Abstract
Attainment of ideal root canal treatment comprises various essential factors such
as proper instrumentation, biomechanical preparation, obturation, and ultimately depending
upon the case, post-endodontic restoration. Main objective of the treatment is to
get absolute rid of microbial entity and prevent any future predilection of re-infection.
In order to achieve that, proper seal is required to cut down any chance of proliferation
of bacteria and future occurrence of any pathology. Although gutta-percha has been
the standard obturating material used in root canal treatment, it does not reinforce
endodontically treated roots owing to its inability to achieve an impervious seal
along the dentinal walls of the root canal. Gutta-percha does not from a monoblock
even with the use of a resin-based sealer such as AH Plus because the sealer does
not bind to gutta-percha. As a result, a monoblock is formed (consisting of Resilon
core material, Resin sealer, bonding agent/primer, and dentin). Another reason of
Resilon being a better obturating material could be that the removal of smear layer
by ethylenediaminetetraacetic acid (EDTA) after biomechanical preparation may have
allowed the root canal filling material and root canal sealers to contact the canal
wall and penetrate in the dentinal tubules, which may increase the strength of roots.
New silicone-based sealers like Roekoseal automix and the most recent GuttaFlow have
some affirmative results regarding solubility and biocompatibility, as compared to
other sealers. Methacrylate resin-based sealers and mineral trioxide aggregate (MTA)-based
sealers have opened a new horizon for sealers.
Keywords
Biocompatibility - contemporary sealers - cytotoxicity - leakage - monoblock