Effectiveness of gutta-percha and Resilon in filling lateral root canals using thermomechanical technique

OBJECTIVE: The aim of this study was to evaluate the effectiveness of gutta-percha and Resilon in filling lateral root canals in cervical, middle, and apical third using a thermomechanical technique. MATERIAL AND METHOD: Root canals of artificial teeth were prepared using a standard preparation. The lateral canals were fabricated using a 0.3-mm-diameter bur at 3 parts of each root. By using Tagger's hybrid technique with a McSpadden thermomechanical compactor, the root canal was filled using the following filling materials: Dentsply gutta-percha, Endopoint gutta-percha, and Resilon cones. The root canal fillings were evaluated using digitized radiographs and the Image Tool software. The percentage of filled area of each lateral canal was determined. The data were subjected to analysis of variance (ANOVA) and Tukey tests at a 5% significance level. RESULT: Resilon showed better effectiveness as a filling material. When the three thirds were compared, Resilon was more effective in the apical third than in the cervical third (p < 0.05). CONCLUSION: Resilon is an effective filling material for lateral root canals using a thermomechanical technique.

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Evaluation of Three Ni-Ti Systems in Retreatment of Curved Root Canals Obturated by Gutta-Percha With iRoot SP

10.21203/rs.3.rs-258140/v1 ◽

2021 ◽

Author(s):

Yi Chen ◽

Weiping Tian ◽

Lisha Wang ◽

Fan Qi ◽

Mengyu Sun ◽

...

Keyword(s):

Root Canal ◽

Filling Material ◽

Micro Ct ◽

Imaging Data ◽

Root Canals ◽

Filling Materials ◽

Gutta Percha ◽

Group I ◽

Root Canal Retreatment ◽

Curved Root Canals

Abstract Background To evaluate the retreatability of curved root canals obturated with gutta-percha (GP) and iRoot SP using three different Ni-Ti systems through micro-computed tomographic (micro-CT) analysis. Methods A total of 51 curved root canals of permanent molars with angles of curvature ranging from 20° to 40° were used. The root canals were prepared with the ProTaper Next (PTN) rotary system to size 25, .06 taper and filled with iRoot SP and GP using the single cone technique. Samples were randomly divided into three groups (n = 17 each) according to the retreatment system used: Group I. ProTaper Universal Retreatment (PTR) system + ProTaper Next system up to PTN X2; Group II. Waveone Gold (WOG) system (WOG25); Group III. Reciproc Blue (RB) system (RB25). The ability to regain apical patency, the volume of residual filling material, and dentinal microcrack were assessed using micro-CT imaging. Data were analyzed statistically using two-way analysis of variance and chi-square test with a significance level of 5%. Results There were no significant differences among the systems tested in the reestablishment of apical patency and reduction of filling materials (P > 0.05), but RB system exhibited better reestablishment root canal ability in the upper portion of curvature and the reduction of filling materials in the apical third (P < 0.05). Intergroup analysis indicated that PTR system induced significantly more dentinal microcracks than other two systems (P < 0.05). Conclusions All three tested Ni-Ti instruments showed the similar retreatability of curved root canals obturated with gutta-percha and iRoot SP. RB system may be more effective and safer in curved root canal retreatment.

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Development Strategy of Endodontic Filling Materials Based on Engineering and Medical Approaches

Processes ◽

10.3390/pr9112014 ◽

2021 ◽

Vol 9 (11) ◽

pp. 2014

Author(s):

Leszek A. Dobrzański ◽

Joanna Dobrzańska ◽

Lech B. Dobrzański ◽

Anna D. Dobrzańska-Danikiewicz ◽

Klaudiusz Gołombek

Keyword(s):

Development Strategy ◽

Root Canal ◽

Virtual Space ◽

Endodontic Treatment ◽

Filling Material ◽

Root Canals ◽

Filling Materials ◽

Gutta Percha ◽

Life Years ◽

Selection Of

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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GuttaFlow Bioseal as Monocone Obturation Technique in Curved Root Canals: A Scanning Electron Microscopy Study

Science Letters ◽

10.24191/sl.v15i2.13824 ◽

2021 ◽

Vol 15 (2) ◽

pp. 42-59

Author(s):

Musliana Mustaffa ◽

◽

Hajar Ar Rahmah Nasri ◽

Insyirah Kamarulzaman ◽

Mohamad Shafiq Mohd Ibrahim ◽

...

