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Bandéca, Matheus Coelho, Milton C. Kuga, Keren CF Jordão-Basso, Mateus R. Tonetto, Arturo J. Aranda-Garcia, Fernando A. Vázquez-Garcia, Suellen NL Lima e Jardel C. do Carmo Monteiro. "Persistence of Residues after Endodontic Retreatment related to the Obturation Technique and to the Solvent". World Journal of Dentistry 8, n.º 1 (2017): 41–44. http://dx.doi.org/10.5005/jp-journals-10015-1408.
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ABSTRACT Objective To quantify the persistence of residues after endodontic retreatment related to the root canal obturation technique (lateral compaction or single cone) previously performed and the solvent used (xylol or Endosolv-R) in the cervical and root apical segment using digital radiograph. Materials and methods Forty root canals were prepared using the F2 instrument and filled with gutta-percha and AH Plus, 20 canals using #25 point by lateral compaction and the other 20 using F2 point by single cone. The root canals were transversely sectioned, and two segments (cervical and apical) were obtained. Radiographs were taken from the segment in buccolingual and mesiodistal direction, as well as the area that was originally filled with the root canal obturation was measured using ImageJ. After the specimens were set on special devices, the obturations were removed using the rotary system and divided into four groups (n = 10): G1 — lateral compaction and xylol; G2 — lateral compaction and Endosolv-R; G3 — single cone and xylol; and G4 — single cone and Endosolv-R. A new radiograph was taken and the area occupied by residues was measured. The persistence of residues was obtained from the obturation remaining in the root canal in percentage. The data were analyzed using Kruskal—Wallis test (p = 0.05). Results There was no difference among the examined groups, regardless of the radicular segment or the radiograph direction (p > 0.05). Conclusion The endodontic retreatment using xylol or Endosolv-R in the obturations previously performed by lateral compaction or single cone technique presented similar persistence of residues in the root canal, regardless of the radicular segment. How to cite this article Aranda-Garcia AJ, Kuga MC, Vázquez-Garcia FA, Tonetto MR, Bandeca MC, Lima SNL, Freitas J, Borges AH, Jordão-Basso KCF, do Carmo Monteiro JC. Persistence of Residues after Endodontic Retreatment related to the Obturation Technique and to the Solvent. World J Dent 2017;8(1):41-44.
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Mustaffa, Musliana, Hajar Ar Rahmah Nasri, Insyirah Kamarulzaman e Mohamad Shafiq Mohd Ibrahim. "GuttaFlow Bioseal as Monocone Obturation Technique in Curved Root Canals: A Scanning Electron Microscopy Study". Science Letters 15, n.º 2 (15 de junho de 2021): 42–59. http://dx.doi.org/10.24191/sl.v15i2.13824.
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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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Abbasi, Hira, Abhishek Lal, Rizwan Jouhar e Muhammad Saqib. "Obturation of A Mandibular 2nd Molar with the Help of Ultrasonic Irrigation to Clean the Lateral Canal". Journal of Bahria University Medical and Dental College 11, n.º 02 (5 de abril de 2021): 93–95. http://dx.doi.org/10.51985/zlcd4512.
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Apex of root is of great interest for endodontists mainly because of different stages involved in its development and the surrounding tissues. Mandibular molars normally consists of 2 roots, one mesial and one distal. About common occurrence, 2 canals are found in mesial root and 1 canal in the distal root. The patient was diagnosed with symptomatic irreversible pulpitis. After cleaning and shaping, the next step is obturation. Lateral canals are complex findings in the apical third of root which is characterized as a lateral canal deviating from the main canal. Normally, this lateral canal is not part of the standard root canal procedure due to the complexities, but sometimes obturation might be possible, which might affect the long-term prognosis of the tooth. Advanced skills are required to attempt and complete obturation of the lateral canal which might be a difficult task for the general practitioners.
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Nagaraja, Sundahnath. "Quality of Root Canal Obturation Performed by Senior Undergraduate Dental Students". International Journal of Public Health Science (IJPHS) 4, n.º 3 (1 de setembro de 2015): 197. http://dx.doi.org/10.11591/ijphs.v4i3.4733.
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The aim of the present study was to assess the quality of canal obturation performed by undergraduate denal students at Saveetha Dental College and Hospitals, Chennai. Records of 200 endodontically treated teeth from patients who were visited by undergraduate students between month of November 2014 to May 2015. Periapical radiographs of all treated teeth were assessed in terms of canal obturation quality (adequate density and length). Forty-five percent of teeth fulfilled the criteria of an acceptable root canal obturation. Adequate length and density of root filling was found in 89% and 34% of teeth, respectively. There was a significant difference between maxillary and mandibular teeth regarding the length of root canal obturation. A significant difference was observed between molars and other tooth types. The frequency of root canals with an acceptable filling was significantly greater in the anterior teeth compared to premolars or molars. The technical quality of root canal treatment performed by undergraduate dental students was found to be less than ideal.
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Nagaraja, Sundahnath. "Quality of Root Canal Obturation Performed by Senior Undergraduate Dental Students". International Journal of Public Health Science (IJPHS) 4, n.º 3 (1 de setembro de 2015): 197. http://dx.doi.org/10.11591/.v4i3.4733.
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The aim of the present study was to assess the quality of canal obturation performed by undergraduate denal students at Saveetha Dental College and Hospitals, Chennai. Records of 200 endodontically treated teeth from patients who were visited by undergraduate students between month of November 2014 to May 2015. Periapical radiographs of all treated teeth were assessed in terms of canal obturation quality (adequate density and length). Forty-five percent of teeth fulfilled the criteria of an acceptable root canal obturation. Adequate length and density of root filling was found in 89% and 34% of teeth, respectively. There was a significant difference between maxillary and mandibular teeth regarding the length of root canal obturation. A significant difference was observed between molars and other tooth types. The frequency of root canals with an acceptable filling was significantly greater in the anterior teeth compared to premolars or molars. The technical quality of root canal treatment performed by undergraduate dental students was found to be less than ideal.
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Ahsana Asif e Subramanian EMG. "Obturation Techniques in Primary Teeth". International Journal of Research in Pharmaceutical Sciences 11, n.º 4 (30 de setembro de 2020): 5956–59. http://dx.doi.org/10.26452/ijrps.v11i4.3254.
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Dental caries is a global concern affecting children and adults. A pulpectomy is considered to be the treatment of choice to preserve the pulpally involved primary teeth. Among the various factors determining the clinical success of pulpectomy, proper obturation of the root canals plays an important role. Different obturation materials are being used for the obturation of the primary teeth root canal, which includes zinc oxide eugenol, calcium hydroxide, calcium hydroxide iodoform paste and combinations. These materials are available in different forms such as powder, powder and liquid, paste forms. Various techniques are available to introduce the obturation materials into the root canal systems. These techniques have been tried to create a three-dimensional fluid-tight seal of the root canals. This review article aims to highlight the different techniques that are being used for the obturation of primary teeth. Each technique has its advantages and disadvantages. Creation of voids within the obturation, underfilling or overfilling are the common problems that can be encountered during root canal obturation. These factors can compromise the clinical and radiographic success of pulpectomy treatment. With the current evidence, no definitive conclusions can be made to decide which is the best obturation technique in terms of clinical and radiographic success. The choice of technique selection depends on the clinician’s preference, cost-effectiveness, time consumption, ease of handling.
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Capík, I., e S. Štvrtina. "Comparison of Gutta-Percha Obturation Techniques in the Treatment of Wide Root Canals in Dogs". Acta Veterinaria Brno 77, n.º 2 (2008): 291–96. http://dx.doi.org/10.2754/avb200877020291.
