2023 Fiscal Year Final Research Report

Analysis of living environment factors for decay in infancy and influence on whole-body development and growth

Research Project

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Project/Area Number	20K10419
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Multi-year Fund
Section	一般
Review Section	Basic Section 58010:Medical management and medical sociology-related
Research Institution	Osaka Dental University
Principal Investigator	JIN Koichiro 大阪歯科大学, 医療保健学部, 教授 (00454562)
Co-Investigator(Kenkyū-buntansha)	中塚美智子大阪歯科大学, 医療保健学部, 教授 (70368158) 濱島淑恵大阪公立大学, 大学院現代システム・科学研究科, 准教授 (30321269) 芦田麗子大阪歯科大学, 医療保健学部, 講師 (40319455) 梶貢三子大阪歯科大学, 医療保健学部, 准教授 (80848383)
Project Period (FY)	2020-04-01 – 2024-03-31
Keywords	口腔崩壊 / 乳歯列期 / 家庭環境
Outline of Final Research Achievements	The results of this study showed that 3.5% (77 people) of the subjects had caries in 3 or more untreated teeth, and 0.4% (9 people) had caries in 10 or more teeth. It was suggested that the foundation for oral decay may already begin in early childhood. It was also found that as the number of cavities increases, the amount of food that can be eaten increases, and the proportion of people who become unwell or have difficulty concentrating increases. The family environment of young children, where caries is common, is due to factors such as single parents and dual-income families. In addition, 6.8% of parents lacked understanding of their children's oral health. It was suggested that the home environment may have an influence on caries in primary teeth. In order to protect the oral health of young children, cooperation between dental medical institutions, families, and kindergartens is essential.
Free Research Field	社会歯科学
Academic Significance and Societal Importance of the Research Achievements	わが国では、学校で要受診勧告を受けた児童・生徒の約60％の者は歯科医療機関を受診しておらず、その未受診者の中に「口腔が崩壊した状態」を有する子ども達が潜在的に認められる。しかしながら、全身の成長発育が著しい乳幼児期（乳歯列期）における「口腔崩壊」の実態把握や検証については、先行研究が無く、現在まで実施されていないと言っても過言ではない。本研究により「口腔崩壊」の実態を把握し、その全身への影響について明らかにすることができれば、乳幼児期における子ども達の口腔と全身の健康を守るための貴重なエビデンスとなり、「口腔崩壊」を防ぐ効果的な対策・指針を策定するための基礎資料となり得ることが期待される。