Comparison of Push-out Bond Strength of Gutta-percha to Root Canal Dentin in Single-cone and Cold Lateral Compaction Techniques with AH Plus Sealer in Mandibular Premolars

Mirfazaelian, Hadi; Rahimi, Saeed; Froughreyhani, Mohammad; Galledar, Saeedeh; Zonouzi, Hamid Reza Mokhtari

doi:10.15171/joddd.2015.040

Cited by 18 publications

(28 citation statements)

References 30 publications

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“…Bitter, et al 5 (2009) associated rhodamine with cements and observed that bond strength values were not affected by rhodamine, values were similar to those reported in the literature. The same occurred in the present study, bond strength values found here were similar to those reported in the literature 4 , 14 .…”

Section: Discussionsupporting

confidence: 93%

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Effect of photodynamic therapy and non-thermal plasma on root canal filling: analysis of adhesion and sealer penetration

et al. 2017

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Objective The aim of this study was to evaluate the effect of photodynamic therapy (PDT) and non-thermal plasma (NTP) on adhesion and sealer penetration in root canals.Material and Methods Sixty single-rooted premolars were used. The teeth were prepared using a crown-down technique. NaOCl and EDTA were used for irrigation and smear layer removal, respectively. The root canals were divided into three groups: control, PDT, and NTP. After treatments, the roots were filled using gutta-percha and either AH Plus (AHP) or MTA Fillapex (MTAF) sealers. Samples were sectioned at 4, 8, and 12 mm from the apex (1-mm slices)and analyzed by the push-out bond strength test (adhesion) and confocal laser scanning microscopy (sealer penetration). Data were statistically evaluated using Kruskal-Wallis, Dunn’s, and Spearman’s tests.Results Regarding AHP, bond strength was similar in the NTP group and in the control group, but significantly lower in the PDT group. As to MTAF, both therapies showed lower values than the control group. In the confocal analysis of AHP, maximum and mean penetration, and penetrated area were statistically higher in the control group than in the PDT and NTP groups. Penetrated perimeter was similar among groups. Regarding MTAF, all parameters yielded better results in the NTP than in the control group. The PDT and control groups showed similar results except for penetrated area.Conclusion PDT and plasma therapy affected the adhesion and sealer penetration of root canals filled with AH Plus and MTA Fillapex and there is no positive correlation between adhesion and sealer penetration.

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Section: Discussionsupporting

confidence: 93%

“…Each root was horizontally sectioned with a slow-speed water-cooled diamond saw (Buehler Isomet 2000, Lake Bluff, IL, USA) at 4, 8, and 12 mm from the apex 14 to produce 1-mm thick slices for each root region (apical, middle, and coronal).…”

Section: Methodsmentioning

confidence: 99%

Effect of photodynamic therapy and non-thermal plasma on root canal filling: analysis of adhesion and sealer penetration

et al. 2017

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“…Various experimental methods have been used to assess the quality of root canal sealing, such as fluid filtration [ 1 ], bond strength test [ 21 22 ], photo-micrographic analysis [ 2 5 16 23 24 25 ] and µCT imaging [ 4 13 26 27 ]. Above all, µCT imaging and stereoscopic microscopic methods allow the assessment of cross-sectional images of the space occupied by GP, sealer, and void.…”

Section: Discussionmentioning

confidence: 99%

Quantification of the tug-back by measuring the pulling force and micro computed tomographic evaluation

