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Agarwal S, Mishra L, Singh NR, Behera R, Kumar M, Nagaraja R, Sokolowski K, Lapinska B. Effect of Different Irrigating Solutions on Root Canal Dentin Microhardness-A Systematic Review with Meta-Analysis. J Funct Biomater 2024; 15:132. [PMID: 38786643 PMCID: PMC11121888 DOI: 10.3390/jfb15050132] [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: 04/07/2024] [Revised: 05/07/2024] [Accepted: 05/13/2024] [Indexed: 05/25/2024] Open
Abstract
The aim of this study was to evaluate the effect of different irrigating solutions as well as their combination and activation modes on root canal dentin microhardness. The protocol was registered in PROSPERO and PRISMA guidelines were followed. The structured question was as follows: "Which type of irrigating solution used in endodontic treatment causes more change in dentin microhardness?" The literature was screened via PubMed, Google Scholar, Scopus, and Science Direct. The last search was carried out in February 2023 with English language restriction. Two reviewers independently performed screening and evaluation of articles. A total of 470 articles were retrieved from all the databases, whereas only 114 articles were selected for full-text analysis. After applying eligibility criteria, 44 studies were evaluated and included in this review. The results showed that with increased contact time with irrigants, dentin microhardness decreases. Increased contact time with sodium hypochlorite (NaOCl) was associated with more reduction in dentin microhardness compared with other irrigants. Other irrigants, with the exception of distilled water, including EDTA, citric acid, herbal irrigants, glycolic acid, phytic acid, etc., in this study significantly decreased dentin microhardness. The maximum reduction in dentin microhardness was seen with 2.5% NaOCl after 15 min of contact time. The use of irrigating solutions alters the chemical composition of dentin, thereby decreasing its microhardness, which affects the clinical performance of endodontically treated teeth.
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Affiliation(s)
- Sunidhi Agarwal
- Department of Conservative Dentistry & Endodontics, Institute of Dental Sciences, Siksha ‘O’ Anusandhan University, Bhubaneswar 751003, India; (S.A.); (N.R.S.); (R.B.)
| | - Lora Mishra
- Department of Conservative Dentistry & Endodontics, Institute of Dental Sciences, Siksha ‘O’ Anusandhan University, Bhubaneswar 751003, India; (S.A.); (N.R.S.); (R.B.)
| | - Naomi Ranjan Singh
- Department of Conservative Dentistry & Endodontics, Institute of Dental Sciences, Siksha ‘O’ Anusandhan University, Bhubaneswar 751003, India; (S.A.); (N.R.S.); (R.B.)
| | - Rini Behera
- Department of Conservative Dentistry & Endodontics, Institute of Dental Sciences, Siksha ‘O’ Anusandhan University, Bhubaneswar 751003, India; (S.A.); (N.R.S.); (R.B.)
| | - Manoj Kumar
- Department of Periodontics and Oral Implantology, Institute of Dental Sciences and SUM Hospital, Siksha ‘O’ Anusandhan University, Bhubaneswar 751003, India;
| | - Ravishankar Nagaraja
- Department of Biostatistics, Vallabhbhai Patel Chest Institute, University of Delhi, Delhi 110021, India;
| | - Krzysztof Sokolowski
- Department of Conservative Dentistry, Medical University of Lodz, 251 Pomorska St., 92-213 Lodz, Poland;
| | - Barbara Lapinska
- Department of General Dentistry, Medical University of Lodz, 251 Pomorska St., 92-213 Lodz, Poland
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Saghiri MA, Vakhnovetsky J, Abdolmaleki A, Samadi E, Samadi F, Napoli S, Conte M, Morgano SM. Mechanical properties of simulated dentin caries treated with metal cations and L-ascorbic acid 2-phosphate. Odontology 2024; 112:489-500. [PMID: 37978093 DOI: 10.1007/s10266-023-00868-z] [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: 04/29/2023] [Accepted: 10/16/2023] [Indexed: 11/19/2023]
Abstract
This pH cycling study aimed to investigate the effects of L-Ascorbic acid 2-phosphate (AA2P) salts of Mg, Zn, Mn, Sr, and Ba on the surface microhardness, compressive strength, diametral tensile strength (DTS), and solubility of root canal dentin. 186 cylindrical dentin specimens from 93 teeth were fortified with optimal concentrations of AA2P salts of Mg (0.18 mM), Zn (5.3 µM), Mn (2.2 × 10-8 M), Sr (1.8 µM), and Ba (1.9 µM). Saline was used as the control group. These dentin specimens underwent a 3-day cycling process simulating dentin caries formation through repeated sequences of demineralization and remineralization. Surface microhardness at 100 and 500 µm depths (n = 10/subgroup), scanning electron microscopy (n = 3/group), compressive strength (n = 10/group), DTS (n = 6/group), and solubility (n = 5/group) tests were performed to analyze the dentin specimens. Data were analyzed using Kolmogorov-Smirnov, one-way ANOVA, and Post Hoc Tukey tests (p < 0.05). The control group had significantly lower microhardness at both depths (p < 0.001), reduced DTS (p = 0.001), decreased compressive strength (p < 0.001), and higher weight loss (p < 0.001) than all other groups. The Sr group had the highest compressive strength and microhardness among all the groups. The microhardness was significantly higher for the 500 µm depth than the 100 µm depth (p < 0.001), but the difference in microhardness between depths across groups was not significant (p = 0.211). All fortifying solutions provided some protection against artificial caries lesions. Therefore, these elements might have penetrated and reinforced the demineralized dentin against acid dissolution.
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Affiliation(s)
- Mohammad Ali Saghiri
- Department of Restorative Dentistry, Rutgers School of Dental Medicine, Newark, NJ, USA.
