Franco Ademir, Vetter Flávia, Coimbra Eliane de Fátima, Fernandes Ângela, Thevissen Patrick
Department of Imaging and Pathology, Forensic Odontology, KU Leuven, Kapucijnenvoer 7, Block B, 3000, Leuven, Belgium.
Division of Oral Radiology, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, R. Dr. José Rocha Junqueira 13, Ponte Preta, Campinas, São Paulo, 13.045-755, Brazil.
Int J Legal Med. 2020 Jan;134(1):347-353. doi: 10.1007/s00414-019-02206-x. Epub 2019 Nov 21.
This study aimed at performing and comparing third molar development staging in extracted teeth (EX), panoramic radiography (PAN), and cone beam computed tomography (CBCT). Extracted third molars (n = 158, 95 maxillary, 63 mandibular) from 102 patients (36 males, 66 females) having at least one preoperative PAN and one CBCT were studied. Third molar development staging was performed in PAN, EX, and CBCT using Gleiser et al. (1955) technique modified by Köhler et al (1994). A polytomous logistic regression model was used to compare the staging performed in EX and CBCT with the gold standard staging in PAN. The pair-wise stage comparisons between third molar modalities revealed 63.3% equal staging. In all other comparisons, a maximum difference of one stage was detected. No statistically significant differences between the three staging modalities were detected (p = 0.26). The comparison between EX and PAN staging revealed higher similarity (p = 0.98 in stages 5-10) than the comparison between CBCT and PAN staging (p = 0.81 in stages 5, 7, and 9, and p = 0.80 in stages 6, 8, and 10). The studied third molar staging technique originally designed in PAN can be applied for third molar staging EX and in CBCT.
本研究旨在对拔除牙（EX）、全景X线片（PAN）和锥形束计算机断层扫描（CBCT）中的第三磨牙发育阶段进行评估和比较。对102例患者（36例男性，66例女性）的拔除第三磨牙（n = 158，上颌95颗，下颌63颗）进行研究，这些患者均至少有一张术前PAN和一张CBCT。采用Köhler等人（1994年）修改的Gleiser等人（1955年）的技术，在PAN、EX和CBCT中进行第三磨牙发育阶段评估。使用多分类逻辑回归模型，将EX和CBCT中的阶段评估与PAN中的金标准阶段评估进行比较。第三磨牙不同方式之间的两两阶段比较显示，63.3%的阶段评估相同。在所有其他比较中，检测到最大相差一个阶段。未检测到三种阶段评估方式之间存在统计学显著差异（p = 0.26）。EX和PAN阶段评估之间的比较显示出比CBCT和PAN阶段评估之间更高的相似性（5 - 10阶段中p = 0.98）（5、7和9阶段中p = 0.81，6、8和10阶段中p = 0.80）。最初在PAN中设计的研究第三磨牙阶段评估技术可应用于EX和CBCT中的第三磨牙阶段评估。
