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Brito-Júnior M, Silva-Sousa YTC, Pereira RD, Camilo CC, Mazzi-Chaves JF, Lopes-Olhê FC, Sousa-Neto MD. An automated method to analyze root filling voids and gaps using confocal microscopy images. Odontology 2024; 112:546-551. [PMID: 37803215 DOI: 10.1007/s10266-023-00859-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 09/21/2023] [Indexed: 10/08/2023]
Abstract
This study evaluated the feasibility of an automated method to delimit the required area to quantitatively analyze root filling voids and gaps from cross-sectional confocal laser scanning microscopy (CLSM) images. Root canals of maxillary canines were prepared with rotary instruments and filled by lateral compaction technique using gutta-percha and AH Plus sealer. The roots were stored (100% humidity, 37 °C) for a period of 24 h and then transversally sectioned to obtain 2-mm-thick slices from the apical and middle thirds. The areas corresponding to filling materials, gaps, and voids were manually delimited or automatically demarked by ImageJ software after converting the images to the RGB color system. Based on manual and automatic delimitations, the percentages of voids and gaps were calculated. Data of voids and gaps between middle and apical thirds were individually compared by paired t-test. Pearson`s correlation test was used to assess the correlation of data between the methods. Irrespective of the method of area delimitation, no difference was observed between the root thirds for both voids and gaps, while the p-values calculated for each method were similar. Almost perfect correlations between the methods were observed for both outcomes. The proposed method to automatically delimit the areas corresponding to filling material, voids, and gaps appears to be a valid method to facilitate the quantitative analysis of defects in root canal fillings using topographic CSLM images.
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Affiliation(s)
- Manoel Brito-Júnior
- Department of Dentistry, UNIMONTES - State University of Montes Claros, Montes Claros, MG, Brazil
| | | | - Rodrigo Dantas Pereira
- Department of Dentistry, UNIMONTES - State University of Montes Claros, Montes Claros, MG, Brazil
| | - Carla Cristina Camilo
- Department of Dentistry, UNIMONTES - State University of Montes Claros, Montes Claros, MG, Brazil
| | - Jardel Francisco Mazzi-Chaves
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo - USP, Rua Célia de Oliveira Meirelles 350, Ribeirão Preto, SP, 14024-070, Brazil
| | - Fabiane Carneiro Lopes-Olhê
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo - USP, Rua Célia de Oliveira Meirelles 350, Ribeirão Preto, SP, 14024-070, Brazil
| | - Manoel D Sousa-Neto
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo - USP, Rua Célia de Oliveira Meirelles 350, Ribeirão Preto, SP, 14024-070, Brazil.
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Barbero-Navarro I, Velázquez-González D, Irigoyen-Camacho ME, Zepeda-Zepeda MA, Mauricio P, Ribas-Perez D, Castano-Seiquer A. Assessment of the Penetration of an Endodontic Sealer into Dentinal Tubules with Three Different Compaction Techniques Using Confocal Laser Scanning Microscopy. J Funct Biomater 2023; 14:542. [PMID: 37998111 PMCID: PMC10672033 DOI: 10.3390/jfb14110542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 10/31/2023] [Accepted: 11/03/2023] [Indexed: 11/25/2023] Open
Abstract
Adequate root canal sealing is essential for the success of endodontic treatment. There are numerous techniques available; identifying simple and efficient techniques is important to provide good patient care. The purpose of the study was to compare the maximum penetration depth and the percentage of sealant penetration of an endodontic sealer into dentine tubules using cold lateral condensation, continuous wave, and hybrid techniques, and to contrast the effectiveness of two different tapered gutta-percha master cones (0.02 and 0.04). A sample of sixty single root teeth was used. Six experimental groups were formed from the three filling techniques and the two tapered master cones. Images were acquired using a confocal laser scanning microscope. In the apical root third, the penetration percentage was higher in the hybrid compared with the continuous wave technique. The results indicated a higher penetration depth of hybrid compared with cold lateral condensation in the middle and coronal thirds, and in the apical third, a higher penetration was identified in the hybrid group compared with the continuous wave group. No significant differences in penetration were found comparing 0.02 with 0.04 taper gutta-percha groups. The coronal cross-sections presented a higher penetration than the apical third sections. In conclusion, the hybrid technique a had higher maximum sealer penetration than the continuous wave in the apical third, and the coronal third hybrid and continuous wave had a higher penetration than cold lateral condensation.
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Affiliation(s)
- Ignacio Barbero-Navarro
- Dental School, University Institute Egas Moniz (IUEM), 2800-064 Almada, Portugal; (I.B.-N.)
- Dental School, University of Seville, 41009 Seville, Spain;
| | | | | | | | - Paulo Mauricio
- Interdisciplinary Research Centre, University Institute Egas Moniz (IUEM), 2800-064 Almada, Portugal
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Streck JNZ, Arcaro S, Ceretta RA, Bortoluzzi EA, Garcia LDFR, de Almeida J, Kopper PMP, Bernardi AV. Tip and taper compatibility of accessory gutta-percha points with rotary and reciprocating instruments. Restor Dent Endod 2023; 48:e22. [PMID: 37675449 PMCID: PMC10477427 DOI: 10.5395/rde.2023.48.e22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 03/13/2023] [Accepted: 03/22/2023] [Indexed: 09/08/2023] Open
Abstract
Objectives This study was conducted to evaluate and compare the tip and taper compatibility of accessory gutta-percha points (AGPs) with various rotary and reciprocating instruments. Materials and Methods Using a profile analyzer, tip and taper measurements were taken of 10 AGPs of each of the 14 models available from Odous de Deus and the 4 models available from Dentsply-Maillefer. Diameter measurements were taken at 1-mm intervals, from 3 mm from the tip (D3) to 16 mm. Results Based on the mean values obtained, 3-dimensional (3D) models of the AGPs were drawn in Autodesk Fusion 360 and superimposed on 3D models of each instrument selected (Mtwo, Reciproc, RaCe, K3, and ProDesign Logic) to determine the compatibility between the instrument and the AGP. Data corresponding to the tips and tapers of the various AGPs, as well as the tip and taper differences between the AGPs and the instruments, were analyzed using descriptive statistics. The tapers of the AGPs were subject to the American National Standards Institute/American Dental Association No. 57 standard. The Odous de Deus extra-long medium and extra-long extra-medium AGPs were shown to be compatible with Mtwo, K3, and ProDesign Logic instruments with taper 0.06 and tip sizes 25 and 30, while the Dentsply fine and fine medium cones were compatible with Mtwo, RaCe, and K3 instruments with conicity of 0.04 and tip sizes 35 and 40. Conclusions Both the Odous de Deus and Dentsply commercial brands included 2 AGP models with tip (D3) and taper compatibility with Mtwo, RaCe, K3, and/or Prodesign Logic instruments.
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Affiliation(s)
- Júlia Niero Zanatta Streck
- Department of Endodontics, School of Dentistry, University of Extreme Southern Santa Catarina, Criciúma, SC, Brazil
| | - Sabrina Arcaro
- Department of Endodontics, School of Dentistry, University of Extreme Southern Santa Catarina, Criciúma, SC, Brazil
| | - Renan Antônio Ceretta
- Department of Endodontics, School of Dentistry, University of Extreme Southern Santa Catarina, Criciúma, SC, Brazil
| | - Eduardo Antunes Bortoluzzi
- Department of Diagnosis & Oral Health, Division of Endodontics, School of Dentistry, University of Louisville, Louisville, KY, USA
| | | | - Josiane de Almeida
- Department of Endodontics, School of Dentistry, University of Southern Santa Catarina, Florianópolis, SC, Brazil
| | - Patrícia Maria Poli Kopper
- Program in Dentistry, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Anarela Vassen Bernardi
- Department of Endodontics, School of Dentistry, University of Extreme Southern Santa Catarina, Criciúma, SC, Brazil
- Biomaterials Group, Graduate Program in Materials Science and Engineering, University of Extreme Southern Santa Catarina, Criciúma, SC, Brazil
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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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Single Cone Obturation versus Cold Lateral Compaction Techniques with Bioceramic and Resin Sealers: Quality of Obturation and Push-Out Bond Strength. Int J Dent 2023; 2023:3427151. [PMID: 36704662 PMCID: PMC9873427 DOI: 10.1155/2023/3427151] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 12/26/2022] [Accepted: 01/12/2023] [Indexed: 01/19/2023] Open
Abstract
Objectives This study compared the obturation quality and push-out bond strength of single cone obturation (SCO) and cold lateral compaction (CLC) with AH-Plus and Sure Seal Root (SSR). Materials and Methods This in vitro experimental study was conducted on 88 single-rootedsingle-canal teeth with straight roots that were randomly divided into four groups (n = 22). All teeth were decoronated and underwent cleaning and shaping. Obturation was performed with AH-Plus and SCO technique in group 1 (SAH), AH-Plus and CLC technique in group 2 (LAH), SSR and SCO technique in group 3 (SS), and SSR and CLC technique in group 4 (LS). The roots were then sectioned into 3-mm thick slices and underwent digital photography at x25 magnification to assess the quality of obturation in the coronal, middle, and apical thirds by Image J software. The PBS was measured by a universal testing machine. The mode of failure was also determined under a stereomicroscope. Results The PBS was significantly higher in the LSS group than LAH and SAH groups, and also in the SSS group than the SAH group in all sections. The PBS in the LSS group was significantly higher than SSS in the coronal and middle thirds. Voids were significantly lower in LAH than in the SAH group in all sections. In LSS, voids in the coronal third were significantly lower than in LAH. In the middle third, voids in SSS were significantly lower than in SAH. The groups had no significant difference in the mode of failure (P > 0.05). The mean percentage of gutta-percha in the use of AH-Plus sealer was significantly higher than SSR (P < 0.05). The mean percentage of gutta-percha in the coronal third was lower than that in the middle and apical thirds (P < 0.05). Conclusion SSR showed higher PBS and less voids than AH-Plus. High PBS of the CLC/SSR group showed that CLC should still be preferred to SCO, and in the case of using SCO, SSR should be preferred to AH-Plus.
