Dental insurance :
Date
1990
DOI
Authors
Poustchi-Amin, Farah
Version
OA Version
Citation
Abstract
The purpose of this study was to determine the effects of four parameters on the shear bond strength of Gluma, Prisma Universal Bond 2, Scotch Bond 2, and Tenure dentin adhesive systems.
Two hundred extracted human teeth provided individual samples of dentin which were randomly divided into four groups to evaluate changes in dentin attributable to aging, the effects of hydration, a comparison of manufacturer's primers to phosphoric acid as etchants, and the role played by the direction in which dentin is cut.
All samples were subjected to thermocycling and shear tests were carried out upon an Instron machine. A three way analysis of variance (ANOVA) was used to explore relationship between the several parameters. It revealed significint differences (p = 0.004) in shear bond strength as a function of dentin age and material. Transverse dentinal cut had significantly greater mean bonding strength than longitudinal cuts. The bond strength of none of the dentin adhesive systems was significantly affected by soaking in the water over time (p = 0.10). Nor did control samples of enamel reveal any significant effect (p = 0.43) of soaking upon bond strength. There was a significant relationship between the particular primer/etchant used and bonding material (p = 0.04) that was independent of the direction of dentinal tubules at the cut surface (p = 0.12).
Description
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Thesis (M.Sc.D.)--Boston University. Henry M. Goldman School of Graduate Dentistry, 1990 (Dental Public Health)
Bibliography: leaves 29-32.
Thesis (M.Sc.D.)--Boston University. Henry M. Goldman School of Graduate Dentistry, 1990 (Dental Public Health)
Bibliography: leaves 29-32.
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This work is protected by copyright. Downloading is restricted to the BU community. If you are the author of this work and would like to make it publicly available, please contact open-help@bu.edu.