- 著者
-
GOMEC Yavuz
DORTER Can
ERSEV Handan
GURAY EFES Begum
YILDIZ Esra
- 出版者
- 日本歯科理工学会
- 雑誌
- Dental materials journal (ISSN:02874547)
- 巻号頁・発行日
- vol.23, no.3, pp.429-435, 2004-09-01
- 参考文献数
- 47
- 被引用文献数
-
1
9
The aim of this <i>in vitro</i> study was to investigate if surface microhardness of Fuji IX GP, Vitremer, Dyract AP, and Prodigy is influenced by conditioning in aqueous solutions of lactic, orthophosphoric, citric, and acetic acids against bidistilled water (which was used as control). The pH values of acids used in this study were representative of dietary acids. All specimens were stored in bidistilled water for one week and then conditioned in the respective test solutions for another week. Citric (p<0.05) and acetic acids reduced, while lactic and orthophosphoric acids (p<0.05) increased the microhardness of both Fuji IX GP and Vitremer. On the other hand, microhardness of both Dyract AP and Prodigy was significantly reduced by all acidic media (p<0.05). The observed differences in the surface microhardness of various tooth-colored restorative materials conditioned in several media varied not only with the pH but also the nature of the acidic solution, and with the composition of the evaluated material.