Novel PEEK Retentive Elements versus Conventional Retentive Elements in Mandibular Overdentures: A Randomized Controlled Trial

Table 1

Comparison between retention forces (N) in the two groups.

	PEEK		Ball		value	C.I 95%	Effect size (partial eta squared)
	Mean	SD	Mean	SD
Zero	37.6^A	0.992	17.79^A	0.488	0.001	20.5053–19.1147	0.968
3	33.9^B	0.917	16.781^B	0.481	0.001	17.8203–16.5177	0.950
6	32.7^C	1.015	15.972^C	0.763	0.001	−17.5266–15.9294	0.523
12	31.65^D	1.166	13.054^D	0.643	0.001	−19.4335–17.7585	0.876
Effect size (partial eta squared)	0.979		0.968

Significant at , different superscripts (A, B, C, & D) in the same column are statistically significantly different.