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An in vitro study was conducted to compare gutta-percha obturation techniques of the developing incisors in dogs. Two perpendicular radiographic views were used for evaluation of apical and overall appearance of root canal obturation. Apical leakage technique was used to evaluate ability of each method to provide adequate apical obturation. The endodontic technique utilizing warm vertical condensation with chemically softened guttapercha in the apical region provided the best radiographic appearance without apical dye leakage. The same vertical obturation technique without the use of chemically softened gutta-percha in the apical region showed 33% dye leakage incidence. Lateral obturation techniques provided the least qualitative radiographic appearance to the endodontic fill and dye leakage incidence. Results of evaluation of quality of apical obturation of root canals based on X-ray examination and apical dye leakage resulted in the following conclusions: lateral obturation techniques used in this study have their limitations resulting from typical root canal anatomy; vertical obturation techniques showed better hermetic apical sealing, mainly in the case of vertical condensation of the chemically softened gutta-percha in the apical part of the root canal.
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Maniglia-Ferreira, Claudio, Fabio de Almeida Gomes e Bruno Carvalho Sousa. "Management of Six Root Canals in Mandibular First Molar". Case Reports in Medicine 2015 (2015): 1–5. http://dx.doi.org/10.1155/2015/827070.
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Success in root canal treatment is achieved after thorough cleaning, shaping, and obturation of the root canal system. This clinical case describes conventional root canal treatment of an unusual mandibular first molar with six root canals. The prognosis for endodontic treatment in teeth with abnormal morphology is unfavorable if the clinician fails to recognize extra root canals.
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Carlos, Roopak Bose, Suman Makam, Vamsi Kalyan Yaragonda, H. Murali, Anukriti Tyagi e Rajani Rose. "A Comparative in vitro Evaluation of Vertical Root Fracture Resistance of Endodontically Treated Teeth using Different Obturating Materials". World Journal of Dentistry 5, n.º 2 (2014): 113–17. http://dx.doi.org/10.5005/jp-journals-10015-1270.
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ABSTRACT Aim To compare the vertical root fracture resistance of endodontically treated teeth obturated using different obturating materials. Materials and methods Decoronated roots of 75 single canal lower second premolar teeth were divided randomly into 5 groups. The first group (Group I) served as a negative control. The remaining four Groups were cleaned and shaped using ProTaper Endodontic rotary files and obturated with guttapercha + TubliSeal EWT sealer (Group II), ThermaFil + AH Plus sealer (Group III), RealSeal + RealSeal sealer (Group IV) and GuttaFlow obturating system (Group V). The roots were then embedded in acrylic resin blocks and subjected to vertical load until fracture with a spreader in a universal testing machine and the forces were recorded. Results Fracture resistance of group I > group IV > group V > group III > group II, which were statistically significant. Conclusion Obturation of roots with resin based obturation material—RealSeal had increased VRF resistance compared to the gutta-percha obturation systems. Clinical significance Obturation of the root canals with resin based obturation system—Resilon reinforces the fracture resistance of endodontically treated teeth and contributes to the overall success of the endodontic treatment. How to cite this article Carlos RB, Makam S, Yaragonda VK, Murali H, Tyagi A, Rose R. A Comparative in vitro Evaluation of Vertical Root Fracture Resistance of Endodontically Treated Teeth using Different Obturating Materials. World J Dent 2014;5(2):113-117. Acronyms and abbreviations VRF: Vertical root fracture; ANOVA: Analysis of variance.
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Mitic, Aleksandar, Nadica Mitic e Goran Tosic. "Apical leakage of root canal system obturation materials". Serbian Dental Journal 52, n.º 2 (2005): 90–96. http://dx.doi.org/10.2298/sgs0502090m.
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Hermetical obturation on dentine-cement junction is one of the conditions for success in endodontic treatment. The aim of this paper was to evaluate apical obturation of three different root canal obturation materials. Methods consisted of in vitro semiquantitatively measured penetration of colored solutions. Total number of 55 single-canal teeth was used and obturation test materials were AH-plus, Ketac-Endo and Endomethasone. Linear color penetration was evaluated following illumination of teeth in 2% sol. Metylsalicilate. Results obtained have shown better adhesion between sealer and root canal walls, i.e. better apical obturation when AH-plus (0.25mm) and Ketac-Endo (0.52mm) were used and highest rate of apical leakage when Endomethasone was used (2.35mm). None of the tested obturation materials have sealed apical portion completely.
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Apostolska, Sonja, Elizabeta Gjorgievska, Vasilka Rendzova, Marina Eftimoska, Rade Zivkovic e Ivica Stancic. "Adaptability of different canal sealers to the root canal dentin - scanning electron microscopy analysis". Medical review 70, n.º 5-6 (2017): 141–45. http://dx.doi.org/10.2298/mpns1706141a.
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Introduction. The aim of this in vitro study was to test and analyze the sealing ability of three endodontic materials used for permanent obturation, in between the dentin walls and the gutta-percha points, using a scanning electron microscope. Material and Methods. Forty-five recently extracted single-root teeth, treated by a step-back technique, were divided into three groups (15 teeth in each); the canals were filled with three different permanent obturation materi?als: N2 - zinc oxide root canal cement, Gutta Flow (Coltene), and Endomethasone N (Septodont). Their sealing ability and adhesive properties were analyzed using field emission gun scanning electron microscope, at the time when they were applied between the dentin walls of the canal and the gutta-percha. Results. The results of the scanning electron microscope analysis have shown that all the three sealers have good adhesion properties when used over the root canal walls in the apical third. Good adaptation of the filling used for the root canal walls in the middle and the cervical third was found only in teeth obturated using Gutta Flow, while samples obturated by N2 - zinc oxide root canal cement and Endomethasone showed the weak?est adhesion, and greatest number of cracks between the sealer and the canal wall. Conclusion. When using a single-cone obturation technique, compared to other obturation materials, Gutta Flow shows considerably better adaptation to the root canal wall and the gutta-percha points in the apical, middle, and the cervical third of the root.
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Ring, Jamie, Peter E. Murray, Kenneth N. Namerow, B. Ivan Moldauer e Franklin Garcia-Godoy. "Removing Root Canal Obturation Materials". Journal of the American Dental Association 140, n.º 6 (junho de 2009): 680–88. http://dx.doi.org/10.14219/jada.archive.2009.0254.
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Lakshmi Lakshmanan, Subramanian EMG, Ganesh Jeevanandan e Mebin George Mathew. "A Cross-Sectional Study on the Preference of Root Canal Sealers Among Pediatric Dentists For Obturating Permanent Teeth". International Journal of Research in Pharmaceutical Sciences 11, SPL4 (20 de dezembro de 2020): 226–32. http://dx.doi.org/10.26452/ijrps.v11ispl4.3775.
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Utilisation of root canal sealers to perform obturation procedures is an endorsed method in endodontics and has an indispensable role in the success of treatment. The objective of this study was to explore the pediatric dentists’ preference for root canal sealers for obturating permanent teeth. 360 permanent teeth with gutta-percha obturation done by pediatric dentists were analyzed for the study. The variety of root canal sealers that are utilised for obturating the permanent teeth by pediatric dentists were assessed. The data were obtained from a patient management software. Chi-square test was performed. Out of the 360 permanent teeth, 186 teeth were obturated using resin-based sealers, 101 teeth using zinc oxide eugenol-based sealers and 73 teeth were obturated using calcium hydroxide-based sealers, with statistically significant difference between the three materials (P<0.05). Based on the findings of the present study, resin sealers followed by zinc oxide eugenol sealers and calcium hydroxide sealers were more preferred by pediatric dentists for root canal therapy in permanent teeth.
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Orhan, Ayse I., e Esra C. Tatli. "Evaluation of Root Canal Obturation Quality in Deciduous Molars with Different Obturation Materials: An In Vitro Micro-Computed Tomography Study". BioMed Research International 2021 (2 de julho de 2021): 1–6. http://dx.doi.org/10.1155/2021/6567161.
