Correlation between microtensile bond strength data and clinical outcome of Class V restorations.

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State: Public
Version: author
Serval ID
serval:BIB_C4D2FEECE4F3
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Correlation between microtensile bond strength data and clinical outcome of Class V restorations.
Journal
Dental Materials
Author(s)
Heintze S.D., Thunpithayakul C., Armstrong S.R., Rousson V.
ISSN
1879-0097 (Electronic)
ISSN-L
0109-5641
Publication state
Published
Issued date
2011
Peer-reviewed
Oui
Volume
27
Number
2
Pages
114-125
Language
english
Notes
Publication types: Journal Article
Abstract
OBJECTIVE: To determine if the results of resin-dentin microtensile bond strength (µTBS) is correlated with the outcome parameters of clinical studies on non-retentive Class V restorations.
METHODS: Resin-dentin µTBS data were obtained from one test center; the in vitro tests were all performed by the same operator. The µTBS testing was performed 8h after bonding and after 6 months of storing the specimens in water. Pre-test failures (PTFs) of specimens were included in the analysis, attributing them a value of 1MPa. Prospective clinical studies on cervical restorations (Class V) with an observation period of at least 18 months were searched in the literature. The clinical outcome variables were retention loss, marginal discoloration and marginal integrity. Furthermore, an index was formulated to be better able to compare the laboratory and clinical results. Estimates of adhesive effects in a linear mixed model were used to summarize the clinical performance of each adhesive between 12 and 36 months. Spearman correlations between these clinical performances and the µTBS values were calculated subsequently.
RESULTS: Thirty-six clinical studies with 15 adhesive/restorative systems for which µTBS data were also available were included in the statistical analysis. In general 3-step and 2-step etch-and-rinse systems showed higher bond strength values than the 2-step/3-step self-etching systems, which, however, produced higher values than the 1-step self-etching and the resin modified glass ionomer systems. Prolonged water storage of specimens resulted in a significant decrease of the mean bond strength values in 5 adhesive systems (Wilcoxon, p<0.05). There was a significant correlation between µTBS values both after 8h and 6 months of storage and marginal discoloration (r=0.54 and r=0.67, respectively). However, the same correlation was not found between µTBS values and the retention rate, clinical index or marginal integrity.
SIGNIFICANCE: As µTBS data of adhesive systems, especially after water storage for 6 months, showed a good correlation with marginal discoloration in short-term clinical Class V restorations, longitudinal clinical trials should explore whether early marginal staining is predictive for future retention loss in non-carious cervical restorations.
Pubmed
Web of science
Create date
01/03/2011 16:10
Last modification date
20/08/2019 15:40
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