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  • Title: A clinical evaluation of a self-etching primer and a giomer restorative material: results at eight years.
    Author: Gordan VV, Mondragon E, Watson RE, Garvan C, Mjör IA.
    Journal: J Am Dent Assoc; 2007 May; 138(5):621-7. PubMed ID: 17473040.
    Abstract:
    BACKGROUND: The authors evaluated the performance of a giomer restorative material (Beautifil, Shofu, Kyoto, Japan) with a self-etching primer (FL-Bond, Shofu) for posterior restorations. MATERIALS AND METHODS: Two clinicians placed 26 Class I restorations and 35 Class II restorations in 31 patients ranging in age from 21 to 62 years (mean age, 34 years). Inclusion criteria required patients to have molar-supported permanent dentition free of any edentulous spaces and no clinically significant occlusal interference, as well as one or more permanent molars or premolars requiring new or replacement Class I or II restorations. Two of the authors examined the restorations using modified U.S. Public Health Service/Ryge criteria for color match, marginal adaptation, anatomy, surface roughness, marginal staining, interfacial staining, proximal and occlusal contacts, secondary caries, postoperative sensitivity and luster. RESULTS: The two authors examined all restorations at the one-year recall visit, 58 at the two-year visit, 47 at the three-year visit, 39 at the four-year visit and 41 at the eight-year visit (16 Class I and 25 Class II restorations). During the eight-year period, they detected no changes with respect to surface roughness, postoperative sensitivity or secondary caries. The majority of changes recorded were for marginal adaptation at occlusal (29 percent) and proximal (16 percent) surfaces and marginal staining at occlusal (15 percent) and proximal (32 percent) surfaces. The McNemar test showed significant changes between baseline and the eight-year evaluation only for marginal adaptation at occlusal surfaces (P = .0047) and marginal staining at proximal surfaces (P = .04). None of the restorations failed. CONCLUSION: Most of the restorations maintained good quality during the observation period. CLINICAL IMPLICATIONS: Beautiful restorative material and FL-Bond bonding system, when placed in Class I and II preparations, achieved clinically acceptable results after eight years of service.
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