Analysis of sealing ability of endodontic cements apical plugs

Abstract

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.

Apical Sealing Ability of Two Calcium Silicate-Based Sealers Using a Radioactive Isotope Method: An In Vitro Apexification Model

“…Nevertheless, the values of infiltration were significantly lower than the positive control, thus corroborating the fact that MTA have suitable sealing ability. This is in agreement with previous studies that state that the incidence of leakage in MTA apical plug is related to the presence of failures within the sealer, at the sealer-dentin interface, and/or by the presence of pores [56].…”

Efficacy of Mineral Trioxide Aggregate and Biodentine as Apical Barriers in Immature Permanent Teeth: A Microbiological Study

“… 23 Similar to MTA, its bioactivity has been evidenced by the precipitation of hydroxyapatite and the formation of tags that penetrate the dentinal tubules. 26 Biodentine is comparable to MTA except for zirconium oxide being added to its powder component. The larger particle size, incorporation of calcium chloride to the liquid constituent, and reducing the overall liquid component contributes to a decreased setting time approximating 12 minutes.…”

“…In studies by Ayatollahi et al 27 and Nabavizadeh et al, 28 Peeso Reamer drills were used to simulate open apex conditions. Cechella et al 26 created a standardized open apex using the #6 Gates-Glidden drill. In the present study, root end preparation was done using a bur as in the study by Kim et al 29 to simulate an open apex with thin dentinal walls.…”

“…Cechella et al 26 evaluated the sealing ability provided by biodentine and MTA apical plugs, with or without phosphate-buffered saline (PBS) intracanal dressing, using a glucose leakage method. They concluded that biodentine had lower sealing ability than MTA.…”

Biodentine™ – use in dentistry. Literature review

“…In 6 and 12 month long observation periods, Biodentine™ showed better root apex closing properties and dentine thickness than MTA [44]. Moreover, it was found that Biodentine™ at 4 mm thickness applied in the apical area of the root shows good impermeability, though less than that of MTA [45,46]. Revitalization procedures, being a part of regenerative endodontics, became an alternative to apexification in immature teeth after pulp necrosis.…”