Shear bond strength of adhesive systems to enamel and dentin. Thermocycling influence
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Data
2005-08-01
Autores
Dos Santos, Patrícia Aleixo
Garcia, Patricia Petromilli Nordi Sasso [UNESP]
Palma-Dibb, Regina Guenka
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Resumo
Objectives: The purpose of the this study was to evaluate the influence of thermocycling on shear bond strength on bovine enamel and dentin surfaces of different adhesive systems. Methods: Thirty sound bovine incisors were sectioned in mesiodistal and inciso-cervical direction obtaining 60 incisal surfaces (enamel) and 60 cervical surfaces (dentin). Specimens were randomly assigned to 3 groups of equal size (n = 40), according to the adhesive system used: I-Single Bond; II-Prime & Bond NT/NRC; III-One Coat Bond. After 24-h storage in distilled water at 37 o C, each main group was divided into two subgroups: A- specimens tested after 24 h storage in distilled water at 37°C; B - specimens submitted to thermocycling (500 cycles). Shear bond strength tests were performed. Data were submitted to ANOVA and Tukey test. Results: Means (MPa) of different groups were: I-AE-16.96, AD-17.46; BE-21.60, BD-12.79; II-AE-17.20, AD-11.93; BE-20.67, BD-13.94; III-AE-25.66, AD-17.53; BE-24.20, BD-19.38. Significance: Thermocycling did not influence significantly the shear bond strength of the tested adhesive systems; enamel was the dental substrate that showed larger adhesive strength; One Coat Bond system showed the best adhesive strength averages regardless of substrate or thermocycling. © 2005 Springer Science + Business Media, Inc.
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Adhesives, Bond strength (chemical), Chemical bonds, Distillation, Surfaces, Thermal cycling, Adhesive systems, Bovine enamel, Mesiodistal, Enamels, water, adhesion, analysis of variance, animal tissue, chemical bond, dentin, enamel, incisor, material coating, nonhuman, priority journal, randomization, shear strength, storage temperature, surface property, temperature, Adhesiveness, Animals, Biocompatible Materials, Cattle, Dental Cements, Dental Enamel, Dentin, Incisor, Materials Testing, Periodicity, Shear Strength, Temperature, Bovinae
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Journal of Materials Science: Materials in Medicine, v. 16, n. 8, p. 727-732, 2005.