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Cecagno FL, De Martin AS, Fontana CE, Cavenago BC, Nascimento WM, Limoeiro AGDS, Bueno CEDS. Evaluation of the Ability of 3 Reciprocating Instruments to Remove Obturation Material: A Micro-Computed Tomography Study. J Endod 2024; 50:376-380. [PMID: 38147908 DOI: 10.1016/j.joen.2023.12.004] [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: 10/16/2023] [Revised: 12/11/2023] [Accepted: 12/18/2023] [Indexed: 12/28/2023]
Abstract
INTRODUCTION The purpose of this study was to evaluate the ability of the Reciproc, Reciproc Blue, and WaveOne Gold systems to remove filling material during endodontic retreatment of extracted human mandibular premolars. METHODS Thirty-nine teeth were instrumented with the Protaper Universal System to the F3 file and filled with the Tagger hybrid technique using an F3 gutta-percha cone and AH Plus cement. At the end of this period, the teeth were scanned with micro-computed tomography before and after removal of the filling material from the root canals. The teeth were divided into 3 groups (n = 13) based on the apical volume, depending on the systems used to remove the filling material. Group GR: Reciproc 40/.06; Group GRB: Reciproc Blue 40/.06; and Group GWG: WaveOne Gold 35/.06. The results were statistically analyzed using the tests of Kruskal-Wallis, Duncan, and analysis of variance at a significance level of 5%. RESULTS The results showed that there were no significant differences between the amounts of filling material removed, either for the apical and middle regions alone or in the overall evaluation for the 3 groups (P = .97). The time evaluation statistically showed that the GR and GWG groups required less time to clean the root canals than the GRB group. CONCLUSIONS Reciproc R40 files and WaveOne Gold Medium files required less time for endodontic treatment than Reciproc Blue R40 files. There was no difference in the ability to remove obturation material between the 3 instruments. No instrument was able to completely remove the filling material from the root canals.
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Affiliation(s)
- Fábio Luiz Cecagno
- Departament of Endodontics, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Campinas, São Paulo, Brazil
| | - Alexandre Sigrist De Martin
- Departament of Endodontics, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Campinas, São Paulo, Brazil
| | - Carlos Eduardo Fontana
- PUC Campinas, Center of Life Sciences, Programa de pós-graduação em Ciências da Saúde, Campinas, São Paulo, Brazil
| | | | - Wayne Martins Nascimento
- Departament of Endodontics, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Campinas, São Paulo, Brazil
| | - Ana Grasiela da Silva Limoeiro
- Departament of Endodontics, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Campinas, São Paulo, Brazil
| | - Carlos Eduardo da Silveira Bueno
- Departament of Endodontics, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Campinas, São Paulo, Brazil.
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Kiraz G, Kaya BÜ, Ocak M, Uzuner MB, Çelik HH. Micro-CT evaluation of the removal of root fillings using rotary and reciprocating systems supplemented by XP-Endo Finisher, the Self-Adjusting File, or Er,Cr:YSGG laser. Restor Dent Endod 2023; 48:e36. [PMID: 38053777 PMCID: PMC10695726 DOI: 10.5395/rde.2023.48.e36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/26/2023] [Accepted: 07/27/2023] [Indexed: 12/07/2023] Open
Abstract
Objectives This study aimed to compare the effectiveness of a single-file reciprocating system (WaveOne Gold, WOG) and a multi-file rotary system (ProTaper Universal Retreatment, PTUR) in removing canal filling from severely curved canals and to evaluate the possible adjunctive effects of XP-Endo Finisher (XPF), the Self-Adjusting File (SAF), and an erbium, chromium: yttrium, scandium, gallium garnet (Er,Cr:YSGG) laser using micro-computed tomography (μCT). Materials and Methods Sixty-six curved mandibular molars were divided into 2 groups based on the retreatment technique and then into 3 based on the supplementary method. The residual filling volumes and root canals were evaluated with μCT before and after retreatment, and after the supplementary steps. The data were statistically analyzed with the t-test, Mann-Whitney U test, analysis of covariance, and factorial analysis of variance (p < 0.05). Results PTUR and WOG showed no significant difference in removing filling materials (p > 0.05). The supplementary techniques were significantly more effective than reciprocating or rotary systems only (p < 0.01). The supplementary steps showed no significant differences in canal filling removal effectiveness (p > 0.05), but XPF showed less dentin reduction than the SAF and Er,Cr:YSGG laser (p < 0.01). Conclusions The supplementary methods significantly decreased the volume of residual filling materials. XPF caused minimal changes in root canal volume and might be preferred for retreatment in curved root canals. Supplementary approaches after retreatment procedures may improve root canal cleanliness.
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Affiliation(s)
- Gülsen Kiraz
- Department of Endodontics, Faculty of Dentistry, Kutahya Health Sciences University, Kutahya, Turkey
| | - Bulem Üreyen Kaya
- Department of Endodontics, Faculty of Dentistry, Suleyman Demirel University, Isparta, Turkey
| | - Mert Ocak
- Department of Anatomy, Faculty of Dentistry, Ankara University, Ankara, Turkey
| | - Muhammet Bora Uzuner
- Department of Anatomy, Faculty of Medicine, Bandırma Onyedi Eylül University, Balıkesir, Turkey
| | - Hakan Hamdi Çelik
- Department of Anatomy, Faculty of Medicine, Hacettepe University, Ankara, Turkey
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Da Silva V, Loroño G, Valencia de Pablo O, Estevez R, Conde AJ, Rossi-Fedele G, Cisneros R. The supplementary use of XP-endo Finisher R after Reciproc enhances the removal of a bioceramic sealer in oval root canals. AUST ENDOD J 2023; 49 Suppl 1:156-161. [PMID: 36282012 DOI: 10.1111/aej.12705] [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: 06/07/2021] [Revised: 02/05/2022] [Accepted: 10/12/2022] [Indexed: 11/26/2022]
Abstract
This study compared the performance of Reciproc and Reciproc Blue endodontic files in retreatment time and re-establishment of apical patency, plus removal of a bioceramic sealer from the canal surface with the supplementary use of the XP-endo Finisher R. Following preparation, slightly curved oval root canals in mandibular incisors were filled using a corresponding gutta-percha point and a bioceramic sealer. Apical patency achievement was assessed and the time required to reach the original working length was recorded. The samples were split longitudinally and were photographed to assess the material remaining on the canal walls. No significant differences were observed regarding patency achievement or retreatment times when comparing Reciproc and Reciproc Blue. Significant less material remained on the canal walls when Reciproc was followed by XP-endo compared with Reciproc alone, and when the data for Reciproc and Reciproc Blue were pooled.
