scholarly journals Assessment of apical microleakage using tooth clearing method between two softened core obturation techniques

2016 ◽  
Vol 1 (1) ◽  
pp. 39
Author(s):  
Nadia S. Wongsari ◽  
Christine A. Rovani ◽  
Aries C. Trilaksana
Keyword(s):  
Root Canal ◽  
Continuous Wave ◽  
Positive Control ◽  
Single Root ◽  
The Third ◽  
Gutta Percha ◽  
Nail Polish ◽  
Wave Technique ◽  
Post Hoc ◽  
Clearing Method

This study aimed to compare apical microleakage using tooth clearing method between two softened core obturation techniques which are carrier based gutta percha and continuous wave. Samples are maxillary first incisors, with a single root canal. They are devided into three groups of 9 each randomly. The first group is carrier based gutta percha, the second is continuous wave, and the third is lateral condensation as positive control. The teeth were decoronated at the cementoenamel junction, prepared with crown down pressureless technique, and obturated according their group.  All the samples were coated with nail polish except for 2 mm from the apical, and then placed in China Ink for 7 days. After that, the polish were removed and the samples undergone tooth clearing procedure. When the samples had been transparant, they were observed using microscop. Data were collected and analyzed using Anova and Tukey’s post hoc test. The study showed that mean of apical microleakage from continuous wave technique (0.256+0.133) is less than from carrier based gutta percha (0.433+0.173). As the conclusion, there is a significant diffrence (p:0.034) of apical microleakage between continuous wave and carrier based gutta percha (p<0.05).

scholarly journals Assessment of apical microleakage using tooth clearing method between two softened core obturation techniques

2016 ◽  
Vol 1 (1) ◽  
pp. 39
Author(s):  
Nadia S. Wongsari ◽  
Christine Anastasia Rovani ◽  
Aries Chandra Trilaksana
Keyword(s):  
Root Canal ◽  
Continuous Wave ◽  
Positive Control ◽  
Single Root ◽  
The Third ◽  
Gutta Percha ◽  
Nail Polish ◽  
Wave Technique ◽  
Post Hoc ◽  
Clearing Method

<p>This study aimed to compare apical microleakage using tooth clearing method between two softened core obturation techniques which are carrier based gutta percha and continuous wave. Samples are maxillary first incisors, with a single root canal. They are devided into three groups of 9 each randomly. The first group is carrier based gutta percha, the second is continuous wave, and the third is lateral condensation as positive control. The teeth were decoronated at the cementoenamel junction, prepared with crown down pressureless technique, and obturated according their group.  All the samples were coated with nail polish except for 2 mm from the apical, and then placed in China Ink for 7 days. After that, the polish were removed and the samples undergone tooth clearing procedure. When the samples had been transparant, they were observed using microscop. Data were collected and analyzed using Anova and Tukey’s post hoc test. The study showed that mean of apical microleakage from continuous wave technique (0.256<span style="text-decoration: underline;">+</span>0.133) is less than from carrier based gutta percha (0.433<span style="text-decoration: underline;">+</span>0.173). As the conclusion, there is a significant diffrence (p:0.034) of apical microleakage between continuous wave and carrier based gutta percha (p&lt;0.05).</p>

scholarly journals Comparative Analysis of the Filling Capacity of Simulated Lateral Canals of Two Bioactive Root Canal Sealers Using Warm Gutta-Percha Technique

2021 ◽  
Vol 11 (14) ◽  
pp. 6270
Author(s):  
Jesús Mena-Álvarez ◽  
Juliette Theophanie Sevrain ◽  
Mario Zorita-García ◽  
Cristina Rico-Romano
Keyword(s):  
Root Canal ◽  
Continuous Wave ◽  
Ex Vivo ◽  
Linear Measurement ◽  
Score System ◽  
Gutta Percha ◽  
Wave Technique ◽  
The Difference ◽  
Root Canal Sealers

