmentation is a reproducible, fast and feasible method for volume segmentation of mandibular condyles. For application in the dental office, clinicians should be cautious when planning treatment procedures involving condylar volume assessment since CBCT tends to significantly overestimate the obtained measurements. |
| Keywords |
| Cone beam computed tomography, mandibular condyle, volumetric accuracy, water displacement method |
| Status: Accepted (Poster Presentation) |
