The sealing ability of MTA apical plugs exposed to a phosphate-buffered saline

Almeida, Josiane de; Alves, Ana Maria Hecke; Melo, Roberto Ferreira de; Felippe, Mara Cristina Santos; Bortoluzzi, Eduardo Antunes; Teixeira, Cleonice da Silveira; Felippe, Wilson Tadeu

doi:10.1590/1678-775720130023

Cited by 6 publications

(11 citation statements)

References 27 publications

(49 reference statements)

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“…Several methods have been used to evaluate the sealing ability of endodontic materials ( 12 - 14 ). However, none of these methods is able to reproduce the situations observed in vivo ( 15 ).…”

Section: Discussionmentioning

confidence: 99%

“…The procedures were performed as described by Almeida, et al ( 12 ). The crowns were sectioned, and a 2 mm root tip resection was performed with a high-speed bur under cooling water, so that all root segments were about 12 mm long.…”

Section: Methodsmentioning

confidence: 99%

“…The root segments were fixed in a device designed to test glucose leakage [adapted from Leal, et al ( 13 ) and Almeida, et al ( 12 ) (Fig. 1 ).…”

Section: Methodsmentioning

confidence: 99%

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Analysis of sealing ability of endodontic cements apical plugs

et al. 2018

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BackgroundIt is unknown whether the bioactivity of Biodentine characterized by the precipitation of hydroxyapatite and formation of tags into the dentinal tubules improve its sealing ability as an apical plug. Aim: To evaluate the sealing ability provided by Biodentine and mineral trioxide aggregate (MTA) apical plugs, with or without phosphate-buffered saline (PBS) intracanal dressing, using a glucose leakage method.Material and MethodsThe space of the canal of 100 root segments with about 12 mm long was shaped using Gates-Glidden. After created an apical retrograde cavity, the root segments were randomly divided into 4 groups (n = 25): G1 – Biodentine; G2 - Biodentine + PBS intracanal dressing; G3 - MTA and G4 - MTA + PBS intracanal dressing. All access openings were filled with temporary cement and all root segments were introduced in floral foams moistened with PBS. After 2 months, all root segments were prepared to evaluate the glucose leakage. The amount of glucose leakage was quantified by a spectrophotometer and the data were analyzed using chi-square test (p<0.05).ResultsTraces of the glucose were observed in a higher of samples that received Biodentine apical plug (p<0.05). The exposure to intracanal PBS did not influence the sealing provided by Biodentine and MTA.ConclusionsThe Biodentine had lower sealing ability than MTA. The interaction with PBS intracanal dressing did not improve the sealing ability provided by sealers. Key words:Apexification, dental cements, dental leakage, glucose, pressure.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Analysis of sealing ability of endodontic cements apical plugs

et al. 2018

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“…On the other hand, for the 30-day period, no difference was observed among the solubility of the materials. One possible reason for the sealing ability of MTA is its slight expansion after setting 1 , 16 , 28 , which enhances its ability to seal. Another possibility is related to the deposition of crystals in the interface of MTA and calcium silicate cements, increasing the marginal adaptation.…”

Section: Discussionmentioning

confidence: 99%

Solubility and bacterial sealing ability of MTA and root-end filling materials

et al. 2016

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Objective To evaluate solubility and sealing ability of Mineral Trioxide Aggregate (MTA) and root-end filling materials.Material and Methods The materials evaluated were: MTA, Calcium Silicate Cement with zirconium oxide (CSC/ZrO2), and zinc oxide/eugenol (ZOE). Solubility test was performed according to ANSI/ADA. The difference between initial and final mass of the materials was analyzed after immersion in distilled water for 7 and 30 days. Retrograde cavities in human teeth with single straight root canal were performed by using ultrasonic tip CVD 9.5107-8. The cavities were filled with the evaluated materials to evaluate sealing ability using the bacterial leakage test with Enterococcus faecalis. Bacterial leakage was evaluated every 24 hours for six weeks observing the turbidity of Brain Heart infusion (BHI) medium in contact with root apex. Data were submitted to ANOVA followed by Tukey tests (solubility), and Kruskal-Wallis and Dunn tests (sealing ability) at a 5% significance level.Results For the 7-day period, ZOE presented highest solubility when compared with the other groups (p<0.05). For the 30-day period, no difference was observed among the materials. Lower bacterial leakage was observed for MTA and CSC/ZrO2, and both presented better results than ZOE (p<0.05).Conclusion MTA and CSC/ZrO2 presented better bacterial sealing capacity, which may be related to lower initial solubility observed for these materials in relation to ZOE.

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“…Different methods have been used to test the sealing ability of MTA or PC used as apical barriers including dye leakage [14,15], bacterial penetration [16][17][18], glucose leakage [15,19], capillary flow porometry [20] and fluid transport [21,22]. Some of these studies [20][21][22] indicate similar sealing properties of MTA and PC apical barriers, although the use of different methodologies makes it difficult to compare the results.…”

Section: Introductionmentioning

confidence: 99%

Polymicrobial Leakage and Retention of MTA and Portland Cement in a Model of Apexification

Brito-Júnior

Sá

Nobre

et al. 2019

Pesqui. bras. odontopediatria clín. integr.

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Objective: To evaluate the sealing capacity and retention of apical barriers made with mineral trioxide aggregate (MTA) and Portland cement (PC). Material and Methods: Fifty-six bovine incisors were sectioned 8 mm above and 12 mm below the cement-enamel junction. The root canal was enlarged with a diamond drill to create a standard 2.5 mm diameter opening. Apical sheets of 5 mm thickness were placed using white MTA-Angelus or white PC. Fifteen samples of each material were exposed to human saliva in a dual chamber apparatus and casting was evaluated at 30 days. Samples without apical barriers and fully sealed samples were used as positive and negative controls (n = 3), respectively. Data were analyzed by Fisher's exact test (p<0.05) after 3 periods: 1 to 10 days (P1); days 11 to 20 (P2); and days 21 to 30 (P3). Then, three 1 mm thick sections were obtained at the apical level of other root samples of each material (n = 10) and the push-out test was performed. Results: The leakage rates in P1, P2 and P3 were 60%, 73.3% and 100% for the MTA; and 73.3%, 86.7% and 100% for CP, with no significant difference between materials, regardless of the period analyzed. There were no significant differences between the bond strengths for both cements (p>0.05). Conclusion: Mineral trioxide aggregate and Portland cement apical barriers presented similar sealing ability and bond strength values.

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The sealing ability of MTA apical plugs exposed to a phosphate-buffered saline

Cited by 6 publications

References 27 publications

Analysis of sealing ability of endodontic cements apical plugs

Analysis of sealing ability of endodontic cements apical plugs

Solubility and bacterial sealing ability of MTA and root-end filling materials

Polymicrobial Leakage and Retention of MTA and Portland Cement in a Model of Apexification

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