[Canal obturation technic. Stereomicroscopic and SEM study]

The authors compared four different methods for tooths filling employing cements and gutta-percha by means of stereo and scanning electron microscopy. For this they prepared and filled 32 monoradicular teeth divided in 4 groups of 8 elements and afterwards they made sections at 2, 5, 8 mm from the apex. The thermomechanic condensation techniques showed very good effects. Good performances come using the vertical and lateral condensation techniques when the single cone method produced variable results.