Evaluation of air‐particle abrasion of Y‐TZP with different particles using microstructural analysis. (28th May 2013)

• Record Type: Journal Article
• Authors: Turp, V; Sen, D; Tuncelli, B; Goller, G; Özcan, M
• Is Part Of: Australian dental journal. Volume 58:Number 2(2013:Jun.)
• Page Start: 183
• Page End: 191
• Publication Date: 2013-05-28
• Subjects: Dentistry -- Periodicals; Dentistry -- Periodicals; Dentisterie -- Australie -- Périodiques; Tandheelkunde; 617.6
• DOI: 10.1111/adj.12065
• Languages: English
• ISSNs: 0045-0421

Abstract

<abstract abstract-type="main" id="adj12065-abs-0001"> <title>Abstract</title> <sec id="adj12065-sec-0001" sec-type="section"> <title>Background</title> <p>This study evaluated the effect of air‐particle abrasion with different particle sizes on the surface roughness and phase transformation of yttria‐stabilized tetragonal zirconia ceramics (Y‐TZP).</p> </sec> <sec id="adj12065-sec-0002" sec-type="section"> <title>Methods</title> <p>Eighty‐four Y‐TZP discs of 15 mm diameter and 1.0 mm thickness were fabricated. The samples were divided into four groups (n = 21): (1) air‐particle abrasion with 30 μm CoJet sand blast coating agent (CoJet, 3M ESPE); (2) 50 μm Al<sub>2</sub>O<sub>3</sub> particles; (3) 110 μm Al<sub>2</sub>O<sub>3</sub> particles; and (4) 250 μm Al<sub>2</sub>O<sub>3</sub> particles. Each group was further divided into three subgroups each (n = 7) and treated for 5 seconds, 15 seconds and 30 seconds. Mean surface roughness was determined using a profilometer. The surfaces were analysed with a scanning electron microscope. XRD analysis was employed and the relative amount of the monoclinic phase was calculated. The results were statistically analysed by two‐way analysis of variance (ANOVA, p < 0.05).</p> </sec> <sec id="adj12065-sec-0003" sec-type="section"> <title>Results</title> <p>Air‐particle abrasion with 250 μm Al<sub>2</sub>O<sub>3</sub> particles for 30 seconds had the highest surface roughness (p < 0.001) and a significantly higher amount of monoclinic phase compared to air‐particle abrasion with 30 μm, 50 μm and 110 μm particles (p < 0.001).</p> </sec> <sec id="adj12065-sec-0004" sec-type="section"> <title>Conclusions</title> <p>Duration and particle size of air‐particle abrasion affects the roughness and phase transformation of Y‐TZP. Longer treatment times with larger particles may result in degradation of material.</p> </sec> </abstract>