Analysis of remaining tissue after using LA AXXESS® drill in flaring of cervical mesial canals of mandibular molars

Resumo

The objective of this study was to analyze,
in vitro, the remaining tissue at the risk zone in the mesial canals
of the mandibular molars after cervical flaring using LA AXXESS®
drill. Material and methods: Thirty molars were randomly divided
into two experimental groups. Twenty teeth received cervical flaring
using LA AXXESS® drill (group A), and ten were kept as control
group (group B) without undergoing any kind of flaring. The teeth
had their mesial roots cross-sectioned at a 3.5 mm standardized
height apical to the cementum junction. Specimens were scanned
and analyzed by a professional previously trained and calibrated.
In order to measure the distances of the remaining tissue in
relation to the furca, a Photoshop® program ruler version 7.0 was
used. Results and Conclusion: It was possible, through statistical
analysis using Student’s t-test for paired and independent samples
with a 5% significance level, to verify that there was no difference
regarding the remaining tissue at the risk zone between the group
that had cervical flaring and the control group.