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Boetto AC, Arce-Brisson G, Zmener O, Pameijer C, Della-Porta R, Picca M. Ability of two reciprocating Nickel-Titanium instruments for guttapercha/ sealer removal in simulated curved root canals. ACTA ODONTOLOGICA LATINOAMERICANA : AOL 2022; 35:39-44. [PMID: 35700540 DOI: 10.54589/aol.35/1/39] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 02/01/2022] [Indexed: 06/15/2023]
Abstract
The aim of this study was to compare the capacity of two reciprocating NiTi instruments in removing gutta-percha/sealer material from simulated curved root canals (SCRC). The time required for filling material removal was also recorded. Twenty SCRCs were divided into two groups of 10 (n=10) samples each. In Group 1, the SCRC were prepared to a R25 Reciproc Blue instrument (RCPB; VDW, Munich, Germany). In Group 2 the SCRC were prepared to a Primary WaveOne Gold instrument (PWOG; Dentsply, Ballaigues, Switzerland). In both groups, the canals were filled with matched-taper single gutta-percha cones and AH Plus sealer. Filling materials were removed with R25 RCPB (Group 1) and PWOG (Group 2). The amount of remaining gutta-percha/sealer was calculated at three predetermined levels of evaluation located at 2, 6 and 10 mm from the WL and expressed in percentages. Canals re-treated with RCPB contained significantly less remaining gutta-percha/sealer compared tocanalspreparedwith PWOG (P=0.02). The RCPB instruments required significantly less time to complete the retreatment procedures (P<0.01). No unwinding or instrument separation was noted. RCPB instruments removed significantly more gutta-percha/sealer from simulated curved root canals than PWOG. However, neither of the tested instruments completely removed all filling materials.
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Affiliation(s)
- Ana C Boetto
- Universidad Nacional de Córdoba, Facultad de Odontología, Cátedra de Endodoncia, Córdoba, Argentina
| | - Georgette Arce-Brisson
- Universidad Nacional de Córdoba, Facultad de Odontología, Cátedra de Endodoncia, Córdoba, Argentina
| | - Osvaldo Zmener
- Universidad del Salvador/Asociación Odontológica Argentina, Facultad de Medicina, Escuela de Odontología, Post Grado de Endodoncia, Buenos Aires, Argentina.
| | - Cornelis Pameijer
- University of Connecticut School of Dental Medicine, Department of Reconstructive Sciences, Connecticut, USA
| | - Roberto Della-Porta
- Universidad del Salvador/Asociación Odontológica Argentina, Facultad de Medicina, Escuela de Odontología, Post Grado de Endodoncia, Buenos Aires, Argentina
| | - Mariana Picca
- Universidad de Buenos Aires, Facultad de Odontología, Cátedra de Materiales Dentales, Buenos Aires, Argentina
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Gavini G, Candeiro GTDM, Potgornik Ferreira F, Rubino GA, Aun CA, Bezerra AG, Malavasi M, Lemos ÉM, Caldeira CL, Akisue E. Retrospective study of endodontic treatment performed by undergraduate students using reciprocating instrumentation and single‐cone obturation. J Dent Educ 2022; 86:751-758. [DOI: 10.1002/jdd.12884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 12/13/2021] [Accepted: 12/23/2021] [Indexed: 11/11/2022]
Affiliation(s)
- Giulio Gavini
- Department of Restorative Dentistry Faculty of Dentistry University of São Paulo São Paulo Brazil
| | | | | | - Gustavo Alberto Rubino
- Department of Restorative Dentistry Faculty of Dentistry University of São Paulo São Paulo Brazil
| | - Carmo Antônio Aun
- Department of Restorative Dentistry Faculty of Dentistry ‐ Discipline of Endodontics University Santa Cecília Santos Brazil
| | - Alexandre Gomes Bezerra
- Department of Restorative Dentistry Faculty of Dentistry ‐ Discipline of Endodontics University Santa Cecília Santos Brazil
| | - Maurílio Malavasi
- Department of Restorative Dentistry Faculty of Dentistry ‐ Discipline of Endodontics University Santa Cecília Santos Brazil
| | - Érico Melo Lemos
- Department of Restorative Dentistry Faculty of Dentistry ‐ Discipline of Endodontics University Santa Cecília Santos Brazil
| | - Celso Luiz Caldeira
- Department of Restorative Dentistry Faculty of Dentistry University of São Paulo São Paulo Brazil
| | - Eduardo Akisue
- Department of Restorative Dentistry Faculty of Dentistry ‐ Discipline of Endodontics University Santa Cecília Santos Brazil
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Zare S, Shen I, Zhu Q, Ahn C, Primus C, Komabayashi T. Micro-computed tomographic evaluation of single-cone obturation with three sealers. Restor Dent Endod 2021; 46:e25. [PMID: 34123761 PMCID: PMC8170377 DOI: 10.5395/rde.2021.46.e25] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Revised: 11/04/2020] [Accepted: 12/09/2020] [Indexed: 11/24/2022] Open
Abstract
Objectives This study used micro-computed tomography (µCT) to compare voids and interfaces in single-cone obturation among AH Plus, EndoSequence BC, and prototype surface pre-reacted glass ionomer (S-PRG) sealers and to determine the percentage of sealer contact at the dentin and gutta-percha (GP) interfaces. Materials and Methods Fifteen single-rooted human teeth were shaped using ProTaper NEXT size X5 rotary files using 2.5% NaOCl irrigation. Roots were obturated with a single-cone ProTaper NEXT GP point X5 with AH Plus, EndoSequence BC, or prototype S-PRG sealer (n = 5/group). Results The volumes of GP, sealer, and voids were measured in the region of 0–2, 2–4, 4–6, and 6–8 mm from the apex, using image analysis of sagittal µCT scans. GP volume percentages were: AH Plus (75.5%), EndoSequence BC (87.3%), and prototype S-PRG (94.4%). Sealer volume percentages were less: AH Plus (14.3%), EndoSequence BC (6.8%), and prototype S-PRG (4.6%). Void percentages were AH Plus (10.1%), EndoSequence BC (5.9%), and prototype S-PRG (1.0%). Dentin-sealer contact ratios of AH Plus, EndoSequence BC, and prototype S-PRG groups were 82.4% ± 6.8%, 71.6% ± 25.3%, and 70.2% ± 9.4%, respectively. GP-sealer contact ratios of AH Plus, EndoSequence BC, and prototype S-PRG groups were 65.6% ± 29.1%, 80.7% ± 25.8%, and 87.0% ± 8.6%, respectively. Conclusions Prototype S-PRG sealer created a low-void obturation, similar to EndoSequence BC sealer with similar dentin-sealer contact (> 70%) and GP-sealer contact (> 80%). Prototype S-PRG sealer presented comparable filling quality to EndoSequence BC sealer.
