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Snigdha NTS, Kamarudin A, Baharin F, Ghani NRNA, Bin Yhaya MF, Ahmad WMAW, Karobari MI. Evaluation of bacterial leakage and marginal adaptation of the bioceramics pulp dressing materials: an invitro study. BMC Oral Health 2023; 23:462. [PMID: 37420224 PMCID: PMC10329390 DOI: 10.1186/s12903-023-03129-1] [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: 03/19/2023] [Accepted: 06/13/2023] [Indexed: 07/09/2023] Open
Abstract
OBJECTIVE To compare the sealing ability and marginal adaptation of three calcium silicate-based cement (Biodentine, Pro root MTA, MTA Angelus) using a bacterial leakage model and scanning electron microscope (SEM). METHODS Recently extracted lower first premolars were randomly categorized into three experimental groups (n = 15 samples), positive control (n = 5 samples), and negative control group (n = 5 sample). Samples from the experimental groups and positive control group were subject to cavity Class I occlusal preparation followed by modified coronal pulpotomy. Different types of bioceramic dressing material were placed in 3 mm thickness accordingly, group 1 (Biodentine), group 2 (MTA Angelus), and group 3 (ProRoot MTA). No dressing material was placed in the positive control group (group 4). All samples were placed in the incubator for 24 h at 37℃, 100% humidity, for the materials to be completely set. The final restoration was placed using the Z350 resin composite. A double layer of nail varnish was applied over all the sample surfaces except the occlusal site. Whereas the samples' surfaces in the negative control, were completely covered. A 3 mm length was measured from the root apex of the samples from each group, before proceeding with the resection. The bacterial leakage test was performed using Enterococcus faecalis TCC 23,125, and a sample from each experimental group was randomly chosen for SEM. Data analysis was conducted under the One-way ANOVA test, completed by Tukey's post hoc test. RESULTS There is a significant difference in sealing ability and marginal adaptation between the groups. (p < 0.05). The study showed that Pro Root MTA had the superior sealing ability and marginal adaptation compared to Biodentine and MTA Angelus. CONCLUSION The ProRoot MTA as a coronal pulpotomy pulp dressing material, was found to have a better marginal adaptation and sealing ability compared to three other bioceramics materials. The material would be the better choice during clinical settings and procedures.
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Affiliation(s)
- Niher Tabassum Siddiqua Snigdha
- Department of Paediatric Dentistry, School of Dental Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, 16150, Malaysia
| | - Aimi Kamarudin
- Department of Paediatric Dentistry, School of Dental Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, 16150, Malaysia.
| | - Fadzlinda Baharin
- Department of Paediatric Dentistry, School of Dental Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, 16150, Malaysia
| | - Nik Rozainah Nik Abdul Ghani
- Department of Conservative Dentistry, School of Dental Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, 16150, Malaysia
| | - Mohd Firdaus Bin Yhaya
- Department of Biomaterials and 3D Imaging (BioM3D) Laboratory, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, 16150, Malaysia
| | - Wan Muhamad Amir W Ahmad
- School of Dental Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, 16150, Malaysia
| | - Mohmed Isaqali Karobari
- Department of Restorative Dentistry & Endodontics, Faculty of Dentistry, University of Puthisastra, Phnom Penh, 12211, Cambodia.
- Department of Conservative Dentistry & Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, 600077, India.