- Department of Endodontics, University of the Pacific, Arthur A. Dugoni School of Dentistry, San Francisco, CA, USA.
- MSB C639A, Rutgers Biomedical and Health Sciences, 185 South Orange Avenue, Newark, NJ, 07103, USA.
| | - Julia Vakhnovetsky
- Sector of Innovation in Dentistry, Dr. Hajar Afsar Lajevardi Research Cluster (DHAL), Hackensack, NJ, USA
- University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | | | - Elham Samadi
- Sector of Innovation in Dentistry, Dr. Hajar Afsar Lajevardi Research Cluster (DHAL), Hackensack, NJ, USA
- Biomaterials Laboratory, Rutgers School of Dental Medicine, Newark, NJ, USA
| | - Fatereh Samadi
- Sector of Innovation in Dentistry, Dr. Hajar Afsar Lajevardi Research Cluster (DHAL), Hackensack, NJ, USA
- Biomaterials Laboratory, Rutgers School of Dental Medicine, Newark, NJ, USA
| | - Salvatore Napoli
- Department of Oral & Maxillofacial Surgery, Rutgers School of Dental Medicine, Newark, NJ, USA
| | - Michael Conte
- Department of Restorative Dentistry, Office of Clinical Affairs, Rutgers School of Dental Medicine, Newark, NJ, USA
| | - Steven M Morgano
- Department of Restorative Dentistry, Rutgers School of Dental Medicine, Newark, NJ, USA
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Sahebi S, Mofidi H, Abbaszadegan A, Gholami A, Eskandari F. The effect of nanobased irrigants on the root canal dentin microhardness: an ex-vivo study. BMC Oral Health 2023; 23:581. [PMID: 37598165 PMCID: PMC10440035 DOI: 10.1186/s12903-023-03298-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 08/10/2023] [Indexed: 08/21/2023] Open
Abstract
BACKGROUND Given the favorable antimicrobial properties of zinc oxide (ZnONPs), standard silver (AgNPs), and imidazolium-based silver (Im-AgNPs) nanoparticles, this study aimed to evaluate their influence on the microhardness of root canal dentin. METHODS In this experimental study, 40 mandibular premolars were decoronated at the cementoenamel junction and longitudinally sectioned into halves to create 80 specimens. They were randomly allocated to 5 groups (n = 16) and irrigated with ZnONPs, AgNPs, Im-AgNPs, NaOCl, or normal saline (as the negative control) for 15 min. The Vickers Hardness Number (VHN) was measured on each root canal third before and after being soaked in irrigants. Statistical analysis was performed using paired t-test, one-way ANOVA, and post hoc Tukey's test (α = 0.05). RESULTS Im-AgNPs and ZnONPs irrigants improved the microhardness of root dentin, whereas, AgNPs and NaOCl decreased it. ZnONPs yielded the highest VHN at the coronal third (P˂0.001), while the Im-AgNPs provided the highest VHN at the middle and apical thirds (P˂0.001). The AgNPs group showed the lowest VHN at the apical third. CONCLUSIONS The irrigants containing Im-AgNPs and ZnONPs significantly enhanced the root dentin microhardness. However, the use of AgNPs resulted in decreased microhardness.
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Affiliation(s)
- Safoora Sahebi
- Department of Endodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Fars, Iran
| | - Hossein Mofidi
- Endodontist, Department of Endodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Abbas Abbaszadegan
- Department of Endodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Fars, Iran
| | - Ahmad Gholami
- Biotechnology Research Center, Shiraz University of Medical Sciences, Shiraz, Fars, Iran.
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Fars, Iran.
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Fars, Iran.
| | - Fateme Eskandari
- School of Dentistry, Shiraz University of Medical Sciences, Ghasrdasht Street, Shiraz, 71956-15878, Iran.
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KÜDEN C. The Effect of Photodynamic Therapy Applied with Different Photosensitizers on Dentin Hardness in Comparison with Conventional Irrigation. CUMHURIYET DENTAL JOURNAL 2022. [DOI: 10.7126/cumudj.1199515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Objective: The aim of this study was to examine the effect of photodynamic therapy (PDT) using toluidine blue O (TBO), curcumin (CUR) and methylene blue (MB) photosensitizers on root canal dentin microhardness by comparing it with sodium hypochlorite (NaOCl) + ethylenediamine tetraacetic acid (EDTA).
Materials and methods: The root canals of 100 human premolar teeth were shaped by the R25 file (Reciproc; VDW, Munich, Germany). The working length of the teeth was determined by using a #10 K-file, keeping it 1mm shorter than the tooth apex. The R25 file was used to prepare the root canals. After every three pecking motions, irrigation was performed and a total of 10 mm of distilled water was used. The specimens were randomly distributed according to the disinfection method; NaOCl+EDTA, PDT with TBO, PDT with CUR, PDT with MB and distilled water (DS) (n=20). Grooves were prepared on the buccal and lingual surfaces of the prepared teeth, parallel to the long axis of the tooth, without touching the root canals. The roots were divided into two parts by means of a cement spatula placed in these grooves. Root canal dentin microhardness was evaluated by the Vickers test method. Three measurements were made by applying 300 g of force for 15 seconds and the average was calculated. It was recorded as the Vickers hardness value. The data were analyzed by using the one-way ANOVA and Dunnett’s post hoc tests (α=0.05).
Results: All photosensitizer groups showed significantly higher microhardness value than the groups of DS and NaOCl + EDTA (p0.05).
Conclusions: PDT with CUR obtained the highest radicular dentin microhardness.
