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学科主题: 口腔医学
题名:
In vitro caries inhibition at the enamel margins of glass ionomer restoratives developed for the ART approach
作者: Smales, RJ; Gao, W
关键词: caries inhibition ; glass ionomer ; atraumatic restorative treatment
刊名: JOURNAL OF DENTISTRY
发表日期: 2000-05-01
卷: 28, 期:4, 页:249-256
收录类别: SCI
文章类型: Article
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
英文摘要:

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.

语种: 英语
WOS记录号: WOS:000086382800006
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/54853
Appears in Collections:北京大学口腔医学院_口腔修复科_期刊论文

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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

Recommended Citation:
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.
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