Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
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THE INFLUENCE OF THE DEGREE OF SATURATION OF ACIDULATED BUFFER SOLUTIONS IN THE ROOT DENTIN DEMINERALIZATION

유기산 완충용액의 포화도가 상아질의 탈회에 미치는 영향

  • Kang Hye-Sil (Department of Conservative Dentistry, College of Dentistry, Yonsei University) ;
  • Lee Chan-Young (Department of Conservative Dentistry, College of Dentistry, Yonsei University)
  • 강혜실 (연세대학교 치과대학 보존학교실) ;
  • 이찬영 (연세대학교 치과대학 보존학교실)
  • Published : 2004.09.01
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Abstract

The purpose of this study is to compare and to evaluate the effects of the degree of saturation on the progression of artificial root caries lesion. A total of 8 human premolars without any defects and cracks selected and the cementum were removed and the teeth were cleaned with ultrasonic device and pumice without fluoride. Each tooth was sectioned into 6 pieces and they were ground with #800 sandpaper until they had a thickness of 200pm. Specimens were applied with nail vanish except for the 2-3 mm window area after application of bonding agent. Under the constant pH, the specimens were divided into 6 groups (degree of saturation: 0.1415, 0.1503, 0.1597, 0.1676, 0.1771. 0.1977). Each group was immersed in acid buffer solution for 1. 2, 3, 5 days under controlled temperature ($25^{\circ}C$) and imbibed in water and examined using the polarizing microscope. The results were as follows 1. Although the degree of saturation of demineralization solution decreased, the depth of penetration in the dentin was constant. 2. Erosion was observed on the surface of all the teeth in the group I, II. In the group III, IV, V, surfaces were not changed. The teeth in the group VI showed the more mineralized surface but not the shape of the dentinal tubules distinctively. 3. In all groups, the lesion progressed rapidly at the first day of the experiment, but increased gradually as time elapsed.

Keywords

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