Sealing Ability of Endodontic Cements: An In Vitro Study.

Amira Kikly,Saida Sahtout,Sabra Jaâfoura,Dorra Kammoun

doi:10.1155/2020/5862598

Abstract

The root canal system must be obturated using a hermetic seal to prevent the penetration of microorganisms and bacterial toxins into the endodontic system. The principles of adhesive dentistry have been increasingly used in endodontics. In fact, resin-based sealers are increasingly used. The objective of this study was to evaluate, in vitro, the sealing ability of resin cement in comparison with calcium hydroxide-based cement. Materials and Methods. Eighty root canals were prepared with the Tilos system and were randomly divided into four groups according to the filling material. The best combination was evaluated on the basis of its sealing ability. The dye infiltration degree was evaluated using both a stereomicroscope after diaphanization and the dye rise test. Results. A significant difference was observed between the four obturation systems with regard to the number of infiltrated walls (p=0.014) and the infiltration depth (p=0.025). The group of teeth obturated with EndoREZ® and EndoREZ® gutta cones differ significantly from the group obturated with EndoREZ® cement and gutta-percha cones in terms of apical sealing (p=0.011). A significant difference was also observed between the group of teeth obturated using EndoREZ® gutta cones and EndoREZ® cement and the group of teeth obturated with EndoREZ® cement (p=0.026). Conclusion. When used with EndoREZ® gutta cones, EndoREZ® cement showed the best sealing ability, particularly in the apical region. When used with gutta-percha cones, Acroseal and EndoREZ® cements exhibited similar sealing abilities.

Highlights

There is a close relationship between the root canal preparation and obturation, as three-dimensional hermetic filling is related to the root canal trimming and shaping [1]
E root canal system must be obturated using a hermetic seal to prevent the penetration of microorganisms and bacterial toxins into the endodontic system [2]
A root canal filling must essentially consist of a basic material in the form of one or more cones and a root canal filling paste. e function of the latter is to fill the vacuities between the root wall and the cone while maintaining a good dimensional stability [3, 5, 6]

Summary

Materials and Methods

Eighty maxillary and mandibular mono- and biradicular teeth that were caries free and freshly extracted were chosen according to the radiological criterion (absence of pulpal calcification). ese teeth were stored in potassium hypochlorite at 0.9% until the beginning of the operative procedure. ey were randomly divided into four groups. e length of each tooth was determined with precision using a vernier caliper. After preparing the access cavities, the working length was accurately determined on all the root canals using a n° 8-k type file which was introduced at each canal until passing the apical foramen, it was slightly removed up to this level. Later, this length was measured by an endodontic ruler. At the end of the root canal shaping, just before beginning root canal filling, irrigation with EDTA at 17% for 2 min was carried out It was followed by rinsing with distilled water, irrigation with sodium hypochlorite, final rinsing with distilled water, and eventually drying.

Coronal obturation was performed using a composite

EndoREZ cement

Findings

Conclusions