The aim of this study was to evaluate ex vivo the sealing achieved at simulated lateral canals (SLC) and the quality of filling according to their position in the root canal after using the same filling technique. SLC were created at three levels in 55 teeth and divided into two groups depending on the root canal sealer used (1: BioRoot® RCS, 2: GuttaFlow® bioseal). They filled them with the continuous wave technique and submitted to a diaphanization technique. The samples were analyzed using a magnifying lens (20×), pictures were taken, which proceeded to linear measurement with the ImageJ® program and used a filling score system with five grades (0 to 4, 0 and 1 not acceptable, 2 to 4 acceptable); BioRoot® RCS has got a greater proportion than GuttaFlow® bioseal for SLC filled acceptably at 10 mm from the apex (p < 0.05). The highest proportion of SLC filled acceptably was found in the middle third (6 mm) (p < 0.05), followed by the apical third (3 mm) and the coronal third (10 mm). The difference between apical and coronal third could be significant; BioRoot® RCS has been better than GuttaFlow® bioseal for filling SLC in the coronal third of the teeth. Studies on the characteristics of these cements are missing to explain these differences.

scholarly journals Ex Vivo Area-Metric Analysis of Root Canal Obturation Using Cold and Warm Gutta-Percha

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Katarzyna Olczak ◽  
Leszek Klimek ◽  
Halina Pawlicka
Keyword(s):  
Root Canal ◽  
Continuous Wave ◽  
Ex Vivo ◽  
Thermal Methods ◽  
Root Canal Obturation ◽  
Surface Areas ◽  
Gutta Percha ◽  
Area Metric ◽  
Wave Technique ◽  
Thermal Techniques

Purpose. To evaluate the percentage content of gutta-percha, sealer, and voids in a filled canal area following three different filling techniques, using microphotographs and Nis Elements® software. Material and Methods. After completing chemomechanical preparation, the teeth (n=48) were randomly divided into three groups (n=16) and filled by either cold lateral condensation (CLC group), the continuous wave technique (EOU group), and the ProTaper® thermoplasticized obturator (PT group). The roots were then sectioned horizontally 2.5, 6.5 and 8.5 mm from the tooth apical foramen. The surface areas of the sealer, voids, and gutta-percha (PGFA percentage of gutta-percha-filled area) were calculated and the results subjected to statistical analysis (Kruskal-Wallis test). Results. The percentage of gutta-percha (PGFA) was lower in the apical third of the canal for the CLC and EOU groups than the PT group. In the middle and the coronal third of the canal, the PGFA value was higher after using thermal techniques (EOU and PT) than cold lateral condensation (CLC). The presence of voids was comparable in the fillings performed using warm and cold gutta-percha obturation at all levels. Conclusion. Although thermal methods of root canal obturation allow higher PGFA values to be obtained than cold lateral condensation, the content of voids is comparable.

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

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.

scholarly journals An Evaluation of GuttaFlow2 in Filling Artificial Internal Resorption Cavities: An in vitro Study

2016 ◽  
Vol 17 (6) ◽  
pp. 445-450 ◽  
Author(s):  
Mohammad Y Hajeer ◽  
Yara Mohammad ◽  
Hisham Alafif ◽  
Oula Yassin
Keyword(s):  
Cross Sections ◽  
Root Canal ◽  
In Vitro Study ◽  
Free Flow ◽  
Control Group ◽  
Injection Technique ◽  
Filling Material ◽  
The Third ◽  
Gutta Percha