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Affiliation(s)
- Vanessa Da Silva
- Postgraduate Program in Endodontics, European University of Madrid, Madrid, Spain
| | - Gaizka Loroño
- Postgraduate Program in Endodontics, European University of Madrid, Madrid, Spain
| | | | - Roberto Estevez
- Postgraduate Program in Endodontics, European University of Madrid, Madrid, Spain
| | - Antonio J Conde
- Postgraduate Program in Endodontics, European University of Madrid, Madrid, Spain
| | - Giampiero Rossi-Fedele
- Adelaide Dental School, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, South Australia, Australia
| | - Rafael Cisneros
- Postgraduate Program in Endodontics, European University of Madrid, Madrid, Spain
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Costa PM, Leal RMDS, Yamanari GH, Cavenago BC, Duarte MAH. Effectiveness of endodontic retreatment using WaveOne Primary files in reciprocating and rotary motions. Restor Dent Endod 2023; 48:e15. [PMID: 37284343 PMCID: PMC10240093 DOI: 10.5395/rde.2023.48.e15] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 02/19/2023] [Accepted: 03/07/2023] [Indexed: 06/08/2023] Open
Abstract
Objectives This study evaluated the efficiency of WaveOne Primary files (Dentsply Sirona) for removing root canal fillings with 2 types of movement: reciprocating (RCP) and continuous counterclockwise rotation (CCR). Materials and Methods Twenty mandibular incisors were prepared with a RCP instrument (25.08) and filled using the Tagger hybrid obturation technique. The teeth were retreated with a WaveOne Primary file and randomly allocated to 2 experimental retreatment groups (n = 10) according to movement type: RCP and CCR. The root canals were emptied of filling material in the first 3 steps of insertion, until reaching the working length. The timing of retreatment and procedure errors were recorded for all samples. The specimens were scanned before and after the retreatment procedure with micro-computed tomography to calculate the percentage and volume (mm3) of the residual filling material. The results were statistically evaluated using paired and independent t-tests, with a significance level set at 5%. Results No significant difference was found in the timing of filling removal between the groups, with a mean of 322 seconds (RCP) and 327 seconds (CCR) (p < 0.05). There were 6 instrument fractures: 1 in a RCP motion file and 5 in continuous rotation files. The volumes of residual filling material were similar (9.94% for RCP and 15.94% for CCR; p > 0.05). Conclusions The WaveOne Primary files used in retreatment performed similarly in both RCP and CCR movements. Neither movement type completely removed the obturation material, but the RCP movement provided greater safety.
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Affiliation(s)
- Patricia Marton Costa
- Department of Dentistry, Santa Fé do Sul Municipal Foundation of Education and Culture – UNIFUNEC, Santa Fé do Sul, SP, Brazil
| | | | - Guilherme Hiroshi Yamanari
- Department of Dentistry, Santa Fé do Sul Municipal Foundation of Education and Culture – UNIFUNEC, Santa Fé do Sul, SP, Brazil
| | | | - Marco Antônio Húngaro Duarte
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
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Zaccaro-Scelza MF, Martinez RLCH, Tavares SO, Gonçalves FP, Montagnana M, Silva EJNLD, Scelza P. Noncontact 3D evaluation of surface topography of reciprocating instruments after retreatment procedures. Braz Dent J 2022; 33:38-46. [PMID: 35766715 PMCID: PMC9645204 DOI: 10.1590/0103-6440202204876] [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] [Received: 01/22/2022] [Accepted: 03/08/2022] [Indexed: 12/03/2022] Open
Abstract
This study evaluated the Reciproc R25 and Pro-R 25 instruments in unused
condition, after one and a second use in endodontic retreatment employing a
noncontact 3D light interferometer profiler, scanning electron microscopy (SEM)
and cyclic fatigue tests. Twenty single-root teeth were instrumented with
Reciproc R25 and filled with gutta-percha and sealer. A 3D profiler with a 20x
objective using the Mx™ software was used to evaluate the cutting blade surfaces
of Reciproc R25 and Pro-R 25 (n=5 per group) in unused condition, after the
first and second uses in retreatment procedures. After retreatment, SEM was used
to evaluate the topographic features of the used instruments. Cyclic fatigue
tests were performed to compare new to used instruments. One-way ANOVA followed
by Tukey test was used to compare the tested instruments before and after the
first and second uses. Student t-test was used to compare the different
instruments and for cyclic fatigue evaluation. No significant differences were
observed in the cutting blade surfaces of Reciproc and Pro-R before and after
one and two uses (p>0.05). Reciproc without use showed higher Sa and Sq when
compared to Pro-R without use (p<0.05). No differences were observed between
Reciproc and Pro-R after one and two uses (p>0.05). New and unused Reciproc
showed longer time to fracture than Pro-R instruments (p<0.05), and only
Pro-R showed differences between new and used instruments (p<0.05).
Retreatment procedures with Reciproc and Pro-R did not change the surface
topography of instruments. Reciproc had greater resistance to cyclic fatigue
compared with Pro-R.
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Affiliation(s)
| | | | | | | | | | | | - Pantaleo Scelza
- Geriatric Dentistry Department, Faculty of Dentistry, Universidade Federal Fluminense, Niterói, RJ, Brazil
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Suzuki EH, Sponchiado-Júnior EC, Pandolfo MT, Garcia LDFR, Carvalho FMAD, Marques AAF. Shaping Ability of Reciprocating and Rotary Systems After Root Canal Retreatment: a CBCT Study. Braz Dent J 2022; 33:12-21. [PMID: 35508032 PMCID: PMC9645160 DOI: 10.1590/0103-6440202204772] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 02/25/2022] [Indexed: 11/30/2022] Open
Abstract
The purpose of this in vitro study was to evaluate the shaping ability of
reciprocating and continuous rotary systems after root canal retreatment. After
preparation and root canal filling, mesial canals of 54 mandibular molars were
distributed into 3 groups (n=18), according to the filling material removal and
re-instrumentation protocols: WOG group - WaveOne Gold system; PTN group -
ProTaper Next system; and PTU group - ProTaper Universal system. Cone-beam
computed tomographic (CBCT) images acquisition of the mesial root canals was
performed at different moments: (1) before instrumentation (unprepared root
canals), (2) after preparation and filling, (3) after filling material removal
and (4) re-instrumentation. The apical transportation (AT), centering ability
(CA) and change in root canal diameter were assessed by CBCT analysis. The
remaining filling material quantification was performed by radiographic
examination. The statistical analyses were performed using the 3-way ANOVA,
Tukey-Kramer, Kruskal-Wallis and Dunn multiple Comparison tests (p<0.05). The
tested instruments did not show full CA (=1.0). PTN group had greater AT at the
5th mm in comparison with the WOG group (p<0.05). After re-instrumentation,
WOG group had greater root canal diameter change at the 1st and 5th mm than PTN
and PTU groups (p<0.05). There was no significant difference among groups
when comparing the amount of remaining filling material after re-instrumentation
(p>0.05). The tested systems provided minimal alteration in root canal
morphology at the apical portion after root canal retreatment. However, WOG
promoted greater change in root canal diameter.
