| Full text | |
| Author(s): |
Strazzi-Sahyon, Henrico B.
;
Bergamo, Edmara T. P.
;
Gierthmuehlen, Petra C.
;
Lopes, Adolfo C. O.
;
Alves, Larissa M. M.
;
Jalkh, Ernesto B. Benalcazar
;
Zahoui, Abbas
;
Coelho, Paulo G.
;
de Carvalho, Alexandre M.
;
Bonfante, Estevam A.
Total Authors: 10
|
| Document type: | Journal article |
| Source: | JOURNAL OF PROSTHETIC DENTISTRY; v. 130, n. 5, p. 8-pg., 2023-11-10. |
| Abstract | |
Statement of problem. The bonding of implant-supported prostheses is determined by abutment material, convergence angle, height, surface treatment, and luting agents. However, studies evaluating the bonding of luting agents to titanium base abutments with different heights under fatigue conditions are scarce.Purpose. The purpose of this in vitro study was to evaluate the retention of zirconia crowns bonded with different luting agents to titanium base abutments of different heights before and after fatigue testing.Material and methods. Zirconia crowns were designed, milled, and distributed into 4 experimental groups according to the luting agents (G-Multi Primer/G-Cem LinkForce [MP/GC] and Scotchbond Universal/RelyX Ultimate [SU/RU]) and titanium base abutment heights (2.5 mm and 4 mm) (n=10). Pull-out testing was performed in a universal testing machine at a crosshead speed of 1 mm/min until crown displacement. Fatigue testing was performed by an electric precision fatigue simulator (1x106 cycles; 100 N; and 15 Hz), followed by pull-out testing of fatigued specimens. Collected data were statistically evaluated by using a linear mixed model after post hoc comparisons by the least significant difference test (alpha=.05). Results. Luting agents, abutment heights, and fatigue influenced the bonding retention of zirconia crowns to titanium base abutments. SU/RU agents promoted higher pull-out compared with MP/GC for both abutment heights before and after fatigue. Higher abutment height increased pull-out regarding lower abutment height for SU/RU materials before and after fatigue testing. Although fatigue had no significant effect on the pull-out of MP/GC, lower bond retention was observed for SU/RU after fatigue, regardless of abutment height.Conclusions. Luting agent composition and the interaction with abutment height and fatigue influenced the retention of zirconia crowns to titanium base abutments. (J Prosthet Dent 2023;130:739.e1-e8) (AU) | |
| FAPESP's process: | 21/07440-2 - Graduated glass infiltration in an ultra-translucent zirconia (5Y-PSZ): synthesis, processing and characterization of physical and mechanical properties |
| Grantee: | Larissa Marcia Martins Alves |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 21/06730-7 - Towards sustainable zirconia recycled from milling waste and boosted by glass infiltration for restorative use, and of the development of strong, graded, and aging resistant multilayered zirconia blocks |
| Grantee: | Estevam Augusto Bonfante |
| Support Opportunities: | Research Grants - Young Investigators Grants - Phase 2 |
| FAPESP's process: | 12/19078-7 - Development and processing of Al2O3-ZrO2 translucent composite for CAD/CAM monolithic prostheses: the effect of aging on biaxial flexural strength |
| Grantee: | Estevam Augusto Bonfante |
| Support Opportunities: | Research Grants - Young Investigators Grants |
| FAPESP's process: | 19/14798-0 - Development of pre-sintered ZTA 80% Al2O3/20% ZrO2 composite blocks for milling in CAD/CAM system |
| Grantee: | Adolfo Coelho de Oliveira Lopes |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 16/18818-8 - Multi-User Equipment approved in grant 2012/19078-7: ElectroPuls E3000 Linear-Torsion All-Electric dynamic test instrument package |
| Grantee: | Estevam Augusto Bonfante |
| Support Opportunities: | Multi-user Equipment Program |
| FAPESP's process: | 19/08693-1 - Experimental glass-infiltrated alumina-zirconia composites: characterization of microstructure, optical and mechanical properties. |
| Grantee: | Edmara Tatiely Pedroso Bergamo |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 22/12118-5 - Development of the recycling process of 3Y-TZP and application in the production of composites with elastic module gradients |
| Grantee: | Henrico Badaoui Strazzi Sahyon |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 22/07157-1 - Physical and mechanical characterization of a multilayered system using recycled zirconia |
| Grantee: | Ernesto Byron Benalcazar Jalkh |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |