41709
document
Enamel and dentin bond strength following gaseous ozone application . PURPOSE To evaluate the effects of gaseous ozone application on enamel and dentin bond strength produced by two self-etching adhesive systems . MATERIALS AND METHODS The shear bond strength test was conducted to assess adhesion on enamel ( protocol 1 ) , while the microtensile bond strength test was performed on dentin ( protocol 2 ) . Protocol 1 : 96 bovine incisors were randomly divided into 4 groups , and enamel surfaces were bonded in accordance with the following treatments : ( 1E ) ozone + Clearfil Protect Bond ; ( 2E ) Clearfil Protect Bond ( control ) ; ( 3E ) ozone + Xeno III ; ( 4E ) Xeno III ( control ) . Ozone gas was applied for 80 s. Shear bond strength was measured with a universal testing machine . Protocol 2 : 40 noncarious human molars were selected . Middle/deep dentin was exposed and bonded in accordance with the following treatments : ( 1D ) ozone+Clearfil Protect Bond ; ( 2D ) Clearfil Protect Bond ( control ) ; ( 3D ) ozone+Xeno III ( 4D ) Xeno III ( control ) . Four-mm-thick buildups were built on the adhesives , then specimens were sectioned in accordance with the nontrimming technique . Specimens were stressed until failure occurred , and failure modes were analyzed . Shear bond and microtensile bond strength data were analyzed using two-way ANOVA and Tukey 's post-hoc test . RESULTS No statistical differences were found between ozone treated specimens and controls , neither on enamel nor on dentin irrespective of the tested adhesive . Clearfil Protect Bond showed higher bond strength to enamel than Xeno III , irrespective of the ozone treatment ( p < 0.05 ) . CONCLUSION The use of ozone gas to disinfect the cavity before placing a restoration had no influence on immediate enamel and dentin bond strength .
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Intervention_Pharmacological
gaseous ozone application
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Intervention_Pharmacological
gaseous ozone application
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Intervention_Pharmacological
( 1E ) ozone
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Intervention_Pharmacological
ozone + Xeno III
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Intervention_Pharmacological
Xeno III ( control )
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Intervention_Pharmacological
Ozone gas
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Intervention_Pharmacological
( 1D ) ozone+Clearfil Protect Bond
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Intervention_Pharmacological
( 2D ) Clearfil Protect Bond ( control
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Intervention_Pharmacological
ozone+Xeno III ( 4D ) Xeno III ( control )
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Intervention_Pharmacological
Xeno III
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Intervention_Control
ozone treatment
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Intervention_Pharmacological
ozone gas
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Outcome_Physical
Shear bond and microtensile bond strength data
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Outcome_Physical
enamel
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Outcome_Physical
dentin
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Outcome_Physical
bond strength
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Participant_Sample-size
96
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Participant_Sample-size
40