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Development Strategy of Endodontic Filling Materials Based on Engineering and Medical Approaches. Processes (Basel) 2021. [DOI: 10.3390/pr9112014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
This article is a literature review aimed at presenting the general state of knowledge in manufacturing engineering and materials engineering to develop engineering materials applied for endodontic treatment as filling materials. Particular attention was paid to theoretical analyses concerning the selection of methods for developing and obturating root canals and discussing the results of experimental studies available in the literature. These activities aimed to compare the importance of the most commonly used endodontic filling materials based on gutta-percha or polymeric polyester materials, commonly known as resilon, respectively. The motivation to take up this complex, multi-faceted topic in this paper is the extent of caries, periodontal disease, and other oral diseases in 3 to 5 billion people, often affecting toothlessness and contributing to an increase in the index of disability-adjusted life years (number). Endodontics is an important element of the authors’ concept of Dentistry Sustainable Development (DSD) > 2020. The principles of qualifying patients for endodontic treatment are discussed. The introduction of rotary tools, especially manufactured from Nitinol alloy, to develop root canals and the latest thermohydraulic and condensation techniques for obturation guarantee progress in endodontics. The “Digital Twins” methodology was used, rooted in the idea of Industry 4.0 and the resulting idea of Dentistry 4.0, as well as knowledge management methods, to perform experimental research in virtual space, concerning methods of developing and obturating the root canal and assessing the tightness of fillings. Microscopic visualization methods were also used. Significant factors determining the effectiveness of endodontic obturation are the selection of the filling material and the appropriate obturation method. The generalized dendrological matrix of endodontic filling materials considers the criteria of mechanical strength influencing the potential root fracture and the quality of root canal filling. The results of the SWOT point analysis (strengths and weaknesses, opportunities, threats) were also compared. For both filling materials, the weaknesses are much less than the strengths, while the threats are slightly less than the opportunities for the gutta-percha-based material, while for resilon the opportunities are much smaller than the threats. It requires the application of an appropriate development strategy, i.e., MAXI-MAXI in the case of a filling material based on gutta-percha and MAXI-MINI in the case of resilon. Therefore, the analysis of these experimental data does not indicate the real competitiveness of resilon for the gutta-percha-based material. This material deservedly maintains its strong position as the “Gold Standard of Endodontics”.
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What Are the Chances of Resilon to Dominate the Market Filling Materials for Endodontics? METALS 2021. [DOI: 10.3390/met11111744] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
This paper is a literature review with additional virtual analyses of the authors’ own experimental research results. Knowledge from various areas was synergistically combined, appropriately for concurrent engineering, presenting several possible methodological approaches used in research, optimizing the selection of engineering materials and the conditions of their application with particular application in endodontics. Particular attention was paid to the theoretical aspects of filling material strengths, weaknesses, opportunities, and threats SWOT analysis. Attention was paid to the original concepts of Sustainable Dentistry Development in conjunction with Dentistry 4.0, which includes endodontics as an important element. The dentists’ actions, among others, in conservative dentistry, along with endodontics, requires close cooperation with engineers and the enginering sciences. Methods of root canal preparation were described, together with selected tools, including those made of nitinol. Principles concerning the process of cleaning and shaping the pulp complex are presented. The importance of obturation methods, including the Thermo-Hydraulic-Condensation THC technique, and the selection of filling materials with the necessary sealants for the success of endodontic treatment are discussed. The experimental studies were carried out in vitro on human teeth removed for medical reasons, except for caries, for which two groups of 16 teeth were separated. After the root canal was prepared, it was filled with studs and pellets of a filling material based on polyester materials, which has gained the common trade name of resilon or, less frequently, RealSeal (SybronEndo) with an epiphany sealant. The teeth for the first group were obturated by cold lateral condensation. In the second case the obturation was performed using the Thermo-Hydraulic-Condensation technique using System B and Obtura III. The experimental leakage testing was done using a scanning electron microscope SEM and a light stereoscopic microscope LSM, as typical research tools used in materialography. The research results, in a confrontation with the data taken from the literature studies, do not indicate the domination of resilon in endodontics.