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Ruivo LM, Rios MDA, Villela AM, de Martin AS, Kato AS, Pelegrine RA, Barbosa AFA, Silva EJNL, Bueno CEDS. Fracture incidence of Reciproc instruments during root canal retreatment performed by postgraduate students: a cross-sectional retrospective clinical study. Restor Dent Endod 2021; 46:e49. [PMID: 34909413 PMCID: PMC8636080 DOI: 10.5395/rde.2021.46.e49] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 02/18/2021] [Accepted: 02/21/2021] [Indexed: 11/29/2022] Open
Abstract
Objectives To evaluate the fracture incidence of Reciproc R25 instruments (VDW) used during non-surgical root canal retreatments performed by students in a postgraduate endodontic program. Materials and Methods From the analysis of clinical record cards and periapical radiographs of root canal retreatments performed by postgraduate students using the Reciproc R25, a total of 1,016 teeth (2,544 root canals) were selected. The instruments were discarded after a single use. The general incidence of instrument fractures and its frequency was analyzed considering the group of teeth and the root thirds where the fractures occurred. Statistical analysis was performed using the χ2 test (p < 0.01). Results Seven instruments were separated during the procedures. The percentage of fracture in relation to the number of instrumented canals was 0.27% and 0.68% in relation to the number of instrumented teeth. Four fractures occurred in maxillary molars, 1 in a mandibular molar, 1 in a mandibular premolar and 1 in a maxillary incisor. A greater number of fractures was observed in molars when compared with the number of fractures observed in the other dental groups (p < 0.01). Considering all of the instrument fractures, 71.43% were located in the apical third and 28.57% in the middle third (p < 0.01). One instrument fragment was removed, one bypassed, while in 5 cases, the instrument fragment remained inside the root canal. Conclusions The use of Reciproc R25 instruments in root canal retreatments carried out by postgraduate students was associated with a low incidence of fractures.
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Affiliation(s)
- Liliana Machado Ruivo
- Department of Endodontics, São Leopoldo Mandic Dental Research Center, Campinas, SP, Brazil
| | - Marcos de Azevedo Rios
- Department of Endodontics, Universidade Estadual de Feira de Santana, Feira de Santana, BA, Brazil
| | | | | | - Augusto Shoji Kato
- Department of Restorative Dentistry, Endodontics and Dental Materials, Bauru Dental School, University of São Paulo, Bauru, SP, Brazil
| | - Rina Andrea Pelegrine
- Department of Endodontics, São Leopoldo Mandic Dental Research Center, Campinas, SP, Brazil
| | | | - Emmanuel João Nogueira Leal Silva
- Department of Endodontics, Rio de Janeiro State University (UERJ), Rio de Janeiro, RJ, Brazil.,Department of Endodontic, Grande Rio University (UNIGRANRIO), Rio de Janeiro, RJ, Brazil
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Bis BM, Silva-Sousa YTC, Macedo LMDD, Oliveira OP, Alfredo E, Leoni GB, Rached-Junior FJA. Removal of filling material using rotating or reciprocating systems with or without solvent: microCT analysis. Braz Oral Res 2021; 35:e117. [PMID: 34816905 DOI: 10.1590/1807-3107bor-2021.vol35.0117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 06/02/2021] [Indexed: 11/22/2022] Open
Abstract
This study evaluated by the efficacy of rotary and reciprocating systems to remove filling material by micro-CT. Sixty human canines were instrumented up to F3 by ProTaper Universal system and filled with AH Plus/ gutta-percha. Specimens were submitted to 1,200 thermal cycles, scanned by microCT SkyScan 1176 and randomly distributed in groups according to the filling material removal protocol (n = 10): ProTaper Universal, ProTaper Universal/xylol, ProTaper Next, ProTaper Next/xylol, Reciproc and Reciproc/xylol. After filling removal, specimens were analyzed by microCT to separately verify the presence of gutta-percha and sealer remnants. The data (mm3) were analyzed by two way ANOVA and Tukey´s test (5%). For the remaining gutta-percha, the use of xylol provided the highest values for Reciproc (7.60 ± 0.73), which was statistically different from the other groups (p < 0.05) that presented lower values and were statistically similar to each other (p > 0.05). For the remaining sealer, xylol provided the highest values (21.25 ± 6.94) different (p < 0.05) from the use of instruments alone (11.47 ± 9.45). ProTaper Next presented the lowest values (8.16 ± 1.37) for the remaining sealer, different (p < 0.05) from that of Reciproc (24.67 ± 6.32). The qualitative analysis revealed that all groups presented some remaining root filling material, with the highest volumes presented by Reciproc and Reciproc/xylol. In conclusion the rotary systems provided greater removal of filling material regardless of the use of xylol. The use of xylol negatively interfered with the action of the reciprocating system in the removal of the gutta-percha and sealer.
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Affiliation(s)
- Bárbara Maria Bis
- Universidade de Ribeirão Preto, School of Dentistry, Department of Endodontics, Ribeirão Preto, SP, Brazil
| | | | | | - Orestes Pereira Oliveira
- Universidade de Ribeirão Preto, School of Dentistry, Department of Endodontics, Ribeirão Preto, SP, Brazil
| | - Edson Alfredo
- Universidade de Ribeirão Preto, School of Dentistry, Department of Endodontics, Ribeirão Preto, SP, Brazil
| | - Graziela Bianchi Leoni
- Universidade de Ribeirão Preto, School of Dentistry, Department of Endodontics, Ribeirão Preto, SP, Brazil
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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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Ferreira I, Babo PS, Braga AC, Gomes ME, Pina-Vaz I. Effect of Sonic Agitation of a Binary Mixture of Solvents on Filling Remnants Removal as an Alternative to Apical Enlargement-A Micro-CT Study. J Clin Med 2020; 9:E2465. [PMID: 32752148 PMCID: PMC7464987 DOI: 10.3390/jcm9082465] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 07/24/2020] [Accepted: 07/27/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND This work aimed to evaluate the efficacy of sonic agitation of a binary mixture of solvents (methyl ethyl ketone/tetrachloroethylene) on filling remnants removal and compare the effects of solvent agitation with the enlargement to the next instrument size. METHODS Twenty-four mandibular incisors were prepared with ProTaper Next (X1, X2) and obturated with the single-cone technique and AH Plus sealer. The teeth were retreated with ProTaper Universal Retreatment and ProTaper Next and divided into two groups (n = 12) according to the final instrument (X3 or X4). All canals were submitted to a supplementary procedure consisting of a mixture of solvents-methyl ethyl ketone/tetrachloroethylene, agitated with EndoActivator. The volume of filling remnants was assessed through micro-computed tomography in the apical 5 mm. Statistical analysis was performed with a significance level of 5%. RESULTS The supplementary procedure of agitation of the solvent mixture was beneficial in both groups (p < 0.05). There were no statistically significant differences between canals re-prepared until X4 and canals re-prepared until X3 plus solvent (p > 0.05). CONCLUSIONS An additional step with a two-solvent solution potentiated by EndoActivator showed to be very effective for the removal of gutta-percha and resinous sealer remnants from apical root canals of mandibular incisors, avoiding further enlargement.
