Table 2.

Descriptive statistics of the mean, min and max values of inserts’ diameter for both groups at different time intervals and the results of independent samples (Student’s) t test for the comparison of average diameter (mm) between the two groups

	Average Diameter		Test of significance P-value
	PEEK inserts n = 8	Nylon Inserts n = 8
(T0) (mm) Mean ± Std.	4.076 ± 0.066	4.227 ± 0.190	p = 0.053
(T1) (mm) Mean ± Std.	4.076 ± 0.066	4.227 ± 0.190	p = 0.053
(T2) (mm) Mean ± Std.	4.103 ± 0.086	4.195 ± 0.095	p = 0.061
(T3) (mm) Mean ± Std.	4.051 ± 0.112	4.645 ± 0.082	p = 0.000*
(T4) (mm) Mean ± Std.	4.119 ± 0.105	4.409 ± 0.092	p = 0.000*

*: Significant