Adaptability of different canal sealers to the root canal dentin - scanning electron microscopy analysis (original) (raw)
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International journal of scientific research, 2018
Aims: To compare the sealing ability of a new root canal sealer, Totalfill BC Sealer (FKG Dentaire SA, La Chaux-de-Fonds, Switzerland) with AH Plus Sealer (Dentsply, Tulsa, OK). Methods and Material: Sixty five permanent single rooted, human maxillary central incisors of similar sizes were selected for the study. Fifty teeth were randomly selected for dye penetration and fifteen teeth for Scanning Electron Microscopy. For dye penetration the teeth were divided into two groups of twenty five teeth each. In Group 1 (n=25), Totalfill BC Sealer and in Group 2 (n=25), AH Plus sealer were used as root canal sealers with Gutta-percha cones to obturate the canals. Roots were covered with nail paint except 2.0 mm of root apically and stored in 0.5% methylene blue dye for one week. The teeth were immersed in 7ml of 70% nitric acid for complete dissolution and subjected to UltraViolet spectrophotometer to quantify the concentration of the dye in each sample. For SEM evaluation, fifteen samples were sectioned longitudinally and marginal adaptation of sealers to root dentin was evaluated. Statistical analysis used: The dye leakage of both groups was analyzed using the Independent t-test. Marginal adaptation of sealers to root dentin was analyzed using unpaired student t test. Results:The mean dye leakage in Group 1 (0.36 ± 0.11) was less when compared to Group 2 (0.49 ± 0.12) (P<0.001 highly significant). The SEM study revealed gap-free regions and gap-containing regions in canals filled with both materials. Gap-containing regions in Group 1 were significantly low compared to Group 2. Conclusions: Within the limitations of this study, apical sealing ability and adaptation to the root canal dentin of Totalfill BC sealer is better compared to AH Plus sealer.
Dentistry Journal
Background: Obturation represents a critical step in endodontic treatment, which relies on a core material and a sealer. This study aims to evaluate the sealing ability and bond strength to the root canal walls of an epoxy resin-based sealer (AH-Plus®, Dentsply Sirona, Johnson City, TN, USA) and a bioceramic sealer (GuttaFlow Bioseal®, Coltène/Whaledent, GmbH + Co. KG, Langenau, Germany). Methods: Thirty-eight maxillary anterior teeth with single roots and identical round sections were separated into two experimental groups according to the root canal sealers used, namely, G1 = AH-Plus® and G2 = GuttaFlow Bioseal®, and two control groups, specifically, G3 = the negative control and G4 = the positive control. The sealing capacity was measured by the penetration of the radioactive isotope 99mTc. For the push-out test, the compressive force test was performed in a universal machine and the force was applied by exerting pressure on the surface of the material to be tested in the apical ...
Coronal sealing ability of a new root canal filling material
Journal of the Canadian Dental Association, 2007
To date, many different materials have been proposed for root canal fillings, but gutta-percha (used with various types of sealers) has remained the material of choice for over a century. A new root canal obturation system, the Epiphany endodontic obturation system, has been developed to replace gutta-percha and traditional sealers for root canal obturation. The purpose of this study was to evaluate the coronal sealing ability of the new endodontic obturation system. Seventy-two maxillary and mandibular single-rooted human teeth extracted for periodontal reasons were used. The root canals were instrumented using the step-back technique and were irrigated with 5.25% sodium hypochlorite. The smear layer was removed by washing in 10 mL of 17% ethylenediamine tetra-acetic acid (EDTA). The specimens were randomly divided into 3 groups (group 1 to be filled with gutta-percha and AH 26 sealer, group 2 with gutta-percha and AH plus sealer, and group 3 with Epiphany self-etch sealer and Resi...
Journal of Pierre Fauchard Academy (India Section), 2014
Aim: The present in vitro SEM study compared the apical sealing ability of three different endodontic sealers used in single cone obturation technique. Material and method: 45 freshly extracted mandibular premolars with single canal and fully formed apices were selected. The samples were decoronated at/below the cementoenamel junction (CEJ) obtaining root lengths of 15 mm. The samples were instrumented using ProTaper rotary file system SX-F2. Following instrumentation the samples were randomly divided in three different groups for three different sealers to be used in single cone obturation technique. Group 1 EndoSequence BC, Group 2 GuttaFlow 2 and Group 3 AH Plus. The sealers were allowed to set completely. Following this the samples were longitudinally sectioned at the apical third and gold sputtered for SEM evaluation. The interphase between the radicular dentin and the root canal filling material were obtained in micrometers (mm) from the SEM images. Statistical analysis was performed. Results: The groups exhibited a statistically significant difference (p < 0.01). Group 3 presented with the highest interphase distance (p < 0.01), whereas Group 1 and 2 exhibited a statistically similar values (p > 0.05). Conclusion: The GuttaFlow 2 and Endosequence BC endodontic sealers showed better adaptation to the radicular dentin as compared to AH Plus sealer.
