Table 2 .

Effects of sildenafil on volume and buffering capacity of saliva

	After clearance tests
Saliva	Basal	Pre-sildenafil	Post-sildenafil
Volume (ml/15 minutes)	13.8 (9.5)	15.2 (8.5)	13.2 (6.3)
pH	6.83 (0.38)	6.87 (0.47)	6.83 (0.43)
Buffering capacity (ml HCl 0.1 N)	0.72 (0.28)	0.68 (0.29)	0.67 (0.27)