Effect of Different Application Techniques of Universal Bonding System on Microtensile Bond Strength of Bulk-Fill Composites to Primary and Permanent Dentin
| Autor: | Amir Ghasemi, Leila Simaei, Mahsa Sheikholeslamian, Masoud Fallahinejad Ghajari |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Bond strength business.industry Dental Bonding Dentistry Bulk fill Dental bonding Composite Resins Permanent Dentition Primary Teeth lcsh:RK1-715 medicine.anatomical_structure stomatognathic system lcsh:Dentistry Dentin-Bonding Agents Tensile Strength Ultimate tensile strength Dentin medicine Original Article Adhesive business Dentin Bonding Agents Permanent teeth |
| Zdroj: | Frontiers in Dentistry Frontiers in Dentistry, Vol 17 (2020) |
| ISSN: | 2676-296X |
| DOI: | 10.18502/fid.v17i1.3962 |
| Popis: | Objectives: This study aimed to determine the microtensile bond strength (μTBS) of a bulk-fill composite to permanent and primary coronal dentin using a universal adhesive in self-etch and total-etch modes. Materials and Methods: This in-vitro study was performed on 52 occlusal dentinal surfaces of human primary and permanent teeth. The crowns were cut to the gingival level. The 48 prepared dentin sections were randomly assigned to the following groups (n=13): A: Primary/Total-etch, B: Primary/Self-etch, C: Permanent/Total-etch, and D: Permanent/Self-etch. In groups A and C, after etching for 15 seconds, two layers of a universal bonding (Futurabond U) were applied and cured for 10 seconds. All samples were filled with a bulk-fill composite (x-trafil; VOCO) and cured for 40 seconds. The samples were cut to a bar-shaped dentin block with the dimensions of 1×1×1 mm3, and after 10,000 thermocycles, the μTBS test was accomplished at a crosshead speed of 1 mm/minute. The mean and standard deviation (SD) of μTBS were calculated, and the data were analyzed using two-way analysis of variance (ANOVA) and Fisher's exact test. Results: The mean μTBS was as follows: A: 15.03±2.0279, B: 11.11±2.4423, C: 23.50±4.8165, and D: 16.26±6.3200 MPa. Futurabond U showed a higher μTBS in the total-etch mode (P |
| Databáze: | OpenAIRE |
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