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Baraba A, Rajda M, Baršić G, Jukić Krmek S, Šnjarić D, Miletić I. Efficacy of Shock Wave-Enhanced Emission Photoacoustic Streaming (SWEEPS) in the Removal of Different Combinations of Sealers Used with Two Obturation Techniques: A Micro-CT Study. MATERIALS (BASEL, SWITZERLAND) 2023; 16:3273. [PMID: 37110109 PMCID: PMC10143831 DOI: 10.3390/ma16083273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/16/2023] [Accepted: 04/19/2023] [Indexed: 06/19/2023]
Abstract
This study sought to evaluate the efficacy of SWEEPS in the removal of epoxy-resin-based and calcium-silicate-containing endodontic sealer combined with single-cone and carrier-based obturation techniques through a micro-CT analysis. Seventy-six single-rooted extracted human teeth with single root canal were instrumented with Reciproc instruments. Specimens were randomly divided into four groups (n = 19) according to the root canal filling material and obturation technique: (1) AH Plus sealer + Reciproc gutta-percha, (2) TotalFill BC sealer + TotalFill BC Points, (3) AH Plus sealer + Guttafusion obturator, and (4) MTA Fillapex + Guttafusion obturator. All specimens were re-treated one week later using Reciproc instruments. Following re-treatment, root canals were additionally irrigated using the Auto SWEEPS modality. The differences in the root canal filling remnants were analyzed by micro-CT scanning of each tooth after root canal obturation, after re-treatment, and after additional SWEEPS treatment. Statistical analysis was performed using an analysis of variance (p < 0.05). The additional treatment with SWEEPS significantly reduced the volume of the root canal filling materials in all experimental groups compared to the removal of root canal filling using only reciprocating instruments (p < 0.05). However, the root canal filling was not removed completely from any of the samples. SWEEPS can be used to enhance the removal of both epoxy-resin-based and calcium-silicate-containing sealers, in combination with single-cone and carrier-based obturation techniques.
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Affiliation(s)
- Anja Baraba
- Department of Endodontics and Restorative Dentistry, School of Dental Medicine, University of Zagreb, 10000 Zagreb, Croatia; (A.B.); (S.J.K.)
| | - Marko Rajda
- Dental Polyclinic Zagreb, Perkovčeva ul. 3, 10000 Zagreb, Croatia;
| | - Gorana Baršić
- Department of Quality, Faculty of Mechanical Engineering and Naval Architecture, Ivana Lučića 5, 10002 Zagreb, Croatia;
| | - Silvana Jukić Krmek
- Department of Endodontics and Restorative Dentistry, School of Dental Medicine, University of Zagreb, 10000 Zagreb, Croatia; (A.B.); (S.J.K.)
| | - Damir Šnjarić
- Department of Endodontics and Restorative Dentistry, Faculty of Dental Medicine, University of Rijeka, 51000 Rijeka, Croatia;
| | - Ivana Miletić
- Department of Endodontics and Restorative Dentistry, School of Dental Medicine, University of Zagreb, 10000 Zagreb, Croatia; (A.B.); (S.J.K.)
