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Knapp J, Kirkpatrick T, Ontiveros JC, Jaramillo DE, Kim HC, Jeong JW. Efficacy of root-end filling techniques using premixed putty type bioceramic cements: an ex vivo study. Clin Oral Investig 2024; 28:365. [PMID: 38849637 DOI: 10.1007/s00784-024-05759-3] [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: 03/06/2024] [Accepted: 05/30/2024] [Indexed: 06/09/2024]
Abstract
OBJECTIVES Currently, premixed putty-type bioceramic cements (PPBCs) have become popular materials for root-end fillings. This study investigated three root-end filling techniques using PPBCs and calcium silicate-based sealers including EDTA pretreatment. MATERIALS AND METHODS Ninety root segments were prepared and standardized with an artificial fin and lateral canal, and assigned to three groups (n = 30). Root-end fillings were placed using BC-RRM Putty alone (Group PA), injection of BC sealer followed by BC-RRM Putty (Lid Technique: Group LT) or BC-RRM Putty with BC sealer coating (Deep putty packing technique: Group DP). Half of each group was pretreated with 17% EDTA. The radiographic images of the specimens were assessed by five graders and push-out bond strength tests were conducted. The data were analyzed with a general linear model including two-way ANOVA and chi-square test at a significance level of 5%. RESULTS DP approach demonstrated significantly higher bond strength than LT (P < 0.05). However, there was no statistically significant difference in bond strength between PA and either DP or LT. EDTA pretreatment had no significant effect on push-out bond strength. Radiographically, for the main canal, PA and DP scored significantly higher than LT. In the fin, PA scored significantly higher than others (P < 0.05). CONCLUSION Our study highlights variations in root-end filling techniques. Injecting a bulk of bioceramic sealer before the placement of PPBCs may reduce bond strength and radiopacity. The application of PPBCs alone or in the deep putty technique demonstrates potential for favorable outcomes. EDTA pretreatment did not enhance bond-strength. CLINICAL RELEVANCE Careful selection and application of bioceramic materials and techniques in root-end fillings may influence the outcome of endodontic root-end surgery. When PPBCs and calcium silicate-based sealers are used together for root-end fillings, sealer followed by deep putty application may offer improved bond strength and radiographic fill compared to the lid technique.
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Affiliation(s)
- Jason Knapp
- Department of Endodontics, School of Dentistry, The University of Texas Health Science Center at Houston, 7500 Cambridge Street, Suite 6400, Houston, TX, USA
| | - Timothy Kirkpatrick
- Department of Endodontics, School of Dentistry, The University of Texas Health Science Center at Houston, 7500 Cambridge Street, Suite 6400, Houston, TX, USA
| | - Joe C Ontiveros
- Department of Restorative Dentistry and Prosthodontics, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - David E Jaramillo
- Department of Endodontics, School of Dentistry, The University of Texas Health Science Center at Houston, 7500 Cambridge Street, Suite 6400, Houston, TX, USA
| | - Hyeon-Cheol Kim
- Department of Conservative Dentistry, School of Dentistry, Dental Research Institute, Dental and Life Science Institute, Pusan National University, Geumo-ro 20, Mulgeum, Yangsan, Gyeongsangnam-do, 50612, South Korea.
| | - Ji Wook Jeong
- Department of Endodontics, School of Dentistry, The University of Texas Health Science Center at Houston, 7500 Cambridge Street, Suite 6400, Houston, TX, USA.
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Mohan N, Arumugam S, Alaguselvaraj J, Selvaraj K, Chonat A, Kumar KK. Comparative Evaluation of the Apical Sealability of AH Plus and RealSeal SE Using 5.25% Sodium Hypochlorite with 17% EDTA and 10% Citric Acid as Irrigants-An In Vitro Study. JOURNAL OF PHARMACY AND BIOALLIED SCIENCES 2024; 16:S1754-S1760. [PMID: 38882731 PMCID: PMC11174235 DOI: 10.4103/jpbs.jpbs_1122_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 11/28/2023] [Accepted: 11/30/2023] [Indexed: 06/18/2024] Open
Abstract
Background Apical microleakage is considered to be a common reason for the clinical failure of endodontic therapy. Three dimensional sealing of the root canal is one of the main goals of endodontic treatment and is essential for preventing reinfection of the canal and for preserving the health of the periapical tissues, Recently Epoxy resin sealers have been used because of their reduced solubility apical seal and micro-retention to root dentine. Aim and Objective This in vitro study was done to evaluate and compare the apical sealability of AH Plus and RealSeal SE using 5.25% sodium hypochlorite with 17% EDTA and 10% citric acid as irrigants. Materials and methods: 44 single-rooted premolars were selected and the teeth are randomly divided into 4 groups (n=10) and 2 control groups (n=2). The extent of dye penetration, from the apical to the coronal part of the root canal, was assessed using a stereomicroscope at 10x magnification for all groups.One-way ANOVA and Kruskal-Wallis tests were performed to compare statistically significant differences among the groups, using SPSS software version 10.0. Results Group IV (Citric acid + RealSeal SE) showed a statistically lower mean microleakage when compared to all other groups. Conclusion From, the present study, it was concluded that, RealSeal SE sealer with 10% citric acid as irrigant (group IV) showed better apical sealability followed by RealSeal SE sealer with 17% EDTA as irrigant (group III), when compared to AH Plus groups which showed least sealability.
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Affiliation(s)
- Naveen Mohan
- Department of Dental Surgery, Government Tiruvannamalai Medical College and Hospital, Tamil Nadu, India
| | - Selvabalaji Arumugam
- Department of Pediatric and Preventive Dentistry, Adhiparasakthi Dental College and Hospital, Melmaruvathur, Chengalpattu, Tamil Nadu, India
| | | | - Kandanraj Selvaraj
- Department of Dental Surgery, Government Rajaji Hospital, Madurai, Tamil Nadu, India
| | - Anagha Chonat
- Department of Pediatric and Preventive Dentistry, Indira Gandhi Institute of Dental Sciences, SriBalaji Vidhyapeeth, Deemed to be University, Puducherry, India
| | - K Krishna Kumar
- Department of Pediatric and Preventive Dentistry, Government Dental College and Hospital, Cuddalore, Tamil Nadu, India
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Teoh YY, Liew KY, Siao J, Wong S, Chandler N, Bogen G. The effects of chelation on the intratubular penetration depth of mineral trioxide aggregate. AUST ENDOD J 2023; 49:483-491. [PMID: 37200356 DOI: 10.1111/aej.12766] [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: 02/04/2022] [Revised: 08/29/2022] [Accepted: 04/26/2023] [Indexed: 05/20/2023]
Abstract
The penetration depth and extent of mineral trioxide aggregate (MTA) crystallisation into dentinal tubules at 2, 4 and 6 weeks after chelation and MTA obturation were investigated. Standardised 12 mm human root specimens (45) were prepared with NiTi rotary files using 4% NaOCl irrigation. They were randomly allocated to three irrigants (n = 15: 4% NaOCl, 15% ethylenediaminetetraacetic acid or Edgemix) and obturated with sodium fluorescein tagged ProRoot MTA. One millimetre thick apical, middle and coronal sections were examined using confocal laser scanning microscopy to determine MTA penetration depth and area. Depths varied from 352 to 1821 μm at 6 weeks depending on section level and were unaffected by chelation. No differences (p > 0.05) were found in mean maximum penetration depth or dentine area (%) between the 3 irrigants at all time intervals. MTA mineralisation penetrated up to 90% of dentinal tubules and can extend to the cementum in roots with patent, non-infected tubules.