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ZAN R, DEMİR AŞ. CONTEMPORARY ENDODONTIC OBTURATION TECHNIQUES: A COMPREHENSIVE LITERATURE REVIEW. CUMHURIYET DENTAL JOURNAL 2021. [DOI: 10.7126/cumudj.948193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Comparison of the Effects of a Bioceramic and Conventional Resin-Based Sealers on Postoperative Pain after Nonsurgical Root Canal Treatment: A Randomized Controlled Clinical Study. MATERIALS 2021; 14:ma14102661. [PMID: 34069521 PMCID: PMC8161030 DOI: 10.3390/ma14102661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/14/2021] [Accepted: 05/17/2021] [Indexed: 12/02/2022]
Abstract
Background: This clinical trial aimed to compare the effects of bioceramic sealer and resin-based sealer on the incidence and intensity of postoperative pain. Methods: Patients with anterior teeth or premolars requiring root canal treatment were assigned to group 1 (n = 51). Those with molars requiring treatment were assigned to group 2 (n = 57). In groups 1En and 2En, root canals were obturated with Endoseal MTA using the single-cone technique. In groups 1AH and 2AH, the sealer used was AH Plus with the continuous wave technique. On the day of canal filling, each patient was instructed to indicate their pain intensity over the 7 day postoperative period, at rest and, while biting, using a visual analog scale. Results: There was no significant difference in the incidence or intensity of postoperative pain between the Endoseal MTA and AH Plus groups during the 7 day postoperative period (p > 0.05). Less time was needed to seal the root canals with Endoseal MTA, especially in group 2 (p < 0.05). Conclusions: Endoseal MTA and AH Plus had similar effects on the incidence and intensity of postoperative pain. The obturation time was shorter when using Endoseal MTA compared to AH Plus.
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Sousa-Neto MDD, Silva-Sousa YC, Mazzi-Chaves JF, Carvalho KKT, Barbosa AFS, Versiani MA, Jacobs R, Leoni GB. Root canal preparation using micro-computed tomography analysis: a literature review. Braz Oral Res 2018; 32:e66. [DOI: 10.1590/1807-3107bor-2018.vol32.0066] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 06/06/2018] [Indexed: 11/21/2022] Open
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Mohamed El Sayed MAA, Al Husseini H. Apical dye leakage of two single-cone root canal core materials (hydrophilic core material and gutta-percha) sealed by different types of endodontic sealers: An in vitro study. J Conserv Dent 2018; 21:147-152. [PMID: 29674815 PMCID: PMC5890403 DOI: 10.4103/jcd.jcd_154_17] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim of the Study: The aim of this study was to compare the apical sealing ability of two single-cone filling materials when sealed with different types of root canal sealers. Materials and Methods: Eighty extracted maxillary and mandibular canines were selected and their crowns were cut. The root canals were prepared using ProTaper Universal rotary system until size F4 and then divided into seven experimental groups (n = 10 each) and two control groups (n = 5 each). Samples of Groups 1, 2, and 3 were filled with single-cone gutta-percha and AH Plus, MTA Fillapex, and EndoSequence BC, respectively. Samples of Groups 4, 5, and 6 were filled similar to the previous groups with the exception of using a single-cone CPoint. Samples of Group 7 were filled with cold gutta-percha lateral condensation technique. To assess apical microleakage, the apical linear dye penetration was measured microscopically and data were statistically analyzed. Results: All experimental groups showed significantly different dye apical leakage values (P = 0.000). No significant differences were found between Groups 1, 2, 4, 6, and 7 (P < 0.05). The lowest mean leakage value was observed in Group 6 (0.95 ± 0.56 mm) while Groups 3 (2.68 ± 0.71 mm) and 5 (2.61 ± 0.71 mm) showed significantly higher mean leakage values. Conclusions: The lowest apical leakage value was observed with single-cone CPoint/EndoSequence BC but without significant differences when compared with single-cone gutta-percha/AH Plus, single-cone gutta-percha/MTA Fillapex, single-cone CPoint/AH Plus, and lateral condensation technique. Higher apical leakage values were observed with single-cone gutta-percha/EndoSequence BC and CPoint/MTA Fillapex.
