oralpresentation
Description

Title: 0250 - Evaluation of Bonding-strength of Intraoral Repair-kit With Current Ceramic Systems

Authors:

Fatma Uslu, Cukurova University College of Dentistry
Janmyrat Achylow, Cukurova University Institute of Natural and Applied Sciences
Yurdanur Ucar (Presenter)
Cukurova University College of Dentistry

Abstract:

Objectives: The aim of this study was to evaluate the bond strength between intraoral repair kit and two different ceramic materials.

Methods: Specimens (N=12/group) with dimensions of 12×14 ×10 were prepared from feldspathic-ceramic (Cerec Blocks, Sirona) and nano-ceramic CAD/CAM blocks (Cerasmart, GC). Specimens were prepared using wet grinding with 800 and 1000 grit SiC paper. Intraoral repair kit (GC repair kit, GC), which consisted a universal bonding agent (G-Premio BOND) and a primer (CERAMIC PRIMER II) was applied on all blocks. Composite resin repair material was placed on the treated surfaces using a mold (8mm diameter and 3mm height) placed in the center. Shear bond strength and elastic modulus were measured using a universal testing machine at a crosshead speed of 1mm/min. Data were analyzed using independent samples t-test (α=0.05).

Results: Statistically significant difference was found for shear bond strength (P=0.0001) while no significant difference was observed for elastic modulus (P=0.150). The mean (±SD) shear bond strength values were 5.4±1.4 MPa and 3.2±1.0 MPa for feldspathic and nano-ceramic materials, respectively. The elastic modulus values were 35.2±14.8 GPa for feldspathic ceramic and 45.8±19.5 GPa for nano-ceramic.

Conclusions: Within the limitation of this study, the bond strength of repair material was higher when applied on feldspathic ceramic material. However, further studies are needed for a definite conclusion.

Disclosure Statement:
The submitter must disclose the names of the organizations with which any author have a relationship, the nature of the relationship, and the clinical or research area involved. The following is submitted: NONE

Tags