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Affiliation(s)
- Yu-Yao Teoh
- School of Dentistry, University of Queensland, Brisbane, Queensland, Australia
| | - Khai Yi Liew
- School of Dentistry, University of Queensland, Brisbane, Queensland, Australia
| | - Jethro Siao
- School of Dentistry, University of Queensland, Brisbane, Queensland, Australia
| | - Shaun Wong
- School of Dentistry, University of Queensland, Brisbane, Queensland, Australia
| | - Nicholas Chandler
- Department of Oral Rehabilitation, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
| | - George Bogen
- School of Dentistry, University of Queensland, Brisbane, Queensland, Australia
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Chew ST, Eshak Z, Al-Haddad A. Evaluation of interfacial adaptation and penetration of bioceramic-based sealers in oval root canals: A confocal laser scanning microscope study. Microsc Res Tech 2023; 86:754-761. [PMID: 37078493 DOI: 10.1002/jemt.24323] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 02/06/2023] [Accepted: 03/26/2023] [Indexed: 04/21/2023]
Abstract
To assess the interfacial adaptation and penetration depth of three different bioceramic-based sealers (CeraSeal, EndoSeal MTA, Nishika Canal Sealer BG) compared to an epoxy resin-based sealer (AH Plus) in oval root canals. Fourty extracted single-rooted mandibular premolar with oval canal were prepared and randomly allocated according to the obturation into; CeraSeal, EndoSeal MTA, Nishika Canal Sealer BG and AH Plus. The roots were sectioned at 3, 6 and 9 mm from the apex. The sealer adaptation and the penetration depth were evaluated under confocal laser scanning microscope. One-way ANOVA and Repeated measure ANOVA were used to statistically analyze the data. Nishika Canal Sealer BG showed significantly higher sealer adaptation than EndoSeal MTA (P < .001) at apical and middle thirds. Meanwhile, AH Plus showed significantly higher sealer adaptation than EndoSeal MTA (P = 0.011) at middle third. For sealer penetration, Nishika Canal Sealer BG showed the longest sealer penetration that was significant compared to AH Plus (P < .001) and EndoSeal MTA (P < .001) whereas CeraSeal was significantly higher than EndoSeal MTA (P = 0.029) at coronal third. For AH Plus, there was a significant less sealer penetration at coronal third compared to apical and middle thirds (P < .05). Whereas for EndoSeal MTA, the coronal third has significant less penetration compared to the middle third (P = 0.032). Endoseal has the lowest adaptation and penetration depth. Nishika Canal Sealer BG has better adaptation and penetration depth using single cone obturation technique in oval canal. RESEARCH HIGHLIGHTS: All the tested root canal sealers have some percentage of gaps and vary in their penetration capability into dentinal tubules. Nishika Canal Sealer BG has significantly better sealer adaptation to root dentinal walls than that of EndoSeal MTA at the apical and middle third but not significantly different from other type of sealers used. Nishika Canal Sealer BG has significantly better penetration depth than AH Plus and EndoSeal MTA at the coronal third of radicular dentin.
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Affiliation(s)
- Soo Teng Chew
- Department of Restorative Dentistry, Faculty of Dentistry, National University of Malaysia, Kuala Lumpur, Wilayah Persekutuan Kuala Lumpur, Malaysia
| | - Zolkapli Eshak
- Department of Pharmacology and Pharmaceutical Chemistry, Faculty of Pharmacy, University Teknologi MARA Puncak Alam, Selangor, Malaysia
| | - Afaf Al-Haddad
- Department of Conservative Dentistry, Faculty of Dentistry, MAHSA University, Selangor, Malaysia
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Shahbaz S, Iftekhar H, Alam S, Mishra SK. Comparative evaluation of the apical leakage of different bioceramic retrofilling materials with and without smear layer: A stereomicroscopic study. Indian J Dent Res 2022; 33:46-51. [PMID: 35946244 DOI: 10.4103/ijdr.ijdr_313_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Objective Present in-vitro study aimed to evaluate the apical leakage of different bioceramic retrofilling materials with and without smear layer. Materials and Methods : Sixty human single-rooted teeth were decoronated at a standardized root length of 13 mm, chemo-mechanically prepared and obturated. After obturation, root-end resection was done and root-end cavities were prepared using ultrasonic tips. The specimens with prepared retro cavities were randomly assigned into 2 groups (n = 30) based on the smear layer removal protocol used. Each group was further subdivided into 3 subgroups (n = 10) based on the bioceramic retrofilling material MTA (Mineral Trioxide Aggregate; Proroot Dentsply/Tulsa), CEM (Calcium-Enriched Mixture; Bionique Dent, Tehran) and ERRM (EndoSequence® Root Repair Material; Brasseler USA, Savannah, GA). The extension of dye (2% Rhodamine B) penetration was measured in millimetre using a stereomicroscope at 10× zoom. Results were statistically analysed using one-way ANOVA (analysis of variance) test and unpaired Student's t test. Results In the presence of smear layer, MTA demonstrated maximum mean apical leakage value (1.70 ± 0.30), followed by CEM (1.40 ± 0.37) and ERRM (1.40 ± 0.23), which was statistically not significant. Without the smear layer, ERRM demonstrated the least mean apical leakage value, which was statistically significant as compared with CEM (P <.05) and MTA (P <.01). Conclusion(s) : All bioceramic retrofilling materials demonstrated apical leakage irrespective of the presence or absence of the smear layer. The presence of a smear layer is beneficial for the sealing ability of MTA and CEM, whereas, the absence of the smear layer is advocated while using ERRM.
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Affiliation(s)
- Sheikh Shahbaz
- Department of Conservative Dentistry and Endodontics, Dr ZADC, AMU, Aligarh, Uttar Pradesh, India
| | - Huma Iftekhar
- Department of Conservative Dentistry and Endodontics, Dr ZADC, AMU, Aligarh, Uttar Pradesh, India
| | - Sharique Alam
- Department of Conservative Dentistry and Endodontics, Dr ZADC, AMU, Aligarh, Uttar Pradesh, India
| | - Surendra Kumar Mishra
- Department of Conservative Dentistry and Endodontics, Dr ZADC, AMU, Aligarh, Uttar Pradesh, India
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Zancan RF, Di Maio A, Tomson PL, Duarte MAH, Camilleri J. The presence of smear layer affects the antimicrobial action of root canal sealers. Int Endod J 2021; 54:1369-1382. [PMID: 33763882 DOI: 10.1111/iej.13522] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 03/19/2021] [Accepted: 03/22/2021] [Indexed: 11/29/2022]
Abstract
AIM To assess the chemical and microstructural characteristics of dentine after the use of two irrigation protocols and correlate this with the antimicrobial properties of hydraulic calcium silicate cement (HCSC) sealers and changes to the dentine structure/chemistry after sealer placement. METHODOLOGY Two irrigation protocols - Protocol A using 2% NaOCl used 5 mL/5 min and Protocol B with 2% NaOCl (5 mL/5 min) followed by 17% EDTA (5 mL/3 min) - were used to prepare dentine. The chemical and microstructural changes following irrigation were assessed by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and Fourier transform infrared (FT-IR) spectroscopy (n = 5) on dentine obtained from the mid-root and coronal parts of extracted human teeth. Four sealers (AH Plus, BioRoot, MTA Fillapex, TotalFill) were characterized by SEM/EDS (n = 3). The ability of the sealers to eradicate intratubular Enterococcus faecalis biofilms was assessed by live/dead dye and confocal laser scanning microscopy to measure the percentage of living cells. The effect of combined irrigation and root filling on dentine was assessed by SEM and EDS analysis (n = 5). Statistical analysis was undertaken using one-way anova and a number of post hoc tests to detect intergroup differences. The F-test was used for comparison of variances in the microbiology testing. RESULTS The use of NaOCl alone left the smear layer intact, with traces of chlorine remaining on dentine. The use of BioRoot sealer restored the calcium levels of dentine which had been depleted by the irrigation with EDTA. BioRoot exhibited antimicrobial properties against intratubular bacteria even in the presence of smear layer (Protocol A). Smear layer removal improved the bactericidal effect of all sealers and Ca2+ leaching. The use of a chelating agent was important for the intratubular sealer penetration for AH Plus but not the other sealers. CONCLUSION The removal of smear layer was necessary for penetration of AH Plus into the dentinal tubules. BioRoot was a more effective sealer in reducing the bacterial load in the dentinal tubules than the other materials tested and the presence of smear layer did not affect its activity.