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Affiliation(s)
- Inês Ferreira
- Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal
- CINTESIS, Faculty of Dental Medicine, University of Porto, 4200-393 Porto, Portugal
| | - Pedro S. Babo
- 3B’s Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, 4805-017 Guimarães, Portugal; (P.S.B.); (M.E.G.)
- ICVS/3B’s – PT Government Associate Laboratory, 4805-017 Braga/Guimarães, Portugal
| | - Ana Cristina Braga
- Department of Production and Systems, ALGORITMI Center, University of Minho, Campus de Gualtar 4710-057 Braga, Portugal;
| | - Manuela E. Gomes
- 3B’s Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, 4805-017 Guimarães, Portugal; (P.S.B.); (M.E.G.)
- ICVS/3B’s – PT Government Associate Laboratory, 4805-017 Braga/Guimarães, Portugal
| | - Irene Pina-Vaz
- CINTESIS, Faculty of Dental Medicine, University of Porto, 4200-393 Porto, Portugal
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Saricam E, Ince-Yusufoglu S, Ocak M, Geneci F, Celik HH. The retreatment abilities of ProTaper Next and F6 Skytaper: a micro-computed tomography study. Eur Oral Res 2020; 55:74-79. [PMID: 34250473 PMCID: PMC8244941 DOI: 10.26650/eor.20210009] [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: 03/15/2020] [Revised: 08/07/2020] [Accepted: 12/14/2020] [Indexed: 11/20/2022] Open
Abstract
Purpose The aim of this study was to evaluate the retreatment abilities of the ProTaper Next (PTN) and F6 SkyTaper (F6) systems by using micro-computed tomography (microct), radiographic and microscopic imaging techniques. Materials and methods The root canals of twenty-six extracted mandibular premolar teeth were prepared and obturated. For the retreatment procedure, the teeth were randomly divided into two equal groups according to endodontic instruments: PTN (X4) and F6 (#40/.06). Pre- and post-operative filling material volumes were measured with micro-ct, and areas were measured with radiographic and microscopic imaging techniques. The percentages of residual material were calculated, and then statistically compared. The significance level was set at p<0.05. Results There was no statistically significant difference between F6 and PTN for retreatment efficacy in the micro-ct and radiographic imaging techniques (p>0.05). PTN demonstrated better cleaning ability when evaluated by microscopic imaging. (p<0.05). The correlation was moderate between micro-ct and radiographic, and micro-ct and microscopic imaging groups; however, it was strong between radiographic and microscopic imaging methods. Conclusion The PTN and F6 files had similar effects in the removal of filling material with microct evaluation. The radiographic imaging method gave similar results with micro-ct imaging.
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Affiliation(s)
- Esma Saricam
- Department of Endodontics, Faculty of Dentistry, Ankara Yildirim Beyazit University, Ankara, Turkey
| | | | - Mert Ocak
- Department of Anatomy, Faculty of Medicine, Ankara Yildirim Beyazit University, Ankara Turkey
| | - Ferhat Geneci
- Department of Anatomy, Faculty of Medicine, Hacettepe University, Ankara,Turkey
| | - H Hamdi Celik
- Department of Anatomy, Faculty of Medicine, Hacettepe University, Ankara,Turkey
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Arruda EDS, Sponchiado-Júnior EC, Pandolfo MT, Fredson MADC, Roberi Garcia LDF, Marques AAF. Apical Transportation and Centering Ability After Root Canal Filling Removal Using Reciprocating and Continuous Rotary Systems: A CBCT Study. Eur J Dent 2019; 13:613-618. [PMID: 31891978 PMCID: PMC6938415 DOI: 10.1055/s-0039-3399407] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
OBJECTIVE To evaluate the apical transportation and centering ability promoted by reciprocating and continuous rotary systems after root canal filling removal. MATERIALS AND METHODS After obturation, 40 mesial root canals of mandibular molars were distributed into four groups (n = 20) for filling material removal: PTU group-F2 instrument (25.08) of ProTaper Universal system; R25 group-R25 instrument (25.08) of Reciproc system; X2 group-X2 instrument (25.06) of ProTaper Next system and X3 group-X2 instrument (25.06) of ProTaper Next system, followed by X3 instrument (30.07). Cone-beam computed tomographic analysis was performed before and after filling material removal for acquisition of apical images. Apical transportation (AT) and its direction, and centering ability (CA), were assessed using the equations AT = (X1-X2)-(Y1-Y2) and CA = (X1-X2/Y1-Y2 or Y1-Y2/X1-X2), respectively. Data were submitted to the nonparametric Kruskal-Wallis and Dunn multiple comparison tests (p < 0.05) for statistical analysis. RESULTS There was no statistically significant difference among groups for AT (p > 0.05), with a tendency toward transportation in the distal direction. Also, there was no statistically significant difference among groups regarding CA (p > 0.05). CONCLUSIONS The different systems, including ProTaper Next, caused AT within the acceptable clinical limit after filling removal. In addition, none of the tested systems presented adequate CA.
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Affiliation(s)
| | | | - Mariana Travi Pandolfo
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | | | - Lucas da Fonseca Roberi Garcia
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
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Özyürek T, Demiryürek EÖ. Surface deformation of several nickel-titanium rotary instruments after removal of the root canal filling materials: a scanning electron microscope evaluation. Odontology 2019; 108:213-221. [PMID: 31531770 DOI: 10.1007/s10266-019-00454-2] [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: 06/11/2019] [Accepted: 08/27/2019] [Indexed: 10/26/2022]
Abstract
The aim of the present study was to investigate and compare the surface deformations of different NiTi rotary files after retreatment under scanning electron microscope (SEM). A total of 240 upper central incisor teeth were obturated with vertical compaction technique and divided into 6 groups. Root canals were retreated by ProTaper Next (PTN), Twisted File Adaptive (TFA), Reciproc (RPC), ProTaper Universal Retreatment (PTR), R-Endo and Mtwo-R NiTi rotary systems. The files investigated under SEM at different magnifications and photomicrographs were captured. The photomicrographs were classified and scored. Kruskal-Wallis and Dunn tests were performed for statistical analyze at 5% significance level. PTR and RPC groups were free of defects like file separation, curving and unwinding but PTN and TFA groups showed 50% file separation. According to the photomicrographs that were captured at high magnification; there were no statistically difference between groups at the coronal thirds of the files (P > 0.05), at the middle third PTN and TFA groups showed statistically more deformation than the other groups (P < 0.05). At the apical third Reciproc was statistically showed less deformation than the other all groups (P < 0.05). Within the limitation of this in vitro study, all NiTi files showed surface deformation in SEM observation after retreatment procedures. There was less deformation in PTR and RPC groups according to other.
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Affiliation(s)
- Taha Özyürek
- Department of Endodontics, Istanbul Medeniyet University, Faculty of Dentistry, Fatih Mahallesi, Eski Ankara Asfalti, 34956, Tuzla, Istanbul, Turkey.
