Influence of nano-structured alumina coating treatment on shear bond strength between zirconia ceramic and resin cement.
10.4047/jkap.2016.54.4.354
- Author:
Dong Woon KIM
1
;
Jung Jin LEE
;
Kyoung A KIM
;
Jae Min SEO
Author Information
1. Department of Prosthodontics, School of Dentistry and Institute of Oral Bio-Science, Chonbuk National University, Jeonju, Republic of Korea. jmseo@jbnu.ac.kr
- Publication Type:Original Article
- Keywords:
Zirconia;
Shear bond strength;
Alumina coating;
Thermocycling;
Resin cement
- MeSH:
Aluminum Oxide*;
Ceramics*;
Hot Temperature;
Hydrolysis;
Resin Cements*
- From:The Journal of Korean Academy of Prosthodontics
2016;54(4):354-363
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: The aim of this study was to investigate whether the application of nano-structured alumina coating to the surface of Y-TZP could enhance the bond strength with resin cement. MATERIALS AND METHODS: A total of 80 zirconia plates were prepared and divided into four groups. : 1) airborne particle abrasion treatment (A) : 2) Rocatec treatment after airborne particle abrasion (R) : 3) nano-structured alumina coating treatment after polishing (PC) and 4) nano-structured alumina coating after airborne particle abrasion (AC). Alumina coating was formed by the hydrolysis of aluminium nitride (AlN) powder and heat treatment at 900℃. Coating patterns were observed with FE-SEM. Resin block was bonded to treated zirconia ceramics using resin cement. The shear bond strengths were measured before and after thermocycling. RESULTS: The FE-SEM images show a dense and uniform nano-structured alumina coating structure, which enhances shear bond strength by increasing micro mechanical interlocking to resin cement. PC and AC groups showed higher shear bond strengths than A and R groups before and after thermocycling. A and R groups displayed significant drops in shear bond strength after thermocycling. However, PC and AC groups did not show any meaningful decreases in shear bond strength after thermocycling. CONCLUSION: Treatment of Y-TZP ceramics with nano-structured alumina coating could significantly increase their shear bond strength.