Keyword(s):

Surface Area ◽

Root Canal ◽

Current Approach ◽

Filling Material ◽

Sem Images ◽

Root Canals ◽

Gutta Percha ◽

Curved Root Canals ◽

Scanning Electron ◽

Group 1

The obturation quality of GuttaFlow Bioseal in curved root canals is not commonly investigated although there has been a current approach toward utilizing this material in extracted molars in recent years. This study assessed the obturated surface area, extrusion of root filling material beyond the apical foramen and duration of obturation procedure in curved root canals using monocone obturation technique. Access cavity was prepared in 20 human mandibular molars. Root canals with curvature of more than 10 as determined according to Schneider’s method were included. Samples were prepared using Hyflex CM rotary files and divided into two groups (n=10): Group 1 [gutta-percha cone and GuttaFlow Bioseal] and Group 2 [gutta-percha cone and RoekoSeal Automix root canal sealer]. The duration of obturation procedure was recorded and obturation radiographs were taken. Samples were bisected and the mesial roots were sectioned horizontally to obtain 3 root segments; apical, middle and coronal. All resected roots were mounted on brass stubs, sputter-coated with thin platinum coating and observed under scanning electron microscope (SEM) at 70x magnification. The SEM images were transferred to the SketchAndCalc Area Calculator software. No statistically significant differences in the obturated surface area and extrusion of root filling material were observed between Group 1 and 2, irrespective of the status of root canal curvature. Duration for obturation in severe root canal curvatures between Group 1 and 2 were statistically significant. Obturated surface area and extrusion of root filling material were not affected by the root canal curvature, however duration for obturation using GuttaFlow Bioseal in severe root canal curvatures was slightly longer.

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Radiographic analysis of root canal fillings: influence of two sealers on the perception of voids

Brazilian Dental Journal ◽

10.1590/s0103-64402010000200009 ◽

2010 ◽

Vol 21 (2) ◽

pp. 142-147 ◽

Cited By ~ 5

Author(s):

Augusto Bodanezi ◽

Etiene de Andrade Munhoz ◽

Norberti Bernardineli ◽

Ana Lúcia Álvares Capelozza ◽

Ivaldo Gomes de Moraes ◽

...

Keyword(s):

Sensitivity And Specificity ◽

Root Canal ◽

Ex Vivo ◽

Radiographic Analysis ◽

Radiographic Images ◽

Significance Level ◽

Root Canals ◽

Gutta Percha ◽

Root Canal Sealers

The aim of this ex vivo was to investigate if two radiopaque root canal sealers with different formulations would influence the radiographic perception of root canal fillings. The root canals of 48 extracted maxillary canines were prepared and randomly assigned to 3 groups of 16 specimens each. In each group, the root canals were filled by lateral condensation of gutta-percha and one of the tested sealers: Endométhasone, Sealer 26, or a non-radiopaque sealer. A through-and-through void was simulated in half of the specimens from each group (n=8). The buccolingual radiographic images obtained were randomly interpreted for voids existence by a radiologist and an endodontist. The differences in sensitivity and specificity between groups and examiners were compared using, respectively, Fisher's Exact and McNemar tests at 5% significance level. Both radiopaque sealers caused a significant decrease in sensitivity at the coronal part of fillings. The use of Endométhasone increased specificity values for both coronal and apical portions of the root canal fillings. In conclusion, the tested sealers influenced the radiographic perceptions of laterally condensed root canal fillings in a different way.

