Üç farklı Rezin Esaslı Simanla Dentine Simante Edilen Vita Celay Alumina Seramik Disklerin Makaslama Bağlanma Dirençleri


ZORTUK M., KILIÇ K., Bolpaça P., AKDOĞAN G.

Selçuk Üniversitesi Diş Hekimliği Fakültesi, vol.17, no.2, pp.93-97, 2008 (Peer-Reviewed Journal)

Abstract

Background:

All ceramic restorations benefit from resin cement

bonding to the tooth. However, the literature is unclear on which

cement produces the highest and longest-lasting bond strength.

The aim of this study was to examine shear bond strength of the vita

celay alumina ceramic discs luted to dentin with 3 different resin

cements.

Methods:

Thirty human molars were embedded in acrylic resin and

cut below 2 mm enamel-dentin junction which expose deep dentin.

30 Vita Celay alumina ceramic discs were prepared with Celay CAD/

CAM system. Alumina ceramic discs were cemented to the dentin

surface with 2 different resin cements [Clearfil esthetic cement (CES),

Rely X U100 (RX)] and a resin modified glass ionomer cement [G

Cem (GC)] according to the manufacturer’s directions. Shear test

was performed with an universal testing machine at a crosshead

speed of 1 mm/min until bonding failure. Data were analyzed with

one way ANOVA. Means were compared with Tukey’s test at the

0.05 level of significance.

Results:

The 1-way ANOVA revealed statistically differences in shear

bond strength among the 3 cementation groups. Mean shear bond

strengths were 12.45 MPa, 7.58 MPa, 6.11 MPa for CES, GC, RX

respectively. It was found statistically significant difference between

all test groups. The highest shear bond strength value was observed

in the specimens which were cemented with CES. GC group

demonstrated higher shear bond strength than RX group.

Conclusion:

Within the limitations of this study, the 3 luting agents

were significantly different. Self adhesive cement (RX) has the lowest

shear bond strength to dentin and the highest shear bond strength

was observed at resin composite cement (CES).

KEY WORDS

Shear bond strength, resin cement, alumina ceramics