  This paper is devoted to study the dynamical behavior of thin-shell composed
of perfect fluid by considering matter field as a scalar field. We formulate
equation of motion of the shell by using Israel thin-shell formalism for a
class of regular black holes as interior and exterior regions. The
corresponding scalar fields and effective potentials are investigated
numerically for both massless and massive scalar fields. We conclude that
massless scalar shell leads to collapse, expansion and equilibrium while the
massive case leads to collapse only.
