Effect of calcium hydroxide dressing on push-out bond strength of endodontic sealers to root canal dentin

Guiotti, Flávia Angélica; Kuga, Milton Carlos; Duarte, Marco Antônio Húngaro; Júnior, Arnaldo Sant'Anna; Faria, Gisele

doi:10.1590/s1806-83242014.50000002

Cited by 46 publications

(50 citation statements)

References 29 publications

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“…25,26 According to the present results, the epoxy resinbased sealer showed significantly higher dislocation resistance than the methacrylate resin-and mineral trioxide aggregate-based sealers, ranking second among the sealers tested. This result corroborates those of previous studies 26,27 showing that the epoxy resin-based sealer had significantly higher bond strength to radicular dentin than the tested methacrylate resin-and mineral trioxide aggregate-based sealers. The results obtained with the epoxy-resinbased sealer may be associated with its low shrinkage during the setting phase, as well as its long-term dimensional stability.…”

Section: Discussionsupporting

confidence: 92%

Bond strength of a calcium silicate-based sealer tested in bulk or with different main core materials

et al. 2014

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Bond strength of a calcium silicatebased sealer tested in bulk or with different main core materials Abstract: The aim of this study was to evaluate the influence of a calcium silicate-based sealer (iRoot SP), with or without a core material, on bond strength to radicular dentin, in comparison with various contemporary root filling systems. Root canals of freshly extracted singlerooted teeth (n = 60) were instrumented using rotary instruments. The roots were randomly assigned to one of the following experimental groups: (1) a calcium silicate-based sealer without a core material (bulk-fill); (2) a calcium silicate-based sealer + gutta-percha; (3) a calcium silicate-based sealer + Resilon; (4) a methacrylate resin-based sealer (RealSeal SE) + Resilon; (5) an epoxy resin-based sealer (AH Plus) + gutta-percha, and (6) a mineral trioxide aggregate-based endodontic sealer (MTA Fillapex) + gutta-percha. Four 1-mm-thick sections were obtained from the coronal aspect of each root (n = 40 slices/group). Push-out bond strength testing was performed at a cross-head speed of 1 mm/min, and the bond strength data were analyzed statistically by one-way analysis of variance and Tukey tests (p < 0.05). The highest and lowest debonding values were obtained for the calcium silicate-based sealer bulk-fill and mineral trioxide aggregate-based endodontic sealer + gutta-percha groups, respectively (p < 0.05). It was concluded that the calcium silicate-based sealer showed higher resistance to dislocation in the bulk-filled form than in conjunction with the tested core filling materials. When the calcium silicate-based sealer was placed in bulk, its dislocation resistance was similar to that of commonly used sealer + core root filling systems. Thus, the concept of using a calcium silicatebased sealer in bulk can be more easily advocated in clinical practice.

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Section: Discussionsupporting

confidence: 92%

Bond strength of a calcium silicate-based sealer tested in bulk or with different main core materials

et al. 2014

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“…This result corroborates those of previous studies showing that the epoxy resin-based sealer had significantly higher bond strength to radicular dentin than the tested mineral trioxide aggregate-based sealers (22,23) .…”

Section: Discussionsupporting

confidence: 92%

Dentin Bond Strength Evaluation of Three Root Canal Sealers with Cold Gutta-Percha Lateral Obturation Technique: Push-Out Test Study

2017

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Aim: This study was designed to evaluate dentin bond strength by push-out test of three root canal sealers (IRoot SP, AH Plus, and MTA Fillapex endodontic sealers) with cold gutta-percha lateral obturation technique using push-out test. Methods: A total of 57 human freshly extracted mandibular premolar teeth for orthodontic reason were used in this study. All samples were decoronated 16±1mm from the apex and prepared using step-back technique up to master apical file # 40. The specimens were divided randomly into three groups (19 teeth each) according to the type of sealers used; Group 1(IRoot SP), Group 2(AH Plus sealer), and Group 3 (MTA Fillapex sealer). Each group was obturated with cold gutta-percha lateral obturation technique. The specimens were incubated for 7 days at 37 o C with 100% humidity. Three sections of 2 mm thickness were obtained at 3, 7 and 11mm from the apex to represent apical, middle and coronal third respectively. The push-out bond strength was determined for each root slice. Values were recorded, tabulated for each group and statistically analyzed. Results: IRoot SP showed the highest mean value of push-out bond strength (7.3±0.2), followed by AH Plus (6.8±0.1) while MTA Fillapex showed the lowest mean value of push-out bond strength (2.9±0.3). Conclusions: IRoot SP and AH plus sealers had greater resistance to push-out than MTA Fillapex sealer.

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“…The effect of CH dressing on the push-out bond strength of AH Plus and MTA Fillapex was already evaluated (13)(14)(15). But, until the present moment, there are no studies evaluating the influence of using CH dressing in the tubular penetration of these two sealers.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Calcium Hydroxide Intracanal Dressing on Dentinal Tubule Penetration of Two Root Canal Sealers

Cruz¹,

Grecca²,

Piasecki³

et al. 2017

Eur Endod J

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Objective: The aim of this study was to evaluate the effect of a calcium hydroxide (CH) dressing on the tubular penetration of two endodontic sealers, AH Plus (Dentsply Maillefer, Ballaigues, Switzerland) and MTA Fillapex (Angelus, Londrina, Brazil). Methods: Seventy-two mandibular premolars with a single root canal were prepared with ProFile.04 rotary instruments (Dentsply Maillefer) and divided into four groups. In two groups, an intracanal CH dressing was placed for 15 days. The obturations were performed with lateral condensation of gutta-percha in combination with one of the tested sealers. The roots were transversely sectioned at the apical and middle levels. The percentage of sealer penetration in the root canal walls and the percentage of impregnated dentin area in the transverse sections were obtained using confocal laser scanning microscopy. Statistical analysis was performed using one-way analysis of variance (ANOVA) and Games-Howell test. Results: The CH dressing reduced the mean value of tubular penetration in the middle third of teeth obturated with AH Plus (P<0.01), whereas no difference was observed at the apical sections for both sealers. Conclusion:The CH dressing did not interfere with the apical penetration of both tested sealers, however, decreased the tubular penetration in the middle third of the AH Plus root canal fillings. Overall, MTA Fillapex presented higher tubular penetration than AH Plus obturations. Keywords: Calcium hydroxide, confocal laser scanning microscopy, epoxy resin-based root canal sealer, mineral trioxide aggregate-based sealer

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Effect of calcium hydroxide dressing on push-out bond strength of endodontic sealers to root canal dentin

Cited by 46 publications

References 29 publications

Bond strength of a calcium silicate-based sealer tested in bulk or with different main core materials

Bond strength of a calcium silicate-based sealer tested in bulk or with different main core materials

Dentin Bond Strength Evaluation of Three Root Canal Sealers with Cold Gutta-Percha Lateral Obturation Technique: Push-Out Test Study

Influence of the Calcium Hydroxide Intracanal Dressing on Dentinal Tubule Penetration of Two Root Canal Sealers

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