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Saghiri MA, Sheibani N, Kawai T, Nath D, Dadvand S, Amini S, Vakhnovetsky J, Morgano SM. Diabetes Negatively Affects Tooth Enamel and Dentine Microhardness: An In-vivo Study. Arch Oral Biol 2022; 139:105434. [DOI: 10.1016/j.archoralbio.2022.105434] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 03/25/2022] [Accepted: 04/14/2022] [Indexed: 11/16/2022]
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Arul B, Suresh N, Sivarajan R, Natanasabapathy V. Influence of volume of endodontic irrigants used in different irrigation techniques on root canal dentin microhardness. Indian J Dent Res 2021; 32:230-235. [PMID: 34810395 DOI: 10.4103/ijdr.ijdr_709_18] [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: 11/04/2022] Open
Abstract
Introduction Overzealous application of endodontic irrigants affects the root canal dentin mechanical properties. The effect of volume of endodontic irrigants on the microhardness of root canal dentin has not been studied. Aim This study assessed the effect of volume of endodontic irrigants used in different final irrigation activation techniques on root canal dentin microhardness (RCDM). Methodology Sixty human maxillary central incisors were embedded in acrylic resin in Kuttler's endodontic cube to the level of cementoenamel junction. The root samples were randomly divided into 4 experimental groups (n = 15): Group-NI-needle irrigation, Group-PUI-continuous passive ultrasonic irrigation, Group-EndoVac-apical negative pressure system, Group combination- EndoVac + PUI irrigation. Root canals were instrumented up to size 40 (F4). The resin mounted specimens were sectioned longitudinally into two halves and were reassembled in Kuttler's kube to carry out final irrigation activation. A predetermined standardized volume of irrigants was used in each group. The RCDM was measured after root canal instrumentation and after final irrigation using Vicker microhardness tester (coronal, middle, and apical third). The reduction in RCDM values (p < 0.0086) were analyzed using Kruskal Wallis and Mann Whitney-U tests. Results Reduction in RCDM was observed with all the endodontic irrigating techniques tested. EndoVac and combination irrigation techniques showed maximum reduction in RCDM in all thirds of root canal. Conclusion It is concluded that the volume of irrigants and agitation plays a role in reducing RCDM. The overall volume of irrigants to cause maximum reduction was 25 ml, beyond which neither volume nor agitation affects RCDM.
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Affiliation(s)
- Buvaneshwari Arul
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, Meenakshi Academy of Higher Education and Research (MAHER), Maduravoyal, Tamil Nadu, India
| | - Nandini Suresh
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, Meenakshi Academy of Higher Education and Research (MAHER), Maduravoyal, Tamil Nadu, India
| | - Ranjithkumar Sivarajan
- Department of Conservative Dentistry and Endodontics, SRM Kattankulathur Dental College, Chennai, Tamil Nadu, India
| | - Velmurugan Natanasabapathy
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, Meenakshi Academy of Higher Education and Research (MAHER), Maduravoyal, Tamil Nadu, India
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Fernandes Zancan R, Hadis M, Burgess D, Zhang ZJ, Di Maio A, Tomson P, Hungaro Duarte MA, Camilleri J. A matched irrigation and obturation strategy for root canal therapy. Sci Rep 2021; 11:4666. [PMID: 33633128 PMCID: PMC7907354 DOI: 10.1038/s41598-021-83849-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Accepted: 02/09/2021] [Indexed: 11/21/2022] Open
Abstract
In root canal therapy, irrigating solutions are employed to eliminate the bacterial load and also prepare dentin for sealer interaction. The aim of this research was to assess how irrigating solutions employed on their own or in sequence affected the tooth structure. The best way to prepare the tooth for obturation using hydraulic calcium silicate cement (HCSC) sealers and gutta-percha, thus guiding clinicians on a matched irrigation-obturation strategy for optimized root canal treatment was investigated. The effect of irrigating solutions on dentine was investigated by assessing changes in dentin microhardness, ultrastructure and mineral content, organic/inorganic matter, surface roughness and Young’s modulus. The interaction of four root canal sealers with the dentin was analysed by assessing the changes in microhardness of the dentin after sealer placement and also the sealer to dentin interface by scanning electron and confocal laser microscopy. The irrigating solutions damaged the dentin irreversibly both when used on their own and in combination. The best sequence involved sodium hypochlorite followed by chelator and a final rinse with sodium hypochlorite and obturation using HCSC sealers that enabled the restoration of dentin properties. The HCSC sealers did not rely on chelator irrigating solutions for a good material adaptation to dentin.
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Affiliation(s)
- Rafaela Fernandes Zancan
- Department of Restorative Dentistry, Dental Materials and Endodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Mohammed Hadis
- School of Dentistry, Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - David Burgess
- School of Chemical Engineering, University of Birmingham, Birmingham, UK
| | - Zhenyu Jason Zhang
- School of Chemical Engineering, University of Birmingham, Birmingham, UK
| | | | - Phillip Tomson
- School of Dentistry, Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Marco Antonio Hungaro Duarte
- Department of Restorative Dentistry, Dental Materials and Endodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Josette Camilleri
- School of Dentistry, Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK.