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Objective. To evaluate the voids in root canal treatment of deciduous molar canals using three obturating materials and two obturation systems using micro-CT. Study Design. Thirty freshly extracted deciduous molars were used in this study. The specimens were instrumented using a ProTaper Universal rotary instrument and randomly assigned into six groups ( n = 5 ). Mesiobuccal root canals were obturated using Ca(OH)2 and iodoform-Ca(OH)2 and ZOE cement. The materials were applied straight from the syringe up to the 2 mm coronal level of the apex. Subsequently, the Lentulo spiral and ultrasonic activation with endoactivator were used for obturation. All samples were scanned by micro-CT with 9.1 μm isotropic voxel resolution. The voids in cross-sectional images and 3D volumes of voids were measured. Differences among materials were statically evaluated ( p < 0.05 ). Results. All study groups showed voids. Ca(OH)2 and iodoform-Ca(OH)2 with ultrasonic activation produced fewer voids whereas the ZOE groups showed higher voids with statistical significance ( p < 0.05 ). Conclusions. Ca(OH)2 and iodoform-Ca(OH)2 with ultrasonic activation decrease void formation. Further studies should be done with other obturation techniques and materials for deciduous tooth root canal management.
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Maniglia-Ferreira, C., Fábio de Almeida-Gomesa, Bruno Carvalho de Sousa, Carla Cabral dos Santos Acioli Lins e Roberto Alves dos Santos. "A Case of Unusual Anatomy in Second Mandibular Molar with Four Canals". European Journal of Dentistry 02, n.º 03 (julho de 2008): 217–19. http://dx.doi.org/10.1055/s-0039-1697382.
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ABSTRACTSuccess in root canal treatment is achieved after thought cleaning and shaping followed by the complete obturation of root canal system. Such treatment may be performed in root canal systems that do not comply with the normal anatomical features described in standard textbooks. This article describes the conventional root canal treatment on an unusual mandibular second molar with four root-canals. (Eur J Dent 2008;2:217-219)
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Shenoy, Vanitha U., e M. V. Sumanthini. "Resilon-Epiphany Obturation System". Journal of Contemporary Dentistry 1, n.º 1 (2011): 30–32. http://dx.doi.org/10.5005/jcd-1-1-30.
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Abstract For over hundred years Gutta Percha (GP) has been the most common material used for the obturation of the root canal. GP was the standard with which newer materials were tested. GP fulfills all the characteristics of an ideal root canal filling material, but has a disadvantage of not being able to seal the root canal on its own and requires a sealer for providing an effective seal. In an attempt to overcome this draw back a new root canal filling material was introduced, called, Resilon which is a thermoplastic synthetic polymer-based root canal filling material and Epiphany being the sealer. This material has the ability of forming a Monoblock with the root canal. The properties of this material has been studied, it has shown promising results and has emerged as a alternative to GP.
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Sachdeva, Jyoti, Anurag Sarin, Ajai Gupta e Shobhit Sachdeva. "Effect of Different Obturation Techniques on the Prognosis of Endodontic Therapy: A Retrospective Comparative Analysis". Journal of Contemporary Dental Practice 17, n.º 7 (2016): 582–86. http://dx.doi.org/10.5005/jp-journals-10024-1893.
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ABSTRACT Introduction Success of root canal therapy (RCT) is largely dependent upon the quality of biomechanical preparation and obturation of the pulp canal. Improperly cleaned or shaped root canal, regardless of the type of obturation method and obturating material, cannot lead to the success of endodontic therapy. Hence, we conducted a clinical comparative analysis of two obturating techniques. Materials and methods A total of 140 patients receiving RCT at the department of Endodontic were included in the present study. The average follow-up time for the patients was 29 months (18–38 months). Patients were grouped into two depending on the type of obturating technique used. Evaluation of the clinical and radiographic follow-up records of the patients was done and analysis was made. One-way analysis of variance (ANOVA) was used for assessing the level of significance. Results The average age of the patients undergoing obturation with carrier-based obturation (CO) technique and lateral compaction (LC) technique was 43 and 48 years respectively. While comparing failure and success of the teeth at the time of follow-up, nonsignificant results were obtained. Significant difference was seen, while comparing the presence of voids and type of teeth in which endodontic therapy was performed using different obturating techniques. Conclusion Endodontic therapy done with LC obturating technique or with CO technique shows prognostic difference on the outcome or quality of treatment therapy. Clinical significance Quality of obturation is more important rather than type while performing endodontic therapy for better prognosis. How to cite this article Sarin A, Gupta P, Sachdeva J, Gupta A, Sachdeva S, Nagpal R. Effect of Different Obturation Techniques on the Prognosis of Endodontic Therapy: A Retrospective Comparative Analysis. J Contemp Dent Pract 2016;17(7):582-586.
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Swathi U B, Sindhu Ramesh e Delphine Priscilla Antony. "Comparative analysis of various obturation techniques in mandibular molars: A retrospective clinical outcome study". International Journal of Research in Pharmaceutical Sciences 11, SPL3 (9 de setembro de 2020): 172–78. http://dx.doi.org/10.26452/ijrps.v11ispl3.2909.
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The primary objective of root canal treatment is the ability to remove irritants, to clean, shape and fill the root canal system three-dimensionally and prevent recontamination from bacterial irritants. Various Obturation techniques used for filling the root canals include lateral condensation, vertical compression, and thermoplastic gutta-percha techniques. The retrospective study aimed to evaluate the various obturation techniques used in mandibular molars. For this retrospective study data collection was based on patient records of Saveetha Dental College, Chennai and consisted of a total of 1903 cases evaluated based on the obturation technique within the time frame of 10th June 2019 to 1st March 2020. In this study, the obturation technique was evaluated based on the patients age, gender, procedure and based on the tooth in which obturation was done. Inclusion criteria consisted of the tooth that underwent endodontic treatment in patients within the age group of 18 to 60 yrs, a tooth with irreversible pulpal disease or chronic apical periodontitis, permanent tooth and mandibular molars. Exclusion criteria consisted of patients above 60 years, primary tooth, teeth in which root canal treatment was not undertaken, teeth with the presence of huge periapical lesions, severely calcified canals etc., severe periodontal disease, teeth apart from mandibular molars. All the values were then statistically analysed. In this study, 1930 patients (848 are females, and 1055 were males with a mean age of 24 years) were included. It was observed in this retrospective study that there was a significant difference between the various types of obturation technique used in mandibular molars. Matched single cone obturation technique was the preferred technique of obturation in the majority of the cases (62.4%). Single cone obturation technique has advantages over other techniques of obturation due to the fewer stress forces implied apically, thereby preventing an excess of sealer extrusion.
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Zivkovic, Slavoljub, Tatjana Brkanic, Dragoslav Dacic, Vanja Opacic, Violeta Pavlovic e Milica Medojevic. "Smear layer in endodontics". Serbian Dental Journal 52, n.º 1 (2005): 7–19. http://dx.doi.org/10.2298/sgs0501007z.
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Modern methods of root canal cleaning and filing are causing formation of the smear layer on treated surfaces. The aim of this paper was to review clinical aspect of smear layer in endodontics. Smear layer is the consequence of instrumentation of root canal walls and is consisted of organic and inorganic particles of cut dentine, necrotic and/or vital pulp fragments, microorganisms and their products. Existence of smear layer is affecting permeability of the radicular dentine, thus decreasing effects of canal medicaments and impairing adhesion of obturation materials in root canal. Removal of the smear layer from canal walls is possible with use of various chemical agents, ultrasonic or laser techniques. Regardless to contradictory attitudes and opinions, removing the smear layer is required for possible bacterial contamination, compromised effects of root canal medication and in order to obtain better obturation of canals 'system. .
