アブストラクト(57巻1号:神奈川歯学)

神奈川歯学

Japanese

Title : 臨床応用のための歯列骨格統合モデルの精度検証
Subtitle : 原著
Authors : 岩下英夫1), 濱野奈穂1), 清水統太1), 一色ゆかり1), 福山卓志1), 辻村有哉1), 薗部悠司郎1), 大川公子1,2), 三宅忠隆1,3), 井野智1)
Authors(kana) :
Organization : 1)神奈川歯科大学歯科補綴学講座有床義歯補綴学分野, 2)相武歯科, 3)医療法人審美会 鶴見歯科医院
Journal : 神奈川歯学
Volume : 57
Number : 1
Page : 31-38
Year/Month : 2022 / 6
Article : 原著
Publisher : 神奈川歯科大学学会
Abstract : 「緒言」 近年の3Dデジタル技術の精度向上は著しく, 補綴領域における応用が期待されている. 中でも歯科用CAD/CAMシステムは, 補綴分野において広く利用されるようになり, 歯冠補綴装置の設計・製作から有床義歯補綴装置の応用まで検討されている. また, デジタル画像処理技術は検査・診断から治療計画の立案に応用され, 患者に適した治療の提供を可能にしている. 特に, 歯列石膏模型をスキャニングするデスクトップ型スキャナーに対して口腔内スキャナーは, 患者の口腔内歯列の3Dデータ化に際して, 従来行われてきた印象採得および石膏模型の製作を行うことなく, パソコン上での口腔内歯列の三次元構築を可能とし, 臨床での応用が進んでいる. 一方, 顎顔面骨格の三次元的な骨格診断には, Computed Tomography(CT)による三次元画像により顎関節の構造, 顆頭の形態, 下顎骨の状態など, 重要な情報を得る事ができる.
Practice : 歯科学
Keywords : 口腔内スキャナー, CT画像, STLデータ, 精度

English

Title : Evaluation of the Accuracy of Craniomandibular 3D models for clinical application
Subtitle :
Authors : Hideo IWASHITA1), Naho HAMANO1), Tota SHIMIZU1), Yukari ISSHIKI1), Takushi FUKUYAMA1), Yuya TSUJIMURA1), Yujiro SONOBE1), Kimiko OHKAWA1,2), Tadataka MIYAKE1,3), Satoshi INO1)
Authors(kana) :
Organization : 1)Department of Removable Prosthodontics, Kanagawa Dental University, 2)Soubu dental clinic, 3)Tsurumi dental clinic
Journal : Kanagawa Shigaku
Volume : 57
Number : 1
Page : 31-38
Year/Month : 2022 / 6
Article : Original article
Publisher : Kanagawa Odontological Society
Abstract : [Abstract] Remarkable improvements in the accuracy and precision of three-dimensional (3D) digital technology have been observed in the field of dentistry, and its application to prosthodontics is expected to increase in the future. The purpose of this study was to compare the scanning accuracy of the intraoral scanner and the desktop scanner, and evaluate the accuracy of Craniomandibular 3D models, which integrated data obtained from maxillofacial computed tomography (CT) images and images of the dentition. A dental skull model with 17 reference points was prepared. Using a 3D coordinate measuring machine, the distance between two points was calculated and defined as the standard value. Maxillofacial CT image data from a CT scan (CT3D), dentition image data from an intraoral scanner (IOS), and dentition image data from a desktop scanner (DS) were integrated using the Mandibular Motion Tracking System to obtain the Craniomandibular 3D model data (Integrated IOS, Integrated DS). The distances between points were calculated from the data obtained and compared with the standard values. The distances between the reference points in CT3D showed an increasing tendency when compared to the reference values. The mean error values between the measured values (CT3D, IOS, and DS) and the standard values were 1.338, 0.812, and 0.827mm, respectively. The correlation coefficient of errors in the Craniomandibular 3D models presented a strong correlation between CT3D and Integrated IOS and a moderate correlation between CT3D and Integrated DS. Thus, these findings indicated that the scanning accuracy of dental arch superposition in the Craniomandibular 3D models was high in the Integrated IOS and the Integrated DS, and could be considered for use in the clinical setting. Furthermore, Integrated IOS was associated with lower interventions and costs when compared to Integrated DS.
Practice : Dentistry
Keywords :