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Ajina MA, Shah PK, Chong BS. Critical analysis of research methods and experimental models to study removal of root filling materials. Int Endod J 2021; 55 Suppl 1:119-152. [PMID: 34674279 DOI: 10.1111/iej.13650] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 10/14/2021] [Accepted: 10/18/2021] [Indexed: 12/14/2022]
Abstract
Despite enjoying high favourable outcome rates, root canal treatment is not always successful. Root canal retreatment is a widely practised option for managing a non-healing root treated tooth. A basic distinction between retreatment and initial treatment is the requirement to remove the existing root filling material occupying the root canal space. Only then, can the technical deficiencies and possible causes of failure be addressed. Hence, the successful removal of the root filling material is critical to achieving the objectives of retreatment. Many different materials and techniques have been used for root canal filling, which have been documented in a plethora of studies; these are mainly laboratory studies investigating the removal of root filling materials. To help guide future research, which may then better inform clinical practice in relation to retreatment procedures, the focus of this narrative review is on the research methods and experimental models employed to study the removal of root filling materials. The current available literature demonstrates great variation in the research methodologies used to study the removal of root filling material, including direct visualization by splitting tooth samples or clearing, three-dimensional radiographic imaging including using microcomputed tomography or cone-beam computed tomography, and a combination of these techniques. Depending on the research method employed, variation also exists in quantification of root filling material removal; these include measurements of surface area, volume or weight, and criteria-based (semi-quantitative) assessment. Experimental models, using human teeth or resin models, differ with respect to standardization techniques and replication of the clinical scenario including initial sample preparation, canal filling, allocation and technical aspects of retreatment procedures. Future models should replicate, as closely as possible, the clinical scenario. Currently, microcomputed tomography provides a highly detailed, non-invasive and non-destructive method of objectively assessing and quantifying root filling removal.
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Affiliation(s)
- Mahdi A Ajina
- Institute of Dentistry, Barts & The London School of Medicine & Dentistry, Queen Mary University of London, London, UK
| | - Pratik K Shah
- Institute of Dentistry, Barts & The London School of Medicine & Dentistry, Queen Mary University of London, London, UK
| | - Bun San Chong
- Institute of Dentistry, Barts & The London School of Medicine & Dentistry, Queen Mary University of London, London, UK
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Babashahi E, Kartalaie MM, Basir L, Rakhshan V. Volumetric Assessment of Root Canal Obturation Using 3% Nano-Chitosan versus Zinc Oxide Eugenol (ZOE) and Iodoform-Calcium Hydroxide (Metapex), in Primary Root Canals Shaped with Rotary versus Manual Methods: A Preliminary In-Vitro Spiral CT Study. Front Dent 2019; 16:45-54. [PMID: 31608336 PMCID: PMC6778614 DOI: 10.18502/fid.v16i1.1108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Accepted: 11/13/2018] [Indexed: 11/24/2022] Open
Abstract
Objectives: In this study, chitosan was introduced and used as a substitute for pulpectomy obturation against conventional materials: zinc oxide eugenol (ZOE) and iodoform-calcium hydroxide (Ca(OH)2). Efficacies of rotary versus manual instrumentations were also compared. Materials and Methods: This preliminary study was performed on 152 intact nonresorbed root canals of primary molars divided into rotary (n=78) versus hand-instrumentation (n=74) and into ZOE (n=53), iodoform-Ca(OH)2 (n=50), and 3% nano-chitosan (n=49). Canals were cleaned/shaped using hand or rotary files. Canal spaces were measured using spiral computed tomography and obturated using the three materials. The percentages of obturation volume (POV) were estimated. Rotary and manual instrumentations were compared in terms of canal spaces before and after obturation. Three obturation materials were also compared regarding canal spaces after obturation (α=0.05). Results: Average POVs of materials were 96.54% (ZOE), 97.87% (Metapex), and 74.74% (nano-chitosan; P=0.000). POV of chitosan differed from the other two (P<0.001) but the other two were similar (P=0.896). Average POVs were 91.46% (manual) and 88.51% (rotary); the difference was not significant (P=0.322). Preobturation spaces of canals for different methods were 3.89 mm
3
(manual) and 3.26 mm
3
(rotary); the difference was significant (P=0.013). Two-way ANCOVA showed a significant effect of materials (P<0.001) but not root length (P=0.585) or shaping methods (P=0.362) on POVs. Conclusion: Nano-chitosan showed a considerable success rate but it still needs reformulation as it was weaker than the extremely successful commercial competitors. Rotary instrumentation can provide results similar to hand-filing in terms of POV although it might yield smaller canals.