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Staining Potential of Calcium Hydroxide and Monochlorophenol Following Removal of AH26 Root Canal Sealer

The Journal of Contemporary Dental Practice ◽

10.5005/jcdp-9-3-56 ◽

2008 ◽

Vol 9 (3) ◽

pp. 56-63 ◽

Cited By ~ 3

Author(s):

Ali Cemal Tinaz ◽

Baǧdagül Helvaciölu Kivanç ◽

Güliz Gürgül

Keyword(s):

Calcium Hydroxide ◽

Root Canal ◽

Filling Material ◽

Root Canal Sealer ◽

Tooth Structure ◽

Root Canals ◽

Gutta Percha ◽

Anterior Teeth ◽

Tooth Surfaces ◽

Tooth Preparation

Abstract Aim The focus of this study was to examine the staining potential of calcium hydroxide (Ca(OH)2) on tooth structure following the removal of AH26 root canal sealer. Methods and Materials Fifty maxillary anterior teeth were prepared and obturated with AH26 and gutta percha. The sealers were then removed 24 hours later and the teeth were randomly divided into two groups. Ca(OH)2 was then placed in the root canals of the first group of teeth as a medicament and camphorated monochlorophenol (CMCP) was placed in the second group of teeth after the filling material was removed. The color of the external tooth surfaces was determined before tooth preparation and two weeks after the placement of the medicaments. The Z test was used for statistical analysis. Results All experimental teeth showed varying degrees of coronal discoloration with the Ca(OH)2 group showing more discoloration than the CMCP group (p<0.05). Conclusion Using Ca(OH)2 as a medicament after removing AH26 caused progressive discoloration of the teeth, whereas using CMCP caused only slight discoloration. Clinical Significance To avoid staining of the treated tooth, AH26 root canal sealer must be completely removed from the dentin walls before using a medicament. Citation Tinaz AC, Kivanç BH, Görgül G. Staining Potential of Calcium Hydroxide and Monochlorophenol Following Removal of AH26 Root Canal Sealer. J Contemp Dent Pract 2008 March; (9)3:056-063.

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Radiographic and scanning electron microscopic assessment of root canal filling remnants after endodontic re-instrumentation

Brazilian Dental Science ◽

10.14295/bds.2017.v20i1.1325 ◽

2017 ◽

Vol 20 (1) ◽

pp. 80 ◽

Cited By ~ 1

Author(s):

Luciane Geanini Pena Santos ◽

Wilson Tadeu Felippe ◽

Beatriz Dulcineia Mendes Souza ◽

Andrea Cristina Konrath ◽

Mabel Mariela Rodríguez Cordeiro ◽

...

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Root Canal ◽

Filling Material ◽

Root Canal Filling ◽

Root Canals ◽

Filling Materials ◽

Ah Plus ◽

Endodontic Retreatment ◽

Scanning Electron

Objective: Failures in endodontic treatment may occur by several reasons. Endodontic retreatment is an interesting alternative to manage this clinical problem. However, it is not possible to completely remove the root canal filling by any current retreatment technique. The aim of this study was to evaluate the presence of residual root canal filling materials after endodontic re-instrumentation. Material and Methods: Sixty extracted anterior human teeth were prepared by step-back technique with Flexofiles, K-files and Gates-Glidden (GG) burs. Between the use of each file or bur, root canals were irrigated with sodium hypochlorite (NaOCl). Smear layer was removed by irrigation with ethylenediaminetetraacetic acid and NaOCl. After drying with paper points the root canals were randomly divided into 5 groups (n = 12), according to filling material: Resilon cones/Real Seal sealer or gutta-percha cones and Endofill, Sealapex, AH Plus or MTA Fillapex sealers. After one week, root canal fillings were removed using Eucaliptol and K-files. Root canals were re-instrumented with K-files and GG burs sized larger than the first ones. The removal of root canal filling material was analyzed by radiography and scanning electron microscopy (SEM). Statistical analysis was performed using Binary Logistic Regression test (P < 0.05). Results: Radiographic and SEM analysis showed that material from the MTA Fillapex group was better removed than that from Endofill, Sealapex, AH Plus and Real Seal groups. Conclusion: After re-instrumentation, MTA Fillapex group showed less remnants into the root canals than Endofill, Sealapex, AH Plus and Real Seal groups. Residual material was most often found in the apical third.Keywords Dental radiography; Endodontic retreatment; Root canal filling materials; Scanning electron microscopy.

