Restorative Dentistry and Endodontics
- Volume 24 Issue 3
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- Pages.495-502
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- 1999
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- 2234-7658(pISSN)
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- 2234-7666(eISSN)
THE INFLUENCE OF pH ON THE FORMATION OF ARTIFICIAL ROOT CARIES IN ACID BUFFER SOLUTION
산 완충용액의 pH가 인공치근우식의 형성에 미치는 영향
- Oh, Hyun-Suk (Department of Conservative Dentistry, College of Dentistry, Yonsei University) ;
-
Kum, Kee-Yeon
(Department of Conservative Dentistry, College of Dentistry, Yonsei University) ;
- Ro, Byeng-Duck (Department of Conservative Dentistry, College of Dentistry, Yonsei University) ;
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Lee, Chan-Young
(Department of Conservative Dentistry, College of Dentistry, Yonsei University)
- 오현석 (연세대학교 치과대학 치과보존학교실) ;
-
금기연
(연세대학교 치과대학 치과보존학교실) ;
- 노병덕 (연세대학교 치과대학 치과보존학교실) ;
-
이찬영
(연세대학교 치과대학 치과보존학교실)
- Published : 1999.09.05
Abstract
Recently root caries is reported as an increasing oral disease Many researchers studied in vivo and in vitro enamel lesions but due to its peculiar structure and different chemical composition compared to the enamel, little effort has been made to root caries study. The purpose of this study is to compare and to evaluate the effect of pH on the progression of artificial root caries lesion. Under the constant degree of saturation, the specimens were divided into 4 groups(pH 4.3, 5.0, 5.5, 6.0). Each group was immersed in acid buffer solution for 1, 3, 5, 7 days and examined using the polarizing microscope. The results were as follows: 1. The body of the lesion in the dentin showed higher degree of positive birefringence compared to sound dentin. 2. The rate of progression of the lesion slowed as the pH increased. 3. In all groups, the lesion progressed rapidly at the initiation or the experiment but increased gradually as time elapsed. In conclusion, the study shows that the pH in the acid buffer solution influenced the rate of progression of the lesion in artificial root caries. Compared to the previous enamel study, the initial pattern of the lesion progressed rapidly and as time elapsed increased gradually.