Effects of different fluorides and their loading on the release properties of composite resin
- VernacularTitle:氟化物的种类及含量对复合树脂氟离子释放特性的影响
- Author:
Dong LI
;
Xinyi ZHAO
;
Weihua SONG
;
- Publication Type:Journal Article
- Keywords:
fluoride;
fluoride release;
composite resin;
infiltration and diffusion
- From:Journal of Third Military Medical University
2003;0(13):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the effects of different kinds of fluorides and their loading on the fluoride releasing characteristics of fluoride containing composite resins. Methods Two paste type of composite resin, containing NaF and K 2TiF 6 respectively, were prepared. The composite resins were based on Bis GMA/TEGDMA resin and loaded with fluoride at 5%, 10%, 15% and 20% by weight, and a non fluoridated composite resin was prepared as the control. Six standardized discs (6 mm?3 mm) were made of each material, and three discs of each material were stored in plastic vials containing 5 ml deionized water at 37 ℃ respectively and the others in artificial saliva. The water and the artificial saliva were changed every 24 hours. An ion selective electrode (9606BN Orion) connected to an ion analyzer (720A Orion) was used to determine the amount of fluoride released on days 8, 15, 22, 29 and 62. The data were analyzed using t tests. Results All of the fluoride containing materials demonstrated a higher fluoride release than that from non fluoride control materials. The composite resin containing NaF released significantly more fluoride than that of K 2TiF 6. All materials showed a significantly higher release of fluoride in water than in artificial saliva ( P