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The Effect of Ultrasonic Agitation on the Porosity Distribution in Apically Perforated Root Canals Filled with Different Bioceramic Materials and Techniques: A Micro-CT Assessment

Journal of Clinical Medicine ◽

10.3390/jcm10214977 ◽

2021 ◽

Vol 10 (21) ◽

pp. 4977

Author(s):

Saulius Drukteinis ◽

Goda Bilvinaite ◽

Hagay Shemesh ◽

Paulius Tusas ◽

Vytaute Peciuliene

Keyword(s):

Root Canal ◽

Micro Computed Tomography ◽

Root Canal Filling ◽

Porosity Distribution ◽

Significance Level ◽

Ultrasonic Agitation ◽

Root Canals ◽

Gutta Percha ◽

Before And After ◽

Rotary Instrument

The present study evaluated the effect of ultrasonic agitation on the porosity distribution of BioRoot RCS/single gutta-percha cone (BR/SC) and MTA Flow (MF) root canals fillings used as apical plugs in moderately curved and apically perforated roots. Eighty mesial root canals of mandibular first molars were enlarged up to ProTaper NEXT X5 rotary instrument 2 mm beyond the apical foramen, simulating apical perforations. Specimens were randomly divided into four experimental groups (20 canals per group) according to the material and technique used for root canal obturation: BR/SC, BR/SC with ultrasonic agitation (BR/SC-UA), MF and MF with ultrasonic agitation (MF-UA). The ultrasonic tip was passively inserted into the root canal after the injection of flowable cement and activated for 10 s. The specimens were scanned before and after obturation with a high-resolution micro-computed tomography scanner, and the porosity of the apical plugs was assessed. The differences between groups were analyzed using the Kruskal-Wallis and Mann-Whitney tests, with the significance level set at 5%. None of the obturation materials and techniques used in this study was able to provide a pore-free root canal filling in the apical 5 mm. Considerably higher percentages of open and closed pores were observed in the MF and MF-UA groups, with the highest porosity being in the MF-UA group (p < 0.05). No significant differences were observed between the BR/SC and BR/SC-UA groups, where the quantity of open and closed pores remained similar (p > 0.05).

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In vitro evaluation of apical microleakage using different root-end filling materials

Journal of Applied Oral Science ◽

10.1590/s1678-77572006000100010 ◽

2006 ◽

Vol 14 (1) ◽

pp. 49-52 ◽

Cited By ~ 5

Author(s):

Márcia Carneiro Valera ◽

Carlos Henrique Ribeiro Camargo ◽

Alessandra Sverberi Carvalho ◽

Eduardo Ramalho Pereira Gama

Keyword(s):

Zinc Oxide ◽

Root Apex ◽

Tissue Fluid ◽

Filling Material ◽

Human Teeth ◽

Root Canals ◽

Filling Materials ◽

Gutta Percha ◽

Significant Difference

The objective of this study was to evaluate the apical leakage of retrograde cavities filled with Portland Cement (Concrebrás S/A-MG-Brazil), ProRoot MTA TM (Dentsply International, Johnson City, TN, USA) and Sealapex (Kerr Corporation, Orange, California, USA) with addition of zinc oxide (Odahcam Herpo Produtos Dentários Ltda, Rio de Janeiro, RJ, Brazil). Forty-two extracted single-rooted human teeth were decoronated and used for this study. The root canals were instrumented at 1.0mm short of the apical foramen using the step-back technique to an apical ISO size 60. The roots were obturated with gutta-percha points and sealer Sealapex (Kerr Corporation-USA) and then 3mm of each root apex was sectioned at a 90° angle. Ultrasonic retrograde preparation was performed with a diamond tip to 3mm depth and the roots were randomly divided into 3 groups according to the filling material: G1-Portland, G2-ProRoot MTA, G3- Sealapex zinc oxide-added cement. The root surfaces were covered with nail varnish up to 2mm from the apical foramen, immersed in simulated tissue fluid for 30 days, and then immersed in 0.2% Rhodamine B solution for 24 hours for evaluation of marginal leakage. The results showed mean leakage of 0.75, 0.35 and 0.35 for groups 1, 2 and 3, respectively; however, Kruskal-Wallis test revealed that there was no statistically significant difference among the results (p>0.05).