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Ajith, Rakhi, Noushad M. C, Jamsheed E. T e Muhammad Askar. "A case series of unusual root canal morphology". Journal of Research in Dentistry 4, n.º 2 (10 de outubro de 2016): 37. http://dx.doi.org/10.19177/jrd.v4e2201637-40.
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Aim: The thorough knowledge of tooth morphology and its variations is essential for successful endodontic treatment.Case report: This article reports an unusual root canal configuration that was detected in a maxillary central incisor with two root canals , mandibular canine with two canals and mandibular canine with two roots and root canals.Conclusions: These case reports increase the awareness of clinicians on variations in the root canal anatomy so that complete disinfection and obturation of the root canal system is possible.
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Molyvdas, Ioannis, Anna Digka e Georgios Mikrogeorgis. "Root Canal Treatment of Mandibular Second Premolars with Three Root Canals-Report of Four Rare Cases". Balkan Journal of Dental Medicine 24, n.º 1 (1 de março de 2020): 49–52. http://dx.doi.org/10.2478/bjdm-2020-0008.
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SummaryBackground/Aim: The aim of root canal treatment is the thorough cleaning, shaping and obturation of the root canals. Variations in root canal anatomy increase the difficulty of the root canal treatment and therefore the possibility of failure. The mandibular premolars often present complex anatomy and the existence of mandibular second premolars with three root canals is very scarce. This report presents the successful endodontic management of four mandibular second premolars with three root canals.Cases Report: In all cases working length was estimated using the working length radiograph and an apex locator. Canal orifices were enlarged with Gates-Glidden drills and manual instrumentation performed with Stainless Steel reamers and Hedstroem files, using either step-back or crown-down technique. Sodium hypochlorite (NaOCl) 2.5% was used as an irrigant. Root canal obturation were then performed using the cold lateral condensation technique with gutta-percha points and Roth’s 801 canal sealer. The cases were scheduled for clinical and radiographic follow-up examination. Clinically in all follow-up examinations the teeth were asymptomatic. For the three cases with periapical lesions, post treatment radiographs, demonstrated periapical healing. Additionally, in the case without periapical lesion, the 9 months recall radiograph revealed healthy periapical conditions.Conclusions: Mandibular premolars should never be underestimated and the clinician should always be alerted for anatomic variations.
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Yengopal, Veerasamy. "What’s new for the clinician? - Excerpts from and summaries of recently published papers". South African Dental Journal 76, n.º 2 (31 de março de 2021): 96–99. http://dx.doi.org/10.17159/2519-0105/2021/v76no2a6.
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Choosing an endodontic sealer clinical use is a decision that contributes to the long-term success of non-surgical root canal treatment. Sealers are used as a thin tacky paste which function as a lubricant and luting agent during obturation, allowing the core obturation material, such as gutta-percha points or other rigid materials, to slide in and become fixed in the canal. Sealers can fill voids, lateral canals, and accessory canals where core obturation materials cannot infiltrate. If the sealer does not perform its function, microleakage may cause root canal failure via clinically undetectable passage of bacteria, fluids, molecules or ions between the tooth and restorative material. It has been reported that extrusion of the sealer during root canal filling has cytotoxic effects on periapical tissues, causing periapical inflammation, necrosis and pain. Endodontic sealers are categorized by composition based on setting reaction and composition: zinc oxide eugenol, salicylate, fatty acid, glass ionomer, silicone, epoxy resin, tricalcium silicate, and methacrylate resin sealer systems. Aslan & Özkan (2021) reported on a trial that sought to evaluate the effect of two calcium silicate-based root canal sealers, Endoseal MTA and EndoSequence BC Sealer, on postoperative pain following single-visit root canal treatment on molar teeth compared to their epoxy/ amine resin-based counterpart AH Plus. The null hypotheses tested in this study were as follows:1. The type of sealer used would not change the incidence and the intensity of post-treatment endodontic pain2. The analgesic intake of patients following single-visit root canal treatment
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Nazar, Faisal, Aparna Raj, K. Radhakrishnan Nair, Rinsu N. Alexander e Meenu M. Kumar. "Management of Endodontic Failure". Conservative Dentistry and Endodontic Journal 2, n.º 2 (2017): 60–64. http://dx.doi.org/10.5005/jp-journals-10048-0029.
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ABSTRACT There are several reasons for a root canal therapy to be unsuccessful. One of the causes for endodontic failure is instrument separation. As a consequence of fracture, access to the apical portion of the root canal is obstructed, leading to improper disinfection. The retrieval of separated instrument followed by obturation to the working length is the treatment option. Many factors can make retrieval difficult. In such cases, management can be done even by bypassing the separated instrument. Another factor for endodontic failure is underobturation. It may be due to block or ledge in the apical third of the canal. Proper instrumentation with frequent confirmation of apical patency during instrumentation can prevent formation of ledge. The inability to treat all the canals is the other cause leading to endodontic failure. Bacteria residing in these canals lead to the persistence of symptoms. Proper evaluation of the radiograph with proper deroofing can prevent chances for missed canals. Combination of all these factors can make retreatment difficult. This case report discusses two endodontic failure cases. In the first case, a premolar tooth with separated instrument and incomplete obturation was treated by retrieval of separated instrument and the obturation of both canals to working length was done. The second one was a molar tooth which had a missed canal, a separated instrument, and an incomplete obturation. Missed canal was negotiated and the fractured instrument was bypassed and root canal was obturated. How to cite this article Kumar MM, Nair KR, Geetha P, Nazar F, Alexander RN, Raj A. Management of Endodontic Failure. Cons Dent Endod J 2017;2(2):60-64.
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Chalil, Noushad Matavan, Shravan Kini, Sunil Jose, Arun Narayanan, Shahnas Salahudeen e Faizal C. Peedikayil. "Endodontic Treatment of a Mandibular Second Premolar with Type IV Wiene’s Root Canal: A Case Report". Case Reports in Dentistry 2014 (2014): 1–3. http://dx.doi.org/10.1155/2014/731467.
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This case report describes an endodontic treatment of a mandibular second premolar with type IV root canal. A 26-year-old male patient reported pain in right mandibular second premolar. Clinical examination showed a large carious lesion with pulp exposure. Radiographs showed minimal periapical changes and slight widening of periodontal ligament space. Mandibular second premolars usually have one canal. The mandibular second premolar may present large number of anatomic variations. The clinician should be aware of the configuration of the pulp system. This case presents the diagnosis and clinical management of a mandibular second premolar with two distinct canals in the apical third of root (Type IV Wiene’s canal configuration), drawing particular attention to tactile examination of all the canal walls and obturating it with calamus 3D obturation system.
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Timme, Maximilian, Max Masthoff, Nina Nagelmann, Malte Masthoff, Cornelius Faber e Sebastian Bürklein. "Imaging of root canal treatment using ultra high field 9.4T UTE-MRI – a preliminary study". Dentomaxillofacial Radiology 49, n.º 1 (janeiro de 2020): 20190183. http://dx.doi.org/10.1259/dmfr.20190183.
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Objectives: To investigate the potential of 9.4T ultrashort echo time (UTE) technology visualizing tooth anatomy and root canal treatment in vitro. In particular, it was evaluated whether the currently achievable resolution is suited presenting all anatomical structures and whether the root canal filling materials are distinguishable in UTE-MRI. Methods: Four extracted human teeth were examined using 9.4T UTE-MRI prior endodontic treatment (native teeth), after preparation and after obturation procedure. Root canal obturation was performed using warm vertical compaction (Schilder technique) with an epoxy-resin-based sealer. A single gutta-percha cone measured by MRI served as intensity-reference. MRI results were validated with corresponding histologic sections of the teeth. In addition, all teeth were examined at the different stages with CBCT and conventional X-ray. Results: 9.4T UTE-MRI enabled a precise visualization of root canal anatomy of all teeth at a resolution of 66 µm. After obturation, dentin, sealer and gutta-percha cones showed distinct MRI signal changes that allowed clear differentiation of the obturation materials from surrounding tooth structure. The filling materials, isthmal root canal connections and even dentin-cracks that were identified in the MR-images could be verified in histological sections. Conclusions: 9.4T UTE-MRI is suitable for visualization of root canal anatomy, the evaluation of root canal preparation and obturation with a high spatial resolution and may provide a versatile tool for dental material research in endodontics.