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Kucher M, Dannemann M, Modler N, Bernhard MR, Hannig C, Weber MT. Mapping of the Micro-Mechanical Properties of Human Root Dentin by Means of Microindentation. MATERIALS 2021; 14:ma14030505. [PMID: 33494261 PMCID: PMC7864522 DOI: 10.3390/ma14030505] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/18/2021] [Accepted: 01/18/2021] [Indexed: 11/16/2022]
Abstract
The extensive knowledge of root dentin's mechanical properties is necessary for the prediction of microstructural alterations and the teeth's deformations as well as their fracture behavior. Standardized microindentation tests were applied to apical, medial, and cervical root sections of a mandibular human first molar to determine the spatial distribution of the hard tissue's properties (indentation modulus, indentation hardness, Martens hardness, indentation creep). Using an indentation mapping approach, the inhomogeneity of mechanical properties in longitudinal as well as in transversal directions were measured. As a result, the tooth showed strongly inhomogeneous material properties, which depended on the longitudinal and transversal positions. In the transversal cutting planes of the cervical, medial, apical sections, the properties showed a comparable distribution. A statistical evaluation revealed an indentation modulus between 12.2 GPa and 17.8 GPa, indentation hardness between 0.4 GPa and 0.64 GPa and an indentation creep between 8.6% and 10.7%. The established standardized method is a starting point for further investigations concerning the intensive description of the inhomogeneous mechanical properties of human dentin and other types of dentin.
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Affiliation(s)
- Michael Kucher
- Institute of Lightweight Engineering and Polymer Technology (ILK), Technische Universität Dresden, Holbeinstraße 3, 01307 Dresden, Germany; (M.K.); (N.M.)
| | - Martin Dannemann
- Institute of Lightweight Engineering and Polymer Technology (ILK), Technische Universität Dresden, Holbeinstraße 3, 01307 Dresden, Germany; (M.K.); (N.M.)
- Correspondence: ; Tel.: +49-351-463-38134
| | - Niels Modler
- Institute of Lightweight Engineering and Polymer Technology (ILK), Technische Universität Dresden, Holbeinstraße 3, 01307 Dresden, Germany; (M.K.); (N.M.)
| | - Martina Romy Bernhard
- Clinic of Operative and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany; (M.R.B.); (C.H.); (M.-T.W.)
| | - Christian Hannig
- Clinic of Operative and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany; (M.R.B.); (C.H.); (M.-T.W.)
| | - Marie-Theres Weber
- Clinic of Operative and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany; (M.R.B.); (C.H.); (M.-T.W.)
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Xenogeneic native decellularized matrix carrying PPARγ activator RSG regulating macrophage polarization to promote ligament-to-bone regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 116:111224. [DOI: 10.1016/j.msec.2020.111224] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 06/16/2020] [Accepted: 06/19/2020] [Indexed: 12/19/2022]
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Ulusoy Öİ, Mantı AŞ, Çelik B. Nanohardness reduction and root dentine erosion after final irrigation with ethylenediaminetetraacetic, etidronic and peracetic acids. Int Endod J 2020; 53:1549-1558. [PMID: 33448412 DOI: 10.1111/iej.13372] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 07/22/2020] [Accepted: 07/24/2020] [Indexed: 11/30/2022]
Abstract
AIM To evaluate the nanohardness reduction and erosion in root canal dentine after application of 17% ethylenediaminetetraacetic acid (EDTA), 9% etidronic acid (HEBP) and 2% peracetic acid (PAA) either alone or combined with sodium hypochlorite (NaOCl). METHODOLOGY One hundred and sixty single-rooted teeth were decoronated and their root canals were chemomechanically prepared. For the nanohardness evaluation, 80 roots with instrumented canals were split longitudinally into two halves. Dentine blocks with a length of 7 mm were obtained from the middle third of one half of each tooth and were embedded in epoxy resin blocks exposing the root canal walls. Initial nanohardness values of root canal dentine were measured for each specimen using a nanoindenter with a Berkovich tip. The specimens were divided into seven experimental (n = 10) and one control (n = 10) group according to the final irrigation regimens: Group 1: 2.5% NaOCl, Group 2: 17% EDTA, Group 3: 2.5% NaOCl-17% EDTA, Group 4: 2% PAA, Group 5: 2.5% NaOCl-2% PAA, Group 6: 9% HEBP, Group 7: 2.5% NaOCl + 9% HEBP and Group 8: Distilled water (control). The measurement of the nanohardness values was repeated for each specimen after being exposed to the irrigants. The nanaohardness reduction of each sample was calculated and recorded. The other 80 instrumented root canals were used for scanning electron microscope (SEM) evaluation. First, they were irrigated with the same protocols stated above and longitudinally split into two halves. One half of each root canal was viewed using SEM for the amount of erosion. The erosion scores were recorded. Data were analysed statistically using Kruskal-Wallis and Bonferroni-adjusted Mann-Whitney U-tests with a significance level of 0.05. RESULTS Use of etidronic acid and NaOCl + HEBP reduced the nanohardness values significantly more than the other experimental solutions (P < 0.05). There was no significant difference between the values for the nanohardness reduction in the samples irrigated with a single chelator and chelator combined with NaOCl (P > 0.05). Peritubular and intertubular erosion were observed in the samples irrigated with HEBP and NaOCl + HEBP. CONCLUSION Final irrigation of root canals using etidronic acid alone or combined with NaOCl was associated with structural alterations in root canal dentine of extracted teeth.
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Affiliation(s)
- Ö İ Ulusoy
- Department of Endodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey
| | - A Ş Mantı
- Department of Endodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey
| | - B Çelik
- Department of Statistics, Faculty of Science, Gazi University, Ankara, Turkey
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11
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Rath PP, Yiu CKY, Matinlinna JP, Kishen A, Neelakantan P. The effect of root canal irrigants on dentin: a focused review. Restor Dent Endod 2020; 45:e39. [PMID: 32839720 PMCID: PMC7431934 DOI: 10.5395/rde.2020.45.e39] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/03/2020] [Accepted: 06/09/2020] [Indexed: 11/15/2022] Open
Abstract
Despite the vast literature on the effects of root canal irrigants on the dentin characteristics, the precise effects of clinically relevant irrigation sequences remain unclear. In this review, we systematically dissect the role of different sequential irrigation approaches that are used in clinical endodontics. Using a systematic search strategy, we attempt to answer the question: ‘Which irrigating sequence has the most deleterious effects on dentin structure and properties?’ The effect of irrigants on the dentin composition and mechanical properties have been reviewed. A wide variety of concentrations, duration and techniques have been employed to characterize the effects of chemicals on dentin properties, thus making it impossible to draw guidelines or recommendations of irrigant sequences to be followed clinically. It was apparent that all the studied irrigation sequences potentially result in some deleterious effects on dentin such as decrease in the flexural strength, microhardness, modulus of elasticity and inorganic content and organic-inorganic ratio of the dentin. However, the literature still lacks comprehensive investigations to compare the deleterious effect of different irrigation sequences, using a wide variety of qualitative and quantitative methods. Such investigations are essential to make clinical recommendations and strategize efforts to minimize chemically-induced damage to dentin characteristics.
