Evaluation marginal adaptation of root-end filling materials using scanning electron microscopy
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Data
2013
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Resumo
Introduction: The importance of perfect apical seal in endodontics, more specifically in
periradicular surgery, is the motivation/reason for development of root-end filling materials
with favorable physical, chemical and biological characteristics. The aim of this in vitro study
was to evaluate the marginal adaptation of root-end filling materials using scanning electron
microscopy. Materials and Methods: Twenty five human maxillary anterior teeth were
prepared using a K-File #50 to 1 mm short of the apical foramen and filled with gutta-percha
and Sealapex using the lateral compaction technique. The apical 3 mm of the roots were
sectioned perpendicularly to the long axis of the teeth. A 3-mm-deep root-end cavity was
prepared using ultrasonic tips powered by an Enac ultrasonic unit. The teeth were randomly
assigned to five groups according to the materials tested including IRM, amalgam, ProRoot
MTA, Super-EBA and Epiphany/Resilon. Root-end cavities were filled with the materials
prepared according to the manufacturers’ instructions. The root apices were carefully
prepared for sputter coating and later evaluation using Scanning Electron Microscope (SEM).
The images of root-end fillings were divided into four quadrants and distributed into five
categories according to the level of marginal adaptation between the root-end material and the
root canal walls. The Fisher exact test with Bonferroni correction was used for statistical
analysis. The level of significance was set at P=0.005. Results: SEM images showed the
presence of gaps in the root-end filling materials. No significant difference was observed
between the tested materials (P>0.005). Conclusion: ProRoot MTA, IRM, amalgam, Super-
EBA and Epiphany/Resilon showed similar marginal adaptation as root-end filling materials.
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Marginal adaptation, Scanning electron microscopy, MTA, Root canal filling materials
Citação
OLIVEIRA, Helder Fernandes et al. Evaluation marginal adaptation of root-end filling materials using scanning electron microscopy. Iranian Endodontic Journal, Tehran, v. 8, p. 182-186, 2013.