Journal of Dentistry
Volume 38, Issue 2 , Pages 118-122, February 2010

Effect of different surface treatments on In-Ceram Alumina roughness. An AFM study

  • Estrella Osorio

      Affiliations

    • Department of Dental Materials, School of Dentistry, Colegio Máximo de Cartuja, University of Granada, 18071 Granada, Spain
    • ,
  • Manuel Toledano

      Affiliations

    • Department of Dental Materials, School of Dentistry, Colegio Máximo de Cartuja, University of Granada, 18071 Granada, Spain
    • Corresponding Author InformationCorresponding author at: Avda. Fuerzas Armadas n° 1, 1B, 18014 Granada, Spain. Tel.: +34 958 243788; fax: +34 958 240908.
    • ,
  • Bruno Lopes da Silveira

      Affiliations

    • Department of Restorative Dentistry, School of Dentistry, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
    • ,
  • Raquel Osorio

      Affiliations

    • Department of Dental Materials, School of Dentistry, Colegio Máximo de Cartuja, University of Granada, 18071 Granada, Spain

Received 16 July 2009; received in revised form 21 September 2009; accepted 21 September 2009. published online 28 September 2009.

Abstract 

Objectives

The aim of this study was to evaluate the influence of different treatments on the surface roughness of In-Ceram Alumina (VITA, Säckingen, Germany).

Methods

The ceramic blocks were polished (4000 grit) and sandblasted (SB) with airborne particle abrasion Al2O3; 110μm particle size; 2.8bar; 20s. The following treatments were performed: (1) no treatment; (2) Rocatec System (RC): after SB treatment, sandblasting with silica powder; 30μm particle size; 2.8bar; 20s. (3) Neodymium:yttrium–aluminium–garnet (Nd:YAG) laser (ND) application of graphite powder (stain) on the ceramic surface and Nd:YAG laser irradiation (distance: 1mm, 100mJ, 20Hz, 2W, and 141.54J/cm2). (4) Nd:YAG laser plus Rocatec System: after ND treatments, RC was applied. Digital images (20μm×20μm) from the surfaces were obtained by means of an AFM microscope in taping mode (Nanoscope IIIa, Digital Instruments). Roughness was measured in 10μm×10μm boxes. Roughness (Ra) data (nm) were analyzed by one-way ANOVA (p<0.05).

Results

No differences in ceramic surfaces roughness occurred after any of the tested treatments (p=0.54).

Conclusions

High-alumina ceramic surface roughness was not increased with any of the tested treatments.

Keywords: Ceramic, Alumina, Sandblasting, Rocatec, Roughness, AFM, Surfaces treatments, Silica coating, Nd:YAG laser, Abrasion

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PII: S0300-5712(09)00227-9

doi:10.1016/j.jdent.2009.09.010

Journal of Dentistry
Volume 38, Issue 2 , Pages 118-122, February 2010

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