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Affiliation(s)
- R F Zancan
- Department of Restorative Dentistry, Dental Materials and Endodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - A Di Maio
- School of Biosciences, University of Birmingham, Birmingham, UK
| | - P L Tomson
- School of Dentistry, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - M A H Duarte
- Department of Restorative Dentistry, Dental Materials and Endodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - J Camilleri
- School of Dentistry, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
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Ali N, Saha SG, Vijayvargiya P, Bhardwaj A, Shrivastava S, Sharma V, Sachdeva HS. Comparative evaluation of push-out bond strength of gutta-percha using different sealers with lateral condensation and thermoplasticized obturation technique: An in vitro study. J Conserv Dent 2020; 22:593-597. [PMID: 33088072 PMCID: PMC7542076 DOI: 10.4103/jcd.jcd_553_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 05/12/2019] [Accepted: 04/10/2020] [Indexed: 12/04/2022] Open
Abstract
Aim: The study aimed to evaluate and compare the push-out bond strength of gutta-percha using AH plus, Endosequence BC, and Roeko seal sealer with lateral condensation and thermoplasticized obturation technique. Materials and Methods: Sixty single-rooted premolars were instrumented and samples were randomly assigned into three groups based on the sealer used (Group A-AH Plus, Group B-Endosequence BC, Group C-Roeko Seal) which were further divided into two subgroups-A1, B1, and C1 were obturated by the lateral condensation technique and A2, B2, and C2 using the thermoplasticized technique. Each sample was sectioned horizontally using a diamond disc, representing apical, middle, and coronal thirds, respectively. Root segments were then mounted on an acrylic block, and push-out bond strength of each sample was tested using the universal testing machine. Statistical Analysis: One-way ANOVA, Tukey's test, and unpaired t-test. Results: For mandibular premolar teeth with a single canal using lateral condensation technique, the highest push-out bond strength was found in the A1 group (7.30 ± 0.61 MPa) at the apical level. While using the thermoplasticized technique, the highest push-out bond strength was found in the B2 group (3.71 ± 0.81 MPa) at the apical level. Overall results showed that the lateral condensation technique showed significantly higher push-out bond strength than thermoplasticized technique (P < 0.028). Conclusions: The push-out bond strength of AH Plus sealer was higher than the Endosequence BC sealer and Roeko seal sealer. Lateral condensation technique has shown higher push-out bond strength than the thermoplasticized technique.
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Affiliation(s)
- Naushad Ali
- Department of Conservative Dentistry and Endodontics, College of Dental Science and Hospital, Indore, Madhya Pradesh, India
| | - Suparna Ganguly Saha
- Department of Conservative Dentistry and Endodontics, College of Dental Science and Hospital, Indore, Madhya Pradesh, India
| | - Prashansa Vijayvargiya
- Department of Conservative Dentistry and Endodontics, College of Dental Science and Hospital, Indore, Madhya Pradesh, India
| | - Anuj Bhardwaj
- Department of Conservative Dentistry and Endodontics, College of Dental Science and Hospital, Indore, Madhya Pradesh, India
| | - Saurabh Shrivastava
- Department of Prosthodontics, Mansarovar Dental College, Bhopal, Madhya Pradesh, India
| | - Vini Sharma
- Department of Conservative Dentistry and Endodontics, College of Dental Science and Hospital, Indore, Madhya Pradesh, India
| | - Harmeet Singh Sachdeva
- Department of Conservative Dentistry and Endodontics, College of Dental Science and Hospital, Indore, Madhya Pradesh, India
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Push-Out Bond Strength and SEM Evaluation in Roots Filled with Two Different Techniques Using New and Conventional Sealers. MATERIALS 2018; 11:ma11091620. [PMID: 30189631 PMCID: PMC6163187 DOI: 10.3390/ma11091620] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 08/23/2018] [Accepted: 09/03/2018] [Indexed: 11/17/2022]
Abstract
The aim of this study was to evaluate the influence of calcium-silicate-based sealer (Endosequence-BC-Sealer) in roots, filled with thermo-plasticized injectable technique aided by Calamus-Flow-Delivery-System, on bond strength to radicular dentin, in comparison with conventional epoxy-resin-based sealer (AH-Plus) along with cold-lateral-compaction technique. Root canals of mandibular-premolar teeth (n = 80) were instrumented using Protaper Universal rotary files and were randomly divided into four experimental groups (n = 20) as follows: (1) AH-Plus + cold-lateral-compaction technique; (2) Endosequence-BC-Sealer + cold-lateral-compaction technique; (3) AH-Plus + thermo-plasticized injectable technique; and (4) Endosequence-BC-Sealer + thermo-plasticized injectable technique. Horizontal disc shaped samples from each group (n = 60/group) were obtained and push-out bond strength testing was performed at a cross-head speed of 0.5 mm/min. Data were analyzed statistically using nonparametric Kruskal-Wallis analysis and Mann-Whitney test (p < 0.001). The statistical analysis revealed a significant difference amongst the groups (p < 0.001). The highest bond strength values were found in group 1 compared with all the other experimental groups (p < 0.001), whereas the lowest bond strength values were found in group 4 (p < 0.001). It was concluded that thermo-plasticized injectable technique with Calamus-Flow-Delivery-System lowered the bond strengths of the sealers, especially Endosequence-BC-Sealer. Therefore, this technique is not recommended to calcium-silicate-based sealers. Further studies are needed to confirm the findings of this study.
