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Assessing microleakage in resin composite restorations rebonded with a surface sealant and three low-viscosity resin systems.
Quintessence Int 2002; 33(6):450-6QI

Abstract

OBJECTIVES

The aim of this study was to assess the ability of three low-viscosity resin systems (Unibond, Single Bond, and Fluorseal), used as rebonding agents, and a specific surface-penetrating sealant (Fortify) to prevent microleakage in Class V resin composite restorations.

METHOD AND MATERIALS

Fifty Class V cavities with the occlusal margin in enamel and the cervical margin in dentin and cementum were prepared on both the buccal and lingual surfaces of sound extracted premolars and restored with a hybrid light-cured resin composite. After finishing and polishing, restorations were randomly assigned to one of five equal groups (n = 10): a control, without surface sealing, and four experimental groups in which margins were etched and rebonded. Specimens were thermocycled, immersed in a 50% silver nitrate solution, sectioned longitudinally, and analyzed for leakage at the occlusal and cervical interfaces.

RESULTS

Statistical analysis showed significantly less leakage at the enamel margins for all groups. Fortify and Unibond were statistically similar and provided better marginal sealing at dentin and cementum interfaces. Fluorseal showed the poorest ability to prevent microleakage.

CONCLUSION

The rebonding technique may substantially minimize microleakage at dentin and cementum margins of composite restorations, when a resin system with sufficiently low viscosity is used as a surface sealant, regardless of whether it has been specified for such a purpose.

Authors+Show Affiliations

Department of Restorative Dentistry, Ribeirão Preto School of Dentistry, University of São Paulo, Av do Café, s/n Monte Alegre CEP: 14040-904, Ribeirão Preto, São Paulo, Brasil. rgpalma@forp.usp.brNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

12073726

Citation

Ramos, Renata Pereira, et al. "Assessing Microleakage in Resin Composite Restorations Rebonded With a Surface Sealant and Three Low-viscosity Resin Systems." Quintessence International (Berlin, Germany : 1985), vol. 33, no. 6, 2002, pp. 450-6.
Ramos RP, Chinelatti MA, Chimello DT, et al. Assessing microleakage in resin composite restorations rebonded with a surface sealant and three low-viscosity resin systems. Quintessence Int. 2002;33(6):450-6.
Ramos, R. P., Chinelatti, M. A., Chimello, D. T., & Dibb, R. G. (2002). Assessing microleakage in resin composite restorations rebonded with a surface sealant and three low-viscosity resin systems. Quintessence International (Berlin, Germany : 1985), 33(6), pp. 450-6.
Ramos RP, et al. Assessing Microleakage in Resin Composite Restorations Rebonded With a Surface Sealant and Three Low-viscosity Resin Systems. Quintessence Int. 2002;33(6):450-6. PubMed PMID: 12073726.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Assessing microleakage in resin composite restorations rebonded with a surface sealant and three low-viscosity resin systems. AU - Ramos,Renata Pereira, AU - Chinelatti,Michelle Alexandra, AU - Chimello,Daniela Thomazatti, AU - Dibb,Regina Guenka Palma, PY - 2002/6/21/pubmed PY - 2002/10/10/medline PY - 2002/6/21/entrez SP - 450 EP - 6 JF - Quintessence international (Berlin, Germany : 1985) JO - Quintessence Int VL - 33 IS - 6 N2 - OBJECTIVES: The aim of this study was to assess the ability of three low-viscosity resin systems (Unibond, Single Bond, and Fluorseal), used as rebonding agents, and a specific surface-penetrating sealant (Fortify) to prevent microleakage in Class V resin composite restorations. METHOD AND MATERIALS: Fifty Class V cavities with the occlusal margin in enamel and the cervical margin in dentin and cementum were prepared on both the buccal and lingual surfaces of sound extracted premolars and restored with a hybrid light-cured resin composite. After finishing and polishing, restorations were randomly assigned to one of five equal groups (n = 10): a control, without surface sealing, and four experimental groups in which margins were etched and rebonded. Specimens were thermocycled, immersed in a 50% silver nitrate solution, sectioned longitudinally, and analyzed for leakage at the occlusal and cervical interfaces. RESULTS: Statistical analysis showed significantly less leakage at the enamel margins for all groups. Fortify and Unibond were statistically similar and provided better marginal sealing at dentin and cementum interfaces. Fluorseal showed the poorest ability to prevent microleakage. CONCLUSION: The rebonding technique may substantially minimize microleakage at dentin and cementum margins of composite restorations, when a resin system with sufficiently low viscosity is used as a surface sealant, regardless of whether it has been specified for such a purpose. SN - 0033-6572 UR - https://www.unboundmedicine.com/medline/citation/12073726/Assessing_microleakage_in_resin_composite_restorations_rebonded_with_a_surface_sealant_and_three_low_viscosity_resin_systems_ DB - PRIME DP - Unbound Medicine ER -