Aschenbrenner, Carina Maria and Lang, Reinhold and Handel, Gerhard and Behr, Michael (2012) Analysis of marginal adaptation and sealing to enamel and dentin of four self-adhesive resin cements. CLINICAL ORAL INVESTIGATIONS, 16 (1). pp. 191-200. ISSN 1432-6981, 1436-3771
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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. All-ceramic Empress 2 inlays were luted with four self-adhesive 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, 1.2 x 10(6) x 50 N, 6,000x 5A degrees/55A degrees, 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 (alpha = 0.05). The SEM investigation of the gingival cement margins (cement-tooth interface) showed values of perfect margin [percent] (means +/- SD) after simulated aging between 84 +/- 9% and 95 +/- 5% for enamel and 80 +/- 9% and 92 +/- 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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | FIXED-PARTIAL DENTURES; LUTING AGENTS; MICROLEAKAGE; RESTORATIONS; INLAYS; PERMEABILITY; DEGRADATION; COMPOSITES; STRENGTH; SURVIVAL; Self-adhesive; Luting agents; Resin cements; Artificial aging; Adhesion; All-ceramic inlays |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Zahnärztliche Prothetik |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 20 May 2020 07:18 |
| Last Modified: | 20 May 2020 07:18 |
| URI: | https://pred.uni-regensburg.de/id/eprint/19338 |
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