Comparison of the apical seal obtained by Adseal, Proseal, and AH26 sealers in root canal obturation with lateral compaction technique

Abstract

Background: Root canal obturation is an important step in endodontic treatment, which is
performed aiming to three-dimensionally seal the canal and prevent microleakage, reentry, and
proliferation of microorganisms in the root canal system. On the other hand, microleakage eventually
leads to root canal treatment failure. Sealing ability is an important property of endodontic sealers.
This in vitro study aimed to compare the quality of apical seals obtained by three endodontic sealers.
Materials and Methods: This in vitro experimental study evaluated 48 extracted single-canal
maxillary incisors. Hard- and soft-tissue residues were removed and the teeth were immersed in
5.25% of sodium hypochlorite for disinfection. The teeth were decoronated at the cementoenamel
junction with a diamond disc such that 10 mm of root length remained. Canal patency was ensured
using a #10 K-file. The canals were then instrumented with ProTaper rotary system. The canals were
randomly divided into three experimental groups for the application of Adseal, Proseal, and AH26
sealers, and positive and negative control groups. Sealers were applied in the canals using lateral
compaction technique. The external root surfaces were then coated with two layers of nail varnish
except for the apical 3 mm. The amount of microleakage was quantified using the dye-penetration
technique. The Tukey’s test was used to compare the microleakage between the experimental and
control groups. The Kruskal–Wallis test was applied to compare the microleakage of experimental
groups (P < 0.05).
Results: The amount of microleakage in canals filled with Adseal, Proseal, and AH26 sealers with
lateral compaction technique was 2.33 ± 0.64, 2.2 ± 0.81, and 2.22 ± 0.71 μm, respectively. No
significant difference was noted among the three sealers regarding microleakage (P = 0.84). However,
the amount of microleakage in the sealer groups was significantly lower than that in the control
group (P < 0.001).
Conclusion: The application of Adseal, Proseal, and AH26 had equal efficacy for the provision of
optimal apical seal in filling of root canals with lateral compaction technique. The application of
sealers yielded a significantly superior apical seal compared with the control group.
Key Words: Epoxy resin AH‑26, gutta‑percha, root canal obturation

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Romina Hajipour: Pubmed,Google Scholar