2017

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ObjectivesThe aims of this study were to quantify tug-back by measuring the pulling force and investigate the correlation of clinical tug-back pulling force with in vitro gutta-percha (GP) cone adaptation score using micro-computed tomography (µCT).Materials and MethodsTwenty-eight roots from human single-rooted teeth were divided into 2 groups. In the ProTaper Next (PTN) group, root canals were prepared with PTN, and in the ProFile (PF) group, root canals were prepared using PF (n = 14). The degree of tug-back was scored after selecting taper-matched GP cones. A novel method using a spring balance was designed to quantify the tug-back by measuring the pulling force. The correlation between tug-back scores, pulling force, and percentage of the gutta-percha occupied area (pGPOA) within apical 3 mm was investigated using µCT. The data were analyzed using Pearson's correlation analysis, one-way analysis of variance (ANOVA) and Tukey's test.ResultsSpecimens with a strong tug-back had a mean pulling force of 1.24 N (range, 0.15–1.70 N). This study showed a positive correlation between tug-back score, pulling force, and pGPOA. However, there was no significant difference in these factors between the PTN and PF groups. Regardless of the groups, pGPOA and pulling force were significantly higher in the specimens with a higher tug-back score (p < 0.05).ConclusionsThe degree of subjective tug-back was a definitive determinant for master cone adaptation in the root canal. The use of the tug-back scoring system and pulling force allows the interpretation of subjective tug-back in a more objective and quantitative manner.

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“…This technique has limitations, which include the following: poor adaptation of gutta-percha to the canal walls, spaces between gutta-percha and the sealer, and the presence of a large amount of the sealer in the apical region due to the inhomogeneous gutta-percha-sealer mass. 17 To help to overcome these limitations, the technique used in this study was the single-cone technique. A single gutta-percha master cone placed with a sealer provides a final compact mass without spaces.…”

Section: Discussionmentioning

confidence: 99%

“…18 Ideal adhesion of the root canal filling material to the root dentin is one of the main criteria in evaluating the clinical efficacy of the obturation technique. 17 It helps to maintain the integrity of the dentin-sealer interface by resisting dislodgment and ensuring the proper function of the restored tooth. 4 The adhesion of the obturating material to the dentin walls is evaluated using bond strength testing.…”

Section: Discussionmentioning

confidence: 99%

Bond strength and solubility of a novel polydimethylsiloxane-gutta-percha calcium silicate-containing root canal sealer

2019

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Background. Endodontic sealers are essential for sealing gutta-percha to the dentin walls. They help to ensure that the canal remains free of microorganisms which might lead to infection. In order to perform their intended function, the sealers should properly adhere to the dentin walls and remain insoluble when set in the canal. Objectives. The purpose of this study was to evaluate the bond strength and solubility of a novel polydimethylsiloxane-gutta-percha calcium silicate-containing root canal sealer (GuttaFlow ® bioseal) and compare it with the zinc oxide and eugenol sealer (Zical ®). Material and methods. The endodontic sealers used in this study were GuttaFlow bioseal and Zical. The bond strength was assessed using push-out bond strength test in 3 root segments: coronal, middle and apical. The solubility was tested according to the American National Standards Institute / American Dental Association (ANSI/ADA) specification No. 57 at 3 different time intervals: 1, 7 and 14 days. Results. The push-out bond strength in all root segments was significantly higher in Zical compared to GuttaFlow bioseal. The solubility was significantly higher on day 1 and 7 in Zical compared to GuttaFlow bioseal, and on day 14, the difference between them was not significant. Conclusions. Within the limitations of this study, the endodontic sealer GuttaFlow bioseal showed low bond strength values compared to Zical. The solubility of the set GuttaFlow bioseal and Zical were both within the recommended ANSI/ADA levels.

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Comparison of Push-out Bond Strength of Gutta-percha to Root Canal Dentin in Single-cone and Cold Lateral Compaction Techniques with AH Plus Sealer in Mandibular Premolars

Cited by 18 publications

References 30 publications

Effect of photodynamic therapy and non-thermal plasma on root canal filling: analysis of adhesion and sealer penetration

Effect of photodynamic therapy and non-thermal plasma on root canal filling: analysis of adhesion and sealer penetration

Quantification of the tug-back by measuring the pulling force and micro computed tomographic evaluation

Bond strength and solubility of a novel polydimethylsiloxane-gutta-percha calcium silicate-containing root canal sealer

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