Table 3.

Numerical Colour Change.

	Ceramic	Zircon	Composite	Flowable composite	Gic	Natural tooth
Week 1	1.36	2.50	15.87	9.68	3.86	10.38
Week 2	4.47	2.21	9.77	4.55	5.50	5.70
Week 3	3.40	0.84	18.29	4.67	3.47	4.12
Week 24	0.40	5.94	7.32	7.93	5.01	3.28