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Sealing Ability of Endodontic Cements: An In Vitro Study. Int J Dent 2020; 2020:5862598. [PMID: 32104179 PMCID: PMC7040419 DOI: 10.1155/2020/5862598] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 01/10/2020] [Indexed: 11/23/2022] Open
Abstract
The root canal system must be obturated using a hermetic seal to prevent the penetration of microorganisms and bacterial toxins into the endodontic system. The principles of adhesive dentistry have been increasingly used in endodontics. In fact, resin-based sealers are increasingly used. The objective of this study was to evaluate, in vitro, the sealing ability of resin cement in comparison with calcium hydroxide-based cement. Materials and Methods. Eighty root canals were prepared with the Tilos system and were randomly divided into four groups according to the filling material. The best combination was evaluated on the basis of its sealing ability. The dye infiltration degree was evaluated using both a stereomicroscope after diaphanization and the dye rise test. Results. A significant difference was observed between the four obturation systems with regard to the number of infiltrated walls (p=0.014) and the infiltration depth (p=0.025). The group of teeth obturated with EndoREZ® and EndoREZ® gutta cones differ significantly from the group obturated with EndoREZ® cement and gutta-percha cones in terms of apical sealing (p=0.011). A significant difference was also observed between the group of teeth obturated using EndoREZ® gutta cones and EndoREZ® cement and the group of teeth obturated with EndoREZ® cement (p=0.026). Conclusion. When used with EndoREZ® gutta cones, EndoREZ® cement showed the best sealing ability, particularly in the apical region. When used with gutta-percha cones, Acroseal and EndoREZ® cements exhibited similar sealing abilities.
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Dentinal tubule penetration of AH Plus, BC Sealer and a novel tricalcium silicate sealer: a confocal laser scanning microscopy study. Clin Oral Investig 2018; 23:1871-1876. [DOI: 10.1007/s00784-018-2632-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 09/11/2018] [Indexed: 10/28/2022]
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Ballullaya SV, Vinay V, Thumu J, Devalla S, Bollu IP, Balla S. Stereomicroscopic Dye Leakage Measurement of Six Different Root Canal Sealers. J Clin Diagn Res 2017; 11:ZC65-ZC68. [PMID: 28764296 DOI: 10.7860/jcdr/2017/25780.10077] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 05/29/2017] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Hermetic sealing of the root canal is the most desirable outcome of any root canal treatment, but almost always the filling of the root canal is defective, which is a multifactorial outcome. One such factor majorly influencing the obturation is the root canal sealer used. AIM The present study was done for evaluating microleakage in different root canal sealers. MATERIALS AND METHODS Sixty extracted human single rooted teeeth were used in this in-vitro study. Sealers tested for microleakage in this study were zinc oxide eugenol based sealer, Sealapex, AH Plus, MTA Plus, EndoRez, Endosequence BC. All the specimens were examined under stereomicroscope for microleakage and the obtained data were statistically analysed using One-way ANOVA test and Tukey's multiple comparision tests using the software GraphPad Prism 7.02. RESULTS The Endosequence BC group showed the least dye leakage and the highest leakage was seen in Zinc oxide Eugenol based sealer. CONCLUSION Bio ceramic salers being hydrophilic show better sealing ability compared to resin based and eugenol based sealers.