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Affiliation(s)
- Elahe Babashahi
- Department of Pediatric Dentistry, School of Dental Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | | | - Leila Basir
- Department of Pediatric Dentistry, School of Dental Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Donyavi Z, Shokri A, Pakseresht Z, Tapak L, Falahi A, Abbaspourrokni H. Comparative Evaluation of Retreatability of Endodontically Treated Teeth using AH 26, Fluoride Varnish and Mineral Trioxide Aggregate-based Endodontic Sealers. Open Dent J 2019. [DOI: 10.2174/1874210601913010183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Background and Objectives:
Endodontic sealers are used to fill the gap between the root filling material and canal walls. Retrievability is an important requirement for sealers and root filling materials in non-surgical endodontic retreatment. This study sought to assess the retreatability of fluoride varnish, AH 26 and Mineral Trioxide Aggregate (MTA)-based sealers using Cone-Beam Computed Tomography (CBCT).
Materials and Methods:
This in vitro, experimental study evaluated 45 extracted single-rooted, single-canal human mandibular premolars. Teeth with cracks or fracture were excluded. The root canals were prepared using ProTaper Universal rotary system up to size F4 according to the manufacturer’s instructions. The teeth were then randomly divided into three groups of 5% fluoride varnish, AH 26 and MTA Fillapex. CBCT scans were obtained of the teeth with 200 μm voxel size. MATLAB R2012 software was used to quantify the amount of sealer remaining in the canal. Two observers evaluated the images. Data were analyzed using SPSS via the Kruskal-Wallis and Mann Whitney tests.
Results:
The amount of sealer remaining in the root canals was significantly different among the three groups (P<0.05). The amount of AH 26 sealer remaining in the root canals (1.91±1.46) was significantly greater than MTA Fillapex (0.62±0.26) and fluoride varnish, but the latter two were not significantly different in this respect (P>0.05).
Conclusion:
Considering the adequate adhesion of fluoride varnish to dentin, its cariostatic effect and low cost, it seems to be a suitable alternative to the commonly used endodontic sealers.
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Alberto Rubino G, de Miranda Candeiro GT, Gonzales Freire L, Faga Iglecias E, de Mello Lemos É, Luiz Caldeira C, Gavini G. Micro-CT Evaluation of Gutta-Percha Removal by Two Retreatment Systems. IRANIAN ENDODONTIC JOURNAL 2018; 13:221-227. [PMID: 29707019 PMCID: PMC5911298 DOI: 10.22037/iej.v13i2.18599] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 01/04/2018] [Accepted: 01/17/2018] [Indexed: 11/20/2022]
Abstract
INTRODUCTION The aim of the present ex vivo research was to compare the remaining filling material and the volumes of dentine removed after retreatment of curved canals with two rotary systems naming ProTaper Universal Retreatment and Mani NRT-GPR using micro-computed tomography (micro-CT). METHODS AND MATERIAL Forty mandibular molars containing two completely separated canals, with curvature angle of 25-35° and a curvature radius <10 mm were prepared to the Mtwo instrument 35/0.04 and filled with warm gutta-percha and AH-Plus sealer. The teeth were randomly divided into 2 groups (n=20), according to the retreatment system evaluated: ProTaper Universal Retreatment (PR group) or Mani NRT-GPR (MR group). Retreatment was considered complete when the working length was reached and when smooth dentinal walls were observed, with no evidence of filling material adhered to instruments or in the irrigating solution. Preoperative and postoperative micro-CT images were obtained with an isotropic voxel size of 11.88 µm to observe the volume of residual filling material in the canals and dentine removed after retreatment. Statistical analysis was performed by Student's t-test (P<0.05). RESULTS The mean percentage of remaining filling material was 12.96% for PR group and 24.26% for MR group (P=0.0056). The percentage of dentin removal was greater in the PR group (5.02%) than MR group (1.36%) (P=0.0028). Both systems failed to completely remove the filling material from the canals. CONCLUSION ProTaper Universal Retreatment system was more effective than Mani NRT-GPR system regarding removal of root filling material and also removed significantly more dentine after retreatment of curved mesial root canals of mandibular molars.
