Original scientific paper
Cuspal Deflection and Adhesive Interface Integrity of Low Shrinking Posterior Composite Restorations
Roxana Romanita CARA ILICI
; Prosthetic Technology and Dental Materials Department, Faculty of Dental Medicine, University of Medicine and Pharmacy „Carol Davila”, Bucharest, Romania
Eduard Gatin
; Prosthetic Technology and Dental Materials Department, Faculty of Dental Medicine, University of Medicine and Pharmacy „Carol Davila”, Bucharest, Romania; Polymers Department, Faculty of Physics, University of Bucharest, Romania
Elena Matei
; INFIM Institute, PO Box MG. 7, Magurele – Bucharest, Romania
Andreea Didilescu
; Anatomy and Embriology Department, University of Medicine and Pharmacy „Carol Davila”, Bucharest, Romania
Codruta Nicola
; Dental Materials Department, University of Medicine and Pharmacy “Iuliu Hatieganu”, Cluj-Napoca, Romania
Ion Patrascu
; Prosthetic Technology and Dental Materials Department, Faculty of Dental Medicine, University of Medicine and Pharmacy „Carol Davila”, Bucharest, Romania
Abstract
Low shrinking resin composites are in the focus of research in posterior resin composite restoratives. In this context, the silorane-chemistry, incorporating ring-opening monomers and highly filled packable dimethacrylates seem to be most promising. Material and Methods: The goal of this study was to investigate cuspal deflection after light-curing in extracted upper premolars (n=10), using direct current differential transducers (DCDT), and adhesive interface integrity by scanning electron microscopy (SEM) evaluation, of two restorative systems: 1) Filtek™ Silorane/ Silorane System Adhesive (3M ESPE); 2) Premise™ Packable /OptiBond FL (KERR). Data were analysed using a two-tailed t-test. Results: A p-value < 0.05 was considered statistically significant. Filtek™ Silorane may reduce cuspal deflection associated to the polymerization process, but there is concern regarding durability of adhesive interface integrity. Conclusions: Premise™ Packable showed higher cuspal deflection and complete integrity of adhesive interface.
Keywords
Composite Resins, Polymers, Bicuspids; Adhesives
Hrčak ID:
58724
URI
Publication date:
21.9.2010.
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