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Affiliation(s)
- Sahar Zare
- University of New England College of Dental Medicine, Portland, ME, USA
| | - Ivy Shen
- University of New England College of Dental Medicine, Portland, ME, USA
| | - Qiang Zhu
- Division of Endodontology, University of Connecticut School of Dental Medicine, Farmington, CT, USA
| | - Chul Ahn
- Department of Clinical Sciences, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Carolyn Primus
- Augusta University Dental College of Georgia, Augusta, GA, USA
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Machado R, Koetz R, Comparin D, Alberton LR, da Fonseca Roberti Garcia L, Xavier da Silva Neto U. Correlation among Root Canal Configuration, Quality of Filling, and Its Sealability. Eur J Dent 2021; 15:568-573. [PMID: 33622010 PMCID: PMC8382461 DOI: 10.1055/s-0041-1724158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Objective
This study aimed to evaluate the existence of possible correlations among root canal configuration, quality of filling, and its sealability.
Materials and Methods
Sixty human mandibular central incisors were selected for this study. The teeth were prepared with the Profile 04 system up to instrument 35/0.04 and irrigated with 2.5 mL of 2.5% sodium hypochlorite at each instrument change. Root canal filling was performed by the lateral compaction technique, using gutta-percha and an epoxy resin-based sealer (AH Plus) labeled with 0.1% Rhodamine B dye. Afterward, the specimens were submitted to fluid filtration tests to assess the sealability of the filling. Cross-sections were obtained at −3, −6, and −8 mm from the root apex and submitted to a metallographic treatment to determine the root canal configuration and the percentage of gutta-percha filled areas. The data were statistically analyzed by the Grubbs test. Pairs of correlations were analyzed by applying the Spearman test at a level of significance of 5%.
Results
No correlation was observed among the analyzed variables as follows: root canal configuration versus filling quality (Spearman’s rho = 0.031); filling quality versus sealability (Spearman’s rho = 0.219); and root canal configuration versus sealability (Spearman’s rho = 0.184).
Conclusion
The root canal configuration did not affect the quality of the filling and its sealability.
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Affiliation(s)
- Ricardo Machado
- Department of Endodontics, School of Health and Bioscience, Pontifical Catholic University of Paraná, Curitiba, Paraná, Brazil
| | - Ricardo Koetz
- Department of Endodontics, School of Dentistry, Paranaense University, Francisco Beltrão, Paraná, Brazil
| | - Daniel Comparin
- Department of Endodontics, School of Dentistry, Paranaense University, Francisco Beltrão, Paraná, Brazil
| | - Luiz Rômulo Alberton
- Department of Veterinary Medicine and Graduate Program in Animal Science, Paranaense University, Umuarama, Paraná, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Ulisses Xavier da Silva Neto
- Department of Endodontics, School of Health and Bioscience, Pontifical Catholic University of Paraná, Curitiba, Paraná, Brazil
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Physico-Chemical Investigation of Endodontic Sealers Exposed to Simulated Intracanal Heat Application: Hydraulic Calcium Silicate-Based Sealers. MATERIALS 2021; 14:ma14040728. [PMID: 33557325 PMCID: PMC7915265 DOI: 10.3390/ma14040728] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 01/22/2021] [Accepted: 01/27/2021] [Indexed: 12/17/2022]
Abstract
The aim of this study was to gain information about the effect of thermal treatment of calcium silicate-based sealers. BioRoot RCS (BR), Total Fill BC Sealer (TFBC), and Total Fill BC Sealer HiFlow (TFHF) were exposed to thermal treatment at 37 °C, 47 °C, 57 °C, 67 °C, 77 °C, 87 °C and 97 °C for 30 s. Heat treatment at 97 °C was performed for 60 and 180 s to simulate inappropriate application of warm obturation techniques. Thereafter, specimens were cooled to 37 °C and physical properties (setting time/flow/film thickness according to ISO 6876) were evaluated. Chemical properties (Fourier-transform infrared spectroscopy) were assessed after incubation of the specimens in an incubator at 37 °C and 100% humidity for 8 weeks. Statistical analysis of physical properties was performed using the Kruskal-Wallis-Test (P = 0.05). The setting time, flow, and film thickness of TFBC and TFHF were not relevantly influenced by thermal treatment. Setting time of BR decreased slightly when temperature of heat application increased from 37 °C to 77 °C (P < 0.05). Further heat treatment of BR above 77 °C led to an immediate setting. FT-IR spectroscopy did not reveal any chemical changes for either sealers. Thermal treatment did not lead to any substantial chemical changes at all temperature levels, while physical properties of BR were compromised by heating. TFBC and TFHF can be considered suitable for warm obturation techniques.
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Assessment of Quality of Root Canal Filling with C Point, Guttacore and Lateral Compaction Technique: A Confocal Laser Scanning Microscopy Study. Eur Endod J 2020; 5:236-241. [PMID: 33353918 PMCID: PMC7881386 DOI: 10.14744/eej.2020.62534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Objective: The purpose of this in vitro study was to compare the quality of root canal filling of C Point, GuttaCore and lateral compaction using confocal laser scanning microscopy. Methods: Ninety recently extracted human mandibular incisors with single canal were selected. Canals were prepared with ProTaper instruments to size F3 and obturated using C Point, GuttaCore or lateral compaction technique. Endosequence BC sealer was labeled with Rhodamine B dye to allow analysis under a confocal microscope. The percentages of gutta-percha filled area (PGFA), sealer filled area (PSFA), voids (POV) and interfacial adaptation (IA) was assessed at 2, 5 and 8 mm from the apex, using image analysis software. Kruskal–Wallis followed by Mann Whitney U tests were used for data analysis, and the P value was set at 0.05 (P=0.05). Results: No significant difference was seen among the three groups at 2 mm level for PGFA, PSFA and voids (P>0.05). At 5 and 8 mm levels, canals filled with GuttaCore had significantly higher PGFA and lower PSFA than lateral compaction and C Point. Highest POV was seen for lateral compaction group followed by C Point and GuttaCore. Conclusion: Out of the three techniques examined, best results in terms of quality of root canal filling were observed for GuttaCore. C Point system was found to be associated with internal defects such as tears and delamination which may adversely affect the long term performance of this system.
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Eymirli A, Uzunoğlu Özyürek E, Serper A. Sealer penetration: effect of separated file's cross-section, taper and motion characteristics. Clin Oral Investig 2020; 25:1077-1084. [PMID: 32562075 DOI: 10.1007/s00784-020-03404-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Accepted: 06/10/2020] [Indexed: 01/16/2023]
Abstract
OBJECTIVES The separated root canal instruments may affect the quality of root canal filling, hence the success of endodontic treatment. The aim of this study was to evaluate the effects of separated file fragments of nickel-titanium rotary systems with different cross-section, taper and motion characteristics on the apical sealer penetration in oval-shaped root canals via confocal laser scanning microscope (CLSM). MATERIALS AND METHODS Distal roots of 60 mandibular molars with oval-shaped root canals were randomly divided into 4 groups as follows: group 1, FlexMaster Nickel Titanium Rotary File System (NTRFS) (separated instrument: 30/.06); group 2, ProTaper Next NTRFS (X3); group 3, ProTaper Universal NTRFS (F3); group 4, Revo-S NTRFS (AS30/.06). Root canals were filled with gutta-percha and AH plus labelled with 0.1% rhodamine B using a warm vertical compaction technique. Each specimen was horizontally sectioned at 1st, 3rd and 5th mm from apical foramen. Amount of maximum and average penetration depths, penetration percentage and sealer penetrated area were measured and analysed with one-way repeated measures of ANOVA and the Bonferroni post hoc tests. p < 0.05 was considered significant. RESULTS The penetration depth, percentage and penetrated area of the sealer increased from apical to coronal in all systems. The maximum and average penetration depths and penetration areas were higher in FlexMaster and Revo-S groups at the 3rd mm (p < 0.05). At the 5th mm, the Revo-S group had a higher penetration percentage, when compared with ProTaper Next and ProTaper Universal groups (p < 0.05). CONCLUSIONS In the 1st mm, separated fragments of any system did not allow the penetration of the sealer, while it was observed that the files with constant taper showed more positive results in terms of sealer penetration at apical 3rd and 5th mm. CLINICAL RELEVANCE In the presence of a separated file, the taper of the file might significantly affect the amount of penetrated sealer into the dentinal tubules as compared with the cross-section and motion characteristics of the file.