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Affiliation(s)
- Gustavo Alberto Rubino
- Faculdade de Odontologia, Post-graduate Program in Endodontics, University of São Paulo, São Paulo, Brazil;
| | | | - Laila Gonzales Freire
- Faculdade de Odontologia, Post-graduate Program in Endodontics, University of São Paulo, São Paulo, Brazil;
| | - Elaine Faga Iglecias
- Faculdade de Odontologia, Post-graduate Program in Endodontics, University of São Paulo, São Paulo, Brazil;
| | - Érico de Mello Lemos
- Universidade Santa Cecília, Curso de Odontologia, Discipline of Endodontics, Santos, SP, Brazil;
| | - Celso Luiz Caldeira
- Faculdade de Odontologia, Discipline of Endodontics, Department of Restorative Dentistry, University of São Paulo, São Paulo, SP, Brazil
| | - Giulio Gavini
- Faculdade de Odontologia, Discipline of Endodontics, Department of Restorative Dentistry, University of São Paulo, São Paulo, SP, Brazil
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Başer Can ED, Keleş A, Aslan B. Micro-CT evaluation of the quality of root fillings when using three root filling systems. Int Endod J 2016; 50:499-505. [DOI: 10.1111/iej.12644] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 03/31/2016] [Indexed: 12/01/2022]
Affiliation(s)
- E. D. Başer Can
- Department of Endodontics; Faculty of Dentistry; Yeditepe University; Istanbul Turkey
| | - A. Keleş
- Department of Endodontics; Faculty of Dentistry; Ondokuz Mayıs University; Samsun Turkey
| | - B. Aslan
- Department of Endodontics; Faculty of Dentistry; Ankara University; Ankara Turkey
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Pelegrine RA, Paulillo LAMS, Kato AS, Fontana CE, Pinheiro SL, De Martin AS, Bueno CEDS. Effect of Endodontic Retreatment on Push-out Bond Strength and Quality of Fiber Postbonding Interface of Resin Cements. J Contemp Dent Pract 2016; 17:42-8. [PMID: 27084862 DOI: 10.5005/jp-journals-10024-1801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
AIM The aim of this study is to evaluate the impact of endodontic retreatment on push-out bond strength and dentin interface of two resin cements used for fiber postcementation during endodontic retreatment. MATERIALS AND METHODS The root canals of 40 extracted human canines were prepared, obturated and divided into four groups (n = 10). Gutta-percha was partially removed and fiber posts were immediately cemented in groups 1 and 2 using Panavia F with ED Primer and RelyX™ U200, respectively. In groups 3 and 4, the root canal access was sealed with temporary restorative cement, specimens were stored for 30 days, endodontically retreated, and fiber posts were cemented using the resin cements applied to groups 1 and 2, respectively. Push-out tests and scanning electron microscopy analyses of different areas were performed. Data from push-out bond strengths were analyzed by one-way analysis of variance and Tukey's tests. RESULTS Higher bond strength values were detected in the apical third for group 1 than group 3 (p < 0.05). No differences were observed in other comparisons between the same third of different groups (p > 0.05). Comparisons between different thirds in the same group revealed a higher bond strength in the apical third for group 1. Scanning electron microscopy showed formation of hybrid layer and extensive resin tags in group 1. No hybrid layer was observed in groups 2 and 4. CONCLUSION Endodontic retreatment had adverse effects on the push-out bond strength and dentinal interface of Panavia F with ED Primer when used for fiber postcementation specifically in the apical third, but not on RelyX™ U200. CLINICAL SIGNIFICANCE A significant interaction was detected between endodontic retreatment and resin cement, which indicated that endodontic retreatment might adversely affect the push-out bond strength and dentinal interface of Panavia F with ED Primer when used for fiber postcementation specifically in the apical third.
