Neurotoxic effect of two root canal sealers with calcium hydroxide on rat phrenic nerve in vitro

The ability of root canal sealers to provide apical seal depends on their physicochemical properties. The aim of this study was to investigate and compare physicochemical properties of different root canal sealers. The pH, solubility, dimensional change and flow rate of four commonly used root canal sealers were evaluated. All of the tested sealers showed a significant solubility and dimensional change. The findings of the present study indicated that the calcium-hydroxide based Sealapex has satisfactory physicochemical properties, but from clinical point of view Adseal might be the most suitable for use.

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Effect of double antibiotic and calcium hydroxide pastes on dislodgement resistance of an epoxy resin-based and two calcium silicate-based root canal sealers

Clinical Oral Investigations ◽

10.1007/s00784-016-1877-1 ◽

2016 ◽

Vol 21 (4) ◽

pp. 1277-1282 ◽

Cited By ~ 11

Author(s):

Hakan Gokturk ◽

Emre Bayram ◽

Huda Melike Bayram ◽

Tugrul Aslan ◽

Yakup Ustun

Keyword(s):

Epoxy Resin ◽

Calcium Hydroxide ◽

Root Canal ◽

Calcium Silicate ◽

Root Canal Sealers

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Comparative evaluation of retreatability of calcium silicate-based root canal sealers and epoxy resin-based root canal sealers in curved canals-An In-Vitro micro-CT analysis

Indian Journal of Dental Research ◽

10.4103/ijdr.ijdr_328_20 ◽

2021 ◽

Vol 32 (1) ◽

pp. 79

Author(s):

MV Mavishna ◽

KondasVijay Venkatesh

Keyword(s):

Epoxy Resin ◽

Root Canal ◽

Calcium Silicate ◽

Comparative Evaluation ◽

Micro Ct ◽

Ct Analysis ◽

Root Canal Sealers

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In vitro evaluation of the effectiveness of the chemomechanical preparation against Enterococcus faecalis after single- or multiple-visit root canal treatment

Brazilian Oral Research ◽

10.1590/s1806-83242007000400005 ◽

2007 ◽

Vol 21 (4) ◽

pp. 308-313 ◽

Cited By ~ 8

Author(s):

Eduardo Diogo Gurgel-Filho ◽

Nilton Vivacqua-Gomes ◽

Brenda Paula Figueiredo de Almeida Gomes ◽

Caio Cezar Randi Ferraz ◽

Alexandre Augusto Zaia ◽

...

Keyword(s):

Calcium Hydroxide ◽

Enterococcus Faecalis ◽

Root Canal ◽

Control Groups ◽

Single Visit ◽

Root Canals ◽

Multiple Visit ◽

Microbial Samples ◽

Chlorhexidine Gel

The purpose was to assess the elimination of Enterococcus faecalis in vitro in human mandibular premolars after chemomechanical preparation with or without the use of a calcium hydroxide dressing. After 60 days of contamination with E. faecalis, the root canals were prepared using the Crown-Down technique combined with 2% chlorhexidine gel irrigation. Then, the specimens were divided into two experimental groups, treated in a single visit or in multiple visits, and two control groups. The multiple-visit group received a dressing with calcium hydroxide for 14 days (CalenTM) and the single-visit group did not receive any medication. In the two control groups, the canals were filled with BHI after chemomechanical preparation with 2% chlorhexidine gel or distilled water. Microbial samples were taken from the root canals for colony forming unit count for each phase of the treatment using sterile paper points inside the root canal lumen. Data were ranked and analyzed by the Kruskal-Wallis statistical test. The residual microbial colonies were then assessed. The results showed that chemomechanical preparation using 2% chlorhexidine gel with no intra-canal dressing reduced by 100% the E. faecalis contamination of the root canal lumen. The calcium-hydroxide group that received the 14-day intra-canal dressing allowed a small number of bacteria to grow between visits, but without statistical differences between groups.

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Sealability of Different Root Canal Nanosealers: Nano Calcium Hydroxide and Nano Bioactive Glass

The Open Dentistry Journal ◽

10.2174/1874210601913010308 ◽

2019 ◽

Vol 13 (1) ◽

pp. 308-315

Author(s):

Asmaa A. Desouky ◽

Maged M. Negm ◽

Magdy M. Ali

Keyword(s):

Zinc Oxide ◽

Bioactive Glass ◽

Calcium Hydroxide ◽

Root Canal ◽

Blue Dye ◽

Nano Powder ◽

Zinc Oxide Eugenol ◽

Nail Polish ◽

Stereo Microscope

Background: The success of the endodontic treatment is largely dependent on the sealing achieved by root canal obturation. The application of sealer fills imperfections and increases adaptation of the root filling to the canal walls. Aim: To evaluate the sealability of experimental nanosealers (nano calcium hydroxide and nano bioactive glass) and to compare it with the commercial zinc oxide eugenol sealer using a dye penetration method. Materials and Methods: Sixty single-rooted mandibular premolars were selected. The tooth crowns were removed so as to obtain standardized 15-mm-long root specimens. The root canal was instrumented with Protaper Ni-Ti rotary file and the final file size was up to # F4/.06 (in vitro study). They were then randomly allocated into 3 groups of 20 specimens each (n=20) according to the sealer used for obturation, and all samples were filled with single cone gutta-percha (#40/06) and one of the tested sealers. All teeth were coated with nail polish and then suspended in 2% methylene blue dye for 7 days. Stereo-microscope (x10) was used to evaluate the sealability of newly introduced nanosealers. The data were statistically analyzed by ANOVA test followed by post hoc analysis (P < 0.05). Results: Significant improvement shown by the presented study suggests that nano calcium hydroxide sealer showed significantly less dye leakage than nano bioactive glass sealer and zinc oxide eugenol sealer. Conclusion: The results of this study showed that the synthesized nano-powder sealers are suitable for use in root canal therapy to prevent leakage. The root canal can be sealed better by using smaller nano-powder particle sizes. In addition, the two groups exhibited significant differences in leakage in comparison with commonly used ZOE sealer.

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Συμβολή εις την μελέτην της αξίας ενιών εμφρακτικών υλικών των ριζικών σωληνών δια ραδιενεργών ισοτόπων (S35)

10.12681/eadd/5528 ◽

1967 ◽

Author(s):

Ζαχαρίας Μαντζαβίνος

Keyword(s):

Root Canal ◽

Multiple Point ◽

Multiple Points ◽

Single Root ◽

Gutta Percha ◽

Silver Point ◽

Autoradiographic Technique ◽

Root Canal Sealers

The present study was performed in order to evaluate, by the autoradiographic technique the sealing properties of three root canal sealers, combined with gutta - percha and silver points, in vitro. A total of one hundred and five extracted human, single root teeth were used and divided into five groups according to the filling combinations tested. The teeth were filled, using two techniques, of the single and multiple points. Autoradiographies, using S35, in all instances, were performed and the results obtained were compared with the respective dental radiograms The obtained results lead to the following conclusions: 1. Silver and gutta - percha points may be always combined with sealers. Otherwise the root canal is not adequately sealed. 2. A gutta - percha point, without sealer, produced a superior filling to silver point. 3. It seems possible to obtain a complete obturation of the rootcanal with the combination of gutta - percha and Grosman’s Sealer using the multiple - point technique. 4. It follows in effectivness, the combination of silver point and Grossman’s sealer.5. The combination of gutta - percha point with Zinc - oxide eugenol sealer and chloropercha are the least efficient. 6. Finally it must be stressed that since the conditions of the present study do not correspond exactly to those encountered in vivo, extrapolation of the results obtained, to man has to be performed with caution.

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