241 655

Cited 12 times in

Influence of cement thickness on resin-zirconia microtensile bond strength

Authors
 Tae-Hoon Lee  ;  Jin-Soo Ahn  ;  June-Sung Shim  ;  Chong-Hyun Han  ;  Sun-Jai Kim 
Citation
 JOURNAL OF ADVANCED PROSTHODONTICS, Vol.3(3) : 119-125, 2011 
Journal Title
JOURNAL OF ADVANCED PROSTHODONTICS
ISSN
 2005-7806 
Issue Date
2011
Keywords
Cement thickness ; Microtensile bond strength ; Resin cement ; Zirconia
Abstract
PURPOSE: The aim of this study was to evaluate the influence of resin cement thickness on the microtensile bond strength between zirconium-oxide ceramic and resin cement.

MATERIALS AND METHODS: Thirty-two freshly extracted molars were transversely sectioned at the deep dentin level and bonded to air-abraded zirconium oxide ceramic disks. The specimens were divided into 8 groups based on the experimental conditions (cement type: Rely X UniCem or Panavia F 2.0, cement thickness: 40 or 160 µm, storage: thermocycled or not). They were cut into microbeams and stored in 37℃ distilled water for 24 h. Microbeams of non-thermocycled specimens were submitted to a microtensile test, whereas those of thermocycled groups were thermally cycled for 18,000 times immediately before the microtensile test. Three-way ANOVA and Sheffe's post hoc tests were used for statistical analysis (α=95%).

RESULTS: All failures occurred at the resin-zirconia interface. Thermocycled groups showed lower microtensile bond strength than non-thermocycled groups (P<.001). Differences in cement thickness did not influence the resin-zirconia microtensile bond strength given the same resin cement or storage conditions (P>.05). The number of adhesive failures increased after thermocycling in all experimental conditions. No cohesive failure was observed in any experimental group.

CONCLUSION: When resin cements of adhesive monomers are applied over air-abraded zirconia restorations, the degree of fit does not influence the resin-zirconia microtensile bond strength.
Files in This Item:
T201105371.pdf Download
DOI
10.4047/jap.2011.3.3.119
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Prosthodontics (보철과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Sun Jai(김선재) ORCID logo https://orcid.org/0000-0002-0828-8008
Shim, June Sung(심준성) ORCID logo https://orcid.org/0000-0003-1428-0122
Han, Jong Hyoun(한종현)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/95180
사서에게 알리기
  feedback

qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse

Links