Effect of ammonium hexafluorosilicate application for arresting caries treatment on demineralized primary tooth enamel
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概要
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Ammonium hexafluorosilicate (AHF) has been applied to arrest caries without discoloration. The purpose of this study was to observe structural and elemental changes of demineralized and AHF applied primary tooth enamel. Enamel from the labial surface of 20 primary canines was divided into an unground side and ground side at the center of the tooth, and demineralized with 35% phosphoric acid for 6 min. The teeth were divided into 4 groups according to a 3-min application of AHF and 1 week of soaking in artificial saliva, as follows: group A (neither AHF nor saliva), group B (only saliva), group C (only AHF), and group D (AHF and saliva), and then subdivided according to whether the enamel was ground or unground. Specimens were analyzed with scanning electron microscopy (SEM) and energy dispersive X-ray spectrometry (EDS). The data were statistically analyzed using ANOVA and Fishers PLSD test at α = 0.05. In groups A and B, prism structures were seen, however, in groups C and D, enamel surfaces were covered with spherical particles. Ca/P ratio was significantly higher in groups C and D than in groups A and B. There was no significant difference between ground and unground enamel in the content of any element. The values for F, Na, Mg and Si persents and Ca/P ratio were significantly higher for the enamel surface than for points 10-30 µm beneath the surface. Results of this study suggest the possibility that AHF treatment arrests caries, although further study will be required to confirm this result. (J Oral Sci 55, 115-121, 2013)
著者
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Hosoya Yumiko
Department Of Cardiology Sakakibara Heart Institute Japan Research Promotion Society For Cardiovascu
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Miyazaki Masashi
Department of Operative Dentistry, Nihon University School of Dentistry
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Hidaka Kiyoshi
Department Of Biochemistry And Molecular Pathophysiology Faculty Of Medicine University Of Occupatio
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Miyazaki Masashi
Department Of Internal Medicine 1 Sinshu University Medical School
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INOUE Takashi
Department of Agricultural Chemistry, Faculty of Agriculture, The University of Tokyo
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R. Tay
Department of Endodontics, College of Dental Medicine, Georgia Health Sciences University
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Tadokoro Katsumi
Oral Health Science Center, Tokyo Dental College
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Otani Hideji
Otani Dental Clinic
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Hidaka Kiyoshi
Department of Pediatric Dentistry, Course of Medical and Dental Science, Nagasaki University Graduate School of Biomedical Sciences
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