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Surgical endodontics: are the guidelines being followed? A pilot survey. Br Dent J 2018; 224:157-162. [PMID: 29371691 DOI: 10.1038/sj.bdj.2018.75] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/17/2017] [Indexed: 11/09/2022]
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Ballal NV, Ulusoy Öİ, Chhaparwal S, Ginjupalli K. Effect of novel chelating agents on the push-out bond strength of calcium silicate cements to the simulated root-end cavities. Microsc Res Tech 2017; 81:214-219. [PMID: 29130556 DOI: 10.1002/jemt.22969] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 10/20/2017] [Accepted: 10/31/2017] [Indexed: 12/23/2022]
Abstract
To compare the effects of different chelating agents on the push-out bond strength of calcium silicate-based cements to the simulated root-end cavities. Root-end cavities were prepared on the roots of fifty extracted maxillary anterior teeth. The specimens were then randomly divided into 5 groups (n = 10) based on the final irrigation regimen: Group 1: 17% EDTA, Group 2: 7% maleic acid, Group 3: QMix, Group 4: 2.25% peracetic acid (PAA), Group 5: 0.9% saline. Then, the samples from each group were subdivided into two groups (n = 5) based on the apical filling material. In group 1, root-end cavities of all samples were filled with Biodentine and in group 2, with MTA. Each sample was horizontally sectioned to produce two discs of ∼1 mm thick per specimen. The maximum load required for the dislodgement of 100 retrofillings was recorded. The specimens were examined under scanning electron microscope after debonding to assess the type of bond failure. Data were statistically analyzed using Kruskal Wallis and Mann Whitney U tests. Irrigation with saline resulted in higher bond strength compared to the other irrigants in the retrograde cavities obturated with MTA or Biodentine (p < .05). In MTA group, there was no significant difference between the test irrigants (p > .05). EDTA and PAA groups showed higher dislodgement resistance values than the other test irrigants, when Biodentine was used as a filling. The type of irrigation solution influences the bond strength of the root-end fillings.
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Affiliation(s)
- Nidambur Vasudev Ballal
- Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences, Manipal University, Karnataka, India
| | - Özgür İlke Ulusoy
- Department of Endodontics, Faculty of Dentistry, Gazi University, Emek, Ankara, Turkey
| | - Shubha Chhaparwal
- Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences, Manipal University, Karnataka, India
| | - Kishore Ginjupalli
- Department of Dental Materials, Manipal College of Dental Sciences, Manipal University, Manipal, Karnataka, India
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11
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Effects of smear layer removal agents on the physical properties and microstructure of mineral trioxide aggregate cement. J Dent 2017; 66:32-36. [PMID: 28867660 DOI: 10.1016/j.jdent.2017.08.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 08/12/2017] [Accepted: 08/30/2017] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE To compare the effect of QMix (Dentsply Sirona), 7% maleic acid (MA), and 17% ethylenediaminetetraacetic acid (EDTA) on the microhardness, flexural strength and microstructure of mineral trioxide aggregate (MTA; ProRoot MTA, Dentsply Sirona). METHODS Forty MTA specimens were divided into four groups: [I] QMix [II] 7% MA [III] 17% EDTA and [IV] distilled water (control). After treatment with 5mL of the respective solution for 1min, the specimens were tested for microhardness using a Knoop hardness tester. Forty additional specimens were similarly treated and evaluated for the flexural strength using a universal testing machine. For microstructure evaluation, MTA specimens were treated in a similar manner and examined by X-ray diffractometry and scanning electron microscopy (SEM). RESULTS For microhardness, there were no differences between distilled water, QMix and EDTA groups. However, MTA exposed to distilled water had higher microhardness than MA. When compared with QMix and EDTA, MA had lower microhardness; there was no difference between EDTA and QMix. For flexural strength, distilled water group had higher flexural strength than the other agents. There were no differences between EDTA vs MA and EDTA vs QMix. Specimens treated with QMix had higher flexural strength than MA. X-ray diffraction indicated that EDTA inhibited hydration of MTA. For SEM, all the tested agents altered the microstructure of MTA when compared to distilled water. CONCLUSION MA had more detrimental effect on the physical properties of MTA and EDTA was more detrimental to the hydration of MTA. CLINICAL SIGNIFICANCE The present study highlights the effect of newer chelating agents on the physical properties and microstructure of MTA. Preventing the deterioration of MTA is important for its long term success in endodontic procedures.
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12
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Küçükkaya Eren S, Görduysus MÖ, Şahin C. Sealing ability and adaptation of root-end filling materials in cavities prepared with different techniques. Microsc Res Tech 2017; 80:756-762. [DOI: 10.1002/jemt.22861] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 01/14/2017] [Accepted: 02/18/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Selen Küçükkaya Eren
- Faculty of Dentistry, Department of Endodontics; Hacettepe University; Ankara Turkey
| | - Mehmet Ömer Görduysus
- Faculty of Dentistry, Department of Endodontics; Hacettepe University; Ankara Turkey
- College of Dental Medicine, Department of Preventive and Restorative Dentistry; University of Sharjah; Sharjah United Arab Emirates
| | - Cem Şahin
- School of Health Services, Dental Prosthetics Technology; Hacettepe University; Ankara Turkey
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Eskandarinezhad M, Shahveghar-Asl N, Sharghi R, Shirazi S, Shakouie S, Milani AS, Balaei E. Sealing efficacy of mineral trioxide aggregate with and without nanosilver for root end filling: An in vitro bacterial leakage study. J Clin Exp Dent 2017; 9:e27-e33. [PMID: 28149459 PMCID: PMC5268117 DOI: 10.4317/jced.53070] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 05/14/2016] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND Various materials have been added to mineral trioxide aggregate to enhance its properties. This study was aimed to compare the sealing efficacy of MTA with and without nanosilver using bacterial leakage approach. MATERIAL AND METHODS Seventy canine teeth were prepared and obturated. Then, after apical resection, the root-end cavities were prepared by ultrasonic retrotips. Teeth were randomly divided into 4 groups containing two experimental groups (n=30) and two negative and positive controls (n=5). In group 1 and 2, root-end cavities were respectively filled with MTA and MTA with nanosilver (by 1% weight). Leakage assessment was carried out by bacterial leakage apparatus with Enterococcus faecalis species. Leakage comparison between experimental groups was done using Mann-Whitney test by Spss 16 software at significancy level of 0.05. RESULTS The median bacterial leakages for MTA and MTA with nanosilver were 19 and 2, respectively. The mean bacterial leakages for MTA and MTA with nanosilver were 30.06±28.67 and 9.66±14.25, respectively. Mann-Whitney test indicated that there was a significant difference in bacterial leakage day between two experimental groups (P=0.002). CONCLUSIONS Based on the findings of this in-vitro bacterial leakage study, adding nanosilver to MTA decreased its sealing ability. Key words:Root canal therapy, root canal obturation, root canal filling materials, nanosilver, MTA.
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Affiliation(s)
- Mahsa Eskandarinezhad
- Assistant professor, Department of Endodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Naiemeh Shahveghar-Asl
- Post-graduate student, Department of Pediatric Dentistry, Faculty of Dentistry, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Reza Sharghi
- Assistant professor, Dental Caries Prevention Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Sajjad Shirazi
- Research Fellow and Lecturer, Dental and Periodontal Research Center, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran; Assistant Professor, Department of Community Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sahar Shakouie
- Assistant professor, Department of Endodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amin-Salem Milani
- Assistant professor, Department of Endodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Esrafil Balaei
- Assistant Professor, Department of Community Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
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Bidar M, Sadeghalhoseini N, Forghani M, Attaran N. Effect of the smear layer on apical seals produced by two calcium silicate-based endodontic sealers. J Oral Sci 2016; 56:215-9. [PMID: 25231148 DOI: 10.2334/josnusd.56.215] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
We compared the apical seals of two new calcium silicate-based sealers (iRoot SP and MTA Fillapex) in the presence and absence of a smear layer. Eighty-two human premolars were prepared and randomly divided into four groups. In groups 1 and 3, the smear layer was retained. In groups 2 and 4, the root canals were irrigated with EDTA to remove the smear layer. Canals were filled using gutta-percha/iRoot SP (in groups 1 and 2) or obturated with gutta-percha/MTA Fillapex (in groups 3 and 4). Fluid filtration was used to evaluate apical microleakage. The presence of the smear layer had no significant effect on the sealing properties of the filling materials, except for iRoot SP at 2 weeks (P = 0.007). There was significantly less microleakage with iRoot SP than with MTA Fillapex (P = 0.025 at 2 weeks; P < 0.001 at 3 months). Leakage decreased significantly over time in all specimens, except in group 2 (P = 0.473). In conclusion, removal of the smear layer had no adverse effect on the sealing properties of calcium silicate-based sealers. In addition, the sealing ability of iRoot SP was superior to that of MTA Fillapex.
