Journal of Oral Research and Review

ORIGINAL ARTICLE
Year
: 2021  |  Volume : 13  |  Issue : 2  |  Page : 86--93

Effect of thermocycling on shear bond strength of cemented zirconia-reinforced lithium silicate (Celtra Duo)


Kamilia Faisal Abdulkader1, Lamia Sayed Kheiralla2, Gihan Abd Elhady Elnaggar2 
1 Department of Fixed Prosthodontic, Cairo University, Giza, Egypt
2 Department Fixed Prosthodontics, Faculty of Dentistry, Cairo University, Giza, Egypt

Correspondence Address:
Kamilia Faisal Abdulkader
Department of Fixed Prosthodontic, Cairo University, Giza
Egypt

Purpose: The aim of the present in vitro study is to evaluate the effect of thermocycling on the shear bond strength (SBS) of cemented zirconia-reinforced lithium silicate (ZLS) discs (Celtra Duo). Materials and Methods: Thirty-six Celtra Duo ceramic discs cemented (n = 36) to composites discs background (Master dent) by adhesive resin cement (Biscem). The baseline group (n = 12) did not subject to thermocycling, the second group (n = 12) was subject to 2500 thermal cycle, and the third group was subject to 5000 thermal cycles, then SBS and the failure mode were evaluated. Results: There was a statistically significant difference between the groups (P = 0.001) where the value of SBS (Mpa) was significantly decreased in both 2500 thermocycling group (P = 0.021) and 5000 thermocycling group (P = 0.001) when compared with their corresponding level measured at baseline group. In addition, there was a significant decrease in bond strength of 5000 thermocycling group when compared with its corresponding value in the 2500 thermocycling group (P = 0.001). Conclusion: Based on the results of the present study and within the limitations of this in vitro study, it can be concluded that the SBS of cemented ZLS restorations will be decreased when samples are subjected to thermocycling to simulate the clinical situation.


How to cite this article:
Abdulkader KF, Kheiralla LS, Elhady Elnaggar GA. Effect of thermocycling on shear bond strength of cemented zirconia-reinforced lithium silicate (Celtra Duo).J Oral Res Rev 2021;13:86-93


How to cite this URL:
Abdulkader KF, Kheiralla LS, Elhady Elnaggar GA. Effect of thermocycling on shear bond strength of cemented zirconia-reinforced lithium silicate (Celtra Duo). J Oral Res Rev [serial online] 2021 [cited 2021 Dec 2 ];13:86-93
Available from: https://www.jorr.org/article.asp?issn=2249-4987;year=2021;volume=13;issue=2;spage=86;epage=93;aulast=Abdulkader;type=0