Effects of composite viscosity and adhesive curing mode on marginal sealing of restorations
| Autor: | Letícia Carvalho Coutinho Costa Perote, Natalia Cortez Gutierrez, Carlos Rocha Gomes Torres, Graziela Ribeiro Batista, Maria Beatriz Beber Kamozaki, Maria Amélia Máximo de Araújo |
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| Přispěvatelé: | Universidade Estadual Paulista (Unesp) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Resin restorations Composite number self-etch adhesive 02 engineering and technology Temperature cycling law.invention 03 medical and health sciences Viscosity 0302 clinical medicine Optical microscope law Materials Chemistry Composite material Curing (chemistry) Clearfil S3 Bond 030206 dentistry Surfaces and Interfaces General Chemistry resin-based composites thermo-mechanical cycling 021001 nanoscience & nanotechnology Surfaces Coatings and Films marginal gap Mechanics of Materials Microleakage Adhesive 0210 nano-technology |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| Popis: | Made available in DSpace on 2018-12-11T16:46:21Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-11-02 Objectives: Evaluate the influence of composite viscosity, adhesive systems curing mode and artificial aging on marginal sealing of composite resin restorations. Methods: 240 cavities were prepared in bovine incisors. Teeth were divided in two groups: GR–GrandioSO (Voco), conventional viscosity and GF–GrandioSO Heavy Flow (Voco), low viscosity. Each group was divided into 6 subgroups: FM–Futura Bond M (Voco), FDCL and FDCC–Futura Bond DC (Voco), light and chemical cured, CS–Clearfil S3 Bond (Kuraray), CDCL and CDCC–Cleafil DC (Kuraray), light and chemical cured. Half of all specimens were subjected to mechanical (300.000) and thermal cycling (1.000). Marginal gap was measured in an optical microscope. For microleakage, specimens were stained in 50% ammoniacal silver nitrate. Results: For marginal gap mean (μm), significant differences were shown for all factors (p = 0.000). Results for resin were GR: 28.1 and GF: 40.6; for adhesive CDCC: 28.67, CDCL: 32.25, CS: 34.12, FDCL: 36.10, FM: 36.50 and FDCC: 38.46; and for artificial aging WITHOUT: 29.05 and WITH: 39.65. For microleakage mean (mm), there were also differences for all factors (p = 0.000). Results for resin were GR: 2.68 and GF: 3.46; for adhesive FM: 2.85, CDCC: 3.00, FDCL: 3.08, CDCL: 3.15, CS: 3.16 and FDCC: 3.19; and for artificial aging WITHOUT: 2.66 and WITH: 3.48. Conclusion: Composite with conventional viscosity resulted in narrower marginal gaps and less microleakage. CDCC showed less marginal gap formation. The presence of thermo-mechanical cycling increased the values of gap and microleakage. Department of Restorative Dentistry Institute of Science and Technology São Paulo State University -UNESP Department of Restorative Dentistry Institute of Science and Technology São Paulo State University -UNESP |
| Databáze: | OpenAIRE |
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