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Kim K, Kim DV, Kim SY, Yang S. A micro-computed tomographic study of remaining filling materials of two bioceramic sealers and epoxy resin sealer after retreatment. Restor Dent Endod 2019; 44:e18. [PMID: 31149616 PMCID: PMC6529792 DOI: 10.5395/rde.2019.44.e18] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 03/20/2019] [Accepted: 03/22/2019] [Indexed: 11/14/2022] Open
Abstract
Objective This study evaluated the presence of residual root canal filling material after retreatment using micro-computed tomography (micro-CT). Materials and Methods Extracted human teeth (single- and double-rooted, n = 21/each; C-shaped, n = 15) were prepared with ProFile and randomly assigned to three subgroups for obturation with gutta-percha and three different sealers (EndoSeal MTA, EndoSequence BC sealer, and AH Plus). After 10 days, the filling material was removed and the root canals were instrumented one size up from the previous master apical file size. The teeth were scanned using micro-CT before and after retreatment. The percentage of remaining filling material after retreatment was calculated at the coronal, middle, and apical thirds. Data were analyzed using the Kruskal-Wallis test and Mann-Whitney U test with Bonferroni post hoc correction. Results The tested sealers showed no significant differences in the percentage of remaining filling material in single- and double-rooted teeth, although EndoSeal MTA showed the highest value in C-shaped roots (p < 0.05). The percentage of remaining filling material of AH Plus and EndoSeal MTA was significantly higher in C-shaped roots than in single- or double-roots (p < 0.05), while that of BC sealer was similar across all root types. EndoSeal MTA showed the highest values at the apical thirds of single- and double-roots (p < 0.05); otherwise, no significant differences were observed among the coronal, middle, and apical thirds. Conclusions Within the limitations of this study, a large amount of EndoSeal MTA remained after retreatment, especially in C-shaped root canals.
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Affiliation(s)
- KyungJae Kim
- Department of Conservative Dentistry, Seoul St. Mary's Dental Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Da Vin Kim
- Department of Conservative Dentistry, Seoul St. Mary's Dental Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sin-Young Kim
- Department of Conservative Dentistry, Seoul St. Mary's Dental Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - SungEun Yang
- Department of Conservative Dentistry, Seoul St. Mary's Dental Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Borges MMB, Duque JA, Zancan RF, Vivan RR, Bernardes RA, Duarte MAH. Efficacy of reciprocating systems for removing root filling material plus complementary cleaning methods in flattened canals: Microtomography and scanning electron microscopy study. Microsc Res Tech 2019; 82:1057-1064. [PMID: 30889319 DOI: 10.1002/jemt.23253] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 02/24/2019] [Accepted: 02/26/2019] [Indexed: 01/09/2023]
Abstract
The aim of this study was to evaluate three reciprocating systems and complementary cleaning methods on filling material removal during retreatment of flattened canals. Thirty-six mandibular incisors were prepared using rotary instruments up to size 25.08 and filled using the single-cone technique. Subsequently, the teeth were divided into three groups (n = 12) according to retreatment procedures: Reciproc Blue (RB): 25/0.08 and 40/0.06; ProDesign R (PDR): 25/0.06 and 35/0.05; and WaveOne Gold (WOG): 25/0.07 and 35/0.06. The remaining filling volume materials were assessed by means of micro-CT imaging before and after retreatment. After this, the specimens were subdivided into three groups according to complementary cleaning methods: XP-Endo Shaper (30/0.01); passive ultrasonic irrigation (PUI); 60° oscillatory instrumentation with #30 H-file, and micro-CT scan was taken. Then, the roots were cut in half and the samples were analyzed by scanning electron microscope (SEM). The data were analyzed statistically using Kruskal-Wallis and Dunn's Multiple Comparison test with significance level of 5%. None of the reciprocating files promoted complete removal of filling material and there was no statistical difference between the groups, regardless instrument size (p > 0.05). Complementary cleaning methods increased remnant filling removal (p < 0.05). XP-endo Shaper significantly reduced the amount of filling material in the apical and middle thirds, compared with H-files (p < 0.05), with no difference with PUI. In the SEM, there was no statistical difference among the instruments (p > 0.05). The reciprocating systems showed similar effectiveness in removing root filling material. Complementary cleaning method with the XP-Shaper enhanced filling material removal.
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Affiliation(s)
- Mariana M B Borges
- Department of Restorative Dentistry, Dental Materials and Endodontics, Bauru Dental School, University of São Paulo, São Paulo, Brazil
| | - Jussaro A Duque
- Department of Restorative Dentistry, Dental Materials and Endodontics, Bauru Dental School, University of São Paulo, São Paulo, Brazil
| | - Rafaela F Zancan
- Department of Restorative Dentistry, Dental Materials and Endodontics, Bauru Dental School, University of São Paulo, São Paulo, Brazil
| | - Rodrigo R Vivan
- Department of Restorative Dentistry, Dental Materials and Endodontics, Bauru Dental School, University of São Paulo, São Paulo, Brazil
| | - Ricardo A Bernardes
- Department of Restorative Dentistry, Dental Materials and Endodontics, Bauru Dental School, University of São Paulo, São Paulo, Brazil
| | - Marco A H Duarte
- Department of Restorative Dentistry, Dental Materials and Endodontics, Bauru Dental School, University of São Paulo, São Paulo, Brazil
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Kaloustian MK, Nehme W, El Hachem C, Zogheib C, Ghosn N, Michetti J, Naaman A, Diemer F. Evaluation of Two Shaping Systems and Two Ultrasonic Irrigation Devices in Removing Root Canal Filling Material from Mesial Roots of Mandibular Molars: A Micro CT Study. Dent J (Basel) 2019; 7:dj7010002. [PMID: 30609716 PMCID: PMC6473683 DOI: 10.3390/dj7010002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 12/11/2018] [Accepted: 12/14/2018] [Indexed: 01/21/2023] Open
Abstract
We assessed the efficiency of two shaping file systems and two passive ultrasonic irrigation (PUI) devices for removing filling material during retreatment. The mesial canals from 44 extracted mandibular molars were prepared and obturated. The teeth were randomly divided into two groups, and then one group was retreated with Reciproc R25 (VDW, Munich, Germany) (n = 44) and the other group was retreated with 2Shape (TS, Micro Mega, Besançon, France) (n = 44). A micro-computed tomography (CT) scan was taken before and after the retreatment to assess the volume of the filling material remnants. The teeth were then randomly divided into four groups to test two different PUI devices: Irrisafe (Satelec Acteon Group, Merignac, France) and Endo Ultra (Vista Dental Products, Racine, WI, USA). The teeth in Group A were retreated with 2Shape to test the Endo Ultra (n = 22) device, the teeth in Group B were retreated with 2Shape in order to test the Irrisafe (n = 22) device, the teeth in Group C were retreated with Reciproc to test the Endo Ultra (n = 22) device, and Group D was retreated with Reciproc to test the Irrisafe (n = 22) device. A third micro-CT scan was taken after the retreatment to test the PUIs. The percentage of Gutta-Percha (GP) and sealer removed was 94.75% for TS2 (p < 0.001) and 89.3% for R25 (p < 0.001). The PUI significantly enhanced the removal of the filling material by 0.76% for Group A (p < 0.001), 1.47% for Group B (p < 0.001), 2.61% for Group C (p < 0.001), and by 1.66% for Group D (p < 0.001). 2Shape was more effective at removing the GP and sealer during retreatment (p = 0.018). The supplementary approach with PUI significantly improved filling material removal, with no statistical difference between the four groups (p = 0.106).
