Microscopic analysis of the quality of obturation and physical properties of MTA Fillapex

Pablo Andrés Amoroso-Silva, Bruno Martini Guimarães, Marina Angélica Marciano, Marco Antonio Hungaro Duarte, Bruno Cavalini Cavenago, Ronald Ordinola-Zapata, Marcela Milanezi De Almeida, Ivaldo Gomes De Moraes

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

This study analyzed the quality of obturation and physical properties of MTA Fillapex and AH Plus sealer. A sample of 30 human maxillary central incisors were instrumented with Protaper until a F5 (50/05) file. Both sealers were mixed with Rhodamine-B dye to allow visualization on a confocal laser-scanning microscope (CLSM). Next, the canals were filled using the single cone technique. After setting, all samples were sectioned at 2, 4, and 6 mm from the apex. CLSM was used to analyze the gaps and sealer penetration into the dentinal tubules. All samples were scanned 10 μm below the dentin surface and images were recorded at 100× magnification using the fluorescent mode. Additionally, the solubility, flowability and setting time of the sealers were evaluated. All the measured quantities of the examined materials were evaluated for significant differences by means of statistical analysis. The CLSM analysis of the MTA Fillapex showed the highest percentage of gaps at all sections (P = 0.0001). Physical tests revealed adequate properties for both sealers except for a higher solubility of the MTA Fillapex (P = 0.0001). The MTA Fillapex presented flowability and intratubular penetration similar to the AH Plus. Nevertheless, the MTA Fillapex sealer presented a higher solubility and considerable quantity of gaps between the sealer/dentin interface in relation to the AH Plus sealer. Clinicians must take into consideration, the quality of endodontic sealers as it is essential in the outcome of the root canal filling. Microsc. Res. Tech. 77:1031-1036, 2014.

Original languageEnglish (US)
Pages (from-to)1031-1036
Number of pages6
JournalMicroscopy Research and Technique
Volume77
Issue number12
DOIs
StatePublished - Dec 1 2014
Externally publishedYes

Keywords

  • Confocal microscopy
  • MTA Fillapex
  • Physical properties

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