Changes in the surface of four calcium silicate‐containing endodontic materials and an epoxy resin‐based sealer after a solubility test

Borges, R. P.; Sousa‐Neto, Manoel Damião; Versiani, Marco Aurélio; Rached-Junior, Fuad Jacob Abi; De‐Deus, Gustavo; Miranda, Carlos Eduardo Saraiva; Pécora, Jesus Djalma

doi:10.1111/j.1365-2591.2011.01992.x

Cited by 188 publications

(227 citation statements)

References 29 publications

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“…In the present study, MTA Fillapex high dissolution rate was demonstrated in all tested periods. Similar results have been previously reported (21) showing that this material has a higher dissolution rate than the 3% recommended by ISO specification (ISO 10993-5). This higher dissolution rate may account for a greater sealer particles release during the elution in DMEM, resulting in a higher exposition of MTA Fillapex and a mechanical aggression to the cell culture.…”

Section: Resultssupporting

confidence: 80%

Long-Term Cytotoxicity, pH and Dissolution Rate of AH Plus and MTA Fillapex

et al. 2016

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The aim of the present study was to verify the long-term cytotoxic effects of the MTA Fillapex and to compare them with AH Plus. Dissolution rate and pH were also evaluated. Human osteoblast cells were incubated with elutes of fresh specimens from AH Plus and MTA Fillapex, and with elutes of the same specimens for 4 successive weeks. Elute's pH was evaluated at each time point. A multiparametric cell viability assay was performed. For dissolution rate, ISO methodology was used. The results were analyzed by one-way analysis of variance, complemented with the Tukey post-test (p<0.05). No significant difference was found among the materials when fresh mixed (p>0.05). After 1 week, AH Plus became non-cytotoxic on all three evaluated parameters. Conversely, MTA Fillapex remained severely and mildly cytotoxic over the entire experimental period (p<0.05). The dissolution rate of AH Plus was significantly lower than MTA Fillapex at all time points (p>0.05). The pH of AH Plus was significantly lower than MTA Fillapex at the second and third week (p<0.05). In the other tested time points no statistical difference was observed.In conclusion, MTA Fillapex remained cytotoxic after 4 weeks and its cytotoxicity may be related to the high dissolution rate of this material.

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Section: Resultssupporting

confidence: 80%

Long-Term Cytotoxicity, pH and Dissolution Rate of AH Plus and MTA Fillapex

et al. 2016

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“…MTA Fillapex and Sankin Apatite III contain polymers susceptible to polymerization shrinkage. Moreover, despite the manufacturer of EndoSequence BC claiming that the product contains no polymers, independent researchers had identified the presence of carbon polymer which had not been previously reported by the manufacturer 36) . EDTA (17%) was used as an irrigant in this study, as it had been demonstrated to decrease the wetting ability of dentinal walls 37) , thereby producing an environment suitable for the adhesion of hydrophobic materials such as AH Plus.…”

Section: Discussionmentioning

confidence: 99%

“…The superior adaptation of AH Plus could be due to its ability to bond to root dentin chemically by reacting with any exposed amino groups in collagen to form covalent bonds between the epoxy resin and collagen 28) . Unlike alkaline bioceramic-based sealers 36) , AH Plus is slightly acidic and might result in selfetching when in contact with dentin, thereby enhancing interfacial bonding and adaptation 37) . Furthermore, the alkaline nature of many bioceramic by-products has been reported to denature dentinal collagen fibers, which then facilitated the penetration of sealers into the dentinal tubules 12) .…”

Section: Discussionmentioning

confidence: 99%

Interfacial adaptation and thickness of bioceramic-based root canal sealers

2015

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This study evaluated and compared the sealer thickness and interfacial adaptation of bioceramic sealers (Sankin Apatite III, MTA Fillapex ® , EndoSequence ® BC) to root dentin against AH Plus ® sealer. Sixty extracted single-root premolars were prepared and equally divided into four groups. Sealers were labeled with 0.1% Rhodamine B fluorescent dye. Roots were dissected along the transverse plane at 1 mm (apical), 3 mm (middle), and 6 mm (coronal) levels. Sealer-to-whole canal area ratio was evaluated. Percentage of gap-containing region to canal circumference was calculated using a confocal laser microscope. Sealer thickness was significantly higher at apical and middle levels than at coronal level. EndoSequence BC had the significantly highest thickness compared with MTA Fillapex and AH Plus. The coronal level had significantly less interfacial gaps compared with apical and middle levels. Bioceramic sealers showed more gaps compared with AH Plus, with no significant differences among them.

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“…The resin components of MTA Fillapex might adversely affect its bonding to dentin and sealing properties (30). Using scanning electron microscopy, Barges et al (31) found that exposing MTA Fillapex specimens to deionized water results in porosities and cracks in the resin matrix. Energy-dispersive spectroscopy confirmed this polymer degradation and a decrease in the carbon element.…”

Section: Discussionmentioning

confidence: 99%

Effect of the smear layer on apical seals produced by two calcium silicate-based endodontic sealers

et al. 2014

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We compared the apical seals of two new calcium silicate-based sealers (iRoot SP and MTA Fillapex) in the presence and absence of a smear layer. Eighty-two human premolars were prepared and randomly divided into four groups. In groups 1 and 3, the smear layer was retained. In groups 2 and 4, the root canals were irrigated with EDTA to remove the smear layer. Canals were filled using gutta-percha/iRoot SP (in groups 1 and 2) or obturated with gutta-percha/MTA Fillapex (in groups 3 and 4). Fluid filtration was used to evaluate apical microleakage. The presence of the smear layer had no significant effect on the sealing properties of the filling materials, except for iRoot SP at 2 weeks (P = 0.007). There was significantly less microleakage with iRoot SP than with MTA Fillapex (P = 0.025 at 2 weeks; P < 0.001 at 3 months). Leakage decreased significantly over time in all specimens, except in group 2 (P = 0.473). In conclusion, removal of the smear layer had no adverse effect on the sealing properties of calcium silicate-based sealers. In addition, the sealing ability of iRoot SP was superior to that of MTA Fillapex. (J Oral Sci 56, 215-219, 2014)

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Changes in the surface of four calcium silicate‐containing endodontic materials and an epoxy resin‐based sealer after a solubility test

Cited by 188 publications

References 29 publications

Long-Term Cytotoxicity, pH and Dissolution Rate of AH Plus and MTA Fillapex

Long-Term Cytotoxicity, pH and Dissolution Rate of AH Plus and MTA Fillapex

Interfacial adaptation and thickness of bioceramic-based root canal sealers

Effect of the smear layer on apical seals produced by two calcium silicate-based endodontic sealers

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