Repair Bond Strength of Aged Composite Resins Using Different Surface Treatment Protocols
| dc.coverage | DOI: 10.11607/prd.5026 | |
| dc.creator | Elsaca, Nicole | |
| dc.creator | Pardo-Díaz, Carolina | |
| dc.creator | Atria, Pablo J. | |
| dc.creator | Jorquera, Gilbert | |
| dc.creator | Turbino, Miriam Lacalle | |
| dc.creator | Sampaio, Camila Sobral | |
| dc.date | 2023 | |
| dc.date.accessioned | 2025-11-18T19:49:03Z | |
| dc.date.available | 2025-11-18T19:49:03Z | |
| dc.description | <p>This study evaluated shear bond strength (SBS) of thermally aged composite resins repaired using different surface protocols. Four-hundred composite resin samples were made using the following materials (100 samples per material): Filtek Z350XT (FXT); Spectra Smart (SSM); IPS Empress Direct (EDI); and Forma (FOR). Each group's samples were then divided into 10 groups (n = 10 samples per group): G1: no surface treatment; G2: phosphoric acid-etching + universal-adhesive (PU); G3: surface roughening + PU (RPU); G4: RPU + silane (RPSU); G5: surface roughening + hydrofluoric acid-etching + universal adhesive (RHU); G6: RHU + silane (RHSU); G7: dry sandblast + PU (DsPU); G8: DsPU + silane (DsPSU); G9: wet sandblast + PU (WsPU); and G10: WsPU + silane (WsPSU). G1 was freshly repaired, and G2 to G10 were thermally aged before repair. Specimens were tested for SBS, and the failure type was observed with a magnifying loupe. Representative images were obtained using a scanning electronic microscope. Data were analyzed by two-way analysis of variance and Tukey post hoc tests (P = .05). Differences were detected among different surface treatments and among different composite resins with equal surface treatments (P < .05). SBS means ranged from 10.48 (FOR:G2) to 20.70 (FXT:G7). The highest SBS values were seen in G7 to G10 (P > .05), while lowest values were generally observed for G2. G1 showed higher results compared to G2 (P < .05), except for EDI (P > .05). Most failures corresponded with cohesive type. In general, thermally aged composite resin presented a decreased repair bond strength potential when no additional surface treatment was applied. Sandblasting improved the SBS of repaired aged composite resins.</p> | eng |
| dc.identifier | https://investigadores.uandes.cl/en/publications/1d601dbc-f1d1-4cf1-b368-742ea721ea7c | |
| dc.identifier.uri | https://repositorio.uandes.cl/handle/uandes/55881 | |
| dc.language | eng | |
| dc.rights | info:eu-repo/semantics/restrictedAccess | |
| dc.source | vol.43 (2023) nr.1 p.E53-E60 | |
| dc.title | Repair Bond Strength of Aged Composite Resins Using Different Surface Treatment Protocols | eng |
| dc.type | Article | eng |
| dc.type | Artículo | spa |