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Affiliation(s)
- Srinidhi V Ballullaya
- Reader, Department of Conservative Dentistry and Endodontics, St. Joseph Dental College, Eluru, Andhra Pradesh, India
| | - Vusurumarthi Vinay
- Postgraduate student, Department of Conservative Dentistry and Endodontics, St. Joseph Dental College, Eluru, Andhra Pradesh, India
| | - Jayaprakash Thumu
- Head and Professor, Department of Conservative Dentistry and Endodontics, St. Joseph Dental College, Eluru, Andhra Pradesh, India
| | - Srihari Devalla
- Professor, Department of Conservative Dentistry and Endodontics, St. Joseph Dental College, Eluru, Andhra Pradesh, India
| | - Indira Priyadarshini Bollu
- Reader, Department of Conservative Dentistry and Endodontics, St. Joseph Dental College, Eluru, Andhra Pradesh, India
| | - Sagarika Balla
- Postgraduate student, Department of Conservative Dentistry and Endodontics, St. Joseph Dental College, Eluru, Andhra Pradesh, India
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Deniz Sungur D, Purali N, Coşgun E, Calt S. Push-out bond strength and dentinal tubule penetration of different root canal sealers used with coated core materials. Restor Dent Endod 2016; 41:114-20. [PMID: 27200279 PMCID: PMC4868874 DOI: 10.5395/rde.2016.41.2.114] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 03/01/2016] [Indexed: 11/11/2022] Open
Abstract
Objectives The aim of this study was to compare the push-out bond strength and dentinal tubule penetration of root canal sealers used with coated core materials and conventional gutta-percha. Materials and Methods A total of 72 single-rooted human mandibular incisors were instrumented with NiTi rotary files with irrigation of 2.5% NaOCl. The smear layer was removed with 17% ethylenediaminetetraacetic acid (EDTA). Specimens were assigned into four groups according to the obturation system: Group 1, EndoRez (Ultradent Product Inc.); Group 2, Activ GP (Brasseler); Group 3, SmartSeal (DFRP Ltd. Villa Farm); Group 4, AH 26 (Dentsply de Trey)/gutta-percha (GP). For push-out bond strength measurement, two horizontal slices were obtained from each specimen (n = 20). To compare dentinal tubule penetration, remaining 32 roots assigned to 4 groups as above were obturated with 0.1% Rhodamine B labeled sealers. One horizontal slice was obtained from the middle third of each specimen (n = 8) and scanned under confocal laser scanning electron microscope. Tubule penetration area, depth, and percentage were measured. Kruskall-Wallis test was used for statistical analysis. Results EndoRez showed significantly lower push-out bond strength than the others (p < 0.05). No significant difference was found amongst the groups in terms of percentage of sealer penetration. SmartSeal showed the least penetration than the others (p < 0.05). Conclusions The bond strength and sealer penetration of resin-and glass ionomer-based sealers used with coated core was not superior to resin-based sealer used with conventional GP. Dentinal tubule penetration has limited effect on bond strength. The use of conventional GP with sealer seems to be sufficient in terms of push-out bond strength.
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Affiliation(s)
- Derya Deniz Sungur
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
| | - Nuhan Purali
- Department of Biophysics, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Erdal Coşgun
- Department of Biostatistics, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Semra Calt
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
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Ormiga F, Ferreira de Assis D, de Andrade Risso P. Ability of Three Endodontic Sealers to Fill the Root Canal System in Association with Gutta-Percha. Open Dent J 2016; 10:12-8. [PMID: 27006719 PMCID: PMC4780516 DOI: 10.2174/1874210601610010012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 11/10/2015] [Accepted: 11/16/2015] [Indexed: 11/22/2022] Open
Abstract
Introduction: The present study compared the ability of the
endodontic sealers AH Plus, Pulp Canal Sealer and EndoREZ to fill the root canal
system in association with gutta-percha. Methods: Ninety
mandibular premolars were accessed, prepared and divided into three groups of 30
teeth each, according to the sealer used to fill the canals: AH Plus, Pulp Canal
Sealer and EndoREZ. All the teeth were filled using the continuous wave of
condensation technique. The specimens were then decalcified, dehydrated,
rendered transparent, and analyzed by three independent evaluators with 8x
magnification. Chi-squared test (χ2, p < 0.05) was used to compare
the groups in relation to the totally filled, the partially filled and the non
filled ramifications. The same test was used to compare the directions of filled
ramifications and the number of ramifications among the three thirds of the
roots. Results: EndoREZ filled a significantly higher
number of ramifications than AH Plus and Pulp Canal Sealer (χ2, p <
0.05). All the groups showed higher number of totally filled ramifications than
partially filled and unfilled ramifications. The ramifications were more
frequently detected in the apical third, followed by medium and coronal thirds,
respectively (χ2, p < 0.05). The ramifications were more frequently
detected towards lingual direction (χ2, p < 0.05). Conclusion: EndoREZ presented higher ability to fill
the root canal system in association with gutta-percha when compared to AH Plus
and Pulp Canal Sealer. The ramifications were more frequently detected in the
apical third, running in a lingual direction.
