Year : 2019

Volume : Volume 10

Issue : Issue 4

Address for correspondence :
Dr. Partik Gupta.
PartikGupta@gmail.com

Abstract

Background:  Zirconia, a high strength ceramic that has several properties such as esthetics and high functional demands thus making it popular amongst patients as well as dentists. The present study was conducted to compare the tensile bond strength of zirconia copings subjected to different surface treatment methods with different luting agents. Material and methods: The present study includes 80 intact extracted human maxillary premolar teeth. The eighty zirconia copings milled were divided into 4 groups, containing 20 specimens each. The copings of Groups A1 and A2 were etched with hydrofluoric acid (HF) and cemented with 10-MDP self-adhesive resin, and 4-META adhesive resin, respectively. The copings of Groups B1 and B2 were surface air abraded and cemented with 10MDP self-adhesive resin, and 4-META adhesive resin, respectively. The prepared tooth was cleaned thoroughly with pumice slurry, rinsed with a water spray, and air dried before the cementation. The cemented copings were subjected to tensile dislodgement with a crosshead speed of 0.5 mm/min in the universal testing machine. Data obtained were compiled on the MS Excel sheet. Statistical analysis was performed using the SPSS software, Version 21.0 at a significance level of 5% (P = 0.05). Results: The result showed that the highest mean bond strength values among the Groups A1 and A2 with HF acid surface treatment of zirconia copings was shown by 4-META adhesive resin. The highest mean bond strength values with air abrasion Groups B1 and B2 were exhibited by 10-MDP self-adhesive resin. The comparison between the Groups A1 and B1 where 10-MDP self-adhesive resin was used for cementing the zirconia copings, the mean bond strength values were significantly higher with air abraded surface treatment. In the Groups A2 and B2, where 4-META adhesive resin was used for cementing the zirconia copings, the highest mean bond strength value was exhibited by HF surface treatment Conclusion: This study concluded that when 10-MDP self-adhesive resin was used for cementing the zirconia copings, the mean bond strength values were significantly higher with air abraded surface treatment and  when 4-META adhesive resin was used for cementing the zirconia copings, the highest mean bond strength value was exhibited by HF surface treatment.

Keywords: air abraded, HF, zirconia, 10-methacryloyloxydecyl dihydrogen phosphate, 4-methacryloxyethyl trimellitic acid.