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Affiliation(s)
- Priti Pragati Rath
- Discipline of Endodontology, Division of Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR
| | - Cynthia Kar Yung Yiu
- Discipline of Pediatric Dentistry, Division of Pediatric Dentistry and Orthodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR
| | - Jukka Pekka Matinlinna
- Dental Materials Science, Division of Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR
| | - Anil Kishen
- Faculty of Dentistry, The University of Toronto, Toronto, ON, Canada.,Dentistry, Mount Sinai Hospital, Toronto, ON, Canada
| | - Prasanna Neelakantan
- Discipline of Endodontology, Division of Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR
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12
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Marques EF, Marceliano-Alves MFV, Pelegrine RA, Pinheiro SL, Bueno CEDS. Influence of the Chelating Solutions in the Resistance of Glass Fiber Posts to the Root Dentin. Eur J Dent 2020; 14:584-589. [PMID: 32820473 PMCID: PMC7541334 DOI: 10.1055/s-0040-1714761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Objective
This study aimed to evaluate the influence of chelating agents (EDTA, citric acid and Tetraclean) on glass fiber posts adhesion to root dentin.
Materials and Methods
Forty mandibular premolars single canals, with complete apical root, straight, circular cross sections were selected, accessed and had the cervical third prepared with Gates-Glidden drills, then included in resin, instrumented with ProTaper Universal and the root canal obturation was carried out. After, the samples were randomly divided into 4 groups (n = 10) to test the final irrigation solutions: G1:17% EDTA; G2:10% citric acid; G3: Tetraclean and G4: saline solution (control). After 30 days of storage (36.5° C and 100% humidity), the post preparation was performed leaving 4 mm of apical endodontic filling. Then, a fiber-glass post previously selected was coated with ED Primer adhesive system and resin sealer Panavia, installed and stored for 24 hours at 37°C. The samples were subjected to a tensile test with a constant speed of 1 mm/min with 2000 Kgf. The results were analyzed with the ANOVA test.
Results
The statistical analyzes indicated no significant differences between the groups (p > 0.05).
Conclusion
The type of chelating agent used in the final irrigation of the endodontic treatment did not influence the tensile strength of the fixation system used to sealer the glass fiber posts to the intracanal dentin.
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Affiliation(s)
| | | | - Rina Andrea Pelegrine
- Department of Endodontics, São Leopoldo Mandic Dental Research Center, Campinas, São Paulo, Brazil
| | - Sérgio Luiz Pinheiro
- Department of Dentistry, Pontifícia Universidade Católica de Campinas (PUC-Campinas), São Paulo, Brazil
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Bosaid F, Aksel H, Makowka S, Azim AA. Surface and structural changes in root dentine by various chelating solutions used in regenerative endodontics. Int Endod J 2020; 53:1438-1445. [PMID: 32619296 DOI: 10.1111/iej.13354] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 06/25/2020] [Accepted: 06/26/2020] [Indexed: 01/16/2023]
Abstract
AIM To evaluate the effects of the prolonged use of various irrigant solutions used during regenerative endodontic procedures on the physical and chemical structure of root canal dentine in extracted human teeth. METHODOLOGY Sixtyroot dentine samples from extracted, single-rooted, human teeth were assigned to 10 groups. Eight groups were irrigated with 1.5% NaOCl for 5 min, followed by 3%, 10%, 17% EDTA or 10% citric acid (CA) for 5 or 10 min. One group received only NaOCl irrigation, and samples with only distilled water irrigation were used as a control group. The changes in microhardness and flexural strength were determined using Vickers and 3-point flexural tester, respectively. Molecular and elemental compositions were recorded using FTIR and EDS spectroscopy. Data were analysed using one-way anova, Kruskal-Wallis and Mann-Whitney U tests. RESULTS The application of 1.5% NaOCl for 5 min did not affect the mineral content or microhardness of dentine (P > 0.05). However, it significantly decreased the dentine collagen peak values (P < 0.05), which was similar to the control group after the use of chelating agents (EDTA and 10% of CA) (P > 0.05). The effect of EDTA on the inorganic content was not concentration and time dependent (P > 0.05). CA resulted in a significantly greater reduction in the inorganic contents compared with the control and EDTA groups (P < 0.05). Regardless of the time, EDTA and CA significantly decreased dentine microhardness compared to the control (P < 0.05) with the greatest reduction in the CA groups (P < 0.05). NaOCl alone was associated with the lowest flexural strength, while none of the other irrigation regimens significantly decreased the flexural strength compared to the control group (P> 0.05). CONCLUSIONS Use of 1.5% NaOCl for 5 min decreased the collagen content of samples of human dentine from extracted teeth while EDTA and 10% citric acid mostly affected the inorganic content and microhardness of dentine surfaces. None of the irrigant solutions significantly decreased the mechanical properties of the entire dentine specimen.
