Analysis of marginal adaptation and sealing to enamel and dentin of four self-adhesive resin cements
- نوع فایل : کتاب
- زبان : انگلیسی
- مؤلف : Carina Maria Aschenbrenner & Reinhold Lang & Gerhard Handel & Michael Behr
- چاپ و سال / کشور: 2010
Description
This in vitro study compared the marginal adaptation of all-ceramic MOD-inlays luted to human molars with four self-adhesive resin cements. Thirty-two human third molars were randomly assigned to four test groups (n=8 per group). MOD cavities were prepared with approximal finishing lines in dentin and enamel. Allceramic Empress 2 inlays were luted with four selfadhesive cements (Clearfil SA, iCEM, Bifix SE, seT). Oral stress was simulated by 90 day storage in water as well as by thermal and mechanical loading (TCML, 1.2پ~106پ~50 N, 6,000پ~5پ‹/55پ‹, 1.6 Hz). The marginal fit was evaluated by scanning electron microscopy (SEM) and dye penetration. Data were analyzed with the ANOVA/Tukey's test (ƒ؟=0.05). The SEM investigation of the gingival cement margins (cement.tooth interface) showed values of perfect margin [percent] (means پ} SD) after simulated aging between 84پ} 9% and 95پ}5% for enamel and 80پ}9% and 92پ}3% for dentin. In enamel, seT showed significantly higher marginal integrity than iCEM after water storage and TCML (post hoc; p=0.011). Furthermore, the marginal adaptation of iCEM in enamel deteriorated by simulated aging (p=0.014, ANOVA). Mean values of dye penetration (percentage of dye entry into dentin) at the investigated restorations margins ranged between 3% and 8% for enamel and 12% and 22% for dentin. Clearfil SA, iCEM, and seT showed lower dye penetration in enamel than in dentin (Clearfil SA: p=0.013, iCEM: p=0.044, seT: p=0.003). The results suggest that the four self-adhesive luting agents investigated seem to successfully bond to dentin-restricted as well as to enamel-restricted cavities, predicting good clinical performance.
Clin Oral Invest DOI 10.1007/s00784-010-0501-z Received: 3 February 2010 / Accepted: 28 December 2010