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Affiliation(s)
- Ayhan Eymirli
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, Sihhiye, 06100, Ankara, Turkey
| | - Emel Uzunoğlu Özyürek
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, Sihhiye, 06100, Ankara, Turkey.
| | - Ahmet Serper
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, Sihhiye, 06100, Ankara, Turkey
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Rosatto CMPD, Oliveira LV, Ferraz DC, Soares PBF, Soares CJ, Moura CCG. Apical Displacement and Residual Root Canal Filling with Single-Cone After Post Space Preparation: A Micro-CT Analysis. Braz Dent J 2020; 31:25-31. [PMID: 32159701 DOI: 10.1590/0103-6440202002597] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 10/11/2019] [Indexed: 12/31/2022] Open
Abstract
The purpose of this study was to evaluate the presence of residues after post space preparation (PSP) and establish whether the apical displacement of the gutta-percha was affected by the moments and methods of PSP in teeth filled by the single-cone technique. The root canals of 20 bovine incisor teeth were instrumented with Reciproc and filled with single-cone and AH Plus. The specimens were divided into 4 groups according to the moment and method of PSP (n=5): immediate with drill, immediate with thermoplasticizer, delayed with drill and delayed with thermoplasticizer. Micro-CT scans were performed before and after the PSP for residues of the root canal filling (1) and analysis of apical displacement (2). Data were analyzed by using 2-way repeated measurement ANOVA (1) and 2-way ANOVA (2) followed by the Tukey's test (a=0.05). Significance effect on the residues percentage remaining for methods (p=0.044), for moments (p=0.006), for thirds repetition (p<0.001), and for interaction between methods and thirds (p<0.001), and moments and thirds (p=0.044). Significance effect on the apical displacement of root canal filing was detected for methods (p=0.008), however no difference was found between moments (p=0.617). In general, PSP using drill resulted in more homogeneous root canal preparation, mainly when made immediately. For all other combinations between methods and moments for PSP, the middle and apical thirds presented significant higher residues remaining. Thermo method performed in both moments and the drill method performed immediately had displacement in the apical direction, representing extrusion of the root filling material.
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Affiliation(s)
- Camila Maria Peres de Rosatto
- Department of Endodontics, Dental School, Federal University of Uberlândia, UFU - Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | - Lilian Vieira Oliveira
- Department of Endodontics, Dental School, Federal University of Uberlândia, UFU - Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | - Danilo Cassiano Ferraz
- Department of Endodontics, Dental School, Federal University of Uberlândia, UFU - Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | - Priscilla Barbosa Ferreira Soares
- Department of Periodontology and Implanotology, Dental School, Federal University of Uberlândia, UFU - Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | - Carlos José Soares
- Department of Operative Dentistryand Dental Materials, Dental School, Federal University of UberlândiaUFU - Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | - Camilla Christian Gomes Moura
- Department of Endodontics, Dental School, Federal University of Uberlândia, UFU - Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
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Hirai VHG, Machado R, Budziak MCL, Piasecki L, Kowalczuck A, Neto UXDS. Percentage of Gutta-Percha-, Sealer-, and Void-Filled Areas in Oval-Shaped Root Canals Obturated with Different Filling Techniques: A Confocal Laser Scanning Microscopy Study. Eur J Dent 2020; 14:8-12. [PMID: 32062854 PMCID: PMC7069748 DOI: 10.1055/s-0040-1701543] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Objective
This study compared different obturation techniques, analyzing percentage of areas filled with gutta-percha, sealer, and voids (PGFA, PSFA, and PVFA, respectively) in oval-shaped root canals.
Materials and Methods
A total of 60 extracted human mandibular central incisors were decoronated, instrumented, and irrigated using the same protocol. After drying, the root canal was filled with AH Plus labeled with 0.1% rhodamine B dye using a Lentulo spiral. The filling procedure was performed by dividing the teeth into four groups according to the respective technique: G1, cold lateral condensation; G2, continuous wave of condensation; G3, modified cold lateral condensation using an F3 master cone; and G4, modified continuous wave of condensation using an ISO (International Organization for Standardization) sized 30 gutta-percha cone. Then, slices measuring 1.5 mm in thickness were obtained 3 and 6 mm from the apex and evaluated by confocal laser scanning microscopy to determine PGFA, PSFA, and PVFA.
Statistical Analysis
The data were analyzed statistically with analysis of variance and Games-Howell’s tests (
p
= 0.05).
Results
The groups showed no significant differences in the apical third (3 mm from the apex). In the middle third (6 mm from the apex), G3 and G1 showed higher PGFA and PVFA, respectively. G3 showed lower PSFA than G2 and G4. Both cold techniques (G1 and G3) promoted lower PSFA than both warm techniques (G2 and G4).
Conclusions
Notwithstanding the limitations of this
in vitro
study, PGFA, PSFA, and PVFA ranged significantly only in the middle third, as observed by the different filling techniques. Higher PGFA and PVFA values were obtained for G3 and G1, respectively. Both cold techniques promoted lower PSFA than both warm techniques.
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Affiliation(s)
- Vinicio Hidemitsu Goto Hirai
- Department of Endodontics, School of Health and Bioscience, Pontifical Catholic University of Paraná, Curitiba, Paraná, Brazil
| | - Ricardo Machado
- Clinical Practice Limited to Endodontics, Navegantes, Santa Catarina, Brazil
| | - Maria Carolina Lucato Budziak
- Department of Endodontics, School of Health and Bioscience, Pontifical Catholic University of Paraná, Curitiba, Paraná, Brazil
| | - Lucila Piasecki
- Department of Periodontics and Endodontics, University at Buffalo, Buffalo, New York, United States
| | - Alexandre Kowalczuck
- Department of Endodontics, School of Health and Bioscience, Pontifical Catholic University of Paraná, Curitiba, Paraná, Brazil
| | - Ulisses Xavier da Silva Neto
- Department of Endodontics, School of Health and Bioscience, Pontifical Catholic University of Paraná, Curitiba, Paraná, Brazil
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Effectiveness of a reciprocating single file, single cone endodontic treatment approach: a randomized controlled pragmatic clinical trial. Clin Oral Investig 2019; 24:2247-2257. [PMID: 31650315 DOI: 10.1007/s00784-019-03077-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 09/13/2019] [Indexed: 12/21/2022]
Abstract
OBJECTIVES To compare the root filling quality, the sealer extrusion, and the healing rates of apical lesions addressed via two endodontic treatment approaches. The hypothesis tested was that both techniques present similar apical periodontitis healing results. MATERIALS AND METHODS This study was a parallel-design, pragmatic, and randomized clinical trial. One hundred twenty anterior teeth with necrotic pulps and apical periodontitis were randomly allocated to be either instrumented with hand files and obturated with the lateral compaction technique or instrumented with a single file in a reciprocating movement and obturated with a single-cone technique. The root canal filling quality, the occurrence of sealer extrusion, and apical periodontitis healing were the outcomes of interest. Data were analyzed through chi-square analysis, and the odds ratio for healing was adjusted using a logistic regression model (α = 0.05). RESULTS No significant differences were observed between the endodontic techniques regarding the root filling quality or sealer extrusion. Six months after treatment, both endodontic techniques presented equivalent results regarding apical periodontitis healing. The healing rate was affected only by the periapical status at baseline. CONCLUSIONS The obturation of the root canal of the anterior teeth using reciprocating file-matched single cones presented a similar quality to that obtained with manual instrumentation followed by the lateral condensation technique. Similar healing rates of apical lesions were also observed. CLINICAL RELEVANCE For treating anterior teeth with apical periodontitis, a reciprocating single-file, single-treatment protocol was as effective as a traditional protocol combining hand instrumentation and the lateral compaction obturation technique.
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16
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Macedo LMDD, Silva-Sousa Y, Silva SRCD, Baratto SSP, Baratto-Filho F, Abi Rached-Júnior FJ. Influence of Root Canal Filling Techniques on Sealer Penetration and Bond Strength to Dentin. Braz Dent J 2018; 28:380-384. [PMID: 29297560 DOI: 10.1590/0103-6440201602460] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Accepted: 06/06/2017] [Indexed: 11/21/2022] Open
Abstract
The influence of root canal filling techniques on the penetration of AH Plus into dentinal tubules was evaluated using confocal laser scanning microscopy (CLSM) and the impact on the bond strength of the filling material on the root dentin was evaluated using the push-out test. Roots of the maxillary central incisors (n=40) were prepared with ProTaper Universal and assigned to four groups: lateral condensation, vertical compaction, modified Tagger hybrid and single cone. After root canal filling with gutta-percha and AH Plus, along with the addition of 0.01% fluorescein, the roots were cut into 2-mm slices. CLSM was performed on the first slice of each root third, followed by the push-out test. The second slice was analyzed under SEM. ANOVA demonstrated a statistically significant difference between the root canal filling techniques and the root thirds (p<0.05). For percent penetration, Tukey's test showed that the vertical compaction (91.77±13.51), lateral condensation (89.18±10.91) and modified Tagger hybrid (87.53±15.42) presented the highest values, which significantly differed (p<0.05) from those of the single cone (78.19±22.46). For bond strength (MPa), lateral condensation (3.42±0.54) and vertical compaction (3.47±0.53) had the highest values (p<0.05), while the modified Tagger hybrid (2.19±0.41) and single cone (0.54±0.21) had the lowest. In conclusion, the lateral condensation, vertical compaction and Modified Tagger's hybrid techniques resulted in greater penetration and bond strength to the intra-radicular dentin.
