ID 111935
タイトル別表記
咬合面の運動からみた前方・側方滑走運動と咀嚼運動の関係
Frontal/Lateral Mandibular Translations-masticatory Movement Relationship
著者
大川, 敏永 徳島大学大学院口腔科学教育部(口腔科学専攻) 徳島大学 教育研究者総覧
Horikawa, Eriko Tokushima University
キーワード
CAD/CAM
Virtual FGP
Functional occlusal surface
資料タイプ
学位論文
抄録
Objective: This study aimed to clarify whether crown restorations with adjusted occlusal surfaces that were formed using frontal/lateral mandibular translations, functioned without interference during mastication.
Materials and Methods: In 10 adult volunteers who had healthy normal dentition, frontal and lateral border movement was measured during unilateral mastication and free mastication, using an ultrasound digital mandibular measuring system (ARCUS digma2). Additionally, precise impressions of the upper and lower dental arch were taken, and dental casts were made. These casts were measured using a CAD/CAM scanning system (ARCTICA). For the fabrication of crown restorations, the functionally generated path technique (FGP technique) was used on the monitor for the lower first and second molar. The movement of the opposite teeth on the occlusal surface during frontal and lateral border movement, during unilateral mastication, and during free mastication was considered the functional occlusal surface. The data of the functional occlusal surface generated by frontal/lateral mandibular translations and that of each of the masticatory functional occlusal surfaces were superimposed using three-dimensional data evaluation software (GOM). The difference between these surfaces was evaluated to determine the interference area, maximum interference difference, and average interference difference.
Results: Interference was present for all functional occlusal surfaces created by mastication as well as those determined by frontal/lateral mandibular translations. The average interference values, in order of free masticatory movement, habitual masticatory side, and non-habitual masticatory side, were as follows. Interference area: 167.5±20.8 mm2, 121.9±28.5 mm2, 144.6±28.0 mm2; maximum interference distance: 345.0±43.1 μm, 189.0±39.9 μm, 309.0 ± 46.8 μm; average interference distance: 130.0±15.7 μm, 64.0±10.6 μm, 130.0±21.9 μm. Statistically significant differences were found for the maximum interference distance and average interference distance (both p<0.05).
Conclusions: The functional occlusal surfaces for each form of mastication demonstrated interference with the functional surface of frontal/lateral mandibular translations. Thus, crown restorations of which the occlusal surfaces were adjusted and formed by frontal/lateral mandibular translations may interfere with mastication.
掲載誌名
Journal of Oral Health and Biosciences
ISSN
21896682
出版者
四国歯学会
31
1
開始ページ
39
終了ページ
48
並び順
39
発行日
2018-07-05
備考
内容要旨・審査要旨・論文本文の公開
本論文は,著者Toshinori Okawaの学位論文として提出され,学位審査・授与の対象となっている。
EDB ID
出版社版DOI
出版社版URL
フルテキストファイル
言語
eng
著者版フラグ
博士論文全文を含む
文科省報告番号
甲第3183号
学位記番号
甲口第440号
学位授与年月日
2018-03-23
学位名
博士(歯学)
学位授与機関
徳島大学
部局
歯学系
病院