The explosion mechanism associated with thermonuclear supernovae (SNIa) it;
still a matter of debate. In this paper we examine the gamma-ray emission
of the radioactive debris predicted by the different theoretical models and
, using response estimations of the SPI and IBIS instruments aboard of INTE
GRAL, we evaluate the capabilities of such instruments in the study of SNIa
, We also discuss preliminary results obtained with 3D models.