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Kratchman, Samuel I. "Obturation of the root canal system". Dental Clinics of North America 48, n.º 1 (janeiro de 2004): 203–15. http://dx.doi.org/10.1016/j.cden.2003.12.004.
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Pameijer, Cornelis H., e Osvaldo Zmener. "Resin Materials for Root Canal Obturation". Dental Clinics of North America 54, n.º 2 (abril de 2010): 325–44. http://dx.doi.org/10.1016/j.cden.2009.12.004.
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Ţuculină, Mihaela Jana, Lelia Gheorghiţă, Oana Andreea Diaconu, Marilena Bătăiosu, Ionela Teodora Dascălu, Sanda Mihaela Popescu, Horia Octavian Manolea e Monica Scrieciu. "Comparative Study Regarding Two Obturation Methods with Thermoplasticized Gutta-Percha for the Root Canals". Key Engineering Materials 695 (maio de 2016): 12–19. http://dx.doi.org/10.4028/www.scientific.net/kem.695.12.
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AIM: This study draws a comparison, through the transparentization method, focusing on the quality of the canal obturation made with thermoplasticized gutta-percha, between two different systems: GuttaMaster VDW (München, Germany), based on obturators made of a plastic core, covered in alpha gutta-percha, and a system of vertical warm condensation.MATERIALS AND METHODS: The study focused on twenty teeth extracted for various reasons which underwent the endodontic treatment realized through a hybrid technique, using the rotary files system of NiTi MTWO (VDW, München, Germany), and the manual files k-file type (Kendo, VDW, München, Germany). The teeth were distributed into two groups of ten. The teeth in the first group underwent obturation using the CWC technique of vertical warm obturation, and the teeth in the second group underwent root obturation using the GuttaMaster system (VDW, München, Germany). The teeth were decalcified in nitric acid. Using the method of transparentization with methyl salicylate, there were emphasized aspects regarding the abilities of each method to seal three-dimensionally the endodontic space.RESULTS: The teeth which underwent vertical obturation presented many more holes in the obturation material, holes situated mainly in the medial and coronary third. However, these teeth presented the highest degree of insertion in the lateral canals, as compared to the other obturation technique employed. The homogeneity of the root obturation had not had any statistical significant differences between the two techniques. However, the technique of injecting thermoplasticized gutta-percha was superior to the other one regarding the tightness on the edge and the degree of penetration in the lateral canals.CONCLUSIONS: The knowledge of both the qualities and the limits of the obturation material chosen, as well as the correctness of performing the two techniques, determines a definite improvement of the quality of the canal treatment, which ends with a three-dimensional canal obturation.
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Singh Raju, Rajender, Panna Mangat, Saleem Azhar e Sana. "C-Shaped canal system - A Case report". UNIVERSITY JOURNAL OF DENTAL SCIENCES 6, n.º 2 (28 de agosto de 2020): 83–85. http://dx.doi.org/10.21276/ujds.2020.6.2.12.
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ABSTRACT
C-shaped canals are anatomic variants in root canal morphology. This c-shaped configuration should be diagnosed earliest as it influences the management of such cases more efficiently. They pose challenges in shaping, cleaning and obturating protocols. We require a file system which can contact and shape all possible surfaces of the c-shaped canal. Some of these file systems are XP-endo shaper files (FKG), SAF (ReDent NOVA). For cleaning, advocated systems are XP- endo finisher files (FKG), SAF, ultrasonic files like irrisafe, sonic files (endo-activator), endo-vac system. 3-D obturation should be done wih downpack and backfill technique (warm vertical or continuous wave of compaction)
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Park, Seong Yeon, Mo Kwan Kang, Hae Won Choi e Won-Jun Shon. "Comparative Analysis of Root Canal Filling Debris and Smear Layer Removal Efficacy Using Various Root Canal Activation Systems during Endodontic Retreatment". Medicina 56, n.º 11 (16 de novembro de 2020): 615. http://dx.doi.org/10.3390/medicina56110615.
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Background and objectives: The complete removal of obturation material can be a challenge in nonsurgical root canal retreatment. The insufficient removal of obturation material is a reason for root canal retreatment failure. Materials and Methods: The purpose of this study was to assess the efficacy of different final root canal irrigation activation methods in removing debris and smear layers in the apical and middle portions of root canals during retreatment. Sixty-six distal roots of freshly extracted molars were randomly divided into six groups: (1) primary root canal treatment with no obturation (negative control); (2) retreatment with only conventional instrumentation and irrigation (positive control); (3) retreatment with additional ultrasonic irrigation using the Piezon Master 700; (4) ultrasonic irrigation with the ENDOSONIC Blue; (5) sonic irrigation with the EDDY; and (6) multisonic irrigation with the GentleWave system. Roots were split and prepared for scanning electron microscopic (SEM) evaluation. Acquired images were assessed to quantify the amount of debris and smear remaining. Results: Among the treatment groups, Group 6 had a significantly lower debris score than Group 2 (positive control) in both the middle and apical regions (p = 0.004, p = 0.012). All treatment groups showed significantly lower smear scores than Group 2 in the middle and apical regions (p < 0.05). Conclusions: The GentleWave multisonic System showed a more optimal cleaning efficacy of the root canal debris but did not differ significantly with the tested passive ultrasonic or sonic irrigation method.
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Drukteinis, Saulius, Audra Drukteiniene, Lesbia Drukteinis, Luc C. Martens e Sivaprakash Rajasekharan. "Flowable Urethane Dimethacrylate-Based Filler for Root Canal Obturation in Primary Molars: A Pilot SEM and microCT Assessment". Children 8, n.º 2 (20 de janeiro de 2021): 60. http://dx.doi.org/10.3390/children8020060.
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Pulpectomy in deciduous teeth involves endodontic access opening, root canal debridement and obturation with an appropriate filling material. EndoREZ (ER) is the urethane dimethacrylate-based filler, which can be used for root canal obturation in permanent and primary teeth. This observation aimed to evaluate the behavior of the ER as a filler in root canals of two primary molars after the physiological resorption process using the scanning electron microscopy (SEM) and micro-computed tomography (µCT) in second lower molars after their natural exfoliation. The SEM analysis revealed a non-uniform, porous and lacunary structure of ER, visually similar to the resorbed surface of the dentine. The µCT observations demonstrated the differences in the resorption level of the root and material surfaces. The preliminary observations suggest that ER is resorbed faster than root tissues and can therefore be a suitable material for the root canal filling in primary teeth. However, more investigations are needed to support these preliminary findings.
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Jabali, Ahmad H. "Middle Mesial and Middle Distal Canals in Mandibular First Molar". Journal of Contemporary Dental Practice 19, n.º 2 (2018): 233–36. http://dx.doi.org/10.5005/jp-journals-10024-2242.
