COMPARISON OF APICAL AND CORONAL SEAL OF THE ROOT CANALS OF THE FIRST UPPER MOLARS WITH COLD LATERAL CONDENSATION TECHNIQUE AND THE USE OF TWO TYPES OF SEALERS IN VITRO

Abstract

The aim of the research. To compare the quality of the apical seal of the root canals of the first upper molars with a differentiated and traditional approach to the treatment of the apical part of the root canal, with cold lateral condensation technique and the use of zinc-oxideeugenol sealer and sealer based on epoxy resins, as well as to determine the permeability of the root canals after obturation with additional sealing of their orifices with glass ionomer cement and without it. Research materials and methods. Extracted teeth, namely upper first molars without previous endodontic intervention, were used for the study. Endodontic preparation was carried out according to the proposed and traditional method, with the following filling of canals using zinc-oxide-eugenol sealer and sealer based on epoxy resins with a cold lateral condensation technique. In addition, in one of the groups, additional sealing of the orifices of the root canals was carried out using glass ionomer cement. The evaluation of sealing of the apical part of the canal was carried out on cross sections of the roots, which were made at a distance of 1 to 5 mm from the apex. After that, the area of the dyed surface was determined on the pictures using the ImageJ program. Sectoral determination of apical dye penetration was also carried out. To determine the depth of dye penetration in the orifice part, longitudinal sections were made on each of the first upper molar roots and digital images were taken, with further analysis in the ImageJ program. Scientific novelty. During the laboratory determination of the apical and coronal seal of the root canals of the first upper molars, it was found that when using the proposed method of processing root canals, the depth of apical dye penetration is significantly lower, compared to the traditional way. Also, the area of staining and % dye penetration is lower in this group. Conclusions. It has been established that sealing efficiency depends on the anatomical shape of the root canal and the method of its processing. It was found that with additional sealing of the orifice part of the root canals with glass-ionomer cement, the depth of dye penetration is significantly lower than in the absence of sealing.