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KMID : 0354619950070010187
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Journal Dankook Dental Research Institute
1995 Volume.7 No. 1 p.187 ~ p.200
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A comparative study on the amount of fluoride release from three glass ionomers and the anticariogenic effect on the to enamel of the adjacent tooth after class Ⅱrestoration
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Abstract
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The purpose of Us study was evaluated for fluoride release of various kinds of glass ionomer filiing materials to deionized distilled water, Ole fluoride uptake and the anticafogenic effect on the adjacent tooth after class Ⅱ restoration with glass ionomer materials.
Ketac-Silver, Miracle-Mix and Dyract were used as restnrative material for this study.
Fluoride concenoation released to the solution from discs made of the above mantioned selected measured dsily 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 reaeased fluoride absorbed by the enamel the adjacent tooth, and the anticariogenic effect on it was measured and observed, respectively.
The results can be summarized as follw :
1. The largest amouut of fluoride was released in each group first day, and the amount decreascd 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 statistically sigrificant(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 signifcant 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 Cpouu Ⅰ (p<0.05).
4. In comparing lesion depth, all experimental groups decreased lesion depth than control group (p<0.O5). The decrease was greatest for Group Ⅱ and least for Group Ⅲ (p<0.05).
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