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불소이온도입법과 일반 불소도포법 간의 우치 법랑질에 대한 내산성 비교

Other Titles
 Comparison of resistance to demineralization between the iontophoresis and the conventional fluoride application 
 김희은  ;  권호근  ;  김백일 
 Journal of Korean Academy of Oral Health (대한구강보건학회지), Vol.32(1) : 10-19, 2008 
Journal Title
 Journal of Korean Academy of Oral Health (대한구강보건학회지) 
Issue Date
conventioanl application ; demineralization ; fluoride ; iontophoresis
Objective: The aim of this study was to compare the effects on the resistance to demineralization by the iontophoresis and the conventional fluoride application (CFA) in vitro. Methods: Eighty four bovine enamel specimens were embedded in acrylic resin with the labial surfaces exposed. The specimens were divided into 3 groups: no fluoride treatment, CFA, and iontophoresis. The experimental groups were divided into 3 different subgroups (1.23% APF gel, 2% NaF gel, and 2% NaF solution). The specimens in the control group were not treated with fluoride and were placed in the remineralizing solution (RS) for 10 days. However, all the experimental groups were immersed in the RS for 2 days after the fluoride treatment for 4 minutes. This cycle was repeated 5 times. All the specimens were exposed to a pH-cycling model which consisted of demineralization (6 hours) and remineralization (18 hours) for 5 days. The Vickers surface micro-hardness number (VHN) of all the specimens was measured using microhardness tester and the specimen surfaces were observed by scanning electron microscope (SEM), confocal laser scanning microscope (CLSM). The results were analyzed using one-way ANOVA followed a Tukey' s multiple comparison at a significance level of 0.05 (SPSS Inc, Chicago, USA). Results: According to the fluoride application method, although iontophoresis groups showed higher VHN (difference in mean = 3.8±1.8) than those of the CFA groups, there were no significant differences between two method groups. After the modified pH-cycling, the 2% NaF solution with the iontophoresis group showed the best resistance to demineralization (p < 0.05). While 1.23% APF gel with the iontophoresis group showed the lowest resistance (p < 0.05). These results were also confirmed by SEM and CLSM. Conclusion: The fluoride iontophoresis method did not show any significant superiority to the conventional fluoride application in terms of the resistance to demineralization.
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2. College of Dentistry (치과대학) > Dept. of Preventive Dentistry and Public Oral Health (예방치과학교실) > 1. Journal Papers
Yonsei Authors
Kwon, Ho Keun(권호근)
Kim, Baek Il(김백일) ORCID logo https://orcid.org/0000-0001-8234-2327
Kim, Hee Eun(김희은)
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