New adhesives in Class V restorations under combined load and simulated dentinal fluid
| Autor: | Ivo Krejci, Felix Lutz, David Sägesser, Tobias Häusler |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Materials science
Body Fluids/physiology Dentistry Composite Resins Permanent/methods Statistics Nonparametric Dentin/physiology stomatognathic system Acid Etching Dental Materials Testing Dentin medicine Hydrostatic Pressure Animals Humans Nonparametric General Materials Science Bisphenol A-Glycidyl Methacrylate Horses Dentinal Fluid Dental Restoration Permanent General Dentistry Enamel paint business.industry Statistics Dental Bonding Maleates Dental Marginal Adaptation ddc:617.6 Body Fluids Resin Cements Dental Restoration stomatognathic diseases medicine.anatomical_structure Mechanics of Materials Evaluation Studies as Topic visual_art Dentin-Bonding Agents Acid Etching visual_art.visual_art_medium Dental Methacrylates Adhesive Horse serum business |
| Zdroj: | Dental Materials, Vol. 10, No 5 (1994) pp. 331-5 |
| ISSN: | 0109-5641 |
| Popis: | Objectives. This study compared the efficacy of three dentinal adhesives using the “all etch” technique (All-Bond 2, Bisco; Scotchbond MP, 3M Dental Products Co.; OptiBond, Kerr) with a dentinal adhesive which still uses phosphoric acid to condition enamel and a self-etching primer for dentin (A.R.T.-Bondm, Coltene/Whaledent). Methods. Eight V-shaped mixed Class V restorations were placed per group in extracted human premolars. The restorations were subjected to 1,200,000 mechanical occlusal cycles (max. force 49 N; frequency 1.7 Hz) and 3,000 simultaneous thermal cycles (5-50-5°C). Dentinal fluid was simulated using 1:3 diluted horse serum and fed into the pulp chamber both during restoration and loading. Percentages of “continuous margin” were assessed on SEM replicas of enamel and dentinal margins at 200x magnification immediately before and after stressing, respectively. Results. No significant differences were observed before stress between the materials either in enamel or in dentin. After stress, however, OptiBond and A.R.T.-Bond performed significantly better in dentin than the two other adhesives (Kruskal-Wallis, Mann-Whitney; p < 0.05). Although high initial values were observed, All-Bond 2 and Scotchbond MP were not stress-resistant under simulated physiological conditions. Significance. The predicted clinical potential of All-Bond 2 and Scotchbond MP is inferior to that of OptiBond and A.R.T.-Bond. |
| Databáze: | OpenAIRE |
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