THE EFFECT OF TWO ADHESIVE PROMOTERS ON BOND STRENGTH OF ULTRA-TRANSLUCENT ZIRCONIA TO TWO RESIN CEMENTS. | ||||
| Ain Shams Dental Journal | ||||
| Article 7, Volume 23, Issue 3, September 2021, Page 25-34 PDF (648.83 K) | ||||
| Document Type: Original articles | ||||
| DOI: 10.21608/asdj.2022.132749.1118 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Amira Kamal Hafez  1; Soha Osama Nabih2
| ||||
| 124 Baron City Maadi ring road | ||||
| 2Fixed Prosthodontics, Ain shams University ,Cairo , EGYPT | ||||
| Abstract | ||||
| Statement of the problem: Due to their high crystal content and lack of glass, zirconia ceramics resist acid etching and chemical bonding with silane. More durable zirconia-resin cement bonding techniques require advancement. Objective: This study was conducted to investigate the effect of two adhesive promoter types and two resin cements on the shear bond strength of sandblasted ultra-translucent zirconia plates to resin cement. Materials and Methods: BruxZir anterior Zirconia blank was sliced to obtain forty-two ultra-translucent zirconia plates, Sintering to all plates was carried out according to manufacturer’s regulations. All the plates were sandblasted using 50 μm alumina particles. Plates were allocated into three groups according to the type of adhesive promoter: Group A: no primer, Group B: coated with zirconia primer, and Group C: coated with a universal bonding agent. One plate from each group was examined under a Scanning Electron Microscope. Half of the plates in each group were bonded to conventional composite resin cement while the other half were bonded to Phosphate containing one following the manufacturers’ instructions. All plates were stored in an incubator containing distilled water at 37 ºc for 1 week. The shear bond strength test was carried out using a universal testing machine. Data obtained were analyzed statistically. Results: The application of Z prime and bonding to conventional resin cement resulted in the highest shear bond strength value (19.58 MPa) followed by no primer application and bonding to phosphate resin cement (15.8 MPa). Universal bonding agent showed the lowest bond strength value with both resin cements. Conclusions: Application of MDP-containing primer had the highest bond strength with conventional resin cement while the universal adhesive showed weak bond strength with both resin cements. Resin cements reacted almost equally when used directly on zirconia without primer application. | ||||
| Keywords | ||||
| Adhesive promoters; Ultra-translucent zirconia; Resin cement | ||||
|
Statistics Article View: 113 PDF Download: 141 |
||||
