Shear bond strengths of composite resin and giomer to mineral trioxide aggregate at different time intervals
| Autor: | Arezoo Hassanpour-Kashani, Amir Ahmad Ajami, Ayda Savadi-Oskoee, Mehdi Abed-Kahnamoui, Farhad Azadi-Oskoee, Mahmoud Bahari |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Mineral trioxide aggregate
Materials science Bond strength Research 0206 medical engineering Composite number 030206 dentistry 02 engineering and technology CIENCIAS MÉDICAS [UNESCO] 020601 biomedical engineering Shear bond Pulp capping Operative Dentistry and Endodontics 03 medical and health sciences 0302 clinical medicine Pulp therapy UNESCO::CIENCIAS MÉDICAS Composite material General Dentistry |
| Zdroj: | Journal of Clinical and Experimental Dentistry Ajami, Amir Ahmad ; Bahari, Mahmood ; Hassanpour-Kashani, Arezoo ; Abed Kahnamoii, Mehdi ; Savadi-Oskoee, Ayda ; Azadi-Oskoee, Farhad. Shear bond strengths of composite resin and giomer to mineral trioxide aggregate at different time intervals. En: Journal of Clinical and Experimental Dentistry, 9 7 2017: 906-911 RODERIC. Repositorio Institucional de la Universitat de Valéncia instname |
| ISSN: | 1989-5488 |
| Popis: | Background The efficacy of the bond between the restorative materials and the pulp capping materials has an important role in the success of vital pulp therapy. Therefore, the aim of this study was to evaluate the shear bond strength of composite resin and giomer to MTA at different time intervals after mixing of MTA. Material and methods Ninety cylindrical MTA samples were prepared and assigned to two groups (n=45) based on the restorative materials used (composite resin or giomer). Each group was subdivided into 3 subgroups (n=15) based on the evaluation intervals (immediately, 2.45 hours and 3 days after mixing MTA). After the bonding procedures, the shear bond strengths of the samples were measured in MPa at a strain rate of 0.5 mm/min. Data were analyzed with repeated-measures ANOVA, post hoc tests and t-test (P Results Bond strength of composite resin was minimum at baseline but it increased significantly 2.45 hours after mixing MTA (P=0.002), with no significant changes in bond strength up to three days (P=0.08). Bond strength of giomer did not exhibit any significant changes from baseline to 2.45 hours after mixing MTA (P=078); however, at 3 days it reached a minimum (P=0.000). In addition, the means of bond strength of composite resin 2.45 hours and 3 days after mixing were significantly higher than those of giomer (P=0.001 and P=0.000, respectively). Conclusions Bond strengths of composite resin 2.45 hours and also 3 days after mixing were significantly higher than those of giomer. In addition, the shear bond strength of giomer decreased over time; however, the shear bond strength of composite resin increased. Key words:Composite resin, Giomer, Shear bond strength, Vital pulp therapy. |
| Databáze: | OpenAIRE |
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