Long-term performance of refurbished amalgam restorations: 10-year follow-up

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dc.contributor.authorMoncada, Gustavo
dc.contributor.authorFernandez, Eduardo
dc.contributor.authorMena, Katherine
dc.contributor.authorVildosola, Patricio
dc.contributor.authorEstay, Juan
dc.contributor.authorde Oliveira, Osmir B. [UNESP]
dc.contributor.authorMartin, Javier
dc.contributor.authorMjör, Ivar A.
dc.contributor.authorGordan, Valeria V.
dc.contributor.institutionUniversidad de Chile
dc.contributor.institutionUniversidad Autónoma de Chile
dc.contributor.institutionUniversity of Chile
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversity of Florida
dc.date.accessioned2018-12-11T16:49:57Z
dc.date.available2018-12-11T16:49:57Z
dc.date.issued2017-01-01
dc.description.abstractPurpose: This prospective, blinded clinical trial assessed the performance of amalgam restorations that were refurbished, replaced, or not treated. Materials and Methods: Twenty-three patients were included, ages 18-80 years, with 63 amalgam restorations that had one or more defects in their clinical features, such as defective anatomic form, roughness and/or luster according to United State Public Health Service (USPHS) criteria. Restorations were randomly assigned to either refurbishment (A: n = 21), replacement (B: n = 21) or untreated (C: n = 21) groups. Two calibrated examiners evaluated the restorations at baseline (Kappa = 0.74) and after 10 years (Kappa = 0.84), according to eight parameters: anatomy, roughness, luster, secondary caries, marginal adaptation, occlusal contact, marginal staining and tooth sensitivity. Wilcoxon tests were performed for within-group comparisons, and Friedman tests were used for multiple within-group comparisons. The Mantel-Cox test was used to compare survival curves. Results: After 10 years, 49 restorations (77.8%) were assessed (group A: n = 19; group B: n = 13; group C: n = 17). Over a decade, the three groups showed similar clinical performances for all studied parameters: anatomy (p = 0.410), roughness (p = 0.930), luster (p = 0.984), secondary caries (p = 1.0), marginal adaptation (p = 0.433), occlusal contact (p = 0.33), marginal staining (p = 0.470), and tooth sensitivity (p = 0.784). Conclusions: Amalgam restorations that have defective anatomic form, roughness and/or luster performed similarly for all studied parameters, whether they were refurbished, replaced or left untreated after 10 years in patients with low and intermediate caries risk. Most of the restorations were classified as clinically acceptable after ten years. Restorations in all three groups tended to deteriorate over time.en
dc.description.affiliationDepartment of Restorative Dentistry Dental School Universidad de Chile
dc.description.affiliationDentistry Dental School University of Chile and Instituto de Ciencias Biomédicas Universidad Autónoma de Chile Universidad Autónoma de Chile
dc.description.affiliationOperative Dentistry Dental School University of Chile
dc.description.affiliationOperative Dentistry Dental School Universidade Estadual Paulista Júlio de Mesquita Filho UNESP
dc.description.affiliationDepartment of Restorative Dental Sciences Division of Operative Dentistry College of Dentistry University of Florida
dc.description.affiliationUnespOperative Dentistry Dental School Universidade Estadual Paulista Júlio de Mesquita Filho UNESP
dc.format.extent435-445
dc.identifierhttp://dx.doi.org/10.3290/j.ohpd.a38775
dc.identifier.citationOral Health and Preventive Dentistry, v. 15, n. 5, p. 435-445, 2017.
dc.identifier.doi10.3290/j.ohpd.a38775
dc.identifier.issn1757-9996
dc.identifier.issn1602-1622
dc.identifier.scopus2-s2.0-85030837939
dc.identifier.urihttp://hdl.handle.net/11449/170255
dc.language.isoeng
dc.relation.ispartofOral Health and Preventive Dentistry
dc.relation.ispartofsjr0,511
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectAmalgam restorations
dc.subjectClinical trial
dc.subjectOral health care
dc.subjectRefurbished restorations
dc.subjectRestoration replacement
dc.titleLong-term performance of refurbished amalgam restorations: 10-year follow-upen
dc.typeArtigo

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