The effect of silica-coating by sol-gel process on resin-zirconia bonding

C.Y.K. Lung, E. Kukk, J.P. Matinlinna

Research output: Contribution to journalArticlepeer-review

Abstract

The effect of silica-coating by sol-gel process on the bond strength of resin composite to zirconia was evaluated and compared against the sandblasting method. Four groups of zirconia samples were silica-coated by sol-gel process under varied reagent ratios of ethanol, water, ammonia and tetraethyl orthosilicate and for different deposition times. One control group of zirconia samples were treated with sandblasting. Within each of these five groups, one subgroup of samples was kept in dry storage while another subgroup was aged by thermocycling for 6,000 times. Besides shear bond testing, the surface topography and surface elemental composition of silica-coated zirconia samples were also examined using scanning electron microscopy and X-ray photoelectron spectroscopy. Comparison of silica coating methods revealed significant differences in bond strength among the Dry groups (p<0.001) and Thermocycled groups (p<0.001). Comparison of sol-gel deposition times also revealed significant differences in bond strength among the Dry groups (p<0.01) and Thermocycled groups (p<0.001). Highest bond strengths were obtained after 141-h deposition: Dry (7.97±3.72 MPa); Thermocycled (2.33±0.79 MPa). It was concluded that silica-coating of zirconia by sol-gel process resulted in weaker resin bonding than by sandblasting.
Original languageEnglish
Pages (from-to)165-172
Number of pages8
JournalDental Materials Journal
Volume32
Issue number1
DOIs
Publication statusPublished - 31 Jan 2013

Keywords

  • sol-gel processing
  • resin composite
  • zirconia
  • bond strength
  • silica-coating

Fingerprint

Dive into the research topics of 'The effect of silica-coating by sol-gel process on resin-zirconia bonding'. Together they form a unique fingerprint.

Cite this