Smokers (n=54) Snuffers (n=60) Chewers (n=60) Non- consumers (n=60) p Salivary α-amylase (x 104UI/L) 17.34 ± 17.00 9.90 ± 9.44 5.61 ± 5.38 8.73 ± 6.14 <0.001 Serum α-amylase (UI/L) 110.53  ± 73.35 109.69 ± 58.20 92.63 ± 48.84 120.15 ± 71.98 0.1

Table 2: Average values (± standard deviation) of salivary and serum alpha-amylase activity of the study population.