Comparison of Apical Sealing in Root Canal-Treated Teeth Using Gutta-Percha with Bio-C Sealer, EndoSeal TCS Sealer, and AH Plus Sealer by the Single-Cone Technique

Background: This study aimed to compare the apical seal in teeth treated with gutta-percha and Bio-C sealer, Endoseal TCS sealer, and AH Plus sealer using the single-cone technique.Methods: In this experimental study, 56 single-rooted, single-canal mandibular premolars were prepared using the Protaper rotary system.The samples were randomly divided into three groups of 16 and two positive and negative control groups and were obturated with Bio-C sealer, Endoseal TCS sealer, and AH Plus sealer using the single-cone technique.The samples were divided into buccal and lingual halves using a diamond disc.The linear leakage of methylene blue from the root apex to the coronal-most part where the dye penetrated was observed and recorded using a stereomicroscope, and finally the data obtained were analyzed using one-way analysis of variance between groups with SPSS version 26 software. Results:The results of the study showed that the lowest dye penetration rate in the sealers studied was for Endoseal TCS sealer (4.160.475),AH Plus (4.840.745),and Bio-C sealer (5.770.597).The results of the analysis of variance showed that there was a significant difference in apical microleakage in teeth treated with gutta-percha and Bio-C sealer, Endoseal TCS sealer, and AH Plus sealer by the single-cone technique (p<0.001).Tukey's test showed that there was a significant difference in apical microleakage of the sealers studied with the positive and negative control groups; also, a significant difference was observed in apical microleakage of Endoseal TCS sealer with Bio-C Sealer and AH Plus sealer, and Bio-C Sealer with AH Plus sealer (p<0.05).Conclusion: Apical sealing in root canal-treated teeth with gutta-percha and Endoseal TCS sealer provided the best results compared to AH Plus and Bio-C sealer.