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Affiliation(s)
- Marc Krikor Kaloustian
- Department of Endodontics, Faculty of Dentistry, Saint Joseph University, Beirut Po 11 5070, Lebanon.
| | - Walid Nehme
- Department of Endodontics, Faculty of Dentistry, Saint Joseph University, Beirut Po 11 5070, Lebanon.
| | - Claire El Hachem
- Department of Pediatric Dentistry, Faculty of Dentistry, Saint Joseph University, Beirut Po 11 5070, Lebanon.
| | - Carla Zogheib
- Department of Endodontics, Faculty of Dentistry, Saint Joseph University, Beirut Po 11 5070, Lebanon.
| | - Nabil Ghosn
- Department of Oral and Maxilla-Facial Radiology, Faculty of Dentistry, Saint Joseph University, Beirut Po 11 5070, Lebanon.
| | - Jérôme Michetti
- Institut de Recherche en Informatique de Toulouse, IRIT, CNRS UMR 5505, 118 Route de Narbonne, 31062 Toulouse CEDEX 9, France.
| | - Alfred Naaman
- Department of Endodontics, Faculty of Dentistry, Saint Joseph University, Beirut Po 11 5070, Lebanon.
| | - Franck Diemer
- Faculté de Chirurgie Dentaire CHU de Toulouse, Institut Clement Ader (labo), 118 Route de Narbonne, 31062 Toulouse CEDEX 9, France.
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RIVERA-PEÑA ME, DUARTE MAH, ALCALDE MP, DE ANDRADE FB, VIVAN RR. A novel ultrasonic tip for removal of filling material in flattened/oval-shaped root canals: a microCT study. Braz Oral Res 2018; 32:e88. [DOI: 10.1590/1807-3107bor-2018.vol32.0088] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 07/17/2018] [Indexed: 11/22/2022] Open
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Rubio J, Zarzosa JI, Pallarés A. Comparison of Shaping Ability of 10 Rotary and Reciprocating Systems: an In Vitro Study with AutoCad. Acta Stomatol Croat 2017; 51:207-216. [PMID: 29225361 PMCID: PMC5708324 DOI: 10.15644/asc51/3/4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Objective The aim of this study was to compare the cutting are, root canal anatomy preservation and non-instrumented areas of F360®, F6-SkyTaper®, Hyflex-EDM®, iRACE®, Neoniti®, O.Shape®, P.Next®, Reciproc®, Revo-S® and Wave-One-Gold® size 25 files. Materials and Methods 300 teeth with a single straight root and a circular or elliptical root canal were divided into 10 groups (1-F360®, 2- F6-SkyTaper®, 3-Hyflex-EDM®, 4-iRACE®, 5-Neoniti®, 6-O.Shape®, 7-P.Next®, 8-Reciproc®, 9-Revo-S® and 10-Wave-One-Gold®) cut into 3 cross sections using an ultrafine cutting disc. They were photographed under a stereo microscope and preinstrumentation analyses were made before rebuilding the teeth with# 10 K- File and epoxy glue. A glide path was created with #10 and #15 K files and each group was instrumented using rotary or reciprocating systems. Cutting areas, root canal anatomy preservation and non-instrumented areas were analyzed using the AutoCAD 2015 Levene's test, the Welch´s test, and the Games-Howell´s test. The Pearson’s chi-squared test was used for statistical analysis. Results Levene's test showed no equality of variances (P<0.05), therefore Welch´s and Games-Howell's tests were applied to cutting areas, showing significant differences in all thirds and overall (P<0.05). No differences in root canal anatomy preservation were observed (P>0.05). In non-instrumented areas, significant differences were found (P<0.05) in middle third being better in Reciproc®, Neoniti® and WaveOneGold®, and in apical thirds being higher P.Next®, Reciproc®, HyflexEDM®, Neoniti® and WaveOneGold®. Conclusions In cutting area, P.Next® and Reciproc® were superior in coronal third, Neoniti® and Hyflex EDM® medially and apically and Neoniti® and Reciproc® overall. Regarding the root canal anatomy preservation, all systems were similar. For non-instrumented areas, all systems achieved similar results coronally, but Reciproc®, Neoniti® and Wave One Gold® were superior in middle third and P.Next®, Reciproc®, Hyflex EDM®, Neoniti® and Wave One Gold® were superior in apically.
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Affiliation(s)
- Jorge Rubio
- Department of Endodontics, Catholic University of Valencia
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19
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Yılmaz F, Koç C, Kamburoğlu K, Ocak M, Geneci F, Uzuner MB, Çelik HH. Evaluation of 3 Different Retreatment Techniques in Maxillary Molar Teeth by Using Micro-computed Tomography. J Endod 2017; 44:480-484. [PMID: 29229455 DOI: 10.1016/j.joen.2017.09.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 09/05/2017] [Accepted: 09/17/2017] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Nonsurgical retreatment procedure involves the complete removal of the previous filling material to allow thorough instrumentation, disinfection, and refilling of root canal system. We aimed to determine the residuals of the root-filling material by using 3 different retreatment techniques with the aid of micro-computed tomography. METHODS Thirty extracted human maxillary molar teeth were included. All root canals were also obturated with F2 ProTaper single cones and AH Plus sealer. The following retreatment techniques were performed: group 1, ProTaper retreatment files; group 2, Mtwo retreatment files; and group 3, ProFile files. For the assessment of residual filling material, preoperative and postoperative micro-computed tomography scans were compared with each other, and the working time was recorded. One-way analysis of variance was used to analyze the differences between the groups. The significance level was set at P < .05. RESULTS None of the retreatment techniques were capable of removing the whole filling material. The percentages of the residual filling materials for groups 1, 2, and 3 were 34.45, 45.43, and 23.63, respectively. There was a statistically significant difference between groups 2 and 3 (P < .05). ProTaper and ProFile instruments required less time for the removal of filling materials when compared with Mtwo instrument. CONCLUSIONS ProFile files revealed the best results for endodontic retreatment in terms of both removing capacity and time requirement.
