RESULTS
There was no difference in the initial volume values of the root-end
cavities (P > 0.05). After the insertion of root-end
filling materials, the most significant volumes of empty spaces were
observed in the NeoMTA Plus group (P < 0.05), with no
difference for the BioRoot RCS and MTA Angelus groups (P >
0.05). In descending order, the average percentage of empty spaces for
the experimental groups was 19.9% for NeoMTA Plus, 6.3% for MTA
Angelus, and 4.9% for BioRoot RCS. Table 1 presents the volumes of the
root-end cavities before filling with the root-end filling materials,
the volume of filling material in the root-end cavities, and the
percentage of empty spaces. In contrast, Figure 2 presents the 3D
reconstruction of a sample of each experimental group. In red are empty
spaces inside the root-end filling material and at the dentin-material
interface.