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Affiliation(s)
- Fabiola Ormiga
- Department of Clinical Dentistry, Federal University of Rio de Janeiro, Brazil
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Samiei M, Aghazade M, Farhadi F, Shahveghar N, Torab A, Vahid Pakdel SM. Sealing Efficacy of Single-cone Obturation Technique with MTA and CEM Cement: An in Vitro Bacterial Leakage Study. J Dent Res Dent Clin Dent Prospects 2014; 8:77-83. [PMID: 25093050 PMCID: PMC4120909 DOI: 10.5681/joddd.2014.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Accepted: 12/12/2013] [Indexed: 11/21/2022] Open
Abstract
Background and aims. Various materials and methods have been introduced for obturating cleaned and shaped root canal systems. This in vitro study aimed to evaluate the sealing ability of single-cone obturation technique with mineral trioxide aggregate and calcium-enriched mixture based on bacterial leakage approach. Materials and methods. Sixty-four single-canal teeth were prepared and randomly divided into 5 groups, consisting of three experimental groups (n = 16) and two control groups (n = 8).In group 1, root canal obturation was performed using gutta-percha with 0.02 taper and AH26 sealer by lateral compaction technique. In groups 2 and 3, single Protaper gutta-percha cone was used for obturation with MTA and CEM cement, respectively. A bacterial leakage apparatus was utilized for leakage assessment for 60 days. Leakage comparison between the experimental groups was performed by one-way ANOVA using SPSS 16 statistical software. Results. The mean bacterial leakage intervals in groups 1, 2 and 3 were 33.68 ± 9.39, 40.68 ± 11.03 and 39.56 ± 9.03 days, respectively. One-way ANOVA indicated no significant differences in bacterial leakage between the three experimen-tal groups (P = 0.109). Conclusion. Single-cone obturation with well-fitted gutta-percha and MTA and CEM cement is an appropriate alternative for traditional lateral compaction technique.
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Affiliation(s)
- Mohammad Samiei
- Assistant Professor, Department of Endodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Aghazade
- Assistant Professor, Department of Microbiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Farrokh Farhadi
- Assistant Professor, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Naeimeh Shahveghar
- Under-graduate Student, Student Research Committee, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ali Torab
- Under-graduate Student, Student Research Committee, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Seyyed Mahdi Vahid Pakdel
- Post-graduate Student, Department of Prosthodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
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Patil SA, Dodwad PK, Patil AA. An in vitro comparison of bond strengths of Gutta-percha/AH Plus, Resilon/Epiphany self-etch and EndoREZ obturation system to intraradicular dentin using a push-out test design. J Conserv Dent 2013; 16:238-42. [PMID: 23833458 PMCID: PMC3698588 DOI: 10.4103/0972-0707.111323] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Revised: 01/05/2013] [Accepted: 01/11/2013] [Indexed: 11/16/2022] Open
Abstract
Aim: To evaluate and compare the push-out bond strengths of three obturation materials; Gutta-percha/AH Plus, Resilon/Epiphany self-etch (SE) and EndoREZ obturation system to intraradicular dentin. Materials and Methods: Sixty single-canal anterior teeth were prepared and assigned to experimental groups (n = 20), designated as Group I: Gutta-percha/AH Plus, Group II: Resilon/Epiphany SE and Group III: EndoREZ sealer/EndoREZ points. After obturation, each tooth was prepared for push-out assessment with root slices of 2 mm thickness using universal testing machine. Statistical Analysis: Two way analysis of variance and Scheffe's test. Results: Gutta-percha/AH Plus root fillings showed significantly highest bond strength. Also, root segment location did not have a significant influence on bond strength. Conclusion: The adhesiveness quality to root dentin promoted by newer methacrylate resin-based obturation systems like Resilon/Epihany SE and EndoREZ is compromised even when teeth with simple anatomic features were obturated under well-monitored laboratory conditions.