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Affiliation(s)
- Funda Yılmaz
- Department of Endodontics, Faculty of Dentistry, Ankara University, Ankara, Turkey
| | - Cemre Koç
- Department of Endodontics, Faculty of Dentistry, Ankara University, Ankara, Turkey
| | - Kıvanç Kamburoğlu
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Ankara University, Ankara, Turkey.
| | - Mert Ocak
- Department of Anatomy, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Ferhat Geneci
- Department of Anatomy, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - M Bora Uzuner
- Department of Anatomy, Faculty of Medicine, Kafkas University, Kars, Turkey
| | - Hakan Hamdi Çelik
- Department of Anatomy, Faculty of Medicine, Hacettepe University, Ankara, Turkey
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Comparing ProFile Vortex to ProTaper Next for the efficacy of removal of root filling material: An ex vivo micro-computed tomography study. Saudi Dent J 2017; 30:63-69. [PMID: 30166873 PMCID: PMC6112351 DOI: 10.1016/j.sdentj.2017.10.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 10/24/2017] [Accepted: 10/29/2017] [Indexed: 11/25/2022] Open
Abstract
Aim This study compared the efficacy of ProFile Vortex (PV) with that of ProTaper Next (PTN) for the removal of root canal filling material. Materials and methods Twenty-six mesial canals of extracted mandibular first molars were instrumented, obturated with gutta-percha and sealant, and randomly allocated to a PTN (X3, X2, or X1) or PV group. The percentage of remaining material, amount of dentin removed, and extent of transportation were assessed using micro-computed tomography. The total time required for removal of material was calculated. Results Both systems were effective for material removal (p ≤ 0.001). Less time was required to remove material using PV (256.43 ± 108.95 s) than using PTN (333.31 ± 81.63 s; p ≤ 0.05). PV and PTN files removed approximately 84% and 78% of the filling material, respectively (p > .05). There was no significant canal transportation in either group. PV and PTN files removed 1.32 ± 0.48 mm3 and 1.63 ± 0.67 mm3 of the dentin, respectively (p = .18). Conclusion Our findings suggest that PV is as effective as PTN for removal of root canal filling material. Therefore, PV can be considered for use in endodontic retreatment, although more effective files or techniques are still required.
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Çitak M, Özyürek T. Effect of different nickel-titanium rotary files on dentinal crack formation during retreatment procedure. J Dent Res Dent Clin Dent Prospects 2017; 11:90-95. [PMID: 28748049 PMCID: PMC5519999 DOI: 10.15171/joddd.2017.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 11/06/2016] [Indexed: 11/12/2022] Open
Abstract
Background. The aim of this study was to compare the dentinal defects caused by Reciproc, TF Adaptive and ProTaper Next NiTi rotary file systems during the retreatment procedure.
Methods. A total of 150 mandibular incisors with straight and single root canals were included in the present study. All the root canals were prepared up to an apical diameter 0.40 mm using stainless steel files. Thirty teeth were randomly stored as the negative control group. A total of 120 specimens were obturated with gutta-percha and AH Plus sealer using vertical compaction technique. Thirty specimens with root canal filling were randomly separated for the only-filled group. Then the teeth were randomly divided into 3 groups; Reciproc, TF Adaptive and ProTaper Next. The retreatment procedure was performed with these NiTi files. Then 150 specimens were cut perpendicular to tooth axis at 3-, 6-, and 9-mm distances from the apex, and examined to determine the presence of any cracks at ×25 under a stereomicroscope. Chi-squared test was used at 5% significance level.
Results. All the tested NiTi file systems were found to cause significantly more dentinal defects compared to unprepared and only-filled groups (P<0.05). No statistically significant differences were found between the groups in terms of dentinal defects (P>0.05). No correlation was found between the slice levels and the dentinal defect distribution (P>0.05).
Conclusion. Within the limitations of present study, all the tested NiTi file systems were found to cause significantly more dentinal defects compared to unprepared and only-filled groups.
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Affiliation(s)
- Mehmet Çitak
- Department of Endodontics, Faculty of Dentistry, Ordu University, Ordu, Turkey
| | - Taha Özyürek
- Department of Endodontics, Faculty of Dentistry, Ondokuz Mayis University, Samsun, Turkey
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Ozyurek T, Ozsezer-Demiryurek E. Efficacy of protaper next and protaper universal retreatment systems in removing gutta-percha in curved root canals during root canal retreatment. J Istanb Univ Fac Dent 2017; 51:7-13. [PMID: 28955590 PMCID: PMC5573468 DOI: 10.17096/jiufd.97431] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 08/08/2016] [Indexed: 11/28/2022] Open
Abstract
Purpose: The aim of this study was to compare the cleanliness of root canal walls after retreatment using ProTaper Next (PTN), ProTaper Universal
Retreatment (PTR) nickel-titanium (NiTi) systems and Hedström hand files in curved mesial canals of mandibular molar teeth and the time required for gutta-percha and
sealer removal. Materials and Methods: Ninety mandibular molar teeth with curved mesial roots were instrumented up to #35.04 with Mtwo NiTi rotary instruments and
obturated using the continuous wave of condensation technique. Removal of gutta-percha and sealer was performed using one of the following: PTN and PTR NiTi systems
and Hedström hand files. Samples were placed on the VistaScan phosphor plates in the mesio-distal direction and the radiographs were taken. The digital radiographs
were analyzed using AutoCAD software. Also, the total time required for gutta-percha removal was calculated by a chronometer. Results: The total retreatment time was significantly shorter in the PTN and PTR groups compared with the manual group (p<0.05). There was a
significant difference between the groups according to the total residual gutta-percha and sealer (p<0.05). The PTN and PTR groups left significantly less
gutta-percha and sealer remnant than the manual group (p<0.001). Conclusion: Within the limitations of this study, the PTN and PTR groups showed less residual gutta-percha and sealer than the manual group. The NiTi
rotary systems were significantly faster than the manual group in the time required for gutta-percha and sealer removal.
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Affiliation(s)
- Taha Ozyurek
- Department of Endodontics Faculty of Dentistry Ondokuz Mayıs University Turkey
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Yılmaz K, Özyürek T. Apically Extruded Debris after Retreatment Procedure with Reciproc, ProTaper Next, and Twisted File Adaptive Instruments. J Endod 2017; 43:648-651. [DOI: 10.1016/j.joen.2016.12.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 11/29/2016] [Accepted: 12/04/2016] [Indexed: 11/28/2022]
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Zanesco C, Só MVR, Schmidt S, Fontanella VRC, Grazziotin-Soares R, Barletta FB. Apical Transportation, Centering Ratio, and Volume Increase after Manual, Rotary, and Reciprocating Instrumentation in Curved Root Canals: Analysis by Micro-computed Tomographic and Digital Subtraction Radiography. J Endod 2017; 43:486-490. [DOI: 10.1016/j.joen.2016.11.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 10/25/2016] [Accepted: 11/07/2016] [Indexed: 11/27/2022]
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Martins MP, Duarte MAH, Cavenago BC, Kato AS, da Silveira Bueno CE. Effectiveness of the ProTaper Next and Reciproc Systems in Removing Root Canal Filling Material with Sonic or Ultrasonic Irrigation: A Micro-computed Tomographic Study. J Endod 2017; 43:467-471. [PMID: 28131411 DOI: 10.1016/j.joen.2016.10.040] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 10/24/2016] [Accepted: 10/26/2016] [Indexed: 10/20/2022]
Abstract
INTRODUCTION The aim of this study was to evaluate the effectiveness of ProTaper Next (Dentsply Maillefer, Ballaigues, Switzerland) and Reciproc (VDW, Munich, Germany) systems in removing filling material from oval root canals using sonic or ultrasonic irrigation as additional cleaning methods. METHODS Thirty-two human extracted mandibular premolars with oval canals were prepared using the ProTaper Universal system (Dentsply Maillefer) up to instrument F4 (40/.06) and then filled by the single-cone technique using Endofill sealer (Dentsply Maillefer). The teeth were randomly divided into 4 groups (n = 8) according to the instrumentation system and the additional cleaning method as follows: Reciproc 40 with ultrasonic activation, Reciproc 40 with sonic agitation, ProTaper Next (X2, X3, and X4) with ultrasonic activation, and ProTaper Next (X2, X3, and X4) with sonic agitation. All specimens were analyzed using micro-computed tomographic imaging before and after removal of the filling material and also after applying the additional cleaning methods. The data, in mm3 of remaining filling material, were analyzed by the Kruskal-Wallis, Dunn, and Mann-Whitney tests. RESULTS None of the retreatment protocols completely removed the filling material from the root canals, and there was no significant difference between the instrumentation systems or between root thirds assessed in terms of the average volume of remaining filling material (P > .05). Likewise, no significant difference was observed between the additional cleaning methods in any of the root canal thirds assessed (P > .05). CONCLUSIONS The ProTaper Next and Reciproc systems were equivalent with respect to effectiveness in removing filling material regardless of the additional cleaning method used. The additional cleaning methods were also equivalent and did not improve the removal of filling material significantly.