ABSTRACT Introduction Obturation of root canal with internal resorption represents a major challenge in Endodontics. In spite of that, usual obturation techniques are often employed without considering the best technique to solve this problem. The goal of this study was to investigate the ability of GuttaFlow2 in filling artificial internal resorption cavities. Materials and methods The study sample included 36 human upper central incisors that were prepared using Protaper system (F4). Internal resorption cavities were prepared by cutting each tooth at 7 mm from the apex and preparing hemispherical cavities on both the sides and then re-attaching them. The sample was randomly separated into three groups (n = 12 in each group). In the first group, thermal injection technique (Obtura II) was employed and served as the control group. In the second group, injection of cold free-flow obturation technique with a master cone (GF2-C) was employed, whereas in the third group injection of cold free-flow obturation without a master cone (GF2) was followed. The teeth were re-cut at the same level as before and examined under a stereomicroscope. Subsequently, the captured images were transferred to AutoCAD program to measure the percentage of total filling “TF,” gutta-percha “G,” sealer “S,” and voids “V” out of the total surface of the cross sections. Results All materials showed high filling properties in terms of “total filling,” ranging from 99.17% (for Obtura II) to 99.72% (for GF2-C). Regarding gutta-percha percentages of filling, they ranged from 83.15 to 83.93%, whereas those for the sealer ranged from 5.71 to 15.24%. GuttaFlow2 group with a master cone appeared to give the best results despite the insignificant differences among the three groups. Conclusion The GuttaFlow2 with a master cone technique seemed to be a promising filling material and gave results similar to those observed with Obtura II. It is recommended for use to obturate internal resorption cavities in clinical practice due to its good adaptability to root canal walls, ease of handling, and application. Clinical significance Internal resorption defects can be successfully filled with GuttaFlow2 material when supplemented with a master cone, and the results are comparable with those obtained with the Obtura II technique. How to cite this article Mohammad Y, Alafif H, Hajeer MY, Yassin O. An Evaluation of GuttaFlow2 in Filling Artificial Internal Resorption Cavities: An in vitro Study. J Contemp Dent Pract 2016;17(6):445-450.

scholarly journals Endodontic Irrigants and Their Activation Efficacy on Cleansing Post-Space Root Canal Walls

Prosthesis ◽  
2021 ◽  
Vol 3 (4) ◽  
pp. 406-414
Author(s):  
Manuela Marchese ◽  
Pontoriero I. K. Denise ◽  
Edoardo Ferrari Cagidiaco ◽  
Alfredo Iandolo ◽  
Simone Grandini ◽  
...  
Keyword(s):  
Root Canal ◽  
Continuous Wave ◽  
Smear Layer ◽  
The Other ◽  
X Rays ◽  
Ultrasonic Activation ◽  
Gutta Percha ◽  
Bonding System ◽  
Group A ◽  
Group B

The aim of this study was to evaluate the efficacy of activated irrigants (EDTA e NaOCL) during the cleansing of root walls, of the smear layer, of the debris, and gutta-percha after the preparation of the restorative space. Twenty single and multi-rooted (n = 20) have been collected. All samples were prepared by the same operator, using Nickel-titanium rotating instruments (Mtwo) through the Simultaneous Shaping Technique. The continuous-wave of condensation technique of obturation was used. To all specimens, the restorative space has been made, leaving 5 mm of apical gutta-percha, and postoperative periapical X-rays were performed. The samples were randomly divided into two groups: Group (A): cleansing of the root walls with ultrasonic activation of the irrigants (NEWTRON P5 XS; Satelec Acteon); Group (B): radicular walls wash without ultrasonic activation of endodontic irrigants (NaOCl 5.25% and EDTA 17%). Both dental sample groups were cut longitudinally with a low-speed saw (Isomet); the samples were observed by using a scanning electron microscope (Jeol, Jsm-6060LV) in order to evaluate: (1) the amount of debris/smear layer; (2) the mount of obstruction of dentinal tubules found in the two groups; and (3) evaluation of the presence of gutta-percha. Then, the other five samples each group (with and without ultrasonic activation) were prepared following the same protocol. Then, a universal bonding system (G-Praemio Bond, GC) and a layer of a flowable resin composite (Gaenial Flow, GC) were light-cured and used on top of the prepared root canal walls. The samples were cut in two pieces along the long axis of the root. Then, half sample teeth were kept in an acidic solution (37% HCl) for 48 h in order to completely dissolve dental structures and to have a direct view of resin tags formation under SEM. The other half was prepared to observe the adhesive interface under SEM. The amount of debris was not satisfactory in 9 out of 10 cases in Group B, while in Group A, which has been treated with ultrasounds, the result was either good or great in most of the samples. For the sample group treated with ultrasound, the tubules were evaluated as perfectly clean in 9 out of 10 cases, instead, the results are unsatisfactory for 9 out of 10 cases of group B not treated with ultrasound. Differences between Group A and B were statistically significant. With respect to the presence of debris and tubules obstruction treatment with ultrasonic activation, it offers with no doubt better results. When ultrasonic activation is used in combination with endodontic irrigants, a clean dentin substrate is be obtained for the adhesion of restorative materials, but in order to confirm the findings of this study, further in vivo trials are needed.