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Affiliation(s)
- Maryam Bidar
- Dental Research Center, Department of Endodontics, Faculty of Dentistry, Mashhad University of Medical Sciences
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15
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Agrafioti A, Tzimpoulas N, Chatzitheodoridis E, Kontakiotis EG. Comparative evaluation of sealing ability and microstructure of MTA and Biodentine after exposure to different environments. Clin Oral Investig 2015; 20:1535-40. [PMID: 26541151 DOI: 10.1007/s00784-015-1638-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 10/23/2015] [Indexed: 12/26/2022]
Abstract
OBJECTIVES The aim of this study was to evaluate the sealing ability and morphological microstructure of Biodentine in comparison to ProRoot mineral trioxide aggregate (MTA) after storage in an acidic environment. MATERIALS AND METHODS Biodentine and ProRoot MTA were prepared and packed into the canal lumen of dentin disks. Twenty specimens of each material were further randomly divided into two groups according to the storage media: group A: materials with saline as storage medium; group B: materials with citric acid buffered at pH 5.4 as storage medium. The sealing ability was evaluated at 1, 3, 6, and 24 h and 1 or 3 months, using a fluid transport model for quantitative analysis of endodontic microleakage. The morphological microstructures of the materials were also evaluated using scanning electron microscopy. RESULTS During the first 24 h, MTA showed greater fluid transport values than Biodentine in both environments. At the 3-month measurement, when the materials were stored in saline, MTA showed greater ability to prevent fluid movement than Biodentine (p < 0.0001). However, when the materials were stored in an acidic environment, no statistical significant difference was found after 3 months. After storage in saline, both materials showed an uneven crystalline surface with similar hexagonal crystals. The microstructure of Biodentine changed after exposure to citric acid, showing a relatively smooth surface with more spheroidal crystals. CONCLUSIONS The exposure to an acidic environment, within the limits of this study, seems to result in morphological changes of Biodentine in a different manner than MTA. MTA shows good ability to prevent fluid movement over time, in both environments. The ability of Biodentine to prevent fluid movement over time was enhanced in the acidic environment. CLINICAL RELEVANCE The findings of the present study could imply that both materials are indicated for use in an acidic environment.
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Affiliation(s)
- Anastasia Agrafioti
- Department of Endodontics, School of Dentistry, National and Kapodistrian University of Athens, 2 Thivon Str., 11527, Goudi, Athens, Greece
| | - Nestor Tzimpoulas
- Division of Endodontology, Department of Cariology, Endodontology and Pedodontology, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University, Amsterdam, The Netherlands
| | - Elias Chatzitheodoridis
- Laboratory of Mineralogy, Petrology and Economic Geology, Department of Geological Sciences, School of Mining and Metallurgical Engineering, National Technical University of Athens, Athens, Greece
| | - Evangelos G Kontakiotis
- Department of Endodontics, School of Dentistry, National and Kapodistrian University of Athens, 2 Thivon Str., 11527, Goudi, Athens, Greece.
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16
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Efficacy of Biodentine as an Apical Plug in Nonvital Permanent Teeth with Open Apices: An In Vitro Study. BIOMED RESEARCH INTERNATIONAL 2015; 2015:359275. [PMID: 26436090 PMCID: PMC4575981 DOI: 10.1155/2015/359275] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 07/28/2015] [Indexed: 11/17/2022]
Abstract
The aim of this study was to evaluate the apical microleakage of Biodentine and MTA orthograde apical plugs and to compare the effect of thickness of these biomaterials on their sealing ability. A total of eighty maxillary anterior teeth were used. The apices were removed by cutting with a diamond disc (Jota, Germany) 2 mm from the apical root end in an attempt to standardize the working length of all specimens to 15 ± 1 mm. Both materials were placed in 1–4 mm thickness as apical plugs root canal. Root canal leakage was evaluated by the fluid filtration technique. One-way ANOVA was used in order to determine normality of dispersal distribution of parameters; thereafter, results were analyzed by Kolmogorov-Smirnov test. Overall, between microleakage values of MTA and Biodentine regardless of apical plug thickness, no difference was observed. In terms of plug thickness, a statistically significant difference was observed between the subgroups of MTA and Biodentine (p < 0.05). The apical sealing ability of Biodentine was comparable to MTA at any apical plug thickness.
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17
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Fahmy SH, El Gendy AAH, El Ashry SH. Dentin wettability enhancement for three irrigating solutions and their effect on push out bond strength of gutta percha / AH Plus. J Clin Exp Dent 2015; 7:e237-42. [PMID: 26155339 PMCID: PMC4483330 DOI: 10.4317/jced.51865] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Accepted: 01/25/2015] [Indexed: 12/04/2022] Open
Abstract
Background The aim of this study was to investigate the effect of wettability enhancement for 17% EDTA, 2.5% sodium hypochlorite and 7% maleic acid solutions on push out bond strength of gutta percha /AH Plus to root dentin. Material and Methods One hundred and eight extracted single rooted human lower premolars were instrumented up to Protaper Universal F5 then irrigated with 3ml of 2.5% NaOCl after each file. Irrigants were prepared and a pilot study for determination of Tween 80 concentration yielding the lowest surface tension value in every solution was conducted. Samples were randomly divided into a control group and two experimental groups (17% EDTA and 7% Maleate), further split into eight subgroups (n=12), according to Tween 80 implementation sequence. Roots were obturated using gutta percha and AH plus by lateral condensation. Bond strength was measured by push out test. Mode of failure was then evaluated quantitatively by stereomicroscopy. Data were statistically analyzed using one way ANOVA followed by Tukey-Kramer for multiple comparisons. Results Control group showed the lowest values. Maleic acid subgroups showed significantly higher overall values than EDTA subgroups (P<0.05). Protocols implementing surfactant containing NaOCl showed significantly lower values than plain counterparts. Failure pattern was predominantly cohesive for plain regimens and the ones implementing Tween 80 in maleic acid solutions with plain NaOCl. Conclusions Tween 80 addition to demineralizing irrigants increased the bond strength values. Surfactant containing NaOCl solutions yielded lower bond strength than plain ones. Key words:Wettability enhancement for three irrigants vs. corresponding gutta percha/AH Plus bonding.