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Affiliation(s)
- Mohamed Abdel Aziz Mohamed El Sayed
- Department of Restorative Dentistry, Faculty of Dentistry, Ajman University, Ajman, UAE.,Department of Endodontic, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Hussam Al Husseini
- Department of Restorative Dentistry, Faculty of Dentistry, Ajman University, Ajman, UAE
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Medeiros PL, Bernardineli N, Cavenago BC, Torres SA, Duarte MAH, Bramante CM, Marciano MA. Sealing ability of MTA, CPM, and MBPc as root-end filling materials: a bacterial leakage study. J Appl Oral Sci 2016; 24:148-52. [PMID: 27119763 PMCID: PMC4836922 DOI: 10.1590/1678-775720130103] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 06/12/2014] [Indexed: 01/28/2023] Open
Abstract
Objectives To evaluate the sealing ability of three root-end filling materials (white MTA, CPM, and MBPc) using an Enterococcus faecalis leakage model. Material and Methods Seventy single-root extracted human teeth were instrumented and root-ends were resected to prepare 3 mm depth cavities. Root-end preparations were filled with white MTA, CPM, and MBPc cements. Enterococcus faecalis was coronally introduced and the apical portion was immersed in BHI culture medium with phenol red indicator. The bacterial leakage was monitored every 24 h for 4 weeks. The statistical analysis was performed using the Wilcoxon-Gehan test (p<0.05). Results All cements showed bacterial leakage after 24 hours, except for the negative control group. The MBPc showed significantly less bacterial leakage compared with the MTA group (p<0.05). No significant differences were found between the CPM and the other groups. Conclusions The epoxy resin-based cement MBPc had lower bacterial leakage compared with the calcium silicate-based cements MTA and CPM.
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Affiliation(s)
- Paulo Leal Medeiros
- Departamento de Dentística, Materiais Odontológicos e Endodontia, Faculdade de Odontologia de Bauru, Universidade de São Paulo, Bauru, SP, Brasil
| | - Norberti Bernardineli
- Departamento de Dentística, Materiais Odontológicos e Endodontia, Faculdade de Odontologia de Bauru, Universidade de São Paulo, Bauru, SP, Brasil
| | - Bruno Cavalini Cavenago
- Departamento de Dentística, Materiais Odontológicos e Endodontia, Faculdade de Odontologia de Bauru, Universidade de São Paulo, Bauru, SP, Brasil
| | - Sérgio Aparecido Torres
- Departamento de Microbiologia e Imunologia, Faculdade de Odontologia de Bauru, Universidade de São Paulo, Bauru, SP, Brasil
| | - Marco Antonio Hungaro Duarte
- Departamento de Dentística, Materiais Odontológicos e Endodontia, Faculdade de Odontologia de Bauru, Universidade de São Paulo, Bauru, SP, Brasil
| | - Clovis Monteiro Bramante
- Departamento de Dentística, Materiais Odontológicos e Endodontia, Faculdade de Odontologia de Bauru, Universidade de São Paulo, Bauru, SP, Brasil
| | - Marina Angélica Marciano
- Departamento de Dentística, Materiais Odontológicos e Endodontia, Faculdade de Odontologia de Bauru, Universidade de São Paulo, Bauru, SP, Brasil
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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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Comparison between gutta-percha and resin-coated gutta-percha using different obturation techniques. J Appl Biomater Funct Mater 2016; 14:e307-13. [PMID: 27149939 DOI: 10.5301/jabfm.5000273] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/08/2016] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND The aim of this study was to evaluate and compare the obturation quality between canals obturated with gutta-percha/AH Plus sealer (GP group) and resin-coated GP/EndoREZ® sealer (ER group). METHODS A total sample of 90 mandibular premolar teeth was divided into 2 groups (2 × 45 canals): the GP group and ER group. Each group was further divided into 3 subgroups (n = 15): cold lateral compaction (CLC), warm lateral compaction (WLC) and single cone (SC). The teeth were subsequently embedded in resin and sectioned horizontally at 1, 3, 6 and 9 mm. All sections were then viewed with a stereomicroscope at ×40 magnification. The area occupied by core filling materials was determined using Cell^D software. RESULTS With CLC, the percentage of core filling materials in the ER group was significantly higher than in the GP group at the 1- and 3-mm levels. Similarly, with WLC, the percentage of core filling material in the ER group was significantly higher than in the GP group at the 1-, 3- and 9-mm levels. With SC, the percentage of core filling materials in the ER group was significantly higher than in the GP group at all levels. CONCLUSIONS It can be concluded that the resin-coated GP/EndoREZ® sealer is superior to the gutta-percha/AH Plus in the percentage of core filling material.
