Study of the penetration depth into dentin of sealers based on epoxy resins and eugenol during root canal filling using the partially coherent interference method

Objective. To study the depth of penetration into the dentin of root canals of teeth sealer for filling root canals partially coherent interferential tomograph. Material and methods. Studied instrumentally and medicamentally treated root canals of seven removed according to clinical indications permanent teeth before obturations and after their filling by the method of lateral compaction of gutta-percha pins with the use of sealer based on epoxy resins and eugenol. The teeth were divided into 3 groups. In group 1, root canal obturation was performed using the AN Plus sealer (based on epoxy resins); in group 2, using the Vyadent sealer (based on epoxy resins); and in group 3, using the Tiedent zinc oxide eugenol cement as the sealer. The reflection coefficient was measured in 20 root canals. A partially coherent interferometric tomograph was used to study the penetration of the dental sealer into the hard tissues of the tooth roots. The study involved. sections of tooth roots corresponding to the boundaries of the mouth and middle third of the root canals. Results. The dependence of the reflection coefficient on the depth of the hard tissues of each sample’s root was obtained after instrumental and medicamentous treatment of the root canal before and after obturation. It has been established that the AH-Plus epoxy-amine sealer from Dentsply penetrates 50 to 100 microns deeper into the hard tissues of the tooth root canal than the Vyadent and Tiedent sealer from VladMiVa. The Tiedent zinc oxide eugenol filling material demonstrated better penetration into the dentin structure of the root canal compared to the Vyadent epoxy-based sealer. All of the tested sealants had a penetration depth of at least 200 microns. Conclusion. All the presented samples can be used to fill root canals without compromising the quality of restoration.