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Affiliation(s)
| | - Yara Silva-Sousa
- School of Dentistry, UNAERP - Universidade de Ribeirão Preto, Ribeirão Preto, SP, Brazil
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17
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Haupt F, Seidel M, Rizk M, Sydow HG, Wiegand A, Rödig T. Diameter and Taper Variability of Single-file Instrumentation Systems and Their Corresponding Gutta-percha Cones. J Endod 2018; 44:1436-1441. [PMID: 30078573 DOI: 10.1016/j.joen.2018.06.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 06/05/2018] [Accepted: 06/07/2018] [Indexed: 10/28/2022]
Abstract
INTRODUCTION Manufacturers offer single-file instrumentation systems with matching gutta-percha (GP) cones to simplify root canal preparation and obturation. The purpose of this study was to determine whether file diameters and tapers match with corresponding cone diameters and tapers (precision) as well as industry standards (accuracy). METHODS Twenty files and corresponding GP cones from each size of F360 (#25, #35, #45, #55 with .04 taper) and Reciproc (#25, #40, #50 with variable tapers) instruments were examined by using optical microscopy (×32) to determine their diameter and taper. Precision was evaluated by using one-way analysis of variance (α = 0.05) with Scheffé post hoc tests and t tests with Bonferroni correction. Accuracy was calculated by subtracting the nominal values from the measured values of all files and GP cones, and mean diameter and taper differences were compared by using one-way analysis of variance (α = 0.05) and Scheffé post hoc test for pairwise comparison. RESULTS For F360, the majority of file and cone diameters were within the tolerance levels, but most of the file diameters were significantly larger than GP cone diameters (P < .05), but the majority of all measured values were within the tolerance levels. For Reciproc, file and cone diameters at D1 and D3 mostly approached the nominal values. At the coronal end, file diameters #25 and #50 were significantly smaller than cone diameters (P < .05). For both instrumentation systems, almost all file and cone tapers matched with the preset tolerance ranges. For Reciproc, significant differences between file and GP cone demonstrated either smaller cone or smaller file diameters and tapers, depending on the size. Most of the measured values were within the acceptable range, but diameters at the coronal end exhibited the highest percent difference from the nominal values. CONCLUSIONS Despite the call for standardization, variability in diameter and taper dimensions between single-file instrumentation systems and their corresponding GP cones can be expected.
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Affiliation(s)
- Franziska Haupt
- Department for Preventive Dentistry, Periodontology and Cariology, University Medical Center, Göttingen, Germany.
| | - Miriam Seidel
- Department for Preventive Dentistry, Periodontology and Cariology, University Medical Center, Göttingen, Germany
| | - Marta Rizk
- Department for Preventive Dentistry, Periodontology and Cariology, University Medical Center, Göttingen, Germany
| | - Hans-Georg Sydow
- Institute of Anatomy and Embryology, University Medical Center, Göttingen, Germany
| | - Annette Wiegand
- Department for Preventive Dentistry, Periodontology and Cariology, University Medical Center, Göttingen, Germany
| | - Tina Rödig
- Department for Preventive Dentistry, Periodontology and Cariology, University Medical Center, Göttingen, Germany
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18
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Jeon SJ, Moon YM, Seo MS. Quantification of the tug-back by measuring the pulling force and micro computed tomographic evaluation. Restor Dent Endod 2017; 42:273-281. [PMID: 29142875 PMCID: PMC5682143 DOI: 10.5395/rde.2017.42.4.273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 07/23/2017] [Indexed: 11/30/2022] Open
Abstract
Objectives The aims of this study were to quantify tug-back by measuring the pulling force and investigate the correlation of clinical tug-back pulling force with in vitro gutta-percha (GP) cone adaptation score using micro-computed tomography (µCT). Materials and Methods Twenty-eight roots from human single-rooted teeth were divided into 2 groups. In the ProTaper Next (PTN) group, root canals were prepared with PTN, and in the ProFile (PF) group, root canals were prepared using PF (n = 14). The degree of tug-back was scored after selecting taper-matched GP cones. A novel method using a spring balance was designed to quantify the tug-back by measuring the pulling force. The correlation between tug-back scores, pulling force, and percentage of the gutta-percha occupied area (pGPOA) within apical 3 mm was investigated using µCT. The data were analyzed using Pearson's correlation analysis, one-way analysis of variance (ANOVA) and Tukey's test. Results Specimens with a strong tug-back had a mean pulling force of 1.24 N (range, 0.15–1.70 N). This study showed a positive correlation between tug-back score, pulling force, and pGPOA. However, there was no significant difference in these factors between the PTN and PF groups. Regardless of the groups, pGPOA and pulling force were significantly higher in the specimens with a higher tug-back score (p < 0.05). Conclusions The degree of subjective tug-back was a definitive determinant for master cone adaptation in the root canal. The use of the tug-back scoring system and pulling force allows the interpretation of subjective tug-back in a more objective and quantitative manner.
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Affiliation(s)
- Su-Jin Jeon
- Department of Conservative Dentistry, Wonkwang University Daejeon Dental Hospital, Daejeon, Korea
| | - Young-Mi Moon
- Department of Conservative Dentistry, Wonkwang University Daejeon Dental Hospital, Daejeon, Korea
| | - Min-Seock Seo
- Department of Conservative Dentistry, Wonkwang University Daejeon Dental Hospital, Daejeon, Korea
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19
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Saberi E, Zahedani SS, Ebrahimipour S, Valian N. Comparison of Coronal Leakage in Tooth Preparation with Two Single File Systems and Three Obturation Techniques. J Int Soc Prev Community Dent 2017; 7:S82-S87. [PMID: 29184833 PMCID: PMC5682709 DOI: 10.4103/jispcd.jispcd_205_17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 08/24/2017] [Indexed: 12/02/2022] Open
Abstract
Aims and Objectives: Root canal preparation and obturation are of great importance in endodontics. Its purpose is to eliminate pulpal and periradicular disease. The aim of this study was to compare coronal bacterial microleakage in prepared root canals using Neoniti A1 and Reciproc files that obturated with lateral compaction, single cone gutta-percha, and hybrid (tapered cone/lateral compaction) methods. Materials and Methods: In this ex vivo study, a total of 110 single-rooted mandibular first premolars were choose and randomly divided into two study groups A and B (each 45) that one group was prepared with Reciproc and another with Neoniti A1 and negative and positive control groups (each 10). Each group divided into three subgroups of 15 each and obturated using a single cone, lateral compaction, and hybrid (tapered cone/lateral compaction) techniques. For evaluation of coronal leakage, “two-chamber setup” was used. The solution of enterococcus faecalis culture was injected in the upper chamber and incubated. If the bacteria pass through the canal and obturation materials, the lower chamber becomes turbid. TSB medium in the lower chamber (apex) were investigated every day in terms of occurrence of turbidity, and the duration of occurrence of leakage was recorded. The data were analyzed using Chi-square test. Results: Data analysis showed that in each group the difference in percentages between subgroups was statistically significant (P = 0.003). So that the highest and the lowest amount of leakage in both groups were related to lateral compaction and hybrid techniques, respectively. Conclusion: Under the conditions of this study, independent of the instrument used for canal preparation, hybrid method and then single-cone technique, however, were more effective in the prevention of coronal leakage than lateral condensation technique.