scholarly journals Effect of a sonic device on bonding of fiberglass posts to root canals

2018 ◽  
Vol 17 ◽  
pp. e18924
Author(s):  
Marina de Almeida Salim ◽  
Thais Mageste Duque ◽  
Heloisa Carla Dell Santo Gusman ◽  
Carolina Oliveira de Lima ◽  
Brenda Paula Figueiredo de Almeida Gomes ◽  
...  
Keyword(s):  
Root Canal ◽  
Adhesive System ◽  
Resin Cement ◽  
Root Canal Filling ◽  
Root Canals ◽  
Gutta Percha ◽  
Ah Plus ◽  
Root Dentin ◽  
Post Hoc ◽  
Adhesive Cement

Aim: This study evaluated the effect of a sonic device on the bonding of fiberglass posts cemented with a self-etching adhesive combined with conventional cement or a self-adhesive cement to root dentin. Methods: Forty single-rooted bovine incisors were endodontically prepared using a step-back technique. Gutta-percha and AH Plus sealer were used for root canal filling, combined with a thermoplasticization technique. After 1 week, the post space was prepared and the roots were divided into four groups according to the following factors: adhesive system/resin cement (Ambar/ AllCem Core [FGM] and RelyX U200 [3M]) and application mode (manual or sonic). The posts were cemented and the roots were cut into discs and submitted to push-out bond strength (POBS) test. The failure mode was evaluated using a stereoscope at 25x magnification. The data were analyzed statistically using ANOVA and Tukey’s post-hoc test (α = 0.05). Results: The sonically activated RelyX U200 group was superior to the other groups. RelyX U200 manually applicated showed similar results to those of sonically activated Âmbar/AllCem. These three groups outperformed the Âmbar/AllCem manually applicated group. Adhesive failure between dentin and resin cement was the most predominant pattern. Conclusion: Sonic application of self-etching adhesive and self-adhesive cement improved the POBS of fiber posts to the root canal.

scholarly journals An In Vitro Assessment of Gutta-Percha Coating of New Carrier-Based Root Canal Fillings

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Raghad Abdulrazzaq Alhashimi ◽  
Richard Foxton ◽  
Shihab Romeed ◽  
Sanjukta Deb
Keyword(s):  
Bond Strength ◽  
Analysis Of Variance ◽  
Root Canal ◽  
Microcomputed Tomography ◽  
Gutta Percha ◽  
Orthodontic Wire ◽  
In Vitro Assessment ◽  
Post Hoc ◽  
Push Out

The first aim of this paper was to evaluate the push-out bond strength of the gutta-percha coating of Thermafil and GuttaCore and compare it with that of gutta-percha used to coat an experimental hydroxyapatite/polyethylene (HA/PE) obturator. The second aim was to assess the thickness of gutta-percha around the carriers of GuttaCore and HA/PE obturators using microcomputed tomography (μCT). Ten (size 30) 1 mm thick samples of each group (Thermafil, GuttaCore, and HA/PE) were prepared. An orthodontic wire with a diameter of 0.5 mm was attached to the plunger of an Instron machine in order to allow the push-out testing of the gutta-percha coating. Five samples of (GuttaCore and HA/PE) were scanned usingμCT. The data obtained were analysed with one-way analysis of variance and Tukey post hoc test. HA/PE obturators exhibited significantly higher push-out bond strength (P<0.001) determined at 6.84 ± 0.96 than those of Guttacore around 3.75 ± 0.75 and Thermafil at 1.5 ± 0.63. GuttaCore demonstrated significantly higher bond strength than Thermafil (P<0.001).μCT imaging revealed that the thickness of gutta-percha around the experimental HA/PE carrier was homogeneously distributed. The bondability and thickness of gutta-percha coating around HA/PE carriers were superior to those of GuttaCore and Thermafil obturators.

