Development of an individual model for prediction of functional recovery after prosthodontic treatment

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K19129
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 57050:Prosthodontics-related
• Research Institution: Hiroshima University
• Principal Investigator: Mori Takahiro 広島大学, 病院(歯), 助教 (70760007)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 咀嚼能率 / 可撤性有床義歯 / 習慣性咀嚼側

Outline of Final Research Achievements

This study aimed to clarify the relationship of defect patterns in removable dentures with asymmetrical masticatory function and patients’ preferred chewing side. We enrolled 272 subjects (average age, 76.5 ± 5.3 years). Bite force and masticatory efficiency in each group showed a significant left-right difference only in the right distal-extension denture group. There was no significant difference in the percentage of the preferred chewing side between the no denture group and all other groups. The ratio of patients’ preferred chewing side comparing the right and left high-value groups in terms of bite force and masticatory efficiency showed significant differences. We identified a large difference between the left and right side with regard to masticatory function within the right distal-extension denture group.

Free Research Field

補綴歯科学

Academic Significance and Societal Importance of the Research Achievements

本研究の結果より，右側遊離端症例における咀嚼機能は左右差が大きいことが明らかになった．また，片側遊離端症例においては必ずしも非欠損側で咀嚼しているわけではなく，習慣性咀嚼側に欠損様式の違いが及ぼす影響は大きくない一方で，咀嚼機能の非対称性と習慣性咀嚼側は関連することが明らかになった．したがって，補綴治療による機能回復の個別化予測モデルには習慣性咀嚼側が大きく関与する可能性が示された．