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Affiliation(s)
- Eshaghali Saberi
- Department of Endodontics, Oral and Dental Diseases Research Center, Dental School, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Shahram Shahraki Zahedani
- Infectious Diseases and Tropical Medicine Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Sediqe Ebrahimipour
- Department of Endodontics, Faculty of Dentistry and Dental Research Center, Birjand University of Medical Sciences, Birjand, Iran
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20
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Yilmaz A, Karagoz-Kucukay I. In vitro comparison of gutta-percha-filled area percentages in root canals instrumented and obturated with different techniques. J Istanb Univ Fac Dent 2017; 51:37-42. [PMID: 28955594 PMCID: PMC5573472 DOI: 10.17096/jiufd.95769] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 09/28/2016] [Indexed: 11/30/2022] Open
Abstract
Purpose: To evaluate the efficacy of different obturation techniques in root canals instrumented either by hand or rotary instruments with regard to
the percentage of gutta- percha-filled area (PGFA). Materials and Methods: One hundred and sixty extracted mandibular premolars with single, straight root canals were studied. Root canals were
prepared to an apical size of 30 by hand with a modified crown-down technique or the ProTaper and HEROShaper systems. Teeth were divided into eight groups (n=20)
according to the following instrumentation and obturation techniques: G1: Hand files+lateral condensation (LC), G2: Hand files+Thermafil, G3: ProTaper+LC,
G4: ProTaper+single-cone, G5: ProTaper+ProTaper-Obturator, G6: HEROShaper+LC, G7: HEROShaper+single-cone, G8: HEROShaper+HEROfill. Horizontal sections were cut at
1, 3, 5, 7, 9, 11 and 13 mm from the apical foramen. A total of 1120 sections obtained were digitally photographed under a stereomicroscope set at 48X magnification.
The cross-sectional area of the canal and the gutta-percha was measured by digital image analysis and the PGFA was calculated for each section. Results: The mean of the PGFA in Thermafil (G2), ProTaper-Obturator (G5) and HEROfill (G8) groups was significantly higher than the other groups.
In G3 and G4, PGFA showed no significant difference in the apical segments whereas PGFA was significantly higher at the middle and coronal segments in G3. In G6 and
G7, PGFA showed no significant difference in the apical and middle segments whereas PGFA was significantly higher at the coronal segments in G6. Conclusion: The carrier-based gutta-percha obturation systems revealed significantly higher PGFA in comparison to single-cone and lateral
condensation techniques.
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Affiliation(s)
- Ayca Yilmaz
- Department of Endodontics Faculty of Dentistry Istanbul University Turkey
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21
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Özkurt-Kayahan Z, Barut G, Ulusoy Z, Oruçoğlu H, Kayahan MB, Kazazoğlu E, Haznedaroğlu F. Influence of Post Space Preparation on the Apical Leakage of Calamus, Single-Cone and Cold Lateral Condensation Obturation Techniques: A Computerized Fluid Filtration Study. J Prosthodont 2017; 28:587-591. [PMID: 28387992 DOI: 10.1111/jopr.12623] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/11/2017] [Indexed: 12/01/2022] Open
Abstract
PURPOSE Apical microleakage between the root canal and periapical tissues is considered a common cause of endodontic failure. The aim of this study was to evaluate the apical microleakage of various obturation techniques after immediate post space preparations with different drills. MATERIALS AND METHODS One hundred twenty human single-rooted teeth were selected for this study. The coronal portions were removed to achieve a uniform length of 15 mm. All root canals were instrumented with ProTaper Next rotary files using crown-down technique. The 120 roots were randomly assigned to 3 experimental groups according to obturation technique (n = 40). The root canals were obturated with lateral condensation in group 1, single-cone technique in group 2, and Calamus 3D obturation system in group 3. Each group was divided into two subgroups (n = 20) according to drill types (Gates Glidden and Peeso drills) leaving 5 mm of apical gutta-percha. The apical microleakage was measured using the computerized fluid filtration meter method. The results were evaluated using Kruskal-Wallis test with Bonferroni Corrected Mann-Whitney U multiple comparison post hoc tests. RESULTS There was no statistically significant difference between obturation techniques after post space preparation with Peeso drills (p > 0.05). In Gates Glidden drill groups, single-cone technique demonstrated higher leakage (0.0051 ± 0.0037 μl x min-1 × cmH2 O-1 ) than Calamus techniques (0.0019 ± 0.0012 μl x min-1 × cmH2 O-1 ) (p < 0.017). CONCLUSIONS Gates Glidden drills caused the highest apical leakage in teeth obturated with single-cone technique.
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Affiliation(s)
- Zeynep Özkurt-Kayahan
- Department of Prosthodontics, Faculty of Dentistry, Yeditepe University, Istanbul, Turkey
| | - Güher Barut
- Department of Endodontics, Faculty of Dentistry, Yeditepe University, Istanbul, Turkey
| | - Zuhal Ulusoy
- Department of Endodontics, Faculty of Dentistry, Abant İzzet Baysal University, Bolu, Turkey
| | - Hasan Oruçoğlu
- Department of Endodontics, Faculty of Dentistry, Abant İzzet Baysal University, Bolu, Turkey
| | | | - Ender Kazazoğlu
- Department of Prosthodontics, Faculty of Dentistry, Yeditepe University, Istanbul, Turkey
| | - Faruk Haznedaroğlu
- Department of Endodontics, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
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22
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Donnelly A, Coffey D, Duncan HF. A re-audit of the technical quality of undergraduate root canal treatment after the introduction of new technology and teaching practices. Int Endod J 2016; 50:941-950. [PMID: 27917512 DOI: 10.1111/iej.12727] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Accepted: 11/28/2016] [Indexed: 10/20/2022]
Abstract
AIM To revaluate through re-audit the technical quality of undergraduate nonsurgical root canal treatment (RCTx) in a dental teaching hospital as a result of recommended changes to teaching practices. METHODOLOGY The technical quality of undergraduate RCTx was evaluated radiographically after educational changes and the mandatory introduction of new technologies (nickel-titanium files, apex locators, greater taper gutta-percha points) in 182 root canals. Evaluation was based on four criteria: presence of voids, root canal filling termination (0-2 mm of radiographic apex), all roots filled and the prepared canal contained the original anatomy. Chi-squared analysis was used to determine statistically significant improvements in quality between the respective audits (P < 0.05). RESULTS Twenty-three of the 40 canals in single-rooted teeth (57.5%) and 68 of the 129 (52.7%) canals in multirooted teeth analysed had an acceptable root filling. This compared with 48% of canals in single-rooted teeth and 38% of canals in multirooted teeth in the original audit. Specifically, the frequency of root canal voids and unsatisfactory apical root filling termination were reduced in multirooted teeth by 23% and 14% and in single-rooted teeth by 11% and 12%, respectively, compared with the original audit. When multirooted teeth were taken as one unit, 45.2% were considered to be acceptable, significantly better than the 18.8% multirooted teeth in the original audit (P = 0.042). Deviations from the canal anatomy on radiographic examination were rare findings in both audits. CONCLUSIONS Changes to endodontic teaching practices significantly improved the technical standards of undergraduate root filling in multirooted teeth. The regular auditing of undergraduate teaching practice is necessary to inform current teaching, instigate change and improve standards.
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Affiliation(s)
- A Donnelly
- Division of Restorative Dentistry and Periodontology, Dublin Dental University Hospital, Trinity College Dublin, Dublin, Ireland
| | - D Coffey
- Division of Restorative Dentistry and Periodontology, Dublin Dental University Hospital, Trinity College Dublin, Dublin, Ireland
| | - H F Duncan
- Division of Restorative Dentistry and Periodontology, Dublin Dental University Hospital, Trinity College Dublin, Dublin, Ireland
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Technical quality of a matching-taper single-cone filling technique following rotary instrumentation compared with lateral compaction after manual preparation: a retrospective study. Clin Oral Investig 2016; 21:643-652. [PMID: 27522217 DOI: 10.1007/s00784-016-1931-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 08/02/2016] [Indexed: 10/21/2022]
Abstract
OBJECTIVES The objectives of the study were to evaluate the radiographic technical quality of root canal treatment before and after the implementation of a nickel-titanium rotary (NiTiR) preparation followed by a matching-taper single-cone (mSC) obturation and to detect the procedural errors associated with this technique. MATERIALS AND METHODS A random sample of 535 patients received root canal treatment at the Department of Conservative Dentistry and Periodontology at the University of Würzburg: 254 teeth were treated in 2002-2003 by using stainless steel instruments (SSI) for preparation and a lateral compaction (LC) technique (classic group (CG)). Two hundred eighty-one teeth were root filled in 2012-2013 employing NiTiR instruments for the root canal shaping and a mSC technique (advanced group (AG)). The quality assessments were based on the radiographic criteria of the European Society of Endodontology. The presence of voids was recorded separately for the apical, central and cervical thirds of the root canals. Procedural errors, such as ledges, apical transportations, perforations and fractured instruments, were detected. The root canal fillings in the CG and AG were compared using chi-squared and Fisher's exact tests. Multivariable logistic regression was performed to investigate the association between the independent variables (patient age, tooth type and type of treatment) and the dependent variables (density and length). RESULTS Adequate length was achieved significantly more often in the AG compared to the CG for molars (p = 0.017), mandibular teeth (p = 0.013) and primary root canal treatments (p = 0.024). No significant difference was detected between the AG and CG regarding adequate length in general (p = 0.051) or adequate overall quality of root canal filling (p = 0.1). In the AG, a significant decrease in procedural errors was evident (p = 0.019) and decreases in the densities of the root canal fillings in the cervical (p = 0.01) and central (p = 0.01) thirds of the root canals were also observed. Moreover, root canals in elderly patients exhibited fewer voids (p = 0.009). CONCLUSIONS Rotary root canal preparation followed by a matching-taper single-cone filling technique provides a reliable shaping of the root canal, with fewer procedural errors and a more acceptable filling quality in terms of length and homogeneity in the apical third. Less favourable results were achieved in the central and cervical parts of the root canals. CLINICAL RELEVANCE The matching-taper single-cone technique seems to effectively obturate well-tapered root canals after adequate rotary instrumentation. Irregularly shaped canals require additional lateral or warm vertical condensation to avoid voids.
