Department of Pediatric Dentistry, Faculty of Dentistry, Dicle University, 21280 Diyarbakır, Turkey.
J Clin Pediatr Dent. 2024 Mar;48(2):149-162. doi: 10.22514/jocpd.2024.043. Epub 2024 Mar 3.
This retrospective study was conducted to evaluate different methods for dental age estimation in children and to examine the feasibility of using cone beam computed tomography (CBCT) data for age estimation. A total of 200 radiographic records (both digital panoramic radiographs and CBCTs) were acquired from 100 children aged 9 to 16 years, all taken on the same dates. Radiographic data was acquired from archived records and included both panoramic radiography and CBCT data belonging to the same individual. CBCT was used when panoramic radiographic data was insufficient. The pulp volume and pulp/tooth volume ratio of the left first molar teeth in the mandible were calculated from the CBCT data using MIMICS software. In addition, age was estimated by the Demirjian and Willems methods from data obtained from panoramic radiography images. Statistical analyses and linear regression analysis were performed as necessary. There was a statistically significant difference between the mean difference between the Demirjian method and chronological age, and between the Willems method and chronological age ( < 0.001). Statistically significance was achieved in a linear regression model created from pulp volume ( = 0.098) and pulp/tooth volume ratio ( = 0.395) data for the estimated dental age analysis ( < 0.001) and a negative correlation was observed with chronological age. When compared estimated dental age from CBCT data with chronological age, the pulp/tooth volume ratio method yielded results closer to chronological age than using only pulp volume data. When considering both panoramic radiographic age estimation methods and age estimation methods using CBCT data, we found that the results obtained with the Willems method, a panoramic radiographic age estimation technique, provided the closest results to the chronological age. More contributions should be made to the literature regarding the feasibility of age estimation using pulp and tooth volume as an alternative method.
本回顾性研究旨在评估不同的儿童牙龄估计方法，并探讨使用锥形束计算机断层扫描（CBCT）数据进行年龄估计的可行性。共采集了 100 名 9 至 16 岁儿童的 200 份放射记录（数字全景片和 CBCT），均在同一天拍摄。放射数据取自存档记录，包括属于同一个体的全景放射数据和 CBCT 数据。当全景放射数据不足时使用 CBCT。使用 Mimics 软件从 CBCT 数据中计算下颌左侧第一磨牙的牙髓容积和牙髓/牙体容积比。此外，还通过从全景影像图像获得的数据使用 Demirjian 和 Willems 方法来估计年龄。必要时进行统计分析和线性回归分析。Demirjian 方法和实际年龄之间以及 Willems 方法和实际年龄之间的平均差值存在统计学差异（<0.001）。从牙髓容积（=0.098）和牙髓/牙体容积比（=0.395）数据创建的线性回归模型中获得了统计学意义（<0.001），并且与实际年龄呈负相关。当将 CBCT 数据的估计牙龄与实际年龄进行比较时，与仅使用牙髓容积数据相比，牙髓/牙体容积比方法的结果更接近实际年龄。当同时考虑全景放射年龄估计方法和使用 CBCT 数据的年龄估计方法时，我们发现 Willems 方法（一种全景放射年龄估计技术）的结果与实际年龄最接近。应该有更多的贡献来研究使用牙髓和牙齿容积作为替代方法进行年龄估计的可行性。