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ABSTRACT Background Root canal anatomy is a complex entity. The main objective of root canal treatment is to get rid of the infection and have a good apical and coronal seal with an appropriate filling. Inability to achieve thorough cleaning and shaping followed by three-dimensional obturation of the root canal system usually causes root canal treatment failure. For this reason, clinicians should be aware of these anatomical variations to achieve successful treatment. Aim The aim of this article is to report on the successful treatment and follow-up of mandibular first molar with additional middle mesial (MM) and middle distal (MD) canals. Case report A 29-year-old white male patient reported with a complaint of pain in relation with tooth #19. On clinical examination, diagnosis of symptomatic irreversible pulpitis with symptomatic apical periodontitis and condensing osteitis was made and nonsurgical root canal treatment was planned. Initially, two mesial and two distal canals were located, and the patient was planned for the obturation in the second visit. The complaint of mild persistent symptoms gave a possibility of additional canals. Under the dental operating microscope and selective troughing on the floor of the pulp chamber with ultrasonic tips, additional canals were located as MM and MD canals. Conclusion Leaving some area of the root canal system untreated is found to be one of the main reasons for root canal treatment failure. Dentists should take advantage of new tools, such as dental operating microscope and ultrasonic tips to be able to locate and treat the hidden and unusual anatomy. Clinical significance Mandibular first molar with six canals is very rare to encounter. Clinician should have a thorough knowledge of these unusual anatomy to avoid treatment failure due to incomplete disinfection of the root canal system. Keywords Additional canals, Mandibular first molar, Middle distal, Middle mesial, Root canal morphology. How to cite this article Jabali AH. Middle Mesial and Middle Distal Canals in Mandibular First Molar. J Contemp Dent Pract 2018;19(2):233-236.
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Vikram, Mannu. "C-shaped canal, an endodontic challenge". Health Renaissance 11, n.º 1 (11 de fevereiro de 2013): 89–91. http://dx.doi.org/10.3126/hren.v11i1.7610.
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Recognition of unusual variations in the canal configuration is critical because it has been established that the root with a single tapering canal and apical foramen is the exception rather than the rule. C-shaped canals are anatomic features that present the clinician with both diagnostic and operational challenges. The early recognition of these configurations facilitates cleaning, shaping, and obturation of the root canal system. .C. configuration, which is an important anatomic variation, presents a thin fin connecting the root canals.The C-shaped root canal system is an anatomical variant of the root canal structure in which a continuous slit or web connects individual root canals. These C-shaped canals present a challenge to the clinician, both at the diagnostic and treatment level. Health Renaissance, January-April 2013; Vol. 11 No.1; 89-91 DOI: http://dx.doi.org/10.3126/hren.v11i1.7610
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Mustaffa, Musliana. "The use of bioceramic root canal sealers for obturation of the root canal system: A review". IIUM Journal of Orofacial and Health Sciences 2, n.º 1 (28 de fevereiro de 2021): 14–25. http://dx.doi.org/10.31436/ijohs.v2i1.55.
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The use of bioceramic root canal sealers in endodontics is a promising approach because of the advantages such as improved flow properties, biocompatible and could promote the formation of hard tissue. Due to the recent technology and limited scientific evidence, the effectiveness of bioceramic root canal sealers remains unclear. This article focuses on the physicochemical properties, biocompatibility, biomineralisation, retreatability, 3D obturation and current practice of using bioceramic root canal sealers. The relevant articles for this review were searched manually from Google Scholar and PubMed using keywords ‘bioceramic root filling material AND endodontics’, ‘bioceramic root canal sealers AND endodontics’, ‘cytotoxicity AND bioceramic root canal sealers’, ‘bioceramic root canal sealers AND physicochemical properties’, ‘biomineralisation AND bioceramic root canal sealers’ and ‘retreatment efficacy AND bioceramic root filling materials’. Since the clinical data concerning the obturation with bioceramic root canal sealers is lacking, the selection of materials should be made based on the available scientific evidence, individual cases, material availability and operator’s preference.
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Singh, Pankaj, Shashi Ranjan, Rashmi Issar, Shashank Saurav, Suman Kar e Swarupananda Bera. "Comparison of Fracture Resistance of Two Resin-based Sealers to Root Canal Walls: An In Vitro Study". Journal of Contemporary Dental Practice 21, n.º 11 (2020): 1253–57. http://dx.doi.org/10.5005/jp-journals-10024-2963.
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ABSTRACT Aim and objective In the present study, the prepared roots obturated by gutta-percha/AH plus and Resilon/Epiphany were tested and compared for fracture resistance. The study also does a scanning electron microscope (SEM) evaluation of the adaptability of these obturating materials to root canal walls. Materials and methods One hundred extracted mandibular premolars were decoronated and the dimensions of the roots were standardized. Each root was prepared to a size of #25 with 6% taper. Roots were gauged after preparation and those requiring more preparation were discarded. Seventy-seven prepared roots were finally selected for the study. The samples were then divided into three groups. Group I with 25 specimens was control group in which no obturation was performed, group II with 26 specimens was obturated by gutta-percha/AH plus sealer, and group III with 26 specimens was filled by Resilon/Epiphany. The method for obturation was cold lateral condensation. The samples were then stored at 100% humidity for 2 weeks. One random sample from groups II and III was subjected to SEM analysis. Groups I, II, and III were then subjected to vertical loading in Instron machine. One-way analysis of variance (ANOVA) test and Tukey's multiple comparison test were used for statistical analysis. Results Group III exhibited the maximum fracture resistance as compared to groups I and II. The least mean fracture resistance of 370.05 N was seen in group II and the maximum mean fracture resistance of 481.05 kN was observed in group III. One-way ANOVA and Tukey's multiple comparison test between groups I, II, and III, group III showed a highly significant resistance to fracture as compared to groups I and II (p < 0.0001). Scanning electron microscope microphotographs showed a better adaptation of Resilon/Epiphany as compared to gutta-percha/AH plus to the root canal. Conclusion The Resilon/Epiphany on obturation of root canals creates a monoblock by penetrating inside the dentinal irregularities, which strengthens the root and provides fracture resistance. This fracture resistance was significantly higher in the present study as compared to groups I and II. Clinical significance In the present study, Resilon/Epiphany when used to obturate the prepared canals showed a promising result both in terms of fracture resistance and adaptability to root canal walls. This paves a way for the use of this combination of obturating material not only to strengthen the compromised root strength in clinical scenario but also providing an increased sealing ability which will contribute to the success of root canal treatment. How to cite this article Issar R, Ranjan S, Saurav S, et al. Comparison of Fracture Resistance of Two Resin-based Sealers to Root Canal Walls: An In Vitro Study. J Contemp Dent Pract 2020;21(11):1253–1257.
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Nurhapsari, Arlina. "PENATALAKSANAAN GIGI PREMOLAR KEDUA MAKSILA DENGAN SALURAN AKAR VERTUCCI TIPE V - laporan Kasus". ODONTO : Dental Journal 1, n.º 1 (1 de maio de 2014): 53. http://dx.doi.org/10.30659/odj.1.1.53-56.
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Background: The aim of the case report is to demonstrate the importance of knowing the root canals configuration in the maxillary second premolars. Maxillary second premolars usually have one root canal, however in several cases there is more than one root canal with a variety of configurations. Method: multiple visit root canal treatment with a crown down technique on the maxillary second premolar with unusual root canals configuration which is confirmed using radiograph. Result: Based on radiograph, it was identified Vertucci type V root canal on the maxillary second premolars. After biomechanical preparation, obturation was conducted. When patient controlled, there were not problem and inflammation. Conclusion : This report described and discussed about the possibility of root canals variation on the maxillary second premolars. Careful examination using radiograph and deep knowledge, it is identified by the clinician in treating root canal treatment on that premolars.
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Matovic, Ivan, Nevenka Teodorovic e Marina Marjanovic. "Evaluation of root canal obturation using gas permeability method". Serbian Dental Journal 60, n.º 2 (2013): 63–68. http://dx.doi.org/10.2298/sgs1302063m.