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Affiliation(s)
- Sanjana A Patil
- Department of Conservative Dentistry and Endodontics, KLEVK Institute of Dental Sciences, Belgaum, Karnataka, India
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Ersahan S, Aydin C. Solubility and apical sealing characteristics of a new calcium silicate-based root canal sealer in comparison to calcium hydroxide-, methacrylate resin- and epoxy resin-based sealers. Acta Odontol Scand 2013; 71:857-62. [PMID: 23088627 DOI: 10.3109/00016357.2012.734410] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AIM To assess and compare the water sorption, solubility and apical sealing ability of iRoot SP and three other widely used root canal sealers. MATERIALS AND METHODS Solubility was assessed by immersing standardized samples of calcium silicate- (iRoot SP), calcium hydroxide- (Sealapex), methacrylate resin- (EndoREZ) and epoxy resin- (AH Plus) based sealers in distilled water and measuring weight gain and weight loss at 6 h, 24 h and daily for 14 days. Roots of extracted mandibular premolars (n = 80) were prepared with 0.04-taper nickel-titanium rotary files to a final size 40. Roots were then randomly divided into four experimental groups (n = 18) and two control groups (n = 4), root canal sealers were applied and apical leakage was assessed using the fluid filtration method. Data was analyzed using Kruskal Wallis analysis of variance and Mann-Whitney U-tests, with the level of significance set at p ≤ 0.05. RESULTS EndoREZ exhibited the highest water sorption, followed by iRoot SP, Sealapex and AH Plus. Sealapex exhibited significantly higher solubility than the other sealers, whereas no significant differences in solubility levels were observed between the other three sealers tested. AH Plus exhibited significantly lower microleakage than Sealapex and EndoREZ, whereas no difference in microleakage was found between AH Plus and iRoot SP. CONCLUSIONS In view of the study findings, all tested sealers except Sealapex met the ANSI/ADA's requirements for solubility and no difference was found between AH Plus and iRoot SP in terms of apical sealing ability.
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Affiliation(s)
- Seyda Ersahan
- Department of Endodontics, Center for Dental Sciences, Gulhane School of Medicine, Ankara, Turkey
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Barbizam JVB, Trope M, Tanomaru-Filho M, Teixeira ECN, Teixeira FB. Bond strength of different endodontic sealers to dentin: push-out test. J Appl Oral Sci 2012; 19:644-7. [PMID: 22231001 PMCID: PMC3973468 DOI: 10.1590/s1678-77572011000600017] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2009] [Accepted: 03/27/2010] [Indexed: 11/21/2022] Open
Abstract
Objective The aim of this in vitro study was to evaluate the bond strength
of different root canal sealers to dentin. Material and Methods Forty extracted single-rooted human teeth were examined and the coronal and middle
thirds of the canals were prepared with a 1.50 mm post drill (FibreKor Post
System, Pentron). The teeth were allocated in two experimental groups, irrigated
with 2.5% NaOCl+17% EDTA or saline solution (control group) and instrumented using
Race rotary files (FKG) to a size #40 at the working length. Then, the groups were
divided into four subgroups and filled with Epiphany sealer (Group 1), EndoREZ
(Group 2), AH26 (Group 3) and Grossman's Sealer (Group 4). After 2 weeks of
storage in 100% humidity at 37ºC, all teeth were sectioned transversally into
2-mm-thick discs. Push-out tests were performed at a cross-head speed of 1 mm/min
using a universal testing machine. The maximum load at failure was recorded and
expressed in MPa. Results Means (±SD) in root canals irrigated with 2.5% NaOCl and 17% EDTA were: G1
(21.6±6.0), G2 (15.2±3.7), G3 (14.6±4.5) and G4 (11.7±4.1).Two-way ANOVA and
Tukey's test showed the highest bond strength for the Epiphany's group (p<
0.01) when compared to the other tested sealers. Saline solution decreased the
values of bond-strength (p<0.05) for all sealers. Conclusion Epiphany sealer presented higher bond strength values to dentin in both irrigating
protocols, and the use of 2.5% NaOCl and 17% EDTA increased the bond strength
values for all sealers.
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Haragushiku GA, Teixeira CS, Furuse AY, Sousa YTS, De Sousa Neto MD, Silva RG. Analysis of the interface and bond strength of resin-based endodontic cements to root dentin. Microsc Res Tech 2011; 75:655-61. [DOI: 10.1002/jemt.21107] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Accepted: 09/19/2011] [Indexed: 11/08/2022]
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Belli S, Cobankara FK, Ozcopur B, Eliguzeloglu E, Eskitascioglu G. An Alternative Adhesive Strategy to Optimize Bonding to Root Dentin. J Endod 2011; 37:1427-32. [DOI: 10.1016/j.joen.2011.06.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2011] [Revised: 06/15/2011] [Accepted: 06/21/2011] [Indexed: 10/17/2022]
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Cecchin D, Farina AP, Souza MA, Pereira CDC. Effect of root-canal sealer on the bond strength of fiberglass post to root dentin. Acta Odontol Scand 2011; 69:95-100. [PMID: 21105846 DOI: 10.3109/00016357.2010.536908] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE To evaluate the effects of different root-canal sealers on the bond strength of a fiberglass post cemented with self-adhesive resin cements. MATERIAL AND METHODS Forty extracted maxillary single-rooted canines were prepared with the crown-down technique and randomly divided into four groups according to the tested sealer: Group 1: control group, gutta-percha cone only (no sealer); Group 2: EndoREZ; Group 3: Sealapex; Group 4: Endofill. The roots were obturated with the gutta-percha cone using the cold lateral compaction technique. Fiberglass posts were cemented into the prepared post spaces with the self-adhesive cement RelyX Unicem. Bonded specimens were sectioned into 1-mm thick slabs and a push-out test was performed in a universal machine. RESULTS Data were subjected to ANOVA and Tukey tests (α = 0.05). No significant difference was detected between Groups 1-3 (P > 0.05). Group 4 showed a lower bond strength than the other sealers (P < 0.05). CONCLUSIONS Endofill negatively interfered with the bond to root dentine; however, EndoRez and Sealapex did not affect the bond strength of the fiberglass post cemented with self-adhesive resin cements.
