Construction reproducibility of a composite tooth model composed of an intraoral-scanned crown and a cone-beam computed tomography-scanned root
임승원, Moon Ryu-Jin, 김민석, 오민희, 이경민, 황현식, 김태우, 백승학, 조진형,
소속 상세정보
임승원 ( Lim Seung-Weon ) - Chonnam National University School of Dentistry Department of Orthodontics
( Moon Ryu-Jin ) - Chonnam National University School of Dentistry Department of Orthodontics
김민석 ( Kim Min-Seok ) - Chonnam National University School of Dentistry Department of Oral Anatomy
오민희 ( Oh Min-Hee ) - Chonnam National University School of Dentistry Department of Orthodontics
이경민 ( Lee Kyung-Min ) - Chonnam National University School of Dentistry Department of Orthodontics
황현식 ( Hwang Hyeon-Shik ) - Chonnam National University School of Dentistry Department of Orthodontics
김태우 ( Kim Tae-Woo ) - Seoul National University School of Dentistry Department of Orthodontics
백승학 ( Baek Seung-Hak ) - Seoul National University School of Dentistry Department of Orthodontics
조진형 ( Cho Jin-Hyoung ) - Chonnam National University School of Dentistry Department of Orthodontics
Abstract
Objective: To evaluate the construction reproducibility of a composite tooth model (CTM) composed of an intraoral-scanned crown and a cone-beam computed tomography (CBCT)-scanned root.
Methods: The study assessed 240 teeth (30 central incisors, 30 canines, 30 second premolars, and 30 first molars in the maxillary and mandibular arches) from 15 young adult patients whose pre-treatment intraoral scan and CBCT were available. Examiner-Reference (3 years’ experience in CTM construction) and Examiners-A and Examiner-B (no experience) constructed the individual CTMs independently by performing the following steps: image acquisition and processing into a three-dimensional model, integration of intraoral-scanned crowns and CBCT-scanned teeth, and replacement of the CBCT-scanned crown with the intraoral-scanned crown. The tooth axis angle in terms of mesiodistal angulation and buccolingual inclination of the CTMs constructed by the three examiners were measured. To assess the construction reproducibility of CTMs, intraclass correlation coefficient (ICC) assessments were performed.
Results: The ICC values of mesiodistal angulation and buccolingual inclination among the 3 examiners showed excellent agreement (0.950?0.992 and 0.965?0.993; 0.976?0.994 and 0.973?0.995 in the maxillary and mandibular arches, respectively).
Conclusions: The CTM showed excellent construction reproducibility in mesiodistal angulation and buccolingual inclination regardless of the construction skill and experience levels of the examiners.
키워드
Construction reproducibility; Composite tooth model; Intraoralscanned crown; Cone-beam computed tomography-scanned root
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