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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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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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Samiei M, Aghazade M, Farhadi F, Shahveghar N, Torab A, Vahid Pakdel SM. Sealing Efficacy of Single-cone Obturation Technique with MTA and CEM Cement: An in Vitro Bacterial Leakage Study. J Dent Res Dent Clin Dent Prospects 2014; 8:77-83. [PMID: 25093050 PMCID: PMC4120909 DOI: 10.5681/joddd.2014.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Accepted: 12/12/2013] [Indexed: 11/21/2022] Open
Abstract
Background and aims. Various materials and methods have been introduced for obturating cleaned and shaped root canal systems. This in vitro study aimed to evaluate the sealing ability of single-cone obturation technique with mineral trioxide aggregate and calcium-enriched mixture based on bacterial leakage approach. Materials and methods. Sixty-four single-canal teeth were prepared and randomly divided into 5 groups, consisting of three experimental groups (n = 16) and two control groups (n = 8).In group 1, root canal obturation was performed using gutta-percha with 0.02 taper and AH26 sealer by lateral compaction technique. In groups 2 and 3, single Protaper gutta-percha cone was used for obturation with MTA and CEM cement, respectively. A bacterial leakage apparatus was utilized for leakage assessment for 60 days. Leakage comparison between the experimental groups was performed by one-way ANOVA using SPSS 16 statistical software. Results. The mean bacterial leakage intervals in groups 1, 2 and 3 were 33.68 ± 9.39, 40.68 ± 11.03 and 39.56 ± 9.03 days, respectively. One-way ANOVA indicated no significant differences in bacterial leakage between the three experimen-tal groups (P = 0.109). Conclusion. Single-cone obturation with well-fitted gutta-percha and MTA and CEM cement is an appropriate alternative for traditional lateral compaction technique.
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Affiliation(s)
- Mohammad Samiei
- Assistant Professor, Department of Endodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Aghazade
- Assistant Professor, Department of Microbiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Farrokh Farhadi
- Assistant Professor, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Naeimeh Shahveghar
- Under-graduate Student, Student Research Committee, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ali Torab
- Under-graduate Student, Student Research Committee, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Seyyed Mahdi Vahid Pakdel
- Post-graduate Student, Department of Prosthodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
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Ozcan E, Eldeniz AÜ, Aydinbelge HA. Assessment of the sealing abilities of several root canal sealers and filling methods. Acta Odontol Scand 2013; 71:1362-9. [PMID: 23394208 DOI: 10.3109/00016357.2012.762990] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE To evaluate the sealing abilities of two root canal sealers (epoxy resin-based AH Plus(®) and polydimethylsiloxane-based GuttaFlow(®)) and of five root filling techniques (lateral condensation, matched taper single gutta-percha point, laterally condensed-matched taper gutta-percha point, Thermafil(®) and continuous wave of condensation), using a bacterial leakage model. MATERIALS AND METHODS One hundred and seventy-four single-rooted human teeth were randomly divided into 10 test groups (n = 15) and two control groups (n = 12). The roots that were filled with the test material, using the different root filling techniques, were mounted in a two-chamber bacterial leakage model and Enterococcus faecalis was added to the upper chambers. The lower chambers of all of the specimens were checked every day during the test period (100 days). The day of turbidity was recorded for each sample. Statistical analysis was performed using the Kaplan-Meier and log-rank tests. RESULTS There was no significant difference between the epoxy resin-based and the polydimethylsiloxane-based sealers, irrespective of the filling techniques used (p > 0.05). The continuous wave of condensation technique was found to be superior to the other techniques (p < 0.05). The difference between the other groups was insignificant (p > 0.05). CONCLUSIONS AH Plus and GuttaFlow sealers showed similar levels of sealing ability. The continuous wave of condensation technique had the best sealing capability when compared to the other techniques.
