Effect of blood contamination during adhesive restorative procedures on dentin-resin cement shear bond strength
Braz. j. oral sci
;
6(21): 1320-1325, Apr.-June 2007. ilus, tab
Article
in English
| LILACS, BBO
| ID: biblio-850533
ABSTRACT
The aim of this study was to evaluate the effect of dentin blood contamination during different steps of the restorative procedure on resin cement shear bond strength to dentin. Crows of 120 bovine incisors were prepared to obtain flat superficial dentin surfaces. Dentin was etched with phosphoricacid and contaminated with fresh blood for 10 seconds, before or after adhesive system application. Different treatments were tested in contaminated dentin, resulting on eight groups (N=15). Composite resin restorations (TPH Spectrum, Dentsply) were adhesively fixed (Excite, Ivoclar-Vivadent) withresin cement (Variolink 2, Ivoclar-Vivadent) and shear bond strength test (0.5 mm/min) was performed. Morphologic observations were carried out with scanning electron microscopy (SEM). Data (MPa) were submitted to one-way ANOVA following Tukey's test (p<0.05), showing that blood contamination during adhesive procedure negatively affects bond strength, and decontamination methods do not recover original bond strength. The negative effects of bloodcontamination on shear bond strength to dentin and resin cement were significant in all contaminated groups; none of the tested dentin treatment procedures resulted in higher bond strength irrespective of the moment on which blood contamination took place.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Blood
/
Dentin-Bonding Agents
/
Shear Strength
/
Dentin
/
Environmental Pollution
Limits:
Animals
Language:
English
Journal:
Braz. j. oral sci
Journal subject:
Dentistry
Year:
2007
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Federal University of Uberlândia/BR
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