The purpose of the investigation was, to compare the marginal seal of direct restorations, carried out with the sandwich technique, after the removal of decayed tissue by means of papaine gel (Papacarie) and the conventional rotational method. So, 20 recently extracted human premolars were selected, with decay lesions that committed the oclusal and proximal surface. The sample was randomly divided in two groups: Group 1: the removal of decayed dentine was made, by means of the chemo mechanical technique using the gel Papacarie. Group 2: the removal of decayed dentine was made by means of the conventional technique, using rotational instruments. After the removal of decayed tissues by both techniques a direct restoration was placed using the sandwich technique, placement of glass ionomer modified by resin, adhesive system of a single step and micro hybrid composite resin. Then, after term...

The purpose of the investigation was, to compare the marginal seal of direct restorations, carried out with the sandwich technique, after the removal of decayed tissue by means of papaine gel (Papacarie) and the conventional rotational method. So, 20 recently extracted human premolars were selected, with decay lesions that committed the oclusal and proximal surface. The sample was randomly divided in two groups: Group 1: the removal of decayed dentine was made, by means of the chemo mechanical technique using the gel Papacarie. Group 2: the removal of decayed dentine was made by means of the conventional technique, using rotational instruments. After the removal of decayed tissues by both techniques a direct restoration was placed using the sandwich technique, placement of glass ionomer modified by resin, adhesive system of a single step and micro hybrid composite resin. Then, after term...