The Effects of Denture Quality on Reduction of Masticatory Muscle Cross-Sections in Complete Denture Wearers.

• Tanabe Tadaki

  Department of Removable Prosthodontics, School of Dentistry, Iwate Medical University

• Mushimoto Eiko

  Department of Removable Prosthodontics, School of Dentistry, Iwate Medical University

• Tanaka Hisatoshi

  Department of Removable Prosthodontics, School of Dentistry, Iwate Medical University

• Inoue Daiichi

  Department of Removable Prosthodontics, School of Dentistry, Iwate Medical University

• Endo Yoshiki

  Department of Removable Prosthodontics, School of Dentistry, Iwate Medical University

• Hase Takeshi

  Department of Removable Prosthodontics, School of Dentistry, Iwate Medical University

• Yamada Yoshio

  Department of Removable Prosthodontics, School of Dentistry, Iwate Medical University

Bibliographic Information

Other Title

• 義歯Ｑｕａｌｉｔｙが総義歯装着者のそしゃく筋断面積の減少に及ぼす因子

Abstract

The objective of this study was to determine whether denture quality might have an effect on masticatory muscle cross-section in the complete denture wearer.<BR>Seventy complete denture wearers were equally divided into a higher denture quality group (G 1) and a lower denture quality group (G 2) by using denture quality scale, described as 16 categories, which related to denture form, mandibular position, clinical findings, etc. The denture quality score for G 1 were significantly higher than G 2. MRI was used to analyze the masticatory muscle cross-section area. Masticatory muscle activity, during voluntary maximum clenching, was measured electromyography. Facial morphology was measured using cephalometric radiography. There was a significant reduction of the masticatory muscle cross-sections (masseter, temporalis posterior and medial pterygoid) as well as masticatory muscle activity (masseter, temporalis posterior) in G 2 (p > 0.05, ANOVA). G 1 showed a significant positive correlation between cross-section and masticatory muscle activity (r=0.393, p > 0.05), however, G 2 showed no correlation. In conclusion, denture quality was a significant factor in reduced masticatory muscle cross-sections and decreased muscle activity. In elderly edentulous patients, a complete denture with higher quality could help maintain masticatory muscle cross-section and activity.

Journal

• Nihon Hotetsu Shika Gakkai Zasshi

  Nihon Hotetsu Shika Gakkai Zasshi 43 (2), 312-320, 1999

  Japan Prosthodontic Society

Keywords

• denture quality
• complete denture wearer
• masticatory muscle cross-section
• masticatory muscle activity

Details

• CRID: 1390001204410410624
• NII Article ID: 10008172886
• NII Book ID: AN00197911
• DOI: 10.2186/jjps.43.312
• ISSN: 1883177X
• ISSN: 03895386
• Web Site: http://www.jstage.jst.go.jp/article/jjps1957/43/2/43_2_312/_pdf
• Web Site: https://search.jamas.or.jp/link/ui/1999217033
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed