Akademik Veri Yönetim Sistemi
10th Cons Euro, 22 - 24 Nisan 2021, ss.64, (Özet Bildiri)
Aim: During COVID-19 pandemic, use of different mouthwashes have been recomended to
reduce the viral load. Aim of this study is to compare the effect of different mouthwashes on
shear bond strength of a universal adhesive in regard to self-etch (SE) and etch and rinse (ER)
application modes.
Materials and Methods: 100 sound human maxillary central incisors were selected. Flat enamel
surfaces were obtained. Specimens were randomly assigned to 5 groups (n=20) [Control, 1.5%
hydrogen-peroxide(H2O2), 0.2% povidone-iodine (PVP-I), Listerine, Chlorhexidine (CHX)]. Then,
each group was divided into two subgroups according the application mode of the used
universal adhesive (Single Bond Universal) (n =10). After adhesive procedures, resin composite
was applied by a Teflon mold (2mm height, 2.4mm diameter) and light polymerized. Shear bond
strength was tested with a Universal testing machine after water storage for 24 h. The debonded
areas were examined for failure mode analysis with a stereomicroscope at 25×magnifications.
The data were statistically analyzed by two-way ANOVA and Bonferroni test (p<0.05).
Results: Etch and rinse application mode of the adhesive system led to higher shear bond strengths
than self-etch application mode, regardless of the preoperational antiseptic mouthwashes used
(p<0.001). The lowest shear bond strength values among all the tested groups were measured
for H2O2/SE group (3.77±1.37MPa). The control group (where no mouthwash was used) exhibited
the highest SBS values (26.43±4.35MPa) in SE mode (PVP-I/SE=8.70±1.92, Listerine/SE=9.99±2.90;
CHX/SE=17.67±4.37MPa) (p<0.05). PVP-I/ER group (24.04±5.01MPa) showed no significant
difference with H2O2, CHX, Listerine and control groups in ER mode (21.40±3.67, 28.30±6.03,
29.61±4.78, 31.48±7.45) (p>0.05). H2O2 presented lower shear bond strength (21.40±3.67MPa) than
other mouthwashes in ER mode (p<0.05). The adhesive failure mode was predominant for all
groups.
Conclusion: The antiseptic mouthwashes decreased the enamel bond strength of the universal
adhesive used in self-etch application mode, however only H2O2 reduced the enamel bond
strength in both application modes.
Keywords: hydrogen peroxide, mouthwash, povidone iodine, shear bond strength, chlorhexidine