The Effect of Hydrofluoric Acid Etching Duration on the ... | 合法醫療器材資訊網

由RRamakrishnaiah著作·2016·被引用109次—Accordingtoseveralrecentstudies,etchingofceramicwith5%hydrofluoricacidfor2–3minisenoughtoselectivelydissolvetheglassyphase ...

and present the mean and standard deviation values of Sa and contact angle (CA), respectively.

Results of the one-way ANOVA for Sa showed a statistically significant difference among the groups (). The Sa increased with an increase in etching time in all the materials and experimental groups (). Control group, Dentsply Celtra™ and Vita Suprinity FC™ specimens showed the lowest surface roughness (0.08 ± 0.008) and Vita mark IITM showed the highest surface roughness (0.14 ± 0.016). No significant difference was observed between Vita mark IITM and Vita Suprinity™ in 80, 160 s and 40 s, 80 s, respectively (values marked with similar superscripted letters in ).

The results of wettability showed a statistically significant difference (a decrease) in CA (an increase in surface wettability) with an increase in the etching time (). The samples etched for a longer time (160 s) showed the lowest mean CA, ranging between 6.86 ± 0.35 (Dentsp...