지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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The aim of this study was to compare the effects on the resistance to demineralization by the frequency and method of fluoride application in vitro. ninety-one human enamel specimens were embedded in acrylic resin with the labial surfaces exposes. The specimens were divided into 7 groups; (1) non-treated; (2) 1.23% APF gel 1 time; (3) 2%NaF sol 1 time; (4) 2% NaF sol iontophoresis 1 time; (5) 1.23% APF gel 4 time; (6) 2% NaF sol 4 time; (7) 2% NaF sol iontophoresis 4 time. All the groups were immersed in the remineralizing solution (RS) before baseline and divided into 7test groups of 13 specimens each. 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 of all the specimens was measured using microhardness tester and the specimen surfaces were observed by scanning electron microscope (SEM). The results were analyzed using one-way ANOVA followed a Tukey's multiple comparison at a significance level of 0.05. The group 7 showed higher level of microhardness after Fluoride application. The group 1showed lowest level of microhardness but group 7 showed higher level of microhardness after pH-cycling model, there were significant differences between groups. After the modified pH-cycling, the 2% NaF solution with the iontophoresis group showed the best resistance to demineralization(p<0.05). These results were also confirmed by SEM. The fluoride iontophoresis method was the most effective of the regimens in increasing the acid resistance of the enamel.
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참고문헌 (53)
참고문헌 신청
Brudevold F / 1968 / An enamel biopsy method for determination of fluoride in human teeth / Arch Oral Biol 13(8):877~885
Cruz R / 1992 / Acquisition of alkali-soluble fluoride by enamel through treatment with NaF-containing toothpastes in vitro / Scand J Dent Res 100(2):81~87
Yamazaki H / 2008 / Enhanced enamel remineralization under acidic conditions in vitro / J Dent Res 87(6):569~574
O'Reilly MM / 1987 / Demineralization and remineralization around orthodontic appliances:an in vivo study / Am J Orthod Dentofacial Orthop 92(1):33~40
Ernest Newburn / 2001 / Topical fuorides in caries prevention and management:a north American perspective / J Dent Educ 65(10):1078~1083
Cruz R / 1992 / Acquisition of alkali-soluble fluoride by enamel through treatment with NaF-containing toothpastes in vitro / Scand J Dent Res 100(2):81~87
Yamazaki H / 2008 / Enhanced enamel remineralization under acidic conditions in vitro / J Dent Res 87(6):569~574
O'Reilly MM / 1987 / Demineralization and remineralization around orthodontic appliances:an in vivo study / Am J Orthod Dentofacial Orthop 92(1):33~40
Ernest Newburn / 2001 / Topical fuorides in caries prevention and management:a north American perspective / J Dent Educ 65(10):1078~1083
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