Table 3.

Comparison of colour variation of Revotek LC at three separate time intervals

Time	Material	N	Mean	Std. deviation	Mean square	F	Sig.	Post hoc
1 week	Untreated specimen	10	0.0249	0.004818	0.000	1.623	0.201	0.416
	Synthetic saliva	10	0.0301	0.009927				0.240
	Syn + hexidine	10	0.0313	0.007304				0.266
	Syn + periogard	10	0.0311	0.006967				0.984
	Total	40	0.02935	0.007655				0.991
1 month	Untreated specimen	10	0.0309	0.017867	0.000	0.120	0.948	1.000
	Synthetic saliva	10	0.0324	0.015841				0.998
	Syn + hexidine	10	0.0361	0.029983				0.938
	Syn + periogard	10	0.0337	0.012401				0.989
	Total	40	0.033275	0.019449				0.976
3 months	Untreated specimen	10	0.2121	0.065212	0.021	5.314	0.004	0.999
	Synthetic saliva	10	0.3003	0.046992				0.993
	Syn + hexidine	10	0.3124	0.044672				0.018
	Syn + periogard	10	0.2965	0.086374				0.006
	Total	40	0.280325	0.0728				0.025