Quantitative and Qualitative Assessment of Sealing Ability of Different Root Canal Sealing Materials
https://www.ijhsr.org/IJHSR\_Vol.10\_Issue.1\_Jan2020/IJHSR\_Abstract.028.html, 2020
Background: The use of resin-based dentin adhesives has become routine in dentistry. As a result, marginal leakage in conjunction with bonded restorations is greatly reduced, however true adhesive restorative materials do not exist at present, and the bonding is due to micromechanical retention of the resinous material to the tooth. As some endodontic sealing materials have high bond strength to dentin but may suffer from solubility and improper sealing ability. Consequently, evaluation of some properties of these materials may be advantageous for proper selection of which type to be used. Aim: The aim of this study was to evaluate the sealing capacity and the bond strength of two different types of root canal sealing materials. Methodology: A total of 20 single-rooted human mandibular premolar teeth with single canals were instrumented using step back technique. The prepared canals were obturated with lateral compaction technique using gutta percha and two different types of sealers; 10 with resin-based sealer (Group 1) and 10 with silicone-based sealer (Group 2). Each root was sectioned horizontally into 2 slices, each slice is 2mm, the coronal part just below the cemento-enamel junction was used in the push-out shear bond strength test. The following 2 mm slice of the filled roots was used in the sealing capacity or permeability test, using fluid filtration device. Permeability was measured by tracing the displacement of an air bubble on top of a millimeter scale for 24 hours. A random disc from each group was kept for qualitative evaluation of dentin\sealer interfaces with the scanning electron microscope. The results were subjected to statistical analysis using Kruskal Wallis and Mann Whitney tests. Results: The data indicates that the mean fluid leakage value of the silicone-based sealer (Group 2) was less than that of the resin-based sealer (Group 1). While the resin-based sealer (Group 1) exhibited higher statistically significant mean shear bond strength than silicone-based sealer. Conclusion: Improved bonding of sealers to dentin does not necessarily mean the improvement of sealing ability.
Evaluation of Sealing Ability of Three Root Canal Sealers: An In Vitro Study
The Journal of Contemporary Dental Practice
Aim: To evaluate the sealing ability of three different types of sealers using confocal laser microscopy. Materials and methods: Sixty extracted single-root premolars were selected and divided into three groups (20 teeth in each group) according to the type of sealer used, namely, mineral trioxide aggregate (MTA) Fillapex, AH Plus, and Bio C Sealer. Root canal preparation and obturation will be done in all the samples. Roots will be dissected transversely in apical plane. Percentage of gap from region to canal circumference will be calculated using a confocal laser microscope. Samples were subjected to statistical analysis. Results: High dye penetration was seen with AH Plus compared to MTA Fillapex and least with Bio C Sealer. The AH Plus is the best sealer with respect to seal ability of all the three. Conclusion: This study helps to appraise the sealing ability of the different types of sealers using confocal laser microscopy which is useful for the success of root canal treatment. Clinical significance: As sealer has to seal voids, foramina, and canals, it should have good penetration for the success of root canal treatment.
A Comparative Evaluation of Apical Sealability of Various Root Canal Sealers Used in Endodontics
Objective: One of the major reasons for root canal failure is microleakage through the apex. There are various types of root apex sealers being used in endodontic practices with varying rate of clinical success. This study was planned to evaluate the sealing ability of Zinc oxide eugenol based, Calcium hydroxide based, resin based and tricalcium based root canal sealers using dye penetration method. Material and Methods: It was an experimental study with randomized control trial. Fifty (50) extracted incisors were prepared for root canal obturation. The apical enlargement up to K file 25 was done using stepback technique and resto of the canal was flared up to K file 60.Sodium Hypochlorite was used as irrigant. After instrumentation, the 40 teeth were obturated using various sealers and 10 were obturated without any sealer followed by lateral condensation technique. Prepared samples were divided into four groups (10 teeth each with one of the sealers) of experimental study and two groups (5 teeth each without sealer) for control. 45 samples were coronally sealed with sticky wax and surface coated with nail polish leaving apical 2 mm. Among samples obturated without a sealer, 5 were coronally sealed with sticky wax but surface treated to the full length of the root. All the samples were then assessed for 2% methylene blue dye penetration test. Results: Inter group comparison showed that samples apically obturated with tricalcium phosphate sealer performed the best sealing ability as compared to other ones used in the study. Conclusion: No sealer used in this study perfectly seals apex.
