Root canal sealing in paraendodontic surgeries – Comparative study between two techniques performed on extracted bovine teeth

Resumo

The objective of this study was to compare the efficiency of the apical sealing of the Lysanda® paste with the single-cone filling technique; Measure the degree of infiltration with methylene blue dye. Forty (40) single-root bovine teeth, straight canals, of similar length, with intact roots and complete risogenesis. Their crowns were removed and all were instrumented with the sequence of files K #25 to K #70 where the apex was surpassed. Afterwards, the teeth were divided into two groups of twenty, and worked as follows: Group I: Endodontic treatment with transsurgical filling of the root canal using the single cone technique with FillCanal® cement and Group II: Endodontic treatment with trans-surgical filling of the root canal using the Lysanda® paste filling technique. Each tooth group was placed submerged in a container containing 2% methylene blue for 7 days. After this period, they were removed and washed with running water and then dried. The teeth were fragmented along well-defined parallel planes with a metal disc and then cleaved. They were evaluated according to their degree of infiltration. The experiment showed favorable results for the paste, which obtained an average infiltration of 2.97 mm in the apical 1/3, an average of less than 4.35 mm in the cone. The Lysanda paste obtained a lower mean than the single cone technique, and can be used in the simultaneous filling technique in the® office during surgery.

DOI:https://doi.org/10.56238/sevened2023.007-054