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Min Y, Song Y, Gao Y, Dummer PMH. Theoretical distribution of gutta-percha within root canals filled using cold lateral compaction based on numeric calculus. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY. MEDICAL SCIENCES = HUA ZHONG KE JI DA XUE XUE BAO. YI XUE YING DE WEN BAN = HUAZHONG KEJI DAXUE XUEBAO. YIXUE YINGDEWEN BAN 2016; 36:588-593. [PMID: 27465338 DOI: 10.1007/s11596-016-1630-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 06/22/2016] [Indexed: 06/06/2023]
Abstract
This study aimed to present a new method based on numeric calculus to provide data on the theoretical volume ratio of voids when using the cold lateral compaction technique in canals with various diameters and tapers. Twenty-one simulated mathematical root canal models were created with different tapers and sizes of apical diameter, and were filled with defined sizes of standardized accessory gutta-percha cones. The areas of each master and accessory gutta-percha cone as well as the depth of their insertion into the canals were determined mathematically in Microsoft Excel. When the first accessory gutta-percha cone had been positioned, the residual area of void was measured. The areas of the residual voids were then measured repeatedly upon insertion of additional accessary cones until no more could be inserted in the canal. The volume ratio of voids was calculated through measurement of the volume of the root canal and mass of gutta-percha cones. The theoretical volume ratio of voids was influenced by the taper of canal, the size of apical preparation and the size of accessory gutta-percha cones. Greater apical preparation size and larger taper together with the use of smaller accessory cones reduced the volume ratio of voids in the apical third. The mathematical model provided a precise method to determine the theoretical volume ratio of voids in root-filled canals when using cold lateral compaction.
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Affiliation(s)
- Yi Min
- State Key Laboratory of Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, 430079, China
| | - Ying Song
- State Key Laboratory of Oral Diseases, West China College & Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Yuan Gao
- State Key Laboratory of Oral Diseases, West China College & Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.
| | - Paul M H Dummer
- School of Dentistry, College of Biomedical and Life Sciences, Cardiff University, Cardiff, UK
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Schäfer E, Schrenker C, Zupanc J, Bürklein S. Percentage of Gutta-percha Filled Areas in Canals Obturated with Cross-linked Gutta-percha Core-carrier Systems, Single-Cone and Lateral Compaction Technique. J Endod 2016; 42:294-8. [DOI: 10.1016/j.joen.2015.10.018] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 10/26/2015] [Accepted: 10/28/2015] [Indexed: 11/30/2022]
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Pereira RD, Brito-Júnior M, Leoni GB, Estrela C, de Sousa-Neto MD. Evaluation of bond strength in single-cone fillings of canals with different cross-sections. Int Endod J 2016; 50:177-183. [DOI: 10.1111/iej.12607] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 12/27/2015] [Indexed: 11/27/2022]
Affiliation(s)
- R. D. Pereira
- Department of Restorative Dentistry; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - M. Brito-Júnior
- Department of Dentistry; State University of Montes Claros; Montes Claros Brazil
| | - G. B. Leoni
- Department of Restorative Dentistry; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - C. Estrela
- Department of Endodontics; Federal University of Goiás; Goiânia GO Brazil
| | - M. D. de Sousa-Neto
- Department of Restorative Dentistry; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
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ARAÚJO CCC, BRITO-JÚNIOR M, FARIA-E-SILVA AL, PEREIRA RD, SILVA-SOUSA YT, CRUZ-FILHO AM, SOUSA-NETO MD. Root filling bond strength using reciprocating file-matched single-cones with different sealers. Braz Oral Res 2016; 30:S1806-83242016000100251. [DOI: 10.1590/1807-3107bor-2016.vol30.0053] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 12/02/2015] [Indexed: 11/21/2022] Open
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Mokhtari H, Rahimi S, Forough Reyhani M, Galledar S, Mokhtari Zonouzi HR. Comparison of Push-out Bond Strength of Gutta-percha to Root Canal Dentin in Single-cone and Cold Lateral Compaction Techniques with AH Plus Sealer in Mandibular Premolars. J Dent Res Dent Clin Dent Prospects 2015; 9:221-5. [PMID: 26889358 PMCID: PMC4753030 DOI: 10.15171/joddd.2015.040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Accepted: 07/26/2015] [Indexed: 12/05/2022] Open
Abstract
Background and aims. The single-cone technique has gained some popularity in some European countries. The aim of the present study was to compare the push-out bond strength of gutta-percha to root canal dentin with the single-cone and cold lateral compaction canal obturation techniques. Materials and methods. The root canals of 58 human mandibular premolars were prepared using modified crown-down technique with ProTaper rotary files up to #F3as a master apical file (MAF) and divided randomly into groups A and B based on canal obturation technique. In group A (n = 29) the root canals were obturated with single-cone technique with #F3(30/.09) ProTaper gutta-percha, which was matched with MAF in relation to diameter, taper and manufacturer; in group B (n = 29) the canals were obturated with gutta-percha using cold lateral compaction technique. In both groups AH plus sealer were used. After two weeks of incubation, three 2-mm slices were prepared at a distance of 2 mm from the coronal surface and push-out test was carried out. Data were analyzed with descriptive statistics using independent samples t-test. Results. There were statistically significant differences between two groups. The mean push-out bond strength was higher in group B (lateral compaction technique) compared to group A (single-cone technique; P < 0.05). Conclusion. Use of single-cone technique for obturation of root canals resulted in a lower bond strength compared to cold lateral compaction technique.
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Affiliation(s)
- Hadi Mokhtari
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Assistant Professor, Department of Endodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saeed Rahimi
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Professor, Department of Endodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Forough Reyhani
- Assosiate Professor, Department of Endodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saeedeh Galledar
- Post-graduate Student, Department of Endodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hamid Reza Mokhtari Zonouzi
- Assistant Professor, Department of Endodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
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Martins CV, Leoni GB, Oliveira HF, Arid J, Queiroz AM, Silva LAB, Sousa-Neto MD. Influence of therapeutic cancer radiation on the bond strength of an epoxy- or an MTA-based sealer to root dentine. Int Endod J 2015; 49:1065-1072. [DOI: 10.1111/iej.12556] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 09/23/2015] [Indexed: 01/25/2023]
Affiliation(s)
- C. V. Martins
- Department of Restorative Dentistry; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - G. B. Leoni
- Department of Restorative Dentistry; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - H. F. Oliveira
- Department of Internal Medicine; Faculty of Medicine of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - J. Arid
- Department of Pediatric Dentistry; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - A. M. Queiroz
- Department of Pediatric Dentistry; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - L. A. B. Silva
- Department of Pediatric Dentistry; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - M. D. Sousa-Neto
- Department of Restorative Dentistry; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
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Turker SA, Uzunoğlu E, Sağlam BC. Evaluation of the amount of apically extruded debris during retreatment of root canals filled by different obturation techniques. Niger J Clin Pract 2015; 18:802-6. [DOI: 10.4103/1119-3077.158140] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Yoon H, Baek SH, Kum KY, Kim HC, Moon YM, Fang DY, Lee W. Fitness of Gutta-percha Cones in Curved Root Canals Prepared with Reciprocating Files Correlated with Tug-back Sensation. J Endod 2015; 41:102-5. [DOI: 10.1016/j.joen.2014.09.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 08/12/2014] [Accepted: 09/22/2014] [Indexed: 11/29/2022]
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Capar ID, Ertas H, Ok E, Arslan H. Comparison of single cone obturation performance of different novel nickel-titanium rotary systems. Acta Odontol Scand 2014; 72:537-42. [PMID: 24460041 DOI: 10.3109/00016357.2013.876554] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVES The purpose of this study was to compare several different single-cone obturations in the gutta-percha-filled areas (PGFA), sealer-filled areas (PSFA) and voids, also determining the volumetric characteristics of the tested cones. MATERIALS AND METHODS Curved mesial roots of 120 mandibular molars were instrumented using several different systems (ProTaper Next, Twisted File Adaptive, OneShape, ProTaper Universal, WaveOne and Reciproc) and filled with corresponding single cones. The teeth were then sectioned horizontally at 2, 4, 6 and 8 mm from the apex. The area values of each section were calculated and converted to percentages (PGFA, PSFA and voids) of the total area. To determine volumetric characteristics of the tested cones, 20 gutta-percha points of each tested group were scanned with CBCT using the same parameters. RESULTS The ProTaper Next and WaveOne groups presented the most PGFA and least PSFA. The Twisted File Adaptive group presented the least PGFA and most PSFA (p < 0.05) and the least gutta-percha volume. CONCLUSIONS The Twisted File Adaptive system matched cones had the least volume and the least PGFA in severely curved mesiobuccal canals of mandibular first molars. Single matched cones volume varied.