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Affiliation(s)
- F Bosaid
- Division of Endodontics, University at Buffalo, School of Dental Medicine, Buffalo, NY, USA
| | - H Aksel
- Division of Endodontics, University at Buffalo, School of Dental Medicine, Buffalo, NY, USA
| | - S Makowka
- Dental Materials Research Laboratory, University at Buffalo, School of Dental Medicine, Buffalo, NY, USA
| | - A A Azim
- Division of Endodontics, University at Buffalo, School of Dental Medicine, Buffalo, NY, USA
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14
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Dotto L, Sarkis Onofre R, Bacchi A, Rocha Pereira GK. Effect of Root Canal Irrigants on the Mechanical Properties of Endodontically Treated Teeth: A Scoping Review. J Endod 2020; 46:596-604.e3. [DOI: 10.1016/j.joen.2020.01.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 01/23/2020] [Accepted: 01/26/2020] [Indexed: 11/27/2022]
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15
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Keine KC, Kuga MC, Coaguila-Llerena H, Palma-Dibb RG, Faria G. Peracetic acid as a single endodontic irrigant: effects on microhardness, roughness and erosion of root canal dentin. Microsc Res Tech 2019; 83:375-380. [PMID: 31833180 DOI: 10.1002/jemt.23424] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 11/06/2019] [Accepted: 11/27/2019] [Indexed: 11/06/2022]
Abstract
The aim was to assess the effects of 1% peracetic acid (PAA) as a single endodontic irrigant on microhardness, roughness, and erosion of root canal dentin, compared with 2.5% sodium hypochlorite (NaOCl) and with 2.5% NaOCl combined with 17% EDTA. Forty human, single-rooted tooth hemisections were submitted to Knoop microhardness test, before and after the following irrigation protocols: PAA = 1% PAA; NaOCl = 2.5% NaOCl; NaOCl-EDTA-NaOCl = 2.5% NaOCl +17% EDTA +2.5% NaOCl; and SS = saline. Another 40 roots were instrumented, irrigated with the same protocols, and sectioned longitudinally. The roughness analysis was performed on the mesial section using a confocal laser scanning microscope, whereas erosion was analyzed on each third of the distal section, using a scanning electron microscope. The data were analyzed using ANOVA and Tukey post-tests, and Kruskal-Wallis and Dunn post-tests (α = .05). The PAA and NaOCl-EDTA-NaOCl groups showed no significant differences (p > .05); both promoted reduction in microhardness and increase in roughness, compared with the NaOCl and SS groups (p < .05). NaOCl-EDTA-NaOCl promoted higher erosion in the cervical and middle thirds than the other groups (p < .05); there was no difference among PAA, NaOCl, and SS (p > .05). There was also no difference among the groups regarding the apical third (p > .05). PAA used as a single endodontic irrigant caused reduction in root canal dentin microhardness and increase in roughness in a similar way to NaOCl-EDTA-NaOCl; however, PAA caused less erosion than NaOCl-EDTA-NaOCl.
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Affiliation(s)
- Kátia C Keine
- Department of Restorative Dentistry, Araraquara School of Dentistry, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - Milton C Kuga
- Department of Restorative Dentistry, Araraquara School of Dentistry, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - Hernán Coaguila-Llerena
- Department of Restorative Dentistry, Araraquara School of Dentistry, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - Regina G Palma-Dibb
- Department of Restorative Dentistry, Ribeirão Preto School of Dentistry, São Paulo University - USP, Ribeirão Preto, São Paulo, Brazil
| | - Gisele Faria
- Department of Restorative Dentistry, Araraquara School of Dentistry, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
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Effect of photodynamic therapy and ErCrYSGG laser irradiation on the push-out bond strength between fiber post and root dentin. Photodiagnosis Photodyn Ther 2019; 27:415-418. [DOI: 10.1016/j.pdpdt.2019.06.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 06/17/2019] [Accepted: 06/24/2019] [Indexed: 12/25/2022]
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17
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Jiayi W, Ruijie H. [Research progress on QMix properties in root canal irrigation]. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2017; 35:543-548. [PMID: 29188654 DOI: 10.7518/hxkq.2017.05.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Mechanical instrumentation preparation alone is insufficient to completely remove root canal infection, and chemical irrigation is essential to eliminate infected remnants. An ideal root canal irrigant should completely remove the smear layer, lubricate the root canal, efficiently kill bacteria, induce mild or no inflammatory response in the tissues, and avoid damaging the dentin structure. However, a commercial irrigant that meets all these requirements is currently lacking. QMix is a root canal irrigation mixture of ethylenediamine tetraacetic acid (EDTA), chlorhexidine (CHX) and surfactant. This mixture can remove the smear layer efficiently, and it possesses strong antibacterial effect and good biocompatibility with minimal cytotoxicity. Furthermore, the influence of QMix on the color and micro-hardness of dentin is low, and it can improve the wettability of root canal sealant without affecting its adhesive properties. This review compares the efficiencies of QMix with other irrigants (sodium hypochlorite, CHX, EDTA, SmearClear, and MTAD) in term of smear layer removal, dentine and root canal sealing, cell cytotoxicity, and bacterial growth inhibition.
