TABLE 3. Results of the Correlation test (r values).

	Correlated Samples
	Internal x External
Brushes	Upper Denture	Lower Denture
Bitufo	0.3846	0.7879
Medic Denture	0.5698	0.8341
Colgate	0.5460	0.7362
	Upper x Lower
	Internal Surface	External Surface
Bitufo	0.5129	0.8298
Medic Denture	0.6350	0.7869
Colgate	0.6206	0.7955