Year : 2023

Volume : Volume 14

Issue : Issue 2

Address for correspondence :
Dr. Trishala Patel
dr.trishala.patel@gmail.com

Abstract

Background: Improvements in the chemical formulation of dentin bonding agents from no etch to total etch (fourth- and fifth-generation)
to more recent self-etch systems (sixth-, seventh-, and eighth-generation) have led to a revolution in dentistry, placing these adhesives on
the front page. This study, compares the shear bond strength of seventh- and eighth- generation bonding agents between lithium disilicate
veneers and natural teeth. Materials and Methods: Twenty extracted premolars were prepared to be restored with lithium disilicate veneers.
The specimens were randomly divided into two groups: Group A (seventh- generation) and Group B (eighth-generation) where seventh- and
eighth-generation bonding agents were, respectively, applied on the prepared teeth surfaces in each group on which lithium disilicate veneers
were luted with resin cement. All the specimens were subjected to ageing for 500 cycles replicating 45 days of intraoral use. Ageing was
done at 5°C and 500°C temperatures. Shear load was applied at 0.5 mm/min until bonding failure occurred following which bond strength
was calculated using a universal testing machine. The result was tabulated and statistically analyzed. Results: The result revealed that there
was a statistically significant difference in the value of shear bond strength in two groups. Conclusion: The eighth-generation bonding agent
showed higher shear bond strength when compared to seventh-generation bonding agent.