The Effect of Water Aging on Shear Bond Strength of Pretreated Zirconia-Oxide Ceramics Bonded to Resin Cement – An In Vitro Study
| Autor: | Gupta Aishwarya, Alva Harshitha, M Subash, Shetty Jayakar |
|---|---|
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | RGUHS Journal of Medical Sciences. 12 |
| ISSN: | 2581-7248 2231-1947 |
| DOI: | 10.26463/rjms.12_3_8 |
| Popis: | Background and Aim Use of zirconia oxide based ceramic system has become increasingly popular in dentistry because of zirconiarsquos esthetic and mechanical properties and its biocompatibility. Success of ceramic esthetic restoration depends on achievement of high retention and fracture resistance after cementation. Micro chemical retention can be achieved by various surface treatments. There are reports stating that long term presence of moisture decreases the physical properties of material and increases the risk of failure. Aging leads to changes in behaviour of material weakening it and subsequently degrading the material. This study investigated the phenomenon of aging of zirconia-resin by thermocycling in order to assess the problems related to its use and effect on shear bond strength of zirconia by bonding with cement.Method Twelve zirconia discs were taken and were divided into three groups having four discs each. Five resin cylinders were built on each disc. Group A was sandblasted which served as control group. Group B was exposed to hot etching using methanol 800 mL 37 HCl 200 mL and Ferric chloride 2 gm at 100 degC. Group C involved applying a layer of zirconia primer. After surface treatment two discs from each group were exposed to 500 thermocycling cycles simulating the oral environment. The shear bond strength testing was done following this. One way ANOVA test and Tukeyrsquos Post Hoc analysis were performed.Result Zirconia primer showed the maximum strength with and without exposure to thermocycling.Conclusion Zirconia primer proved to be a more effective surface treatment.nbsp |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|