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Affiliation(s)
- Wu Jiayi
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Dept. of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Huang Ruijie
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Dept. of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
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Baldasso FER, Cardoso LR, Silva VDD, Morgental RD, Kopper PMP. Evaluation of the effect of four final irrigation protocols on root canal dentin components by polarized light microscopy and scanning electron microscopy. Microsc Res Tech 2017; 80:1337-1343. [DOI: 10.1002/jemt.22946] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 08/28/2017] [Accepted: 09/04/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Flávia Emi Razera Baldasso
- Department of Conservative Dentistry, School of Dentistry; Federal University of Rio Grande do Sul (UFRGS), Av. Ramiro Barcelos; Porto Alegre/RS Brazil
| | - Luana Roleto Cardoso
- Department of Conservative Dentistry, School of Dentistry; Federal University of Rio Grande do Sul (UFRGS), Av. Ramiro Barcelos; Porto Alegre/RS Brazil
| | - Vinicius Duval da Silva
- Department of Pathology, School of Medicine; Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga; Porto Alegre Brazil
| | - Renata Dornelles Morgental
- Department of Stomatology, School of Dentistry; Federal University of Santa Maria (UFSM); Rua Marechal Floriano Peixoto Santa Maria Brazil
| | - Patrícia Maria Poli Kopper
- Department of Conservative Dentistry, School of Dentistry; Federal University of Rio Grande do Sul (UFRGS), Av. Ramiro Barcelos; Porto Alegre/RS Brazil
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Saghiri MA, Asatourian A, Gurel Z, Sorenson CM, Sheibani N. Bcl-2 expression is essential for development and normal physiological properties of tooth hard tissue and saliva production. Exp Cell Res 2017; 358:94-100. [PMID: 28610838 DOI: 10.1016/j.yexcr.2017.06.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 06/02/2017] [Accepted: 06/05/2017] [Indexed: 11/27/2022]
Abstract
BACKGROUND Apoptosis plays a fundamental role in appropriate tissue development and function. Although expression of Bcl-2 has been reported during tooth and submandibular gland (SMG) development, the physiological role Bcl-2 plays during these processes has not been addressed. This study was performed to evaluate the impact of Bcl-2 expression on the formation and properties of tooth hard tissue, and saliva production. METHODS Twenty-four mice (12 males and 12 females) were divided into three groups of eight (n=8): group A (Bcl-2 +/+), group B (Bcl-2 +/-), and group C (Bcl-2 -/-) and subjected to micro-CT analyses. The mineral content of first molars was analyzed by X-Ray diffraction (XRD) and scanning electron microscopy (SEM) color dot map. The surface microhardness was determined by Vickers test on labial surfaces of incisors. Saliva was collected from different groups of mice after subcutaneous injection of pilocarpine. RESULTS Samples from Bcl-2 -/- mice showed significantly smaller micro-CT values, lower and poor crystallinity of hydroxyapatite (HA), and lowest surface micro hardness. SMG from Bcl-2 -/- mice showed remarkable reduction in size, consistent with reduced saliva accumulation. CONCLUSIONS The absence of Bcl-2 expression in SMG did not affect the expression of other Bcl-2 family members. Thus, Bcl-2 expression influence on the formation and properties of tooth hard tissue, and saliva accumulation. SIGNIFICANCE Bcl-2 expression has a significant impact on the mineralogical content of enamel crystals of tooth structure. Lack of Bcl-2 expression led to impaired production of enamel ACP crystals.
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Affiliation(s)
- Mohammad Ali Saghiri
- Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States.
| | - Armen Asatourian
- Angiogenesis and Regenerative Medicine Sector, Dr. H. Afsar Lajevardi Research Cluster, Shiraz, Iran
| | - Zafer Gurel
- Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States
| | - Christine M Sorenson
- Department of Pediatircs, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States
| | - Nader Sheibani
- Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States; Department of Biomedical Engineering, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States; Department of Cell and Regenerative Biology, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States
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20
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Influence of ultrasonic activation over final irrigants in the removal of photosensitizer from root canal walls after photodynamic therapy. Photodiagnosis Photodyn Ther 2017; 17:216-220. [DOI: 10.1016/j.pdpdt.2016.12.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 11/01/2016] [Accepted: 12/15/2016] [Indexed: 11/23/2022]
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Kamble AB, Abraham S, Kakde DD, Shashidhar C, Mehta DL. Scanning Electron Microscopic Evaluation of Efficacy of 17% Ethylenediaminetetraacetic Acid and Chitosan for Smear Layer Removal with Ultrasonics: An In vitro Study. Contemp Clin Dent 2017; 8:621-626. [PMID: 29326515 PMCID: PMC5754985 DOI: 10.4103/ccd.ccd_745_17] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Introduction: The main aim of root canal treatment is cleaning, shaping and then obturating three dimensionally to prevent reinfection. This includes chemicomechanical cleansing by instrumentation and the use of irrigating solutions. Therefore, the purpose of this study was to compare the smear layer removal from root canal dentine subjected to two root canal irrigants, 17% EDTA and 0.2% Chitosan, a new irrigant using Scanning Electron Microscope. Methodology: 40 single rooted premolars were decoronated followed by instrumentation with I Race files and intermediate irrigation with 3% sodium hypochlorite and activation with ultrasonics. Then the samples were longitudinally sectioned and place in the respective test solutions and their controls for 5 minutes. Scanning Electron Microscopic evaluation was further carried out. Results: The results of the present study indicates that the Chitosan which was proved effective in removing smear layer. Conclusion: A moderate concentration of 0.2% chitosan removes the smear layer with greater efficiency.