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Affiliation(s)
- Milena Perraro Martins
- Postgraduate Program in Endodontics, São Leopoldo Mandic Dental Research Center, Campinas, São Paulo, Brazil.
| | | | | | - Augusto Shoji Kato
- Postgraduate Program in Endodontics, São Leopoldo Mandic Dental Research Center, Campinas, São Paulo, Brazil
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Özyürek T, Demiryürek EÖ. Comparison of the Effectiveness of Different Techniques for Supportive Removal of Root Canal Filling Material. Eur Endod J 2016; 1:1-6. [PMID: 32566900 PMCID: PMC7299057 DOI: 10.5152/eej.2016.16002] [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: 05/24/2016] [Revised: 07/12/2016] [Accepted: 11/04/2016] [Indexed: 11/22/2022] Open
Abstract
Objective: To compare the cleanliness of oval cross-sectioned root canals after using different supportive techniques for removal of root canal filling material as part of retreatment process. Methods: One hundred mandibular canine teeth with flat oval cross-sectioned canals were instrumented up to #40.06 and obturated using the warm vertical compaction technique. Removal of the gutta-percha and sealer was performed using the D-RaCe nickel-titanium retreatment instruments. The roots were randomly divided into four groups of 25 teeth, and the activation processes were applied: XP-endo Finisher (XP), EndoActivator (EA) and IrrıSafe (IS). Conventional needle irrigation (CI) was used as the control group. The teeth were sectioned, and digital images were captured. The photographs were analysed using AutoCAD software regarding the area of residual root filling. Kruskal–Wallis and post hoc Dunn’s tests were performed for statistical analysis. Results: There was significantly less gutta-percha and sealer remnant in the XP group than in the other groups (P<0.05). The CI group contained significantly more gutta-percha and sealer remnant than the other groups (P<0.05). The apical third of the CI group had significantly more residual gutta-percha and sealer when compared to that of the other groups (P<0.05). Conclusion: Within the limitations of this study, the amount of gutta-percha and sealer in the XP group was lower than that in the EA, IS, and CI groups.
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Affiliation(s)
- Taha Özyürek
- Department of Endodontics, Ondokuz Mayis University, Faculty of Dentistry, Samsun, Turkey
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Rodrigues CT, Duarte MAH, de Almeida MM, de Andrade FB, Bernardineli N. Efficacy of CM-Wire, M-Wire, and Nickel-Titanium Instruments for Removing Filling Material from Curved Root Canals: A Micro–Computed Tomography Study. J Endod 2016; 42:1651-1655. [DOI: 10.1016/j.joen.2016.08.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 08/03/2016] [Accepted: 08/12/2016] [Indexed: 11/28/2022]
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Niemi TK, Marchesan MA, Lloyd A, Seltzer RJ. Effect of Instrument Design and Access Outlines on the Removal of Root Canal Obturation Materials in Oval-shaped Canals. J Endod 2016; 42:1550-4. [DOI: 10.1016/j.joen.2016.07.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 07/08/2016] [Accepted: 07/16/2016] [Indexed: 10/21/2022]
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Preetam CS, Chandrashekhar M, Gunaranjan T, Kumar SK, Miskeen Sahib SA, Kumar MS. A comparative evaluation of two rotary Ni-Ti instruments in the removal of gutta-percha during retreatment. J Int Soc Prev Community Dent 2016; 6:S131-6. [PMID: 27652245 PMCID: PMC5022390 DOI: 10.4103/2231-0762.189740] [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] [Indexed: 11/04/2022] Open
Abstract
AIM The purpose of this study is to achieve an effective method to remove root canal filling material from the root canal system. The study, thus, aims to evaluate the efficacy of the cleaning ability of two different rotary Ni-Ti systems; ProTaper Retreatment files and RaCe System compared to hand instrumentation with Hedstrom files for the removal of gutta-percha during retreatment. MATERIALS AND METHODS Thirty mandibular premolars with one single straight canal were decoronated and instrumented with ProTaper files and filled with thermoplastic gutta-percha. After 30 days, the samples were divided into three groups and gutta-percha was removed with the test instruments. The postoperative radiographs were evaluated with known criteria by dividing the root into cervical third, middle third, and apical third. The results were tabulated and Statistical Package for Social Sciences Software (IBM Corporation) was used for analysis. RESULTS The mean deviation of the results were first calculated and then t-test and analysis of variance test (two-tailed P value) were evaluated for establishing significant differences. The rotary instruments were effective in removing the gutta-percha from the canals. Therefore, significant difference was observed between the efficacies of the two rotary systems used. The rotary instruments showed effective gutta-percha removal in the cervical and middle one third. (P > 0.05). However, apical debridement was effective with Hedstrom files. CONCLUSION The study concluded the use of both rotary and hand instrumentation for effective removal of gutta-percha for retreatment.
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Affiliation(s)
- C S Preetam
- Department of Conservative Dentistry and Endodontics, Madha Dental College, Chennai, Tamil Nadu, India
| | - M Chandrashekhar
- Department of Conservative Dentistry and Endodontics, G. Pulla Reddy Dental College, Kurnool, India
| | - T Gunaranjan
- Department of Conservative Dentistry and Endodontics, Narayana Dental College, Nellore, Andhra Pradesh, India
| | - S Kishore Kumar
- Department of Conservative Dentistry and Endodontics, Adithya Dental College, Beed, Maharashtra, India
| | - S A Miskeen Sahib
- Department of Conservative Dentistry and Endodontics, Madha Dental College, Chennai, Tamil Nadu, India
| | - M Senthil Kumar
- Department of Conservative Dentistry and Endodontics, Madha Dental College, Chennai, Tamil Nadu, India
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