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Effect of different surface treatments on roughness of IPS Empress 2 ceramic.
MedLine Citation:
PMID:  21110057     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The aim of this study was to evaluate the influence of different surface treatments (air abrasion, acid etching, laser irradiation) on the surface roughness of a lithium-disilicate-based core ceramic. A total of 40 discs of lithium disilicate-based core ceramic (IPS Empress 2; Ivoclar Vivadent, Schaan, Liechtenstein) were prepared (10 mm in diameter and 1 mm in thickness) according to the manufacturer's instructions. Specimens were divided into four groups (n = 10), and the following treatments were applied: air abrasion with alumina particles (50 μm), acid etching with 5% hydrofluoric acid, Nd:YAG laser irradiation (1 mm distance, 100 mJ, 20 Hz, 2 W) and Er:YAG laser irradiation (1 mm distance, 500 mJ, 20 Hz, 10 W). Following determination of surface roughness (R(a)) by profilometry, specimens were examined with atomic force microscopy. The data were analysed by one-way analysis of variance (ANOVA) and Tukey HSD test (α = 0.05). One-way ANOVA indicated that surface roughness following air abrasion was significantly different from the surface roughness following laser irradiation and acid etching (P < 0.001). The Tukey HSD test indicated that the air abrasion group had a significantly higher mean value of roughness (P < 0.05) than the other groups. No significant difference was found between the acid etching and laser irradiation (both Er:YAG and Nd:YAG) groups (P > 0.05). Air abrasion increased surface roughness of lithium disilicate-based core ceramic surfaces more effectively than acid-etching and laser irradiation.
Authors:
Haluk Baris Kara; Erhan Dilber; Ozlem Koc; A Nilgun Ozturk; Mehmet Bulbul
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Publication Detail:
Type:  Journal Article     Date:  2010-11-26
Journal Detail:
Title:  Lasers in medical science     Volume:  27     ISSN:  1435-604X     ISO Abbreviation:  Lasers Med Sci     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-02-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8611515     Medline TA:  Lasers Med Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  267-72     Citation Subset:  IM    
Affiliation:
Faculty of Dentistry, Department of Prosthodontics, Selcuk University, Konya, Turkey, halukbaris@hotmail.com.
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