Shortened dental arches: Effects of implant-supported fixed partial dentures on second molars

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K09986
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 57050:Prosthodontics-related
• Research Institution: Showa University
• Principal Investigator: Abe Yuka 昭和大学, 歯学部, 講師 (80614156)
• Co-Investigator(Kenkyū-buntansha): 横山 紗和子 昭和大学, 歯学部, 兼任講師 (10431925)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: 短縮歯列 / インプラント

Outline of Final Research Achievements

The study was conducted with the aim of elucidating the effects of treatment intervention with implant-supported fixed partial dentures (IFPDs) and treatment selection factors for patients with unilateral shortened dental arches (SDA). Data collection on the Oral Health Impact Profile (OHIP) as a measure of oral health-related quality of life and masticatory function tests were conducted. The results suggested that IFPD treatment improves oral health-related QoL and objective masticatory function in SDA patients missing single second molar as well as in those with missing two adjacent molars. It was also suggested that sex (male), subjective poor masticatory function and minor psychosocial influences were associated with the choice of IFPD treatment in SDA patients with missing single second molar.

Free Research Field

補綴歯科学

Academic Significance and Societal Importance of the Research Achievements

本研究では、上下顎の左右いずれかの大臼歯を欠損した片側性短縮歯列患者に対し、固定性インプラント補綴治療介入の効果を検討した。その結果、固定性インプラント補綴治療は短縮歯列患者の口腔関連のQoLおよび客観的な咀嚼機能を有意に改善することが示唆された。このことは、歯の喪失後に口腔機能の低下を自覚する短縮歯列患者に対して、固定性インプラント補綴治療は有効な治療の選択肢となり得ることを示すものである。