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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


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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

https://hrcak.srce.hr/58724

Publication date:

21.9.2010.

Article data in other languages: croatian

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