The effect of seating pressure and powder/liquid ratio of zinc phosphate cement on the retention of crowns.
The effect of three different powder/liquid ratios of one zinc phosphate cement on the early retention of a standard crown on metal and tooth dies was investigated. Two different seating pressures were evaluated. The results indicate that the effect of variation in the powder/liquid was not significant. The part played by the seating force was significant, the higher seating force resulting in a greater force being required for displacement after 1 h. Greater forces of removal were required when tooth dies were used.
D002484:Cementation / Q000379:methods*; D003442:Crowns; D003799:Dental Stress Analysis; D003781:Denture Retention; D011208:Powders; D011312:Pressure; D012996:Solutions; D013314:Stress, Mechanical; D013997:Time Factors; D015036:Zinc Phosphate Cement
D011208:Powders; D012996:Solutions; D015036:Zinc Phosphate Cement