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Affiliation(s)
- Ismail Davut Capar
- Department of Endodontics, Faculty of Dentistry, İzmir Katip Çelebi University , İzmir , Turkey
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Marinho ACS, Martinho FC, Gonçalves LM, Rabang HRC, Gomes BPFA. Does the Reciproc file remove root canal bacteria and endotoxins as effectively as multifile rotary systems? Int Endod J 2014; 48:542-8. [DOI: 10.1111/iej.12346] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 07/25/2014] [Indexed: 11/30/2022]
Affiliation(s)
- A. C. S. Marinho
- Department of Restorative Dentistry; Endodontics Division; Piracicaba Dental School - State University of Campinas- UNICAMP; Piracicaba SP Brazil
| | - F. C. Martinho
- Department of Restorative Dentistry; Endodontics Division; Piracicaba Dental School - State University of Campinas- UNICAMP; Piracicaba SP Brazil
| | - L. M. Gonçalves
- Postgraduate Program in Dentistry; Ceuma University-UniCEUMA; São Luis MA Brazil
| | - H. R. C. Rabang
- Department of Restorative Dentistry; Endodontics Division; Piracicaba Dental School - State University of Campinas- UNICAMP; Piracicaba SP Brazil
| | - B. P. F. A. Gomes
- Department of Restorative Dentistry; Endodontics Division; Piracicaba Dental School - State University of Campinas- UNICAMP; Piracicaba SP Brazil
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Li GH, Niu LN, Selem LC, Eid AA, Bergeron BE, Chen JH, Pashley DH, Tay FR. Quality of obturation achieved by an endodontic core-carrier system with crosslinked gutta-percha carrier in single-rooted canals. J Dent 2014; 42:1124-34. [PMID: 24769108 DOI: 10.1016/j.jdent.2014.04.008] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 04/12/2014] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVES The present study examined the quality of obturation in root canals obturated by GuttaCore, a gutta-percha-based core-carrier system with a cross-linked thermoset gutta-percha carrier, by comparing the incidence of gaps and voids identified from similar canals obturated by cold lateral compaction or warm vertical compaction. METHODS Thirty single-rooted premolars with oval-shaped canals were shaped and cleaned, and obturated with one of the three obturation techniques (N=10): GuttaCore, warm vertical compaction or cold lateral compaction. Filled canals were scanned with micro-computed tomography (micro-CT); reconstructed images were analysed for the volumetric percentage of gaps and voids at three canal levels (0-4mm, 4-8mm and 8-12mm from working length). The roots were subsequently sectioned at the 4-mm, 8-mm and 12-mm levels for analyses of the percentage of interfacial gaps, and area percentage of interfacial and intracanal voids, using scanning electron microscopy (SEM) to examine negative replicas of root sections. Data were analysed with parametric or non-parametric statistical methods at α=0.05. RESULTS Both micro-CT and SEM data indicated that canals obturated with GuttaCore core-carriers had the lowest incidence of interfacial gaps and voids, although the results were not significantly different from canals obturated by warm vertical compaction. Both the GuttaCore and the warm vertical compaction groups, in turn, had significantly lower incidences of gaps and voids than the cold lateral compaction group. CONCLUSIONS Because of the similarity in obturation quality between GuttaCore and warm vertical compaction, practitioners may find the GuttaCore core-carrier technique a valuable alternative for obturation of oval-shaped canals. CLINICAL SIGNIFICANCE The quality of obturation achieved by GuttaCore in single-rooted canals is not significantly different from that achieved by warm vertical compaction.
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Affiliation(s)
- Guo-Hua Li
- Department of Stomatology, Fuzhou Dongfang Hospital, Fuzhou, China
| | - Li-Na Niu
- State Key Laboratory of Military Stomatology, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, China
| | - Lisa C Selem
- Department of Endodontics, Georgia Regents University, Augusta, GA, USA
| | - Ashraf A Eid
- Department of Dental and Biomedical Material Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Brian E Bergeron
- Department of Endodontics, Georgia Regents University, Augusta, GA, USA
| | - Ji-Hua Chen
- State Key Laboratory of Military Stomatology, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, China.
| | - David H Pashley
- Department of Oral Biology, Georgia Regents University, Augusta, GA, USA
| | - Franklin R Tay
- Department of Endodontics, Georgia Regents University, Augusta, GA, USA.
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Fruchi LDC, Ordinola-Zapata R, Cavenago BC, Hungaro Duarte MA, Bueno CEDS, De Martin AS. Efficacy of reciprocating instruments for removing filling material in curved canals obturated with a single-cone technique: a micro-computed tomographic analysis. J Endod 2014; 40:1000-4. [PMID: 24935552 DOI: 10.1016/j.joen.2013.12.011] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 12/10/2013] [Accepted: 12/13/2013] [Indexed: 10/25/2022]
Abstract
INTRODUCTION The aim of this study was to evaluate the efficacy of nickel-titanium reciprocating instrument techniques and passive ultrasonic irrigation (PUI) for retreatment in curved canals and obturated with correspondent single cones. METHODS Twenty molars were selected with mesial-buccal canals with curvatures between 20° and 40°, and they were instrumented with a Reciproc R25 instrument (VDW, Munich, Germany) in a reciprocating motion and obturated with single cones and AH Plus sealer (Dentsply Maillefer, Ballaigues, Switzerland). The teeth were divided into 2 groups (n = 10) according to the instrument used for the removal of filling material: group 1: Reciproc R25 instrument and group 2: WaveOne Primary instrument (Dentsply Maillefer). The analysis of the remnant filling material was made through micro-computed tomographic imaging after the use of reciprocating instruments and again after the use of PUI with xylene. The effective time of retreatment was registered. RESULTS The filling material of the root canal was efficiently removed (P < .05) for both groups. The percentage of removal of filling materials was 93% for the Reciproc group and 92% for the WaveOne group. There were no statistical significant differences (P > .05) between the groups in relation to the removal of filling material ability and the time needed for the procedure. The effective time for the removal of filling material was 78.7 seconds and 89.5 seconds for the Reciproc and WaveOne groups, respectively. CONCLUSIONS It was concluded that both instruments efficiently but not completely removed the filling material from inside the root canals. The use of xylene with PUI increased the removal of filling material a little, but it was not statically significant.
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Affiliation(s)
- Lincoln de Campos Fruchi
- Postgraduate Program in Endodontics, São Leopoldo Mandic Dental Research Center, Campinas, São Paulo, Brazil.
| | - Ronald Ordinola-Zapata
- Department of Endodontics, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil
| | - Bruno Cavalini Cavenago
- Department of Endodontics, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil
| | | | | | - Alexandre Sigrist De Martin
- Postgraduate Program in Endodontics, São Leopoldo Mandic Dental Research Center, Campinas, São Paulo, Brazil
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Quality of canal obturation assessed by micro-computed tomography: Influence of filling technique and post placement in canals shaped with Reciproc. GIORNALE ITALIANO DI ENDODONZIA 2013. [DOI: 10.1016/j.gien.2013.09.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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