Research Article

Enhanced Hydrophilicity and Protein Adsorption of Titanium Surface by Sodium Bicarbonate Solution

Figure 2

A plot of WCA (°) on both SLA and machined specimens NaHCO3-treated at different time points with or without being rinsed. The WCAs of both SLA and machined specimens decreased with increasing treatment time. The WCAs of SLA specimens showed rapid decline. After 1 min, the WCAs of the NaHCO3-treated and rinsed SLA specimens decreased to almost zero. The WCAs of machined surfaces displayed a relatively small decrement after NaHCO3 treatment and a slight increment after being rinsed.