2009 Fiscal Year Final Research Report

Why is Nursing Caries established ? ;From the Findings of Oral Flora in the Child with Glycogenosis type I.

Research Project

Project/Area Number	20791584
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Orthodontic/Pediatric dentistry
Research Institution	Nagasaki University
Principal Investigator	SATOH Kyoko Nagasaki University, 病院, 助教 (70404499)
Co-Investigator(Renkei-kenkyūsha)	FUJIWARA Taku 長崎大学, 大学院・医歯薬学総合研究科, 教授 (00228975) HOSHINO Tomonori 長崎大学, 病院, 講師 (00359960) SAITOU Kan 長崎大学, 病院, 助教 (40380852) NISHIGUTI Miyuki 長崎大学, 大学院・医歯薬学総合研究科, 助教 (10253676) KONISHI Ikuri 長崎大学, 病院, 助教 (00572380)
Project Period (FY)	2008 – 2009
Keywords	糖原病I型 / 哺乳齲蝕 / 口腔細菌叢
Research Abstract	In this study, Streptococcus mutans, which is cariogenic bacteria, was not detected, but Streptococcus gordonii was only isolated from the oral cavity of the glycogenosis type I child with nursing bottle caries. The reason was thought to be that S. mutans could not produce adhesive glucan from sucrose by her restricted intake of sugar. On the other hand, it was observed that the isolated S. gordonii strain possess low possibility of acid production and adhesion to smooth surface in the presence of starch that was her mainly taken carbohydrate. For this reason, it was suggested that the S. gordonii strain could not cause the nursing bottle caries in this case.

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