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Affiliation(s)
- Doglas Cecchin
- Department of Restorative Dentistry, Endodontics Area, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil.
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Marin-Bauza GA, Rached-Junior FJA, Souza-Gabriel AE, Sousa-Neto MD, Miranda CES, Silva-Sousa YTC. Physicochemical Properties of Methacrylate Resin–based Root Canal Sealers. J Endod 2010; 36:1531-6. [DOI: 10.1016/j.joen.2010.05.002] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2010] [Revised: 05/07/2010] [Accepted: 05/19/2010] [Indexed: 11/27/2022]
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Clinical and radiographic evaluation of a resin-based root canal sealer: an eight-year update. J Endod 2010; 36:1311-4. [PMID: 20647086 DOI: 10.1016/j.joen.2010.04.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2010] [Revised: 04/26/2010] [Accepted: 04/29/2010] [Indexed: 11/23/2022]
Abstract
INTRODUCTION This retrospective clinical and radiographic study evaluated the 8-year outcome of one-visit endodontic treatment of root canals filled with gutta-percha and a methacrylate resin-based sealer (EndoREZ). METHODS From an initial sample size of 180 patients, subsequently 145 and 120 patients were evaluated after 14-18 months and 5 years, respectively. Of the remaining patient pool of 120 patients evaluated after 5 years, 112 patients with 212 root canals responded to the 8-year recall. The outcome of treatments was assessed on the basis of clinical and radiographic criteria. Endodontic success was rated on the basis of absence of clinical symptoms, the presence of a normal or slightly widened periodontal ligament space, and absence or substantial reduction in size of preexisting periradicular radiolucencies. Teeth that did not meet these criteria were considered endodontic failures. RESULTS The root canals had been adequately filled to the working length in 90 teeth (80.35%) and were short in 19 instances (16.96%). None of the roots showing apical extrusion of the sealer immediately postoperatively had radiographic evidence of the sealer in the periradicular tissues after 8 years. At recall, all patients were comfortable and free of clinical symptoms. A life table analysis showed a cumulative probability of success of 86.5% after 8 years, with a 95% confidence interval of 79.0-92.0. CONCLUSIONS The results of this retrospective clinical and radiographic study suggest that the tested methacrylate resin-based sealer used in conjunction with gutta-percha cones performed similarly to conventional endodontic sealers during a period of up to 8 years.
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Karapinar-Kazandağ M, Tanalp J, Bayrak OF, Sunay H, Bayirli G. Microleakage of various root filling systems by glucose filtration analysis. ACTA ACUST UNITED AC 2010; 109:e96-102. [PMID: 20417137 DOI: 10.1016/j.tripleo.2010.01.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2009] [Revised: 01/03/2010] [Accepted: 01/12/2010] [Indexed: 11/15/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate the microleakage of Resilon + Epiphany, EndoRez, Activ GP, and conventional AH Plus + gutta-percha technique using the glucose filtration model. STUDY DESIGN One hundred twenty maxillary incisors were divided into 5 experimental and 2 control groups. After root canal shaping, the experimental groups were filled with AH Plus + gutta-percha (lateral compaction), Resilon + Epiphany (lateral compaction), AH Plus + Protaper's proprietory cone, EndoRez + sealer, or Activ GP + sealer). The specimens were mounted on a glucose model and samples were taken for 3 weeks for leakage measurement. RESULTS No statistically significant difference was observed between the leakage of all groups at the 3 testing periods (P > .05). CONCLUSION The filling materials with the monoblock concept do not seem to be superior to the conventional AH Plus + gutta-percha system regarding microleakage.
