REMINERALIZATION EFFECTS OF GLASS IONOMER RESTORATIONS ON ADJACENT INTERPOXIMAL-A MICROTOMOGRAPHIC STUDY

Lee, Hyeok-Sang; Lee, Sang-Dae; Kim, Jung-Wook; Kim, Chong-Chul; Hahn, Se-Hyun; Jang, Ki-Taeg

Journal of the Korean Academy of Pediatric Dentistry 2004;31(3):474-480.
Published online August 31, 2004.

REMINERALIZATION EFFECTS OF GLASS IONOMER RESTORATIONS ON ADJACENT INTERPOXIMAL-A MICROTOMOGRAPHIC STUDY

Hyeok-Sang Lee, Sang-Dae Lee, Jung-Wook Kim, Chong-Chul Kim, Se-Hyun Hahn, Ki-Taeg Jang

미세전산화 단층 촬영을 이용한 글라스 아이오노머 수복의 인접면 재광화 효과에 대한 연구

이혁상, 이상대, 김정욱, 김종철, 한세현, 장기택

서울대학교 치과대학 소아치과학교실 및 치학연구소

Correspondence: Ki-Taeg Jang,

Abstract

The purpose of this in vitro study was to compare the remineralizing effects of three glass ionomer cements (high filled glass ionomer cement, compomer, resin modified glass ionomer cement) with resin composite (control group) on incipient interproximal caries, and to assess long-term change of remineralization effect, in each material, evaluated by microtomography. Proximal restoration was simulated with tooth specimen and Glass Ionomer Cements. And each of these groups was placed into a closed container with artificial saliva at 37℃ and pH 7.0 for a time period of thirty days with constant circulation. At the end of thirty and sixty days, tomographic images were taken from these specimens with micro CT scanner. Materials used in this study were as follows. Group 1: Fuji IX GP (GC Corp., Tokyo, Japan) Group 2: Vitremer (3M ESPE, St. Paul, Minn., USA) Group 3: F2000 (3M ESPE, St. Paul, Minn., USA) Group 4: Z250 (3M ESPE, St. Paul, Minn., USA) Using density-measuring program, the micro-density of carious lesions on the specimens were measured. The mean density changes of each group were compared to the other groups to evaluate the effect of remineralization. The results were as follows: 1. The lesion density of all groups increased. 2. The mean density increase of Group 1, 2, 3 were higher than that of Group 4 every month(p<0.05). 3. There were significant differences of density increase among glass ionomer group(Group 1, 2, 3).

Key Words: Glass ionomer cement, Interproximal caries, Remineralization, Microtomography