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Affiliation(s)
- Sarah-Hossam Fahmy
- Assistant Lecturer at the Endodontic Department, Faculty of Dentistry, Ain Shams University
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18
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Forghani M, Mashhoor H, Rouhani A, Jafarzadeh H. Comparison of pH changes induced by calcium enriched mixture and those of calcium hydroxide in simulated root resorption defects. J Endod 2014; 40:2070-3. [PMID: 25442726 DOI: 10.1016/j.joen.2014.09.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 09/12/2014] [Accepted: 09/16/2014] [Indexed: 10/24/2022]
Abstract
INTRODUCTION External resorption usually occurs after dental trauma and the loss of root cementum. Because it has the ability to induce alkaline pH, calcium hydroxide is used in treatment of external resorption, which is reportedly not free from disadvantages. Driven by such understanding, the aim of this in vitro study was to compare the pH changes induced by calcium enriched mixture (CEM) and those of calcium hydroxide in simulated root resorption defects. METHODS Twenty-one paired extracted human premolars were cut to the length of 14 mm. Root canal preparation was performed by using ProTaper rotary system. Cavities of 0.7-mm depth and 1.4-mm diameter were prepared on the external root surface, 5 mm from the apex. Half of the teeth were filled with CEM and the other half with calcium hydroxide. Five premolars were also assigned as the negative control group and filled with normal saline. To be assured of the filling quality, a radiograph was obtained from each tooth. Subsequently, pH of the cavity was measured with a microelectrode at 20-minute, 3-hour, and 1-, 7-, 14-, 21-, and 28-day intervals after filling. RESULTS Mean pH in the CEM and in the calcium hydroxide groups were significantly varied during the study period, with pH of the calcium hydroxide group significantly higher than that of CEM in all of the measurements. However, no significant difference was observed between the pH of the calcium hydroxide group and that of the control group at the 7-day and 14-day measurements and between those of the CEM group and the control group at days 7, 21, and 28. CONCLUSIONS In comparison with calcium hydroxide, CEM hardly maintained alkaline pH during the first month of use, and so CEM may be an inappropriate material in treatment of external root resorption.
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Affiliation(s)
- Maryam Forghani
- Dental Materials Research Center, Faculty of Dentistry, Department of Endodontics, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Armita Rouhani
- Dental Research Center, Faculty of Dentistry, Department of Endodontics, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hamid Jafarzadeh
- Dental Research Center, Faculty of Dentistry, Department of Endodontics, Mashhad University of Medical Sciences, Mashhad, Iran.
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19
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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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20
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Samiei M, Pakdel SMV, Rikhtegaran S, Shakoei S, Ebrahimpour D, Taghavi P. Scanning electron microscopy comparison of the cleaning efficacy of a root canal system by Nd:YAG laser and rotary instruments. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2014; 20:1240-1245. [PMID: 24887536 DOI: 10.1017/s1431927614000981] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This study evaluated the cleaning efficacy of a root canal system by Nd:YAG laser and rotary instruments. Sixty single-rooted human teeth were divided into four experimental groups (n=15). In the first group the teeth were prepared with a step-back technique using conventional K-files. In the second and third groups, tooth preparation was carried out using Nd:YAG laser and rotary NiTi instruments, respectively. Teeth in the fourth group were prepared by combined laser and rotary methods. The smear layer remaining on canal walls was then assessed by scanning electron microscopy in the coronal, middle, and apical portions. The comparison of smear layer removal efficacy between groups was carried out by Kruskal-Wallis and Mann-Whitney U tests. The mean grades of smear layer removal in rotary-laser, rotary, laser and step-back techniques were 1.34 ± 0.18, 2.2 ± 0.28, 1.91 ± 0.25, and 2.42 ± 0.19, respectively. On the whole, differences between rotary-laser and rotary groups, step-back, and the three other techniques (rotary, laser, and rotary-laser) were significant at p=0.034. Based on the findings of this study, the cleaning efficacy of rotary, laser, and rotary-laser techniques were better than the step-back technique and the combined laser and rotary technique was the most efficient method.
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Affiliation(s)
- Mohammad Samiei
- 1Department of Endodontics,Tabriz University of Medical Sciences,Tabriz,Iran
| | - Seyyed Mahdi Vahid Pakdel
- 2Department of Prosthodontics,Student's research committee,Tabriz University of Medical Sciences,Tabriz,Iran
| | - Sahand Rikhtegaran
- 3Department of Restorative dentistry,Tabriz University of Medical Sciences,Tabriz,Iran
| | - Sahar Shakoei
- 1Department of Endodontics,Tabriz University of Medical Sciences,Tabriz,Iran
| | - Delaram Ebrahimpour
- 4Department of Oral medicine,Tabriz University of Medical Sciences,Tabriz,Iran
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21
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Mandava J, Chang PC, Roopesh B, Faruddin MG, Anupreeta A, Uma C. Comparative evaluation of fracture resistance of root dentin to resin sealers and a MTA sealer: An in vitro study. J Conserv Dent 2014; 17:53-6. [PMID: 24554862 PMCID: PMC3915387 DOI: 10.4103/0972-0707.124140] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 09/30/2013] [Accepted: 10/08/2013] [Indexed: 12/02/2022] Open
Abstract
Background: Endodontic obturating materials should form monoblocks, reinforcing the treated teeth against fracture. Aim: To evaluate and compare the effect of two resin sealers and a MTA sealer on the fracture resistance of endodontically treated teeth. Materials and Methods: Fifty single-rooted mandibular premolars, decoronated at cemento-enamel junction, were divided into 5 groups (n = 10 each). Group 1 and group 2 served as negative and positive controls. Cleaning and shaping of root canals was done using ProTaper rotary files and 3% sodium hypochlorite irrigation. Obturation was done using AH plus (Dentsply, Germany) (group 3), MetaSEAL (Parkell, USA) (group 4), MTA Fillapex (Angeles, Brazil) (group 5) sealers and gutta-percha. Teeth were subjected to vertical loading using a universal testing machine and the point at which fracture of the roots occurred was recorded. The data was subjected to statistical analysis using one way analysis of variance (ANOVA) followed by pair-wise comparison using Tukey's Post-hoc test. Results: AH Plus showed better fracture resistance among the sealer groups. Statistically, no significant difference was found between MetaSEAL and Fillapex groups. Conclusion: MTA Fillapex as a root canal sealer was not able to reinforce the tooth against fracture.
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Affiliation(s)
- Jyothi Mandava
- Departments of Conservative Dentistry and Endodontics, GITAM Dental College, Rushikonda, Visakhapatnam, Andhra Pradesh, India
| | - Pin Chen Chang
- Departments of Conservative Dentistry and Endodontics, GITAM Dental College, Rushikonda, Visakhapatnam, Andhra Pradesh, India
| | - B Roopesh
- Departments of Conservative Dentistry and Endodontics, GITAM Dental College, Rushikonda, Visakhapatnam, Andhra Pradesh, India
| | - Md Ghazan Faruddin
- Departments of Conservative Dentistry and Endodontics, GITAM Dental College, Rushikonda, Visakhapatnam, Andhra Pradesh, India
| | - A Anupreeta
- Departments of Conservative Dentistry and Endodontics, GITAM Dental College, Rushikonda, Visakhapatnam, Andhra Pradesh, India
| | - Ch Uma
- Departments of Conservative Dentistry and Endodontics, GITAM Dental College, Rushikonda, Visakhapatnam, Andhra Pradesh, India
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Ballester-Palacios ML, Berástegui-Jimeno EM, Parellada-Esquius N, Canalda-Sahli C. Interferometric microscopy study of the surface roughness of Portland cement under the action of different irrigants. Med Oral Patol Oral Cir Bucal 2013; 18:e817-21. [PMID: 23722143 PMCID: PMC3790658 DOI: 10.4317/medoral.19082] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Accepted: 02/23/2013] [Indexed: 11/16/2022] Open
Abstract
Objectives: Some investigations suggested common Portland cement (PC) as a substitute material for MTA for endodontic use; both MTA and PC have a similar composition. The aim of this study was to determine the surface roughness of common PC before and after the exposition to different endodontic irrigating solutions: 10% and 20% citric acid, 17% ethylenediaminetetraacetic (EDTA) and 5% sodium hypochlorite.
