Abstract
The setting time, compressive strength, and retentive force of crowns cemented on implant abutments using experimental provisional cements with five different compositions of pre-reacted glass particle (S-PRG: 2, 4, 6, 8, and 10%) [MP10, MP11, MP12, MP13, and MP14, respectively] were determined at 24, 168, and 672 hours after the start of mixing. MP10 showed the longest setting time among the cements tested (p<0.05). There were no significant differences in the setting time between MP13 and 14 (p>0.05). MP10 exhibited a greater compressive strength than MP12, MP13, and MP14 (p<0.05) through all of the storage periods. No significant differences in retentive force values were found at 168 and 672 hours among the cements tested (p>0.05). Under the present experimental conditions, the contents of S-PRG in cement influenced the setting time and compressive strength, but did not affect the retention of crowns to abutments.
