Fluoride release and recharge properties of six restorative materials
10.3760/cma.j.issn.1002-0098.2015.01.007
- VernacularTitle:六种牙齿充填修复材料的释氟与再充氟性能研究
- Author:
Yajie GUI
1
;
Xinyi ZHAO
;
Shibao LI
;
Lihui TANG
;
Xu GONG
Author Information
1. 第四军医大学口腔医学院口腔材料教研室军事口腔医学国家重点实验室
- Keywords:
Fluorides;
Composite resins;
Glass ionomer cements
- From:
Chinese Journal of Stomatology
2015;50(1):28-32
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the F-releasing and recharging properties of six dental restorative materials.Methods Disc specimens 10 mm in diameter and 1 mm in thickness were prepared from 6 different dental restorative materials:Fuji Ⅶ [glass ionomer cement(GIC)],Fuji lⅡ LC(light-curing,GIC),Beautifil(giomer),Compoglass F(compomer),Charisma(composite) and Experimental Ⅰ (a fluoride releasing composite),with 10 discs for each material.Specimens were dipped in 5 ml deionized water and Frelease was detected using a fluoride-specific ion electrode every day from 1-7 days and every three days from 8-28 days.On day 28,specimens were exposed to a fluoride foam for 4 min and then dipped in water,then the F-concentration was detected every day for a week.The specimens were exposed to fluoride foam and fluoride release was detected repeatedly for three times.Results All materials presented the highest F release on the first day after dipping and the F-release sharply decreased after 24 h and slowly decreased after 3 days.On the first day,Fuji Ⅶ presented the highest F-release[(99.68± 15.21) μg· cm-2· d-1],followed by Fuji Ⅱ LC[(37.12±1.67) μg·cm-2·d-1],Experimental Ⅰ [(22.93±1.53) μg·cm-2·d-1],Compoglass F[(15.28±0.70) μg· cm-2· d-1],Beautifil[(2.40±0.52) μg· cm-2· d-1] and Charisma[(0.11±0.02) μg· cm-2· d-1].Within 28 days of dipping,both Fuji Ⅶ and Fuji Ⅱ LC released more F-than other materials did(P＜0.05),followed by Compoglass F and Experimental Ⅰ,and Beautifil and Charisma released the least F-(P＜0.01).After Fuptake,all materials released the highest F-on the first day and presented sharply decrease after 24 h and slowly decrease after 2 days.On the first day after F-uptake,Fuji Ⅶ presented the highest F-release (＞40 μg· cm-2· d-1),much more than other materials(P＜0.01),followed by Fuji Ⅱ LC(＞25 μ.g· cm-2· d-1).Beautifil,Compoglass F and Experimental Ⅰ were close in F-release value(15-20 μg·cm-2· d-1),and Charisma showed the lowest F-release.Conclusions Two glass ionomers were shown to have highest capacity in F-release and uptake,followed by compomer and fluoride releasing composite.Composite demonstrated the lowest F-release and uptake and Giomer was comparable to composite in F-release and to compomer and fluoride releasing composite in F-uptake.
