Accuracy of three-dimensional periodontal ligament models generated using cone-beam computed tomography at different resolutions for the assessment of periodontal bone loss

Hangmiao Lyu; Li Xu; Huimin Ma; Jianxia Hou; Xiaoxia Wang; Yong Wang; Yijiao Zhao; Weiran Li; Xiaotong Li

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자료유형: 학술저널

저자정보: Hangmiao Lyu (Peking University School and Hospital of Stomatology) Li Xu (Peking University School and Hospital of Stomatology) Huimin Ma (Peking University School and Hospital of Stomatology) Jianxia Hou (Peking University School and Hospital of Stomatology) Xiaoxia Wang (Peking University School and Hospital of Stomatology) Yong Wang (Peking University School and Hospital of Stomatology) Yijiao Zhao (Peking University School and Hospital of Stomatology) Weiran Li (Peking University School and Hospital of Stomatology) Xiaotong Li (Peking University School and Hospital of Stomatology)

저널정보: 대한치과교정학회 대한치과교정학회지 대한치과교정학회지 제53권 제2호

발행연도: 2023.3

수록면: 77 - 88 (12page)

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Objective: To develop a method for generating three-dimensional (3D) digital models of the periodontal ligament (PDL) using 3D cone-beam computed tomography (CBCT) reconstruction and to evaluate the accuracy and agreement of the 3D PDL models in the measurement of periodontal bone loss. Methods: CBCT data collected from four patients with skeletal Class III malocclusion prior to periodontal surgery were reconstructed at three voxel sizes (0.2 mm, 0.25 mm, and 0.3 mm), and 3D tooth and alveolar bone models were generated to obtain digital PDL models for the maxillary and mandibular anterior teeth. Linear measurements of the alveolar bone crest obtained during periodontal surgery were compared with the digital measurements for assessment of the accuracy of the digital models. The agreement and reliability of the digital PDL models were analyzed using intra- and interexaminer correlation coefficients and Bland–Altman plots. Results: Digital models of the maxillary and mandibular anterior teeth, PDL, and alveolar bone of the four patients were successfully established. Relative to the intraoperative measurements, linear measurements obtained from the 3D digital models were accurate, and there were no significant differences among different voxel sizes at different sites. High diagnostic coincidence rates were found for the maxillary anterior teeth. The digital models showed high intra- and interexaminer agreement. Conclusions: Digital PDL models generated by 3D CBCT reconstruction can provide accurate and useful information regarding the alveolar crest morphology and facilitate reproducible measurements. This could assist clinicians in the evaluation of periodontal prognosis and establishment of an appropriate orthodontic treatment plan.

#Digital models #Three-dimensional reconstruction #Cone-beam computed tomography

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