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Introduction. Prognosis of root canal treatment is highly dependent on the quality of endodontic space obturation. The main task of successful root canal treatment is to achieve adequate reparation processes in the apical periodontium. The aim of this study was to evaluate the quality of root canal obturation using the method of gas (argon) penetration through three different endodontic materials. Material and Methods. Thirty recently extracted human single-rooted teeth after root canal instrumentation were divided into three identical groups and obturated with three different endodontic materials: group I - GuttaFlow (RSA, Germany), group II - AH Plus (DeTray, Germany), group III - Acroseal (Septodont, France). The quality of root canal obturation was evaluated using the method of gas permeability. Results. The best results were obtained with GuttaFlow. The average penetration rate of argon was 186.7 seconds. Slightly higher gas porosity had AH Plus, 179.9 seconds, while the highest gas permeability was observed after the application of Acroseal, 178.5 seconds. However, there was no statistically significant difference in gas penetration among these endodontic materials (p>0.05). Conclusion. All three endodontic materials showed gas permeability in a given time interval. The best quality of obturation was achieved with GuttaFlow, while the lowest quality was obtained with Acroseal.
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Teodorovic, Nevenka, e Zeljko Martinovic. "Significance of crown-down root canal preparation technique in endodontic therapy by using the hydroxylapatite sealer". Vojnosanitetski pregled 62, n.º 6 (2005): 447–52. http://dx.doi.org/10.2298/vsp0506447t.
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Aim.To evaluate the crown-down preparation technique, and the use of hydroxylapatite based material for the definitive root canal obturation. Methods. The investigation included 20 single-canal roots with chronic periapical inflammatory lesion. Biomechanical medicamentous canal preparation was done using the double flared technique with balanced force, and the obturation was performed with hydroxylapatite sealer (unicone technique). Clinical and radiographic check-up performed 12 months after the treatment, used the following parameters: pain, swelling, percussion and palpation sensitivity, and the presence of fistula. Results. The obtained results showed a successful treatment in 18 cases, while in the 2 cases the treatment failed. Conclusion. These findings suggested that the crown-down preparation technique efficiently cleaned and shaped the root canal, and that the hydroxylapatite-based material created the homogenous and hermetic root canal obturation, so this methodology could be recommended for the endodontic therapy.
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Debelian, Gilberto. "BioRaCe NiTi system: Biologically desirable apical sizes - safely and efficiently". Serbian Dental Journal 58, n.º 1 (2011): 44–50. http://dx.doi.org/10.2298/sgs1101044d.
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The main goal of endodontic treatment is an effective cleaning and shaping of the root canal in order to eliminate bacteria from the canal system and prevent the occurrence of apical periodontitis. Adequate choice of instruments and preparation techniques significantly reduce the number of bacteria in the canal system prior to obturation. Studies have confirmed that canals instrumented to acceptable apical diameters provide significantly lower number of bacteria even without the use of irrigation. Application of rotary instruments, such as BioRaCe, provides biologi- cally appropriate diameter in the apical portion of the canal and thus a lower number of residual bacteria to ensure safe and effective obturation.
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Pérez-Alfayate, Ruth, Montse Mercade, Juan Algar-Pinilla, Rafael Cisneros-Cabello, Federico Foschi e Stephen Cohen. "Root Canal Filling Quality Comparison of a Premixed Calcium Silicate Endodontic Sealer and Different Carrier-Based Obturation Systems". Journal of Clinical Medicine 10, n.º 6 (18 de março de 2021): 1271. http://dx.doi.org/10.3390/jcm10061271.
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Background: The number of voids within the root canal obturation is a relevant parameter to describe the quality of the technique, as well as to predict long-term prognosis. The aim of this study was to evaluate the quality of root canal obturation in curved root canals filled with Thermafil, GuttaCore, GuttaFusion and lateral compaction with AH Plus and EndoSequence BC sealer, by means of percentage of gutta-percha and sealer filled area. Methods: 200 curved canals of mandibular molars were divided in five groups (n = 40). Each specimen was evaluated at 3, 6 and 9 mm from the apex. A total of 600 samples were analyzed. Obturation was performed with either Thermafil (TH), GuttaCore (GC), GuttaFusion (GF) or lateral compaction (LC), using AH Plus as sealer. In another group EndoSequence BC sealer (BC) was used. Subgroups (n = 20) were made depending on the use of sonic activation during the placement of the sealer. The percentage of total obturation material was analyzed as an indirect measurement of percentage of voids. Results: GF showed a better performance at the apical level, while GC showed the higher percentage of total obturation at the coronal area. No differences were observed for the activation of sealers in any of the groups. Statistical analysis was performed by using two-way ANOVA. Statistical significance was set at CI: 95% (p < 0.05). Conclusions: Sonic activation of sealers did not show any benefit to avoid the presence of voids within obturation of curved canals. Following the manufacturer recommendations, we found that TH did not show benefits when applied to curved canals.
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Matović, Ivan, Dragan V. Ilić, Renata Petrović e Dejan Ostojić. "The application of MTA as apical plug for root canal obturation – in vitro study". Stomatoloski glasnik Srbije 65, n.º 2 (1 de junho de 2018): 71–77. http://dx.doi.org/10.2478/sdj-2018-0007.
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Summary Introduction Prognosis of endodontically treated tooth is directly correlated to the quality of apical obturation. Modern concept of endodontics in particular way points out the quality of apical filling. The aim of this study was to assess the quality of root canal obturation with MTA apical plug using the method of gas (argon) penetration. Material and Methods Sixty-six freshly extracted single rooted (single canal) teeth were divided into the two experimental (30 teeth) and one control group (6). All canals were instrumented using hand and rotary files in step-back technique and copious irrigation of 1%NaOCl. In the first experimental group teeth were obturated using different sealers: Gutta Flow (Roeko), AH Plus (DeTrey), Acroseal (Septodont) and mono gutta-percha cone (10 canals each). In the second experimental group obturation involved 3 mm of MTA-Angelus apical plug while the remaining canal space was filled with the same three sealers as in the first group. The rate of gas permeability by Leak detector-Edwards LD 416 was measured in all teeth. Results The best seal was found in teeth obturated with Gutta Flow and MTA plug with average diffusion rate of 264.4 sec while the worst quality of obturation was found with Acroseal (178.5 sec-the highest gas permeability). All samples with MTA plug exhibited significantly lower leakage than the samples filled without MTA apical plug. Conclusion Root canals filled with MTA apical plug exhibited statistically significant lower gas permeability in comparison to the ones filled with sealer and guttapercha cones only.
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Mahajan, Pardeep, Ruma Grover, Shikha Baghi Bhandari, Prashant Monga e Vanita Keshav. "Management of Mandibular Lateral Incisor with Two Roots: a Case Report". International Journal of Medical and Dental Sciences 5, n.º 1 (17 de janeiro de 2016): 1093. http://dx.doi.org/10.19056/ijmdsjssmes/2016/v5i1/83583.
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Successful outcome of endodontic treatment depends on the identification of all root canals which in turn guarantee complete extirpation of pulp tissue, proper chemo-mechanical cleaning and shaping and three dimensional obturation of the root canal system with an inert filling material. However endodontic treatment can fail for many reasons, such as diagnostic errors, persistence of the infection in the root canal system, errors in debridement and shaping of the root canal systems, instrument fractures, poor restorations and extra roots or canals if not detected are the reasons for failure. Undetected extra roots or root canals have been considered as a major reason for failure of root canal treatment. Many of the challenges faced during root canal treatment may be directly attributed to an inadequate understanding of the canal morphology of teeth. A broad knowledge of both the external and internal anatomy of teeth is of great importance for adequate endodontic treatment. We present a case report of 2 roots in mandibular lateral incisor.
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Nešković, Jelena, Milica Jovanović-Medojević, Đurica Grga, Branka Popovic e Slavoljub Živković. "Microbiological status of root canal after unsuccessful endodontic treatment". Serbian Dental Journal 65, n.º 4 (1 de dezembro de 2018): 195–204. http://dx.doi.org/10.2478/sdj-2018-0019.
