The purpose of this study was evaluated for fluoride release of various kinds of glass ionomer filling materials to deionized distilled water, the fluoride uptake and the anticariogenic effect on the adjacent tooth after class Ⅱ restoration with gla...
The purpose of this study was evaluated for fluoride release of various kinds of glass ionomer filling materials to deionized distilled water, the fluoride uptake and the anticariogenic effect on the adjacent tooth after class Ⅱ restoration with glass ionomer materials.
Ketac-Silver, Miracle-Mix and Dyract were used as restorative material for this study.
Fluoride concentration released to the solution from discs made of the above mantioned selected materials were measured daily for the first seven days, and then weekly, on the on the 14th and the 21st day.
After class Ⅱ restoration with glass ionomer materials, the amount of released fluoride absorbed by the enamel of the adjacent tooth, and the anticariogenic effect on it was measured and observed, respectively.
The results can be summarized as follow :
1. The largest amount of fluoride was released in each group first day, and the amount decreased as time went on. Miracle-Mix released more fluoride than all of the other materials tested.
2. The difference in the amount of fluoride released by Groups Ⅰ and Ⅱ, Groups Ⅱ and Ⅲ, and Groups Ⅰ and Ⅲ was statistically significant(p<0.05), except that between Groups Ⅰ and Ⅲ on the first, second and third days.
3. The amount of fluoride absorbed by the adjacent enamel showed statistically significant difference each groups (p<0.05).
The fluoride uptake of Group Ⅰ was greater than that of Group Ⅲ, and Group Ⅱ, greater than that of Group Ⅰ(p<0.05).
4. In comparing lesion depth, all experimental groups decreased lesion depth than control group (p<0.05). The decrease was greatest for Group Ⅱ and least for Group Ⅲ (p<0.05).