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Critical Review on Methacrylate Resin–based Root Canal Sealers. J Endod 2010; 36:383-99. [DOI: 10.1016/j.joen.2009.10.023] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2009] [Revised: 10/13/2009] [Accepted: 10/18/2009] [Indexed: 10/20/2022]
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Koçak MM, Yaman SD. Comparison of apical and coronal sealing in canals having tapered cones prepared with a rotary NiTi system and stainless steel instruments. J Oral Sci 2009; 51:103-7. [PMID: 19325206 DOI: 10.2334/josnusd.51.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
The purpose of this study was to compare the sealing ability of different tapered gutta percha cones that were used with lateral compaction and single cones in canals prepared with various root canal instruments. One hundred extracted maxillary incisor roots were used. In group 1, 30 roots were prepared with stainless steel instruments (SS) and then filled by the lateral compaction technique using .02 tapered master cones. In group 2, 30 roots were prepared with ProFile nickel titanium instruments (NiTi) and filled in the same way as group 1. In group 3, 30 roots were filled by the single cone technique using 0.06 tapered gutta-percha cones. The remaining 10 teeth were taken as two control groups. Apical and coronal leakage was evaluated using the fluid filtration model. Considering the effects of the instrumentation, no statistically significant differences were found between the groups prepared with SS and NiTi (P > 0.05). When the effects of obturation technique were taken into consideration, the ProFile instruments and lateral compaction resulted in significantly less coronal leakage than the SS instruments and lateral compaction (P < 0.05). There were no significant differences in apical leakage among any of the groups (P > 0.05).
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Affiliation(s)
- M Murat Koçak
- Department of Endodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey
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Teixeira CS, Pasternak-Junior B, Borges AH, Paulino SM, Sousa-Neto MD. Influence of endodontic sealers on the bond strength of carbon fiber posts. J Biomed Mater Res B Appl Biomater 2008; 84:430-5. [PMID: 17595025 DOI: 10.1002/jbm.b.30888] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE The aim of this study was to verify the influence of endodontic sealers on the bond strength of an adhesive system and a resin cement used for carbon posts cementation. METHODS Thirty extracted human premolars were instrumented and randomly divided into three groups according to the tested sealer: EndoFill, Sealapex, or EndoREZ. Specimens were stored at 37 degrees C. After 48 h, half of specimens were prepared to receive the post and the others after 7 days. The posts were cemented with Adper Single Bond/Rely X ARC and stored in distilled water at 37 degrees C for 7 days. After this period, the specimens were sectioned in three slices (coronal, middle, and apical). The push-out test was performed in a universal machine and the debonded area was examined in a stereomicroscope. RESULTS Data were submitted ANOVA and Tukey test (alpha = 0.05). The EndoFill showed lower bond strength than other sealers (p < 0.01). The EndoREZ sealer was statistically greater than other groups for coronal and middle portions and similar for apical portion (p > 0.05). Coronal and middle portions showed the best results for all groups, mainly when the canal preparation was performed after 48 h (p < 0.01). Mixed failure occurs with more frequency (55.6%) followed by failure in adhesive-dentin interface (34.4%) and adhesive-post interface (10.0%). CONCLUSION The use of EndoREZ sealer promoted higher bond strength in root coronal and middle portions when carbon post was fixed with a resin cement.
