|In vitro caries inhibition at the enamel margins of glass ionomer restoratives developed for the ART approach|
|Smales, RJ; Gao, W|
|关键词||Caries Inhibition Glass Ionomer Atraumatic Restorative Treatment|
|刊名||JOURNAL OF DENTISTRY|
|WOS标题词||Science & Technology|
|类目[WOS]||Dentistry, Oral Surgery & Medicine|
|研究领域[WOS]||Dentistry, Oral Surgery & Medicine|
|关键词[WOS]||FLUORIDE-CONTAINING MATERIALS ; CLASS-II RESTORATIONS ; IN-VITRO ; SECONDARY CARIES ; FUJI-IX ; RELEASE ; CEMENTS ; LESIONS|
Objectives: To assess the ability of conventional glass ionomer cements manufactured specifically for the atraumatic restorative treatment (ART) approach to inhibit the in vitro demineralization of enamel.
Methods: Twenty-four sound permanent premolar teeth, extracted for orthodontic reasons, had cervical cavities (4 x 2 x 1.5 mm(3)) prepared in enamel. These were restored with Fuji IX, Fuji IX GP, Ketac-Molar and Compoglass, and then thermocycled 300 times between 5-55 degrees C before being placed in a demineralizing solution (0.1 M lactic acid with 1 g/l dissolved hydroxyapatite at pH 4.7) for four weeks. Buccolingual planoparallel sections were cut axially through the restorations, and subsequently lapped to approximately 100 mu m thickness. The sections were examined with a polarized light microscope, and lesion measurements made using image analysis software. ANOVA and coefficients of variance were used to compare the findings.
Results: Compoglass and Ketac-Molar showed significantly less surface erosion than did the other two cements (p < 0.0001). Inhibition of enamel demineralization immediately adjacent to the restoration margins was more frequent with the glass ionomer cements (20.5-25.0%) than with Compoglass (13.0%). However, the widths of the inhibition zones varied between materials and sites.
Conclusions: Fluoride ion release from the restorative materials afforded some degree of protection to the adjacent enamel against in vitro demineralization. (C) 2000 Elsevier Science Ltd. All rights reserved.
|作者单位||1.Univ Hong Kong, Prince Philip Dent Hosp, Hong Kong, Hong Kong, Peoples R China|
2.Beijing Med Univ, Sch Stomatol, Dept Prosthodont, Beijing 100081, Peoples R China
|Smales, RJ,Gao, W. In vitro caries inhibition at the enamel margins of glass ionomer restoratives developed for the ART approach[J]. JOURNAL OF DENTISTRY,2000,28(4):249-256.|
|APA||Smales, RJ,&Gao, W.(2000).In vitro caries inhibition at the enamel margins of glass ionomer restoratives developed for the ART approach.JOURNAL OF DENTISTRY,28(4),249-256.|
|MLA||Smales, RJ,et al."In vitro caries inhibition at the enamel margins of glass ionomer restoratives developed for the ART approach".JOURNAL OF DENTISTRY 28.4(2000):249-256.|