Abstract
This study attempted to investigate the effect of sandblasting and H2O2 treatments on the microshear bond strength of two commercially available resin cements. A total of 90 cube-shaped specimens of commercially pure titanium (cp-Ti) were divided into two groups of Panavia and MHA cements (n = 45). Samples of the Panavia group were randomly divided into three subgroups of 15 samples, including subgroups (no treatment, aluminum oxide sandblasting, and immersion in 35% hydrogen peroxide solution with halogen light). Once the treatment was completed, Panavia V5 was applied on the cp-Ti surface by a Tygon tube. The 45 specimens of the MHA cement group were randomly divided into three subgroups (n = 15) similarly to the Panavia group. Then, the MHA was applied on the surface of cp-Ti. A universal testing machine was used to measure and examine the microshear bond strength of cement to cp-Ti subsequent to the step of thermocycling. According to results, in the Panavia cement group, the SBS of sandblasting treatment was significantly higher than that of the H2O2 treatment subgroup (p < 0.05), which displayed a significantly higher SBS than that of the no-treatment subgroup (p < 0.001). In regard to the MHA group, the SBS of the H2O2 treatment subgroup was significantly lower than that of the sandblasting treatment subgroup (p < 0.001), whereas there were no significant differences between the SBS of the no treatment and H2O2 treatment subgroups (p = 0.35). Considering the comparison between Panavia and MHA cases, there were no significant differences observed among the no-treatment subgroups (p = 0.34), as well as the sandblasting treatment subgroups (p = 0.67), while the SBS of the H2O2 treatment subgroup in Panavia cement was higher than that of the H2O2 subgroup in MHA cement (p < 0.001). In conclusion, in both Panavia V5 and MHA cements, sandblasting treatment could improve the bond strength between the titanium surface. However, H2O2 treatment proved to be capable of enhancing the bond strength of Panavia V5 cement without causing any positive effects on the bond strength of MHA cement.
Highlights
Dental implants are a popular treatment option for the replacement of missing teeth in patients
There are reports on the high survival rates of titanium abutments due to their excellent mechanical and biocompatible properties [4], its application with a thin gingival biotype results in shining a greyish hue toward the surrounding soft tissues [5]. This matter was attempted to be overcome through the introduction of hybrid abutment, which consisted of a titanium insert along with a zirconia or lithium disilicate ceramic component [6]
We considered the application of the two resin cements of Panavia V5 (Kuraray Noritake Dental Inc., Okayama, Japan) and MultiLink Hybrid-Abutment (MHA) (Ivoclar Vivadent, Schaan, Liechtenstein) (Table 1)
Summary
Dental implants are a popular treatment option for the replacement of missing teeth in patients. There are reports on the high survival rates of titanium abutments due to their excellent mechanical and biocompatible properties [4], its application with a thin gingival biotype results in shining a greyish hue toward the surrounding soft tissues [5]. This matter was attempted to be overcome through the introduction of hybrid abutment, which consisted of a titanium insert along with a zirconia or lithium disilicate ceramic component [6]
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