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Affiliation(s)
- Aradhana Babu Kamble
- Department of Conservative Dentistry and Endodontics, S.M.B.T. Dental College and Hospital, Sangamner, Ahmednagar, India
| | - Sathish Abraham
- Department of Conservative Dentistry and Endodontics, S.M.B.T. Dental College and Hospital, Sangamner, Ahmednagar, India
| | - Deepak Dadarao Kakde
- Department of Conservative Dentistry and Endodontics, Aditya Dental College and Hospital, Beed, Maharashtra, India
| | - C Shashidhar
- Department of Conservative Dentistry and Endodontics, S.M.B.T. Dental College and Hospital, Sangamner, Ahmednagar, India
| | - Disha Lalit Mehta
- Department of Conservative Dentistry and Endodontics, S.M.B.T. Dental College and Hospital, Sangamner, Ahmednagar, India
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BALDASSO FER, ROLETO L, SILVA VDD, MORGENTAL RD, KOPPER PMP. Effect of final irrigation protocols on microhardness reduction and erosion of root canal dentin. Braz Oral Res 2017; 31:e40. [DOI: 10.1590/1807-3107bor-2017.vol31.0040] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 04/10/2017] [Indexed: 11/21/2022] Open
Affiliation(s)
| | - Luana ROLETO
- Universidade Federal do Rio Grande do Sul, Brazil
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23
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Simezo AP, da Silveira Bueno CE, Cunha RS, Pelegrine RA, Rocha DGP, de Martin AS, Kato AS. Comparative Analysis of Dentinal Erosion after Passive Ultrasonic Irrigation versus Irrigation with Reciprocating Activation: An Environmental Scanning Electron Study. J Endod 2016; 43:141-146. [PMID: 27939728 DOI: 10.1016/j.joen.2016.09.016] [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: 07/05/2016] [Revised: 09/09/2016] [Accepted: 09/13/2016] [Indexed: 11/17/2022]
Abstract
INTRODUCTION The aim of this study was to assess ex vivo the erosive effects of passive ultrasonic irrigation versus irrigation with reciprocating activation on the dentinal surface of the root canal at 3 predetermined levels using environmental scanning electron microscopy. METHODS Ten roots of mandibular premolars were prepared using the ProTaper Universal system (Dentsply Maillefer, Ballaigues, Switzerland). The specimens were embedded in flasks cleaved longitudinally, and indentations were made 3.0, 6.0, and 9.0 mm from the apex. The specimens in the control group (n = 10) were cleaned in an ultrasonic bath containing 2.5% sodium hypochlorite and 17% EDTA and then dried. Then, environmental scanning electron microscopic images were obtained at magnification × 800. The specimens were then reassembled in their flasks, and the NaOCl and EDTA solutions were activated according to the conditions established for the experimental groups (ie, the passive ultrasonic irrigation group [n = 5] and the EasyClean (Easy Equipamentos Odontológicos, Belo Horizonte, MG, Brazil) group, irrigation with reciprocating activation with the EasyClean instrument [n = 5]). The specimens of both experimental groups were analyzed in the same manner as in the control group. Analysis of the dentinal surface topography was conducted using the 3D Roughness Reconstruction program (Phenom-World BV, Eindhoven, the Netherlands) as a means for assessing erosion. The data were evaluated by means of the Kruskal-Wallis, Student-Newman-Keuls, and Mann-Whitney tests. RESULTS In the EasyClean group, the degree of dentinal erosion at 3.0 mm was significantly higher than at 9.0 mm. In the other comparisons, there was no statistically significant difference (P < .05). CONCLUSIONS The final irrigation techniques tested were equivalent in relation to the degree of erosion caused to the dentinal surface.
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Affiliation(s)
- Ana Paula Simezo
- Department of Endodontics, São Leopoldo Mandic Dental Research Center, Campinas, São Paulo, Brazil
| | | | | | - Rina Andrea Pelegrine
- Department of Endodontics, São Leopoldo Mandic Dental Research Center, Campinas, São Paulo, Brazil
| | | | | | - Augusto Shoji Kato
- Department of Endodontics, São Leopoldo Mandic Dental Research Center, Campinas, São Paulo, Brazil.
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Wang Z, Maezono H, Shen Y, Haapasalo M. Evaluation of Root Canal Dentin Erosion after Different Irrigation Methods Using Energy-dispersive X-ray Spectroscopy. J Endod 2016; 42:1834-1839. [DOI: 10.1016/j.joen.2016.07.024] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Revised: 07/29/2016] [Accepted: 07/29/2016] [Indexed: 11/27/2022]
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Aksel H, Serper A, Kalayci S, Somer G, Erisken C. Effects of QMix and ethylenediaminetetraacetic acid on decalcification and erosion of root canal dentin. Microsc Res Tech 2016; 79:1056-1061. [PMID: 27500784 DOI: 10.1002/jemt.22745] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 07/10/2016] [Accepted: 07/26/2016] [Indexed: 11/10/2022]
Abstract
The aim of this study was to evaluate the effect of initial NaOCl on the decalcification and erosion ability of EDTA and QMix. Sixty-maxillary-incisors were bisected longitudinally and the tooth-halves were used. The experiment was conducted in two-sets. In set-I, 80-tooth halves were treated in the presence or absence of initial NaOCl and EDTA. In set-II, 40-tooth halves were immersed in NaOCl and QMix. After each treatment, calcium-ion release was determined with flame photometry. The erosion was imaged using SEM. Initial NaOCl led to concentration- and time-dependent increase in calcium removal effect of 17% EDTA (p < .05). The rate of calcium removal and root canal wall erosion was considerably more severe with the use of 5% NaOCl for 3 min (p < .05). QMix as a final solution showed less decalcification and erosion than 17% EDTA when used 5% NaOCl as an initial irrigant (p < .05). Optimizing the concentration and application time of NaOCl can decrease the decalcification effect of chelating agents.
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Affiliation(s)
- Hacer Aksel
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.
| | - Ahmet Serper
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
| | - Sukru Kalayci
- Department of Chemistry, Faculty of Arts and Science, Gazi University, Ankara, Turkey
| | - Guler Somer
- Department of Chemistry, Faculty of Arts and Science, Gazi University, Ankara, Turkey
| | - Cevat Erisken
- Biomedical Engineering Department, