Fulltext

Marginal seal stability of one bottle adhesives in Class V vs. Class I cavities

Mayoral, Juan ; Gregor, Ladislav ; Campos, Edson ; Roig, Miguel ; Krejci, Ivo

In: Clinical Oral Investigations, 2011, vol. 15, no. 2, p. 257-264

Zum persönliche Liste hinzufügen
    Titel
    • Marginal seal stability of one bottle adhesives in Class V vs. Class I cavities
    Autor
    • Mayoral, Juan. Department of Restorative Dentistry, International University of Catalonia, Barcelona, Spain
    • Gregor, Ladislav. Division of Cariology and Endodontology, School of Dentistry, University of Geneva, Geneva, Switzerland
    • Campos, Edson. Department of Restorative Dentistry, UNIFEB, Universitary Center of Barretos, Barretos, Brazil
    • Roig, Miguel. Department of Restorative Dentistry, International University of Catalonia, Barcelona, Spain
    • Krejci, Ivo. Division of Cariology and Endodontology, School of Dentistry, University of Geneva, Geneva, Switzerland
    Dokumententyp
    • Postprint
    Sprache
    • Englisch
    Veröffentlicht in
    • Clinical Oral Investigations, 2011, vol. 15, no. 2, p. 257-264. Springer-Verlag
    Andere elektronische Ausgabe
    OAI-PMH-ID
    • oai:doc.rero.ch:321517
    Summary
    The aim of this study was to test the influence of two different cavity configurations on marginal stability of recent one bottle "etch & rinse” and "self-etch” adhesives in Class V vs. Class I cavities, before and after thermo-mechanical loading under simulation of dentinal fluid. Forty human upper molars were selected and assigned to five experimental groups. Intrapulpal pressure was maintained during cavity preparation, restoration placement, finishing and stressing. Standardized Class I and V-Shaped Class V cavities were prepared on each tooth. Half of the margins of Class V cavities were located in enamel and half in dentin. All cavities were restored with different adhesives systems and a nano-hybrid composite. Materials were light-cured using a LED unit. Restored teeth were loaded in a computer-controlled chewing machine with 1.2 million mechanical occlusal cycles simultaneously with 3,000 thermal cycles (5-50-5°C). Impressions were made with polyvinylsiloxane of each restoration before and after loading. Gold-coated epoxy replicas were prepared for SEM examination at ×200 magnification. Significant differences between materials were found both before and after loading (Kruskal-Wallis, Bonferroni, p < 0.05). Significant differences were also found between Class I and V restorations (Wilcoxon Matched-Pairs Signed-Rank Test, p < 0.05). Even before thermo-mechanical loading, none of the groups had 100% continuous margin. Marginal seal stability of recent one bottle "etch & rinse” and "self-etch” adhesives are significantly different and susceptible to cavity configuration