Table 2.

Results of 2-way ANOVA and Post Hoc Tests Comparing Collagen Fiber (%) Between Different Groups and Different Time Points

Groups	Time			P
	Baseline	3 d	7 d
Group 1 (blade + HA)	4.17 ± 0.97 aA	32.07 ± 3.30 cB	50.31 ± 4.17 cC	0.001*
Group 2 (976 nm + HA)	4.05 ± 0.83 aA	29.05 ± 3.17 bcB	45.67 ± 3.43 bcC	0.001*
Group 3 (450 nm + HA)	3.42 ± 0.65 aA	36.33 ± 2.04 dB	54.83 ± 2.52 dC	0.001*
Group 4 (blade only)	3.53 ± 0.53 aA	23.01 ± 3.61 bB	35.67 ± 2.52 aC	0.001*
Group 5 (976 nm only)	4.08 ± 0.65 aA	18.27 ± 1.93 aB	30.16 ± 3.11 aC	0.001*
Group 6 (450 nm only)	4.04 ± 0.65 aA	26.13 ± 3.51 bcB	40.27 ± 4.06 bC	0.001*
P	0.286	0.001*	0.001*

Different small letters indicate significant differences (P < 0.05) among means in the same column. Different capital letters indicate significant differences (P < 0.05) among means in the same row. Data are expressed as mean ± SDs.

^*Significant, P < 0.05; nonsignificant, P > 0.05.