Medical Principles and Practice, 2017
Objective: To evaluate the push-out bond strength and failure modes of different sealers/obturation systems to intraradicular dentin at 2 weeks and 3 months after obturation compared to AH Plus®/gutta-percha. Materials and Methods: A total of 180 root slices from 60 single-canal anterior teeth were prepared and assigned to 5 experimental groups (n = 36 in each group), designated as G1 (AH Plus®/gutta-percha), G2 (TotalFill BC™ sealer/BC-coated gutta-percha), G3 (TotalFill BC™ sealer/gutta-percha), G4 (EndoREZ® sealer/EndoREZ®-coated gutta-percha), and G5 (EndoREZ® sealer/gutta-percha). Push-out bond strengths of 18 root slices in each group were assessed at 2 weeks and the other 18 at 3 months after obturation using a universal testing machine. Data were analyzed using repeated measures ANOVA. An independent t test was used to compare the mean push-out bond strength for each group at 2 weeks and 3 months after obturation. Results: The mean push-out bond strengths of G4 and G5 were s...
Journal of Applied Oral Science, 2006
his in vivo study evaluated the sealing ability of a resin-based sealer (AH Plus) and a zinc oxide-eugenol sealer (Endofill) in dogs' teeth, exposed to the oral environment for 45 and 90 days. Forty eight lower incisors from 8 dogs were endodonticaly treated. A stratified randomization determined the sealer use in each root canal. All canals were filled using the lateral condensation technique. The excess filling material at the cervical portion of the root canal was sectioned, leaving a 10-mm obturation length inside the canal. Teeth were provisionally sealed with glass ionomer cement for 24 h and the canals were exposed to the oral environment for either 45 or 90 days. Therefore, the experimental groups were as follows: A45-AH Plus for 45 days; A90-AH Plus for 90 days; E45-Endofill for 45 days; and E90-Endofill for 90 days (n=12). After the experimental period, the dogs were killed and the lower jaw was removed. The incisors were extracted and the roots were covered with two coats of nail varnish. The teeth were immersed in India ink for 96 h and submitted to diaphanization. Dye leakage (in mm) was measured using stereomicroscopy (10x magnification). The results were statistically analyzed using two-way ANOVA and Tukey test for multiple comparisons (á = 0.05). Group E90 (2.03±0.94) showed significantly higher mean leakage value than all other groups (p<0.001). None of the sealers, in both study conditions, were able to prevent dye leakage. Uniterms: Root canal filling; Leakage; Endodontic sealer. ste estudo in vivo avaliou a capacidade de selamento de um cimento endodôntico resinoso (AH Plus) e um a base de óxido de zinco eugenol (Endofill), em dentes de cães, expostos ao meio bucal, por 45 e 90 dias. Foi realizado o tratamento endodôntico de 48 incisivos inferiores de 8 cães. Uma randomização estratificada determinou o tipo de cimento a ser usado em cada canal que foram tratados pela técnica de condensação lateral. Após a obturação, o excesso de material obturador, na porção cervical do canal radicular foi seccionado, restando o comprimento de 10 mm no interior do canal radicular. Os dentes foram selados, provisoriamente, com cimento de ionômero de vidro por 24 h. A seguir, o selamento coronário foi removido e os canais ficaram expostos ao meio bucal. Desta forma, delineou-se os seguintes grupos experimentais: A45-AH Plus por 45 dias; A90-AH Plus por 90 dias; E45-Endofill por 45 dias; e E90-Endofill por 90 dias (n=12). Passado o período experimental, os cães foram mortos e as mandíbulas removidas. Realizou-se a exodontia dos incisivos e as suas raízes foram impermeabilizadas com duas camadas de esmalte para unhas. Os dentes foram imersos em tinta nanquim por 96 h. Após realizou-se a diafanização dos espécimes e a infiltração de corante foi medida (em mm) com auxílio de uma lupa esteroscópica, em aumento de 10x. Os resultados foram analisados estatisticamente através da Análise de Variância de dois fatores e Teste de Comparações Múltiplas de Tukey (á = 0.05). O grupo E90 (2.03±0.94) apresentou uma infiltração média significativamente maior do que a ocorrida nos demais grupos (p<0.001). Os cimentos avaliados, nos dois períodos experimentais, não foram capazes de impedir a infiltração de corante. Unitermos: Obturação endodôntica; Infiltração; Cimento endodôntico.