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Affiliation(s)
- Rina Andréa Pelegrine
- Professor, Department of Endodontics, São Leopoldo Mandic Institute and Research Center, São Paulo, Brazil, Phone: +551932725219 e-mail:
| | | | - Augusto Shoji Kato
- Department of Endodontics, São Leopoldo Mandic Institute and Research Center, São Paulo, Brazil
| | - Carlos Eduardo Fontana
- Department of Endodontics, São Leopoldo Mandic Institute and Research Center, São Paulo, Brazil
| | - Sérgio Luiz Pinheiro
- Department of Restorative Dentistry, Catholic University of Campinas, Campinas, São Paulo, Brazil
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Plotino G, Ahmed HMA, Grande NM, Cohen S, Bukiet F. Current Assessment of Reciprocation in Endodontic Preparation: A Comprehensive Review—Part II: Properties and Effectiveness. J Endod 2015; 41:1939-50. [DOI: 10.1016/j.joen.2015.08.018] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Capar ID, Arslan H, Ertas H, Gök T, Saygılı G. Effectiveness of ProTaper Universal retreatment instruments used with rotary or reciprocating adaptive motion in the removal of root canal filling material. Int Endod J 2014; 48:79-83. [DOI: 10.1111/iej.12279] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Accepted: 03/10/2014] [Indexed: 11/29/2022]
Affiliation(s)
- I. D. Capar
- Department of Endodontics; Faculty of Dentistry; İzmir Katip Çelebi University; İzmir Turkey
| | - H. Arslan
- Department of Endodontics; Faculty of Dentistry; Atatürk University; Erzurum Turkey
| | - H. Ertas
- Department of Endodontics; Faculty of Dentistry; İzmir Katip Çelebi University; İzmir Turkey
| | - T. Gök
- Department of Endodontics; Faculty of Dentistry; İzmir Katip Çelebi University; İzmir Turkey
| | - G. Saygılı
- Department of Endodontics; Faculty of Dentistry; İzmir Katip Çelebi University; İzmir Turkey
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Neelakantan P, Grotra D, Sharma S. Retreatability of 2 mineral trioxide aggregate-based root canal sealers: a cone-beam computed tomography analysis. J Endod 2013; 39:893-6. [PMID: 23791258 DOI: 10.1016/j.joen.2013.04.022] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 03/03/2013] [Accepted: 04/03/2013] [Indexed: 11/16/2022]
Abstract
INTRODUCTION The retreatability of recent calcium silicate or mineral trioxide aggregate (MTA) sealers has not yet been assessed. The aim of this study was to evaluate the removal of 2 MTA-based sealers (MTA Fillapex [Angelus Soluções Odontológicas, Londrina, PR, Brazil] and MTA Plus [Prevest-Denpro, Jammu City, India]) using a rotary retreatment system, considering an epoxy resin sealer (AH Plus [Dentsply Maillefer, Ballaigues, Switzerland]) as the standard for comparison. METHODS Root canals in 45 single-rooted teeth were instrumented using a rotary nickel-titanium system (MTwo; VDW GmbH, Munich, Germany) and obturated with gutta-percha using one of the following sealers (n = 15): group 1, MTA Fillapex; group 2, MTA Plus; and group 3, AH Plus. The teeth were scanned using a cone-beam computed tomography scanner. After 2 months, the root canals were retreated with a rotary retreatment system (ProTaper Universal Retreatment; Dentsply Maillefer, Ballaigues, Switzerland) and a second cone-beam computed tomography scan was performed to assess the amount of remaining root filling material (in percentage) and dentin removal (in cubic millimeters). The time taken to reach the working length was calculated in minutes. Group comparisons were performed using 1-way analysis of variance and the Student-Newman-Keuls post hoc test (P = .05). RESULTS There was a significant difference in the amount of remaining root filling material between the 3 groups (P < .05), with group 1 showing the least amount of root filling material (1.8% ± 0.22%) and group 3 showing the highest (10.4% ± 0.71%). The amount of dentin removal and the time taken to reach the working length was significantly higher in group 3 than in groups 1 and 2 (P < .05). There was no significant difference between groups 1 and 2 in these outcome variables (P > .05). CONCLUSIONS The rotary retreatment system evaluated was not able to completely remove any of the sealers. MTA Fillapex showed less remaining root filling material than MTA Plus.
