- European Annals of Dental Sciences
- Cilt: 50 Sayı: 3
- Effect of Resin Infiltration and Various Etching Techniques on the Bond Strength of Sound and Demine...
Effect of Resin Infiltration and Various Etching Techniques on the Bond Strength of Sound and Demineralized Enamel
Authors : Zümrüt Ceren Özduman, Duygu Tuncer
Pages : 126-132
Doi:10.52037/eads.2023.0029
View : 21 | Download : 50
Publication Date : 2023-12-31
Article Type : Research
Abstract :Purpose: The objective was to assess the effect of various etching techniques on the shear bond strength(SBS) of resin infiltrated sound/ demineralized enamel. Materials and methods: A total of 180 extracted human upper incisors\' enamel surfaces were utilized. Half of these specimens underwent artificial demineralization, which involved exposing to an acidic buffer with a pH of 4.8(14 days). The remaining half of the specimens were kept in their original sound condition. Subsequently, both the sound/ demineralized specimens were divided into 6 groups according to the presence (I)/absence (NI) of resin infiltrant and etching methods (35% phosphoric acid (PA), 9% hydrofluoric acid (HFA), and Er,Cr:YSGG laser(L) (n=15): Following different etching procedures, an etch-and-rinse adhesive system was used, before the application of a nanohybrid composite to the enamel surfaces. Then all specimens were submitted to SBS test (MPa). three-way ANOVA and Bonferroni test were used for statistical analysis(p=0.05). Results: PA showed the highest SBS in the I groups compared with L and HFA groups, both in demineralized and sound enamel (p<0.05). On sound enamel, L showed higher SBS than HFA (p<0.05). On demineralized enamel, L showed similar values with HFA(p>0.05). In the NI groups, L showed similar SBS to HFA on both demineralized and sound enamel(p>0.05). Conclusion:Resin-infiltrated enamel can be etched by 35% phosphoric acid without jeopardize bond strength.Keywords : resin infiltration, shear bond strength, etching, laser, composite resin