scholarly journals Efficacy of an Organic Solvent and Ultrasound for Filling Material Removal

2013 ◽  
Vol 24 (6) ◽  
pp. 585-590 ◽  
Author(s):  
Gabriela Guardiola Muller ◽  
Anielle Pinheiro Schonhofen ◽  
Patricia Maria Poli Kopper Mora ◽  
Fabiana Soares Grecca ◽  
Marcus Vinicius Reis So ◽  
...  
Keyword(s):  
Root Canal ◽  
Filling Material ◽  
Control Groups ◽  
Passive Ultrasonic Irrigation ◽  
Universal System ◽  
Gutta Percha ◽  
Ah Plus ◽  
Ultrasonic Irrigation ◽  
Post Hoc ◽  
Endodontic Retreatment

The aim of this study was to investigate whether a final rinse with Endosolv R® solvent and ultrasound resulted in cleaner root canal walls during endodontic retreatment. A total of 56 extracted premolar teeth were manually instrumented using a step-back flare technique and filled with gutta-percha and AH Plus sealer. After 9 months, the canals were retreated by removing the gutta-percha and sealer with ProTaper Universal Retreatment and rotary preparation with ProTaper Universal System up to an F5 file. As a final step, the teeth were randomly divided in 4 groups (n=14) and were subjected to passive ultrasonic irrigation (PUI) with either Endosolv R or distilled water. In the control groups, the irrigants were left undisturbed. Roots were cleaved and examined under scanning electron microscopy (SEM), and the amount of filling remnants on the canal walls was assessed by two calibrated examiners in a blinded fashion. Data were analyzed by the Kruskal-Wallis test and the Student-Newman-Keuls post hoc test (α=0.05). All groups presented filling debris in the three root canal thirds after retreatment. There were no significant differences between the groups or among the root canal thirds within each group (p>0.05). PUI with Endosolv R was not effective in the removal of filling debris from root canal walls.

scholarly journals Effects of two different sealer material on fiber post bond strength in root canal

2016 ◽  
Vol 1 (1) ◽  
pp. 31
Author(s):  
Kurniawaty Kurniawaty ◽  
Christine A. Rovani ◽  
Juni J. Nugroho ◽  
Nurhayaty Natsir ◽  
Indrya K. Mattulada
Keyword(s):  
Bond Strength ◽  
Epoxy Resin ◽  
Root Canal ◽  
Testing Machine ◽  
Negative Control Group ◽  
Negative Control ◽  
Control Group ◽  
Fiber Post ◽  
Single Root ◽  
Gutta Percha

This study was aimed to determine the effect of epoxy resin-based and MTA-based sealer on fiber post bond strength in the root canal wall.Samples are mandibulary first premolar, with a single root canal. They are divided into three groups: negative control group which is a gutta percha obturation without sealer, gutta percha obturation with epoxy resin based sealer [AH Plus], and gutta percha obturation with MTA-based sealer [MTA Fillapex] groups. Samples were decoronated, prepared, obturated and then stored in the incubator at room temperature for one week, the post space were prepared for fiber post insertion. Samples were mounted in the PVC pipes before insertion. Samples were stored in the incubator for one day before bond strength testing. Universal testing machine was used with the speed of 0,5 mm/minutes. Data were collected and analysed using ANOVA.The result showed that the fiber post bond strength in the root canal obturated with epoxy resin-based sealer was higher [12.311 N/mm2] than MTA-based sealer [10.786 N/mm2], but that result was not statistically significant. Therefore, it was concluded that the root canal obturated with epoxy resin-based sealer did not yield a significant bond strength [p = 0.689] compared to MTA-based sealer [p> 0.05].

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