Study Design: Fifty PC samples in the form of cubes were prepared. PC was mixed with distilled water (powder/liquid ratio 3:1 by weight). The samples were immersed for one minute in 10% and 20% citric acid, 17% EDTA and 5% sodium hypochlorite. After gold coating, PC samples were examined using the New View 100 Zygo interferometric microscope. It was used to examine and register the surface roughness and the profile of two different areas of each sample. Analysis of variance (ANOVA) was carried out, and as the requirements were not met, use was made of the Kruskal-Wallis test for analysis of the results obtained, followed by contrasts using Tukey’s contrast tests.
Results: Sodium hypochlorite at a concentration of 5% significantly reduced the surface roughness of PC, while 20% citric acid significantly increased surface roughness. The other evaluated citric acid concentration (10%) slightly increased the surface roughness of PC, though statistical significance was not reached. EDTA at a concentration of 17% failed to modify PC surface roughness. Irrigation with 5% sodium hypochlorite and 20% citric acid lowered and raised the roughness values, respectively.
Conclusions: The surface texture of PC is modified as the result of treatment with different irrigating solutions commonly used in endodontics, depending on their chemical composition and concentration.
Key words:MTA, Portland cement, citric acid, ethylenediaminetetraacetic acid, sodium hypochlorite, surface roughness.
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Affiliation(s)
- Maria L Ballester-Palacios
- Investigator of the IDIBELL Institute, Campus de Bellvitge - Pavelló de Govern Feixa Llarga s/n, 08907 - L'Hospitalet de Llobregat, Barcelona, Spain,
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23
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Push-out bond strength of three calcium silicate cements to root canal dentine after two different irrigation regimes. Clin Oral Investig 2013; 18:1141-1146. [DOI: 10.1007/s00784-013-1082-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Accepted: 07/31/2013] [Indexed: 10/26/2022]
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24
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The effect of smear layer on the push-out bond strength of root canal calcium silicate cements. Dent Mater 2013; 29:797-803. [DOI: 10.1016/j.dental.2013.04.020] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Revised: 04/26/2013] [Accepted: 04/26/2013] [Indexed: 11/20/2022]
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25
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DeAngelis L, Chockalingam R, Hamidi-Ravari A, Hay S, Lum V, Sathorn C, Parashos P. In vitro assessment of mineral trioxide aggregate setting in the presence of interstitial fluid alone. J Endod 2012; 39:402-5. [PMID: 23402516 DOI: 10.1016/j.joen.2012.11.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Revised: 11/02/2012] [Accepted: 11/06/2012] [Indexed: 11/28/2022]
Abstract
INTRODUCTION The aim of this study was to determine the ability of white mineral trioxide aggregate (MTA) Angelus (Solucoes Odontologicas, Londrina, Brazil) to set in 24 hours within the root canal in the presence of an intrinsic moisture source (interstitial fluid) alone without the need for moist cotton pellet placement. METHODS Extracted teeth were used to simulate the open apex situation. MTA was placed to a depth of 4 mm and allowed to set for 24 hours in the following test groups: a current protocol group with a moist cotton pellet, a test group with no moist cotton pellet placement, and positive and negative control groups with varnished roots. The teeth were embedded in florist sponges immersed in fetal bovine serum at 13.3-kPa pressure. The MTA set was tested using the Vickers hardness test, and the data were analyzed using analysis of variance. RESULTS The greatest mean surface hardness values were observed in the current protocol group (80.7 ± 35.6), but this was not statistically different when compared with the test group without a moist cotton pellet (78.3 ± 53.7) or the control groups. CONCLUSIONS Moist cotton pellet placement may not be essential for MTA setting in apexification procedures or situations in which the apical surface of the MTA is against a moist opening of greater than 1 mm.
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Affiliation(s)
- Lara DeAngelis
- Melbourne Dental School, University of Melbourne, Melbourne, Victoria, Australia
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26
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Shokouhinejad N, Razmi H, Fekrazad R, Asgary S, Neshati A, Assadian H, Kheirieh S. Push-out bond strength of two root-end filling materials in root-end cavities prepared by Er,Cr:YSGG laser or ultrasonic technique. AUST ENDOD J 2012; 38:113-7. [PMID: 23211070 DOI: 10.1111/j.1747-4477.2010.00264.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
This study compared the push-out bond strength of mineral trioxide aggregate (MTA) and a new endodontic cement (NEC) as root-end filling materials in root-end cavities prepared by ultrasonic technique (US) or Er,Cr:YSGG laser (L). Eighty single-rooted extracted human teeth were endodontically treated, apicectomised and randomly divided into four following groups (n = 20): US/MTA, US/NEC, L/MTA and L/NEC. In US/MTA and US/NEC groups, root-end cavities were prepared with ultrasonic retrotip and filled with MTA and NEC, respectively. In L/MTA and L/NEC groups, root-end cavities were prepared using Er,Cr:YSGG laser and filled with MTA and NEC, respectively. Each root was cut apically to create a 2 mm-thick root slice for measurement of bond strength using a universal testing machine. Then, all slices were examined to determine the mode of bond failure. Data were analysed using two-way anova. Root-end filling materials showed significantly higher bond strength in root-end cavities prepared using ultrasonic technique (US/MTA and US/NEC) (P < 0.001). The bond strengths of MTA and NEC did not differ significantly. The failure modes were mainly adhesive for MTA, but cohesive for NEC. In conclusion, bond strengths of MTA and NEC to root-end cavities were comparable and higher in ultrasonically prepared cavities.
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Affiliation(s)
- Noushin Shokouhinejad
- Department of Endodontics, School of Dentistry/Dental Research Center, Tehran University of Medical Sciences, Tehran, Iran.
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Araújo AC, Nunes E, Fonseca AA, Cortes MI, Horta MC, Silveira FF. Influence of smear layer removal and application mode of MTA on the marginal adaptation in immature teeth: a SEM analysis. Dent Traumatol 2012; 29:212-7. [DOI: 10.1111/j.1600-9657.2012.01157.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/21/2012] [Indexed: 11/29/2022]
Affiliation(s)
- Ana Cristina Araújo
- Department of Dentistry; Pontificial Catholic University of Minas Gerais; Belo Horizonte; Brazil
| | - Eduardo Nunes
- Department of Dentistry; Pontificial Catholic University of Minas Gerais; Belo Horizonte; Brazil
| | - Ana Abras Fonseca
- Department of Dentistry; Pontificial Catholic University of Minas Gerais; Belo Horizonte; Brazil
| | - Maria Ilma Cortes
- Department of Dentistry; Pontificial Catholic University of Minas Gerais; Belo Horizonte; Brazil
| | - Martinho Campolina Horta
- Department of Dentistry; Pontificial Catholic University of Minas Gerais; Belo Horizonte; Brazil
| | - Frank Ferreira Silveira
- Department of Dentistry; Pontificial Catholic University of Minas Gerais; Belo Horizonte; Brazil
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Chittoni SB, Martini T, Wagner MH, Da Rosa RA, Cavenago BC, Duarte MAH, Klein CA, Só MVR. Back-scattered electron imaging for leakage analysis of four retrofilling materials. Microsc Res Tech 2011; 75:796-800. [DOI: 10.1002/jemt.21128] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Accepted: 11/01/2011] [Indexed: 11/06/2022]
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Shokouhinejad N, Gorjestani H, Nasseh AA, Hoseini A, Mohammadi M, Shamshiri AR. Push-out bond strength of gutta-percha with a new bioceramic sealer in the presence or absence of smear layer. AUST ENDOD J 2011; 39:102-6. [PMID: 24279654 DOI: 10.1111/j.1747-4477.2011.00310.x] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
The purpose of this study was to compare the bond strength of a new bioceramic sealer (EndoSequence BC Sealer) and AH Plus in the presence or absence of smear layer. Extracted single-rooted human teeth were prepared and randomly divided into four groups. In groups 1 and 3, the root canals were finally irrigated with 5.25% NaOCl and smear layer was not removed, but in groups 2 and 4, the root canals were finally irrigated with 17% EDTA followed by 5.25% NaOCl in order to remove the smear layer. In groups 1 and 2, the root canals were obturated with gutta-percha/AH Plus, but in groups 3 and 4, obturation was performed with gutta-percha/EndoSequence BC Sealer. Push-out bond strength and failure modes were evaluated. The bond strength of gutta-percha/AH Plus and gutta-percha/EndoSequence BC Sealer was not significantly different (P = 0.89). The presence or absence of smear layer did not significantly affect the bond strength of filling materials (P = 0.69). The mode of bond failure was mainly cohesive for all groups. In conclusion, the bond strength of the new bioceramic sealer was equal to that of AH Plus with or without the smear layer.