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Affiliation(s)
- Erhan Ozcan
- Selçuk University, Faculty of Dentistry, Department of Endodontics , Konya , Turkey
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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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Chiuch A, De Biasi M, Sossi D, Pecci R, Bedini R, Somma F, Angerame D. Nuovi e vecchi concetti in Endodonzia: il sistema Reciproc. GIORNALE ITALIANO DI ENDODONZIA 2013. [DOI: 10.1016/j.gien.2013.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Schäfer E, Köster M, Bürklein S. Percentage of gutta-percha-filled areas in canals instrumented with nickel-titanium systems and obturated with matching single cones. J Endod 2013; 39:924-8. [PMID: 23791265 DOI: 10.1016/j.joen.2013.04.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Revised: 03/05/2013] [Accepted: 04/03/2013] [Indexed: 10/26/2022]
Abstract
INTRODUCTION The purpose of this study was to compare different single-cone obturation techniques in terms of the percentage of gutta-percha-filled areas (PGFA), sealer-filled areas (PSFA), and voids. METHODS Sixty extracted mandibular incisors with straight canals were allocated into 6 groups: (A) FlexMaster, (B) Mtwo, (C) ProTaper, (D) Reciproc, (E) WaveOne, and (F) control. In groups A-E, obturation was performed by using matching single-cone gutta-percha. In group F (control), manual instrumentation and obturation were performed by using cold lateral compaction with standardized gutta-percha cones. The teeth were sectioned at 2, 4, 6, and 8 mm from the apex. The total area of each canal segment was measured, and the areas were converted to PGFA, PSFA, and percentage of voids. Data were subjected to the Kruskal-Wallis and post hoc Dunn test. RESULTS At the 2-mm level, group B produced significantly higher PGFA than all other groups, whereas group B produced significantly higher PGFA than groups C, D, and E (P < .05). At the 4-mm level, groups A and B produced significantly higher PGFA than all other groups, whereas group F produced significantly higher PGFA and lower PSFA than groups C, D, and E (P < .05). At the 6-mm level, group F produced significantly higher PGFA and lower PSFA (P < .05) than all other groups, whereas groups A and B produced significantly higher PGFA and lower PSFA than groups C, D, and E (P < .05). At the 8-mm level, group F produced significantly higher PGFA and lower PSFA (P < .05) than all other groups. CONCLUSIONS Under the conditions of this study, lateral compaction and single-cone techniques that used constant tapered gutta-percha (FlexMaster, Mtwo) produced higher PGFA at the apical levels than variable tapered single-cone gutta-percha (ProTaper, Reciproc, WaveOne).
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Affiliation(s)
- Edgar Schäfer
- Central Interdisciplinary Ambulance in the School of Dentistry, University of Münster, Münster, Germany.
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Azar MR, Safi L, Nikaein A. Comparison of the cleaning capacity of Mtwo and Pro Taper rotary systems and manual instruments in primary teeth. Dent Res J (Isfahan) 2012; 9:146-51. [PMID: 22623929 PMCID: PMC3353689 DOI: 10.4103/1735-3327.95227] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Background: Root canal cleaning is an important step in endodontic therapy. In order to develop better techniques, a new generation of endodontic instruments has been designed. The aim of this study was to compare the effectiveness of manual K-files (Mani Co, Tokyo, Japan) and two rotary systems–Mtwo (Dentsply-Maillefer, Ballaigues, Switzerland) and ProTaper (VDW, Munich, Germany)–for root canal preparation in primary molars. Materials and Methods: India ink was injected to 160 mesiobuccal and distal root canals of mandibular primary molars. The teeth were randomly divided into three experimental groups and one control group. In each experimental group, either manual instruments (K-files) or rotary instruments (Mtwo or ProTaper) were used to prepare root canals. After cleaning the canals and clearing the teeth, ink removal was evaluated with a stereomicroscope. Statistical analysis was done with Kruskal–Wallis and Friedman tests. Results: There were no significant differences in cleaning efficiency between manual and rotary instruments. Only ProTaper files performed significantly better in the coronal and middle thirds than in the apical third of the root canal. Conclusion: Manual K-files and the Mtwo and ProTaper rotary systems showed equally acceptable cleaning ability in primary molar root canals.
