Comparative characteristic of the effectiveness of instrumental treatment of teeth with a C-shaped root canal

Abstract

Aim. Compare the effectiveness of dental instrumentation with a C-shaped root canal system with two different endodontic systems: XP-endo and Gentlefile. Materials and methods. The study was performed on 30 teeth removed by medical reasons (18 premolars and 12 second molars of the lower jaw). Samples were divided randomly into 2 equal groups. Separately, three C-shaped mandibular premolars were processed with XP-endo and Gentlefile systems and manual steel files for scanning electron microscopy. For comparison, one rough premolar was taken. The C-shaped configuration was confirmed by cone-beam computed tomography. The quality of endodontic treatment of root canals was assessed by the microstructure of the surface of the root dentin using a scanning electron microscope, as well as the depth of penetration of the dye into various zones of the root dentin. When working with the XP-endo system, the mean value of the area of stained dentin in the apical third was 11.56 ± 3.15, in the middle – 37.65 ± 9.3, in the coronal – 45.3 ± 12.3. In the Gentlefile group, the painted area of root dentin in the apical third was on apical 3.5 ± 1.39, in the middle- 8.5 ± 2.42, in the coronal – 12.8 ± 1.65. Differences are significant (p ≤ 0.05). SEM photographs of samples of the treated Gentlefile showed coarser dentinal surfaces, the presence of a smeared layer, fewer open dentinal tubules than by XP-endo. Results of the study showed that the endodontic system XP-endo better treats the surface of the dentin root canals with the C-shaped configuration, compared with the Gentlefile.

Keywords

• с-образные каналы, эндодонтическое лечение, gentlefile, xp-endo, сканирующий электронный микроскоп