Effects of methacryloyloxydecyl dihydrogen phosphate on bond durability of zirconia
10.3760/cma.j.issn.1002-0098.2020.01.006
- VernacularTitle: 磷酸酯单体对口腔氧化锆陶瓷粘接耐久性的影响
- Author:
Bingzhuo CHEN
1
;
Lu YANG
1
;
Hongliang MENG
1
;
Huaiqin ZHANG
1
;
Haifeng XIE
1
;
Chen CHEN
2
Author Information
1. Department of Prosthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University & Institute of Stomatology, Nanjing Medical University, Nanjing 210029, China
2. Department of Endodontics, Affiliated Hospital of Stomatology, Nanjing Medical University & Institute of Stomatology, Nanjing Medical University, Nanjing 210029, China
- Publication Type:Journal Article
- Keywords:
Phosphoric acid esters;
Dental porcelain;
Dental bonding;
Durability
- From:
Chinese Journal of Stomatology
2020;55(1):26-31
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evaluate the bond performance of primers, universal adhesives and self-adhesive resin cements containing methacryloyloxydecyl dihydrogen phosphate (MDP) to zirconia.
Methods:Two hundred and ten yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) plates were prepared and divided into seven groups according to each of six MDP-containing products and one MDP-free resin cement. Two primers, two universal adhesives and two self-adhesive resin cements were applied on the specimens after these specimens recived alumina air abrasion. The group of MDP-free resin cement was set as control. Each group contained 30 specimens. Y-TZP plates were bonded to resin composite to build resin bonding specimens, and half of these plates were stored in distilled water at 37 ℃ for 24 hours, the other half were stored for 12 months. Shear bond strength (SBS) test and fracture modes analysis were performed.
Results:The SBS values of all the experimental groups were above 9.51 MPa, which increased 24-hour values compared to the (5.04±0.50) MPa of the control group. Group using one of the self-adhesive resin cement yielded the highest SBS, (11.06±0.84) MPa. SBS of all groups decreased significantly compared to 24-hour SBS after aging (P<0.05), however, the SBS values of MDP-containing products groups can still be maintained above 7.44 MPa. Two self-adhesive cement groups and one of the universal adhesive group maintained higher SBS values, and the values were statistical different from those from the two primer groups (P<0.05) .
Conclusions:Different MDP-containing products have different effects on the bond durability of zirconia.