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Affiliation(s)
- Prasanna Neelakantan
- Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha University, Chennai, India.
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Gandolfi MG, Parrilli AP, Fini M, Prati C, Dummer PMH. 3D micro-CT analysis of the interface voids associated with Thermafil root fillings used with AH Plus or a flowable MTA sealer. Int Endod J 2012; 46:253-63. [DOI: 10.1111/j.1365-2591.2012.02124.x] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Accepted: 07/23/2012] [Indexed: 11/30/2022]
Affiliation(s)
- M. G. Gandolfi
- Laboratory of Biomaterials and Oral Pathology, Department of Odontostomatological Science; University of Bologna; Bologna; Italy; Italy
| | - A. P. Parrilli
- Laboratory of Preclinical and Surgical Studies; Rizzoli Orthopaedic Institute; Bologna; Italy
| | - M. Fini
- Laboratory of Preclinical and Surgical Studies; Rizzoli Orthopaedic Institute; Bologna; Italy
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Rödig T, Hausdörfer T, Konietschke F, Dullin C, Hahn W, Hülsmann M. Efficacy of D-RaCe and ProTaper Universal Retreatment NiTi instruments and hand files in removing gutta-percha from curved root canals - a micro-computed tomography study. Int Endod J 2012; 45:580-9. [PMID: 22264204 DOI: 10.1111/j.1365-2591.2012.02014.x] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
AIM To compare the efficacy of two rotary NiTi retreatment systems and Hedström files in removing filling material from curved root canals. METHODOLOGY Curved root canals of 57 extracted teeth were prepared using FlexMaster instruments and filled with gutta-percha and AH Plus. After determination of root canal curvatures and radii in two directions, the teeth were assigned to three identical groups (n = 19). The root fillings were removed with D-RaCe instruments, ProTaper Universal Retreatment instruments or Hedström files. Pre- and postoperative micro-CT imaging was used to assess the percentage of residual filling material as well as the amount of dentine removal. Working time and procedural errors were recorded. Data were analysed using analysis of covariance and analysis of variance procedures. RESULTS D-RaCe instruments were significantly more effective than ProTaper Universal Retreatment instruments and Hedström files (P < 0.05). Hedström files removed significantly less dentine than the rotary NiTi systems (P < 0.0001). D-RaCe instruments were significantly faster compared to both other groups (P < 0.05). No procedural errors such as instrument fracture, blockage, ledging or perforation were detected in the Hedström group. In the ProTaper group, four instrument fractures and one lateral perforation were observed. Five instrument fractures were recorded for D-RaCe. CONCLUSIONS D-RaCe instruments were associated with significantly less residual filling material than ProTaper Universal Retreatment instruments and hand files. Hedström files removed significantly less dentine than both rotary NiTi systems. Retreatment with rotary NiTi systems resulted in a high incidence of procedural errors.
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Affiliation(s)
- T Rödig
- Department of Preventive Dentistry, Periodontology and Cariology, University of Göttingen, Göttingen Centre for Statistics, University of Göttingen, Germany.
