Table 2.

Film thicknesses (µm) of dental luting agents and standard deviations

Groups	Film thickness
Pure COP*	31.09 (3.16)C
COP 10%	17.05 (4.83)AB
COP 50%	13.03 (4.83)A
Zinc phosphate	20.00 (0.12)B

Different uppercase letters indicate significant differences by one-way ANOVA followed by HSD Tukey test

One-way ANOVA (p=2.4E-10)

^*COP = Castor oil polyurethane