Influence of nano-structured alumina coating treatment on shear bond strength between zirconia ceramic and resin cement / 대한치과보철학회지
The Journal of Korean Academy of Prosthodontics
;
: 354-363, 2016.
Article
Dans Anglais
| WPRIM
| ID: wpr-169360
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 ANDMETHODS:
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.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Céramiques
/
Céments résine
/
Oxyde d'aluminium
/
Température élevée
/
Hydrolyse
langue:
Anglais
Texte intégral:
The Journal of Korean Academy of Prosthodontics
Année:
2016
Type:
Article
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