Abstract
In this study, we observed comminution behavior
of food on buccal and lingual side by sieve method.
Six dentate subjects participated in this study.
Peanuts were used as the test food and chewed
for1-8, 10, 12, 14, 16, 18, 20, 22 and 24 strokes
on their preferred chewing side. Peanuts were
gathered separately from buccal and lingual
sides after varying number of chewing strokes.
The crushed peanuts were sieved through a
stack of eight level sieves (0.85 to 5.6mm). The
comminution of coarse particles above 4.75
mm was almost finished within 10 strokes. The
dynamic change in the median particle size also
disappeared about 10 strokes. This suggested
that we should pay attention to the initial phase of
the chewing when we observed about mastication.
As a result, comminution behavior of lingual
coarse particles better conformed to fluctuation of
median particle sizes of whole mouth, expressing
masticatory performance precisely, than that of
buccal coarse particles.
