Related Experiment Video
Updated: Jun 20, 2026
Impact of Fabrication Techniques and Polishing Procedures on Surface Roughness of Denture Base Resins
Published on: January 17, 2025
Effect of different surface treatments on In-Ceram Alumina roughness. An AFM study
Estrella Osorio1, Manuel Toledano, Bruno Lopes da Silveira
1Department of Dental Materials, School of Dentistry, Colegio Máximo de Cartuja, University of Granada, 18071 Granada, Spain.
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 Al(2)O(3); 110 microm particle size; 2.8 bar; 20s. The following treatments were performed: (1) no treatment; (2) Rocatec System (RC): after SB treatment, sandblasting with silica powder; 30 microm particle size; 2.8 bar; 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, 20 Hz, 2W, and 141.54J/cm(2)). (4) Nd:YAG laser plus Rocatec System: after ND treatments, RC was applied. Digital images (20 microm x 20 microm) from the surfaces were obtained by means of an AFM microscope in taping mode (Nanoscope IIIa, Digital Instruments). Roughness was measured in 10 microm x 10 microm boxes. Roughness (R(a)) 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.
