Effect of airborne-particle abrasion of presintered zirconia on surface roughness and bacterial adhesion

The Journal of Prosthetic Dentistry
Ming ZhangDongxiang Zheng

Abstract

Factors associated with implant periodontal disease of zirconia restorations such as surface roughness remain largely unknown. The purpose of this study was to investigate how airborne-particle abrasion before sintering affects roughness and bacterial adhesion on the surface of zirconia. Thirty presintered zirconia specimens were divided into 6 groups of 5 after being polished with silicon carbide paper (1200 grit). A different surface treatment was applied to each group (no treatment [group Ct] and 120-μm alumina abrasion for 5, 8, 10, 12, and 15 seconds [A5s, A8s, A10s, A12s, and A15s]), and the specimens were then densely sintered. The mean centric linear roughness (Ra) was measured, and the 3D measurement of surface roughness (3D roughness) was determined. The number of colony forming units (CFUs) of Streptococcus mutans adhering to the surface was also examined. One-way ANOVA was used for data analysis (α=.05). Airborne-particle abrasion before sintering significantly increased surface roughness. Group A8s, A10s, A12s, and A15s showed statistically significant higher CFU/mL than did group A5s (P<.05). No difference was found in CFU/mL between group Ct and A5s (P=.230). Airborne-particle abrasion before sintering is a usefu...Continue Reading

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Citations

Apr 12, 2016·The Journal of Prosthetic Dentistry·Yoon-Hyuk HuhLee-Ra Cho
Nov 28, 2019·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·Sevcan Kurtulmus-YilmazOguz Ozan
Oct 17, 2017·Journal of Prosthodontic Research·Kamal EbeidMatthias Kern
Dec 7, 2018·Dental Materials Journal·Ruizhi YinKwang-Yeob Song

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