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Affiliation(s)
- Mohammad Reza Azar
- Department of Endodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
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Tummala M, Chandrasekhar V, Rashmi AS, Kundabala M, Ballal V. Assessment of the wetting behavior of three different root canal sealers on root canal dentin. J Conserv Dent 2012; 15:109-12. [PMID: 22557805 PMCID: PMC3339001 DOI: 10.4103/0972-0707.94573] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2011] [Revised: 11/25/2011] [Accepted: 12/05/2011] [Indexed: 11/12/2022] Open
Abstract
Aim: The objective of the present study was to evaluate and compare the wetting behavior of three different root canal sealers on the root canal dentin surface treated with irrigants and their combination. Materials and Methods: Decoronation and apical third resections of 27 extracted single-rooted human mandibular premolars were done. The roots were then split longitudinally into two halves, and randomly assigned into three treatment groups (n=18). The root dentin surfaces in Group1, Group 2 and Group 3 were treated with 17% ethylene diamine tetra acetic acid (EDTA), 3% sodium hypochlorite (NaOCl) and combination of 17% EDTA and 3% NaOCl, respectively. Each group was subdivided into three subgroups of 6 specimens each, depending on the the sealer used, i.e. sub group A. zinc oxide (ZnOE), sub group B. AH plus, subgroup C. Guttaflow sealer, respectively. The contact angle was measured using First Ten Angstroms (FTA) 200 dynamic contact angle analyzer. Results: The contact angle values for AH Plus sealer were significantly lower when compared to the other two sealer groups. Conclusion: The wettability of AH Plus sealer on the root surface dentin was found to be better than Gutta-Flow and ZnOE sealer.
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Affiliation(s)
- Muralidhar Tummala
- Department of Conservative Dentistry and Endodontics, Mamata Dental College, Khammam, Andhra Pradesh, India
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Rechenberg DK, De-Deus G, Zehnder M. Potential systematic error in laboratory experiments on microbial leakage through filled root canals: review of published articles. Int Endod J 2011; 44:183-94. [PMID: 21219357 DOI: 10.1111/j.1365-2591.2010.01821.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
AIM To systematically evaluate whether published studies on microbial leakage through filled root canals in human teeth embedded in a two-chamber system were properly controlled. Specifically, the control for the assumption that leakage should occur through the root canal rather than other routes was investigated. METHODOLOGY A systematic search was conducted using Medline, Biosis, Cochrane, Embase, and Web of Science databases. In addition, the reference lists of review articles pertaining to the topic were searched. No language restriction was applied. Two independent reviewers screened titles and abstracts. All articles deemed appropriate by either reviewer were included in the full-text evaluation. In case of disagreement, a referee arbitrated between the reviewers. RESULTS With 93.8% agreement prior to discussion and arbitration, 67 articles were included. On average, the size of the negative control group was 30% (mean) of the n in the experimental groups (minimum=0.0%, maximum=100%, SD=27%). The majority of studies (57 of 67) used inadequate negative controls. The whole root was covered with the sealing material in these specimens, whilst the root tip was left uncovered in the experimental groups. Consequently, leakage between outer root surface and sealing material was not controlled for. The authors of the remaining 10 communications did not state clearly how negative control assessments were performed. CONCLUSIONS Experimental investigations should be performed to assess the routes of microbial leakage in two-chamber models.
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Affiliation(s)
- D-K Rechenberg
- Department of Preventive Dentistry, Periodontology and Cariology, University of Zürich Center of Dental Medicine, Zürich
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