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Affiliation(s)
- C S Teixeira
- School of Dentistry, University of Ribeirão Preto, Ribeirão Preto, SP, Brazil
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Zmener O, Pameijer CH. Clinical and Radiographical Evaluation of a Resin-based Root Canal Sealer: A 5-Year Follow-up. J Endod 2007; 33:676-9. [PMID: 17509405 DOI: 10.1016/j.joen.2007.03.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2007] [Revised: 03/06/2007] [Accepted: 03/07/2007] [Indexed: 11/29/2022]
Abstract
A retrospective clinical and radiographical analysis of 5-year postendodontic treatment with a resin-based sealer (EndoRez; Ultradent Products Inc, South Jordan, UT) and gutta-percha was conducted. The results after 14 to 24 months were reported previously. Of 180 patients, 120 responded to the 5-year recall. Success of root canal treatments was based on absence of clinical symptoms, a normal or slightly widened periodontal ligament, and absence or reduction of periapical radiolucencies in patients who had preexisting lesions. Root canals had been adequately filled to the working length in 92 teeth (76.66%) and short in 13 (10.83%). Fifteen cases (12.50%), filled flush at the initiation of the experiment, showed slight resorption of the filling material at the apex within the lumen of the root canal. Of the 10 roots with extrusion, none had radiographic evidence of sealer in the periradicular tissues after 5 years. All patients were free of clinical symptoms. Four cases (3.3%) showed partial healing, whereas 8 cases (6.66%) were judged failures. A life table analysis revealed a cumulative probability of success of 86.3% at the 5-year recall with a 95% confidence interval of 79.7 to 91.0. The clinical and radiographical data suggest that the tested resin-based sealer used in conjunction with gutta-percha performed very well as a root canal sealer over a period of up to 5 years.
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Affiliation(s)
- Osvaldo Zmener
- Postgraduate Program for Specialists in Endodontics, Faculty of Medicine, School of Dentistry, University of El Salvador, AOA, Buenos Aires, Argentina
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Monticelli F, Sword J, Martin RL, Schuster GS, Weller RN, Ferrari M, Pashley DH, Tay FR. Sealing properties of two contemporary single-cone obturation systems. Int Endod J 2007; 40:374-85. [PMID: 17326785 DOI: 10.1111/j.1365-2591.2007.01231.x] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
AIM To compare the sealing of root canals filled with two single-cone obturation systems and a warm vertical compaction technique. METHODOLOGY Forty-two single-rooted teeth were decoronated to obtain 17-mm-long root segments. The root canals were cleaned and shaped to size 40, 0.06 taper and filled with: (i) warm vertical compaction with AH Plus (control); (ii) ActiV GP and (iii) GuttaFlow with single master cones. Leakage was evaluated by fluid filtration at 10 psi before root resection, and after 3, 6, 9 and 12 mm apical resections. Repeated measures anovas on ranks and Dunn's multiple comparison tests were performed to examine differences in fluid flow rates amongst different resection lengths for each filling technique. The surface and interior aspects of glass-ionomer filler-coated ActiV GP gutta-percha cones was evaluated with SEM. RESULTS No statistical difference amongst the filling techniques was seen at 0 and 3 mm root resections. ActiV GP and GuttaFlow exhibited more leakage than AH Plus at 6, 9 and 12 mm resections. AH Plus recorded the best overall results. A nonhomogeneous coating of glass-ionomer fillers on the surface of ActiV GP cones was detected. CONCLUSIONS The two single-cone techniques examined are as effective in sealing the apex as AH Plus when the latter was used with warm vertical compaction. It is further hypothesized that the inferior coronal seal of these single-cone techniques may be improved with the placement of accessory cones to reduce sealer thickness or an immediate coronal adhesive restoration.
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Affiliation(s)
- F Monticelli
- Department of Restorative Dentistry and Dental Materials, University of Siena, Siena, Italy
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Tay FR, Pashley DH. Monoblocks in root canals: a hypothetical or a tangible goal. J Endod 2007; 33:391-8. [PMID: 17368325 PMCID: PMC2223075 DOI: 10.1016/j.joen.2006.10.009] [Citation(s) in RCA: 234] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2006] [Revised: 10/07/2006] [Accepted: 10/10/2006] [Indexed: 11/15/2022]
Abstract
The term monoblock has become familiar in the endodontic literature with recent interest in the application of dentin adhesive technology to endodontics. Endodontic monoblocks have generated controversial discussions among academicians and clinicians as to whether they are able to improve the quality of seal in root fillings and to strengthen roots. This review attempts to provide a broader meaning to the term monoblock and to see how this definition may be applied to the materials that have been used in the past and present for rehabilitation of the root canal space. The potential of currently available bondable materials to achieve mechanically homogeneous units with root dentin is then discussed in relation to the classical concept in which the term monoblock was first employed in restorative dentistry and subsequently in endodontics.
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Affiliation(s)
- Franklin R Tay
- Department of Oral Biology and Maxillofacial Pathology, School of Dentistry, Medical College of Georgia, Augusta, GA 30912, USA.
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