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Apical extrusion of root canal filling material during the removal of gutta-percha and resilon

Stomatoloski glasnik Srbije ◽

10.2298/sgs2002091v ◽

2020 ◽

Vol 67 (2) ◽

pp. 91-99

Author(s):

Karolina Vukoje ◽

Ivana Stojsin ◽

Ivana Kantardzic ◽

Ognjenka Jankovic

Keyword(s):

Root Canal ◽

Chronic Infection ◽

Filling Material ◽

Experimental Conditions ◽

Root Canal Filling ◽

Filling Materials ◽

Gutta Percha ◽

Rotary Instruments ◽

Apical Extrusion ◽

Level Of Significance

Introduction. Root canal filling material may be extruded during retreatment through the apical foramen and cause flare-up or chronic infection. The aim of this study was to compare the apical extrusion of gutta-percha and resilon filling materials during retreatment using hand and rotary instruments. Methods. Sixty extracted single-rooted teeth with single, straight canal were selected. Canals were prepared with ProTaper Universal rotary system to a size F2. Two groups (30 teeth in each) were filled with gutta-percha or resilon points, respectively. In both groups teeth were randomly divided into the three subgroups (10 teeth in each), based on the instruments used for retreatment: Hedstrom hand files and two rotary groups- ProTaper and Twisted File instruments. Apical extrusion was detected visually, using a 4-degree scoring system. Mean scores were calculated and analyzed statistically (t-test and ANOVA). The level of significance was set at p < 0.05. Results. Under tested experimental conditions, the type of canal filling material did not have significant effect on the results of apical extrusion during retreatment. Significantly more material was extruded in the resilon group when manual, Hedstrom file was used (1.80 ? 1.13) than rotary ProTaper (0.60 ? 0.70) and Twisted File (0.50 ? 0.71). Conclusions. The use of a rotary technique is recomended to minimize apical extrusion, especially when resilon obturation material is removed during retreatment.

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Microcomputed Tomographic Assessment of the Single Cone Root Canal Fillings Performed by Undergraduate Student, Postgraduate Student and Specialist Endodontist

Journal of Clinical Medicine ◽

10.3390/jcm10051080 ◽

2021 ◽

Vol 10 (5) ◽

pp. 1080

Author(s):

Saulius Drukteinis ◽

Goda Bilvinaite ◽

Paulius Tusas ◽

Hagay Shemesh ◽

Vytaute Peciuliene

Keyword(s):

Undergraduate Student ◽

Root Canal ◽

Postgraduate Student ◽

Micro Computed Tomography ◽

Dominant Type ◽

Significance Level ◽

Isotropic Resolution ◽

Root Canals ◽

Gutta Percha ◽

Single Cone

The present study evaluated the obturation quality of root canals filled with BioRoot RCS sealer and single gutta-percha point by undergraduate student (US), postgraduate student (PS) and endodontist (ED). Twenty-one plastic models of upper premolars were enlarged with HyFlex EDM instruments to a size 40/0.04 taper and randomly divided into three groups (7 teeth/14 canals per group): US, PS and ED. After the obturation of root canals with BioRoot RCS and one HyFlex EDM size 40 gutta-percha point, plastic models were scanned using micro-computed tomography scanner (µCT) SkyScan 1272 at isotropic resolution of 10 µm. The porosity distribution was evaluated separately for the apical, middle and coronal thirds. The Kruskal–Wallis, Mann–Whitney, Friedman and Wilcoxon tests with the significance level set at 5% were used for data analysis. The µCT evaluation revealed open pores being the dominant type of porosity in all experimental groups and root canal thirds, with the highest percentage of pores in the apical third of root canal fillings. The quality and homogeneity of single cone root canals fillings remained similar between the groups in the apical and middle thirds (p > 0.05). Significant differences were observed only in the coronal third (p < 0.05).

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