Improving Surface Properties of PEEK for Dental Applications by Using Piranha Solution

Table 4

Tukey’s test of multiple comparisons for different groups of roughness test results.

Tukey’s HSD test
Groups pairs	Difference	Standard error	Q score	P-value	Sig.
C1 vs. C2	215.219	15.0671	14.2840	<0.00001	S
C1 vs. P3	148.111	15.0671	9.8301	0.00001	S
C1 vs. P5	62.7669	15.0671	4.1658	0.05499	NS
C1 vs. P7	1.0939	15.0671	0.0726	>0.99999	NS
C2 vs. P3	67.108	15.0671	4.4539	0.03612	S
C2 vs. P5	152.452	15.0671	10.1182	0.00001	S
C2 vs. P7	214.125	15.0671	14.2114	<0.00001	S
P3 vs. P5	85.344	15.0671	5.66423	0.00557	S
P3 vs. P7	147.017	15.0671	9.7575	0.00001	S
P5 vs. P7	61.673	15.0671	4.0932	0.06100	NS