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Affiliation(s)
- Noushin Shokouhinejad
- Dental Research Center/Department of Endodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran Iranian Center for Endodontic Research, Tehran, Iran Oral and Dental Diseases Research Center, School of Dentistry, Kerman University of Medical Sciences, Kerman, Iran Post-Doctoral Endodontic Program, Harvard School of Dental Medicine, Boston, Massachusetts, USA Clinical Instructor, Boston, Massachusetts, USA Private Practice, Shiraz, Iran School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
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Clarkson RM, Podlich HM, Moule AJ. Influence of Ethylenediaminetetraacetic Acid on the Active Chlorine Content of Sodium Hypochlorite Solutions When Mixed in Various Proportions. J Endod 2011; 37:538-43. [DOI: 10.1016/j.joen.2011.01.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2009] [Revised: 01/14/2011] [Accepted: 01/15/2011] [Indexed: 10/18/2022]
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Darvell BW, Wu RCT. "MTA"-an Hydraulic Silicate Cement: review update and setting reaction. Dent Mater 2011; 27:407-22. [PMID: 21353694 DOI: 10.1016/j.dental.2011.02.001] [Citation(s) in RCA: 123] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2010] [Revised: 02/03/2011] [Accepted: 02/03/2011] [Indexed: 11/15/2022]
Abstract
OBJECTIVES To review the current status and understanding of Portland cement-like endodontic materials commonly referred to by the trade designation "MTA" (alias "Mineral Trioxide Aggregate"), and to present an outline setting reaction scheme, hitherto unattempted. METHOD The literature was searched using on-line tools, overlapping an earlier substantial review to pick up any omissions, including that in respect of ordinary Portland cement (OPC), with which MTA shares much. The search was conducted for the period January 2005 to December 2009 using 'MTA', 'GMTA', 'WMTA', and 'mineral AND trioxide AND aggregate' as keywords, with various on-line search engines including ScienceDirect (http://www.sciencedirect.com), SAGE Journals Online (http://online.sagepub.com), Wiley Online Library (http://onlinelibrary.wiley.com), SciELO Scientific electronic library online (http://www.scielo.br/scielo.php), JSTOR (http://www.jstor.org), and Scopus (http://www.scopus.com). References of articles found were cross-checked where appropriate for missed publications. Manufacturers' and related websites were searched with Google Search (http://www.google.com.hk). RESULTS A generic name for this class of materials, Hydraulic Silicate Cement (HSC), is proposed, and an outline reaction scheme has been deduced. HSC has distinct advantages apparent, including sealing, sterilizing, mineralizing, dentinogenic and osteogenic capacities, which research continues to demonstrate. However, ad hoc modifications have little supporting justification. SIGNIFICANCE While HSC has a definite place in dentistry, with few of the drawbacks associated with other materials, some improvements in handling and other properties are highly desirable, as are studies of the mechanisms of the several beneficial physiological effects. Reference to the extensive, but complex, literature on OPC may provide the necessary insight.
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Affiliation(s)
- B W Darvell
- Bioclinical Sciences, Faculty of Dentistry, Kuwait University, Health Sciences Centre, PO Box 24923, Safat 13110, Kuwait.
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Jalalzadeh SM, Mamavi A, Khoshbin E, Karapanou V, Mohammadi Z. The effect of post space preparation in teeth obturated with Mineral Trioxide Aggregate evaluated using a fluid filtration system. J Oral Sci 2011; 52:567-70. [PMID: 21206158 DOI: 10.2334/josnusd.52.567] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
The aim of this study was to evaluate the seal of a 4-mm Mineral Trioxide Aggregate (MTA) filling after post space preparation. Forty single-rooted premolar teeth without curved root anatomy and fractures were selected. The root length was standardized to 12 mm by removing excess from the apical end. The roots were instrumented to a 50 K-file by the step-back technique. The roots were randomly divided into groups A and B, of fifteen each. In group A, the canals were obturated with 7 mm of white MTA. After 24 h, 3 mm of MTA was removed to simulate post space preparation using a long shank diamond round bur. In group B, the canals were filled with 4 mm of white MTA. All samples were attached to a fluid filtration device. Measurements (µl min⁻¹ cm H₂O⁻¹) were taken every 2 min, for 10 min and data were analyzed by an independent t-test (P > 0.05). Fluid transport averaged in groups A and B at 9.2 × 10⁻⁴, and 11.8 × 10⁻⁴ µl min⁻¹ cm H₂O⁻¹, respectively. Independent t-test showed no significant difference between the groups (P < 0.05). Removing set MTA using a round bur for post space preparation does not affect its sealing ability, when 4 mm of MTA remains.
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Affiliation(s)
- Seyed Mohsen Jalalzadeh
- Department of Endodontics, Dental School, Hamadan University of Medical Sciences, Hamadan, Iran.
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Yildirim T, Er K, Taşdemir T, Tahan E, Buruk K, Serper A. Effect of smear layer and root-end cavity thickness on apical sealing ability of MTA as a root-end filling material: A bacterial leakage study. ACTA ACUST UNITED AC 2010; 109:e67-72. [DOI: 10.1016/j.tripleo.2009.08.030] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2009] [Revised: 08/07/2009] [Accepted: 08/16/2009] [Indexed: 11/26/2022]
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Yildirim T, Taşdemir T, Orucoglu H. The evaluation of the influence of using MTA in teeth with post indication on the apical sealing ability. ACTA ACUST UNITED AC 2009; 108:471-4. [DOI: 10.1016/j.tripleo.2009.04.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2009] [Revised: 04/29/2009] [Accepted: 04/29/2009] [Indexed: 10/20/2022]
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Mineral Trioxide Aggregate Obturation: A Review and Case Series. J Endod 2009; 35:777-90. [PMID: 19482173 DOI: 10.1016/j.joen.2009.03.006] [Citation(s) in RCA: 129] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2009] [Revised: 03/02/2009] [Accepted: 03/02/2009] [Indexed: 11/22/2022]
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