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Summary Introduction The main objective of endodontic treatment is to eliminate infection from root canal and prevent reinfection by three-dimensional hermetic obturation of the canal system. Endodontic failure can occur due to inability of complete control and elimination of infection from the root canal. The aim of this study is to investigate, by PCR technique, microbiological status of previously endodontically unsuccessfully treated teeth immediately after the removal of obturation material. Material and Methods The analysis included 30 teeth indicated for endodontic retreatment. After removing previous root canal filling material, the bacteriological sample was taken by sterile instrument (# 15) and paper points. Standard PCR technique was used to analyze the incidence of E.faecalis, P.micros, P.intermedia, P. endodontalis and A.actinomycetemcomitans. Results Positive bacteriological findings were registered in 80% of cases, while bacteria were not identified in 20% of all samples (all taken from the root canals without significant changes in periapical tissue). From 24 canals with identified bacteria, 17 had affected apical periodontium. The most dominant microbe in root canals with positive bacteriological finding was E.faecalis (83.3% of the canals) and P.intermedia (75%). In case of teeth with chronic periapical changes, the most common was E. faecalis (94%) and P.intermedia (82.3%). Conclusion The presence of periapical lesions significantly affects microbiological status of endodontically treated teeth. The presence of bacteria was confirmed in most teeth with periapical lesions, while the most frequently identified bacteria were E. faecalis, P.intermedia and P.micros.
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Луницына, Ю., Y. Lunitsyna, И. Зубова e I. Zubova. "COMPARATIVE EVALUATION OF THE EFFECTIVENESS OF VARIOUS METHODS OF SEALING THE ROOT CANAL". Actual problems in dentistry 11, n.º 2 (25 de abril de 2015): 9–12. http://dx.doi.org/10.18481/2077-7566-2015-0-2-9-12.
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<p><strong>The summary </strong>aim of this study was to compare the quality of root canal obturation teeth depending on the chosen method of machining and filling. To achieve the objectives conducted a laboratory study in which selected 70 extracted teeth with one root canal. The teeth are divided into 7 groups according to used for machining tools, methods of sealing root canal sealer and method of application. Proved highly effective sealing of the root canal using a heated gutta-percha on the media. Mechanical treatment of root canal rotating nickeltitanium instruments, the introduction of sealer using Endodontic files and reamers and application of gutta-percha cone improve the quality of its obturation.</p>
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Agarwal, Kishan, Sheikh Nazia, Samia Ali, Praveen Singh Samant e Jaydip Marvaniya. "Endodontic management of Type-2 and Type-3 C-shaped root canal system in mandibular second molars: A case series". IP Indian Journal of Conservative and Endodontics 6, n.º 2 (15 de junho de 2021): 120–23. http://dx.doi.org/10.18231/j.ijce.2021.027.
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The most common anatomical variation of the root canal system is a C-shaped root canal configuration and exists mostly in mandibular second molars, but may be found also in other teeth. Because of the broad spectrum of canal configurations, management of C-shaped canals is challenging for clinicians in diagnosis, shaping, cleaning and obturation. First case of c-shaped canal was documented in literature by Cooke and Cox in 1979. In this case series, we present the management of C-shaped canal configuration in mandibular second molars.
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Kalantar Motamedi, Mahmood Reza, Amin Mortaheb, Maryam Zare Jahromi e Brett E. Gilbert. "Micro-CT Evaluation of Four Root Canal Obturation Techniques". Scanning 2021 (25 de fevereiro de 2021): 1–7. http://dx.doi.org/10.1155/2021/6632822.
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Purpose. The aim of this in vitro study was to evaluate the quality of four root canal obturation techniques using microcomputed tomography (micro-CT). Materials and Methods. A total of 36 mandibular first premolars with mostly round canals were decoronated, then instrumented up to a size F3 rotary file, and dressed with an epoxy resin-based sealer. Subsequently, they were divided into 4 different groups ( n = 9 ) based on the method of obturation: lateral condensation using 0.02 tapered master cone (LC2), lateral condensation using 0.04 tapered master cone (LC4), matched single-cone technique (MS), and matched single cone-mediated ultrasonic activation (MSUA). All the teeth were scanned using micro-CT (resolution of 19 μm), and the percentage volume of voids was calculated. One-way analysis of variance and Tukey test were used to analyze the data ( α = 0.05 ). Results. The total percentage volume of voids was significantly lower in the MSUA group compared to all other groups ( P < 0.05 ). The total percentage volume of voids was significantly lower in the MS group compared to the LC4 ( P < 0.001 ) and LC2 ( P < 0.001 ) groups. However, there was no significant difference between the LC2 and LC4 groups ( P < 0.65 ). Conclusions. MSUA, significantly, showed the least root canal filling voids amongst all the obturation techniques studied. MSUA can be considered an effective method for the filling of the round root canals. In general, lateral condensation using either 0.02 or 0.04 tapered master cones had significantly the highest volume percentage of voids amongst the experimental groups.
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Ahmed, Syed Adeel, Safia Anwar e Imtiaz ul Haq. "Evaluation of Quality of Root Canal Obturation, Coronal Restoration and Periapical Health in Failed Endodontically Treated Teeth". Journal of Bahria University Medical and Dental College 11, n.º 02 (5 de abril de 2021): 54–59. http://dx.doi.org/10.51985/whtj7349.
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Objective: To investigate the implication of quality of obturation and coronal restoration on periapical tissue in failed endodontically treated teeth. Study Design and Setting: This cross-sectional research was performed in the Operative Department of BUMDC on 187 patients reporting with root canal failure from March 2019 to August 2019. Methodology: Patients of both genders aged between 20-60 years were considered for this study. Single and multirooted teeth indicated for repeated endodontic treatment due to under filled, overfilled obturation, voids in obturation, absence and presence of coronal restoration were included. One operator carried out clinical examination of the teeth and periapical radiograph was taken for each patient by using E-Speed film and evaluated by the same operator using an illuminated viewer box. SPSS 17 for windows software was used for data entering and chi- square test was applied for statistical calculation of the outcomes. Results: Total n=187 endodontic treated failed teeth were evaluated, out of which 52.9% were of females and 47.1% to males. The number of obturations with acceptable length were 81(43.3%), with adequate density were 107 (57.2%) and with consistent taper were 116(62%). Periapical lesion was observed in 118(63.1%) cases. Quality of obturation significantly affects the periapical health. Cross tabulation showed a significant association (p-value <0.000) between inadequate coronal restoration and changes in periapical area. Conclusion: The successful prognosis of the root canal treatment relies on the good quality of obturation and adequate coronal filling.
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Yadav, Anushka, Somendra Saraswat, B. R. Adyanthaya e Meetu Mathur. "Mid Mesial Canal in Mandibular Molars: Two Case Report and A Review of Literature". IRA-International Journal of Applied Sciences (ISSN 2455-4499) 10, n.º 3 (20 de março de 2018): 27. http://dx.doi.org/10.21013/jas.v10.n3.p1.
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<p class="Default">The main objective of root canal treatment is thorough mechanical and chemical cleansing of the entire pulp space followed by complete obturation with an inert filling material. These molars normally have two roots, one mesial and one distal, and their usual canal distribution is two in the mesial root and one or two in the distal root. This clinical case reports and review of literature describes the management of the mandibular molar with three separate mesial canals including middle mesial canal.</p>
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Kurniawaty, Kurniawaty, Christine A. Rovani, Juni J. Nugroho, Nurhayaty Natsir e Indrya K. Mattulada. "Effects of two different sealer material on fiber post bond strength in root canal". Journal of Dentomaxillofacial Science 1, n.º 1 (1 de abril de 2016): 31. http://dx.doi.org/10.15562/jdmfs.v1i1.21.
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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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Carlson, RS. "Sterile Root Canal: Obturation is Not Sterilization". American Journal of Biomedical Science & Research 1, n.º 3 (22 de fevereiro de 2019): 137–39. http://dx.doi.org/10.34297/ajbsr.2019.01.000528.
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