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Yilmaz Z, Karapinar SP, Ozcelik B. Efficacy of rotary Ni-Ti retreatment systems in root canals filled with a new warm vertical compaction technique. Dent Mater J 2011; 30:948-53. [PMID: 22123022 DOI: 10.4012/dmj.2011-123] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim of this study was to compare the efficacy of Mtwo, ProTaper retreatment files and Hedström files for the retreatment of root canals filled with BeeFill 2 in1 and cold lateral compaction techniques. 63 single-rooted human teeth were prepared with Mtwo rotary files to size 35/.04 and assigned into three groups (n=21/group). (1) BeeFill 2 in1/2Seal, (2) BeeFill 2 in1/AH26 and (3) laterally-compacted gutta-percha/AH26. The specimens were subgrouped according to the file system used to remove root fillings (n=7/subgroup): 1. Mtwo retreatment file, 2. ProTaper retreatment file, 3. Hedström file. Roots were split longitudinally and photographed. The time required for removal of root canal fillings and the areas of residual root filling materials were compared statistically (p<0.05). The maximum amount of remnant was observed in the Mtwo group for removal of BeeFill 2 in1/AH26. ProTaper retreatment files required less time to remove root filling material than Mtwo retreatment files and Hedström files (p<0.05). Among the tested removal systems, ProTaper retreatment files may offer the best efficiency-speed combination.
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Affiliation(s)
- Zeliha Yilmaz
- Department of Endodontics, Faculty of Dentistry, Hacettepe University
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HÜLSMANN MICHAEL, DREBENSTEDT STEFFI, HOLSCHER CHRISTIAN. Shaping and filling root canals during root canal re-treatment. ACTA ACUST UNITED AC 2011. [DOI: 10.1111/j.1601-1546.2011.00264.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Nica LM, Didilescu A, Rusu D, Bacila A, Stratul SI. Photomicrographic evaluation of the apical sealing capacity of three types of gutta-percha master cones: an in vitro study. Odontology 2011; 100:54-60. [DOI: 10.1007/s10266-011-0017-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2010] [Accepted: 12/12/2010] [Indexed: 10/18/2022]
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Zarei M, Talati A, Mortazavi M, Zarch HH, Javidi M, Bidokhty HA. In-vitro evaluation of the effect of canal curvature on adaptation of gutta-percha in canals obturated with HEROfill system by CBCT. J Oral Sci 2011; 53:43-50. [DOI: 10.2334/josnusd.53.43] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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18
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Roggendorf MJ, Legner M, Ebert J, Fillery E, Frankenberger R, Friedman S. Micro-CT evaluation of residual material in canals filled with Activ GP or GuttaFlow following removal with NiTi instruments. Int Endod J 2010; 43:200-9. [DOI: 10.1111/j.1365-2591.2009.01659.x] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Evaluation of Root Canal Obturation: A Three-dimensional In Vitro Study. J Endod 2009; 35:541-4. [PMID: 19345801 DOI: 10.1016/j.joen.2008.12.021] [Citation(s) in RCA: 116] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2008] [Revised: 12/19/2008] [Accepted: 12/24/2008] [Indexed: 11/21/2022]
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Hammad M, Qualtrough A, Silikas N. Three-dimensional Evaluation of Effectiveness of Hand and Rotary Instrumentation for Retreatment of Canals Filled with Different Materials. J Endod 2008; 34:1370-1373. [PMID: 18928849 DOI: 10.1016/j.joen.2008.07.024] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2008] [Revised: 07/22/2008] [Accepted: 07/27/2008] [Indexed: 12/01/2022]
Affiliation(s)
- Mohammad Hammad
- School of Dentistry, University of Manchester, Manchester, United Kingdom.
| | - Alison Qualtrough
- School of Dentistry, University of Manchester, Manchester, United Kingdom
| | - Nick Silikas
- School of Dentistry, University of Manchester, Manchester, United Kingdom
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Taşdemir T, Yildirim T, Celik D. Comparative Study of Removal of Current Endodontic Fillings. J Endod 2008; 34:326-9. [PMID: 18291287 DOI: 10.1016/j.joen.2007.12.022] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2007] [Revised: 12/27/2007] [Accepted: 12/29/2007] [Indexed: 11/20/2022]
Affiliation(s)
- Tamer Taşdemir
- Department of Endodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkey.
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