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BibTeX
In vitro μTBS of one-bottle adhesive systems: Sound versus artificially-created caries-affected dentin
Journal of biomedical materials research. Part B, Applied biomaterials, 2008-07, Vol.86B (1), p.181-187
Erhardt, Maria Carolina G.
Rodrigues, José Augusto
Valentino, Thiago Assunção
Ritter, André Vicente
Pimenta, Luiz André Freire
2008
Details
Autor(en) / Beteiligte
Erhardt, Maria Carolina G.
Rodrigues, José Augusto
Valentino, Thiago Assunção
Ritter, André Vicente
Pimenta, Luiz André Freire
Titel
In vitro μTBS of one-bottle adhesive systems: Sound versus artificially-created caries-affected dentin
Ist Teil von
Journal of biomedical materials research. Part B, Applied biomaterials, 2008-07, Vol.86B (1), p.181-187
Ort / Verlag
Hoboken: Wiley Subscription Services, Inc., A Wiley Company
Erscheinungsjahr
2008
Link zum Volltext
Quelle
Wiley Online Library Journals Frontfile Complete
Beschreibungen/Notizen
This in vitro study aimed to evaluate a pH‐cycling model for simulation of caries‐affected dentin (CAD) surfaces, by comparing the bond strength of etch‐and‐rinse adhesive systems on sound and artificially‐created CAD. Dentin substrates with different mineral contents and morphological patterns were created by submitting buccal bovine dentin to the following treatments: (1) immersion in artificial saliva during the experimental period (sound dentin, SD), or (2) induction to a CAD condition by means of a dynamic pH‐cycling model (8 cycles, demineralization for 3 h followed by mineralization for 45 h). The bond strength of Excite or Prime and Bond NT adhesive systems was assessed using the microtensile bond strength (μTBS) test. Dentin microhardness was determined by cross‐sectional Knoop evaluations. Resin–dentin morphology after the treatments was examined by scanning electron microscopy. SD produced significantly higher μTBS than CAD for both adhesives evaluated, without differences between materials. CAD exhibited lower microhardness than SD. Morphological analysis showed marked distinctions between SD and CAD bonded interfaces. Under the conditions of this study, differences in morphological pattern and dentin mineral content may help to explain resin–dentin bond strengths. The proposed pH‐cycling model may be a suitable method to simulate CAD surfaces for bonding evaluations. © 2007 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2008
Sprache
Englisch
Identifikatoren
ISSN: 1552-4973
eISSN: 1552-4981
DOI: 10.1002/jbm.b.31004
Titel-ID: cdi_crossref_primary_10_1002_jbm_b_31004
Format
–
Schlagworte
bond strength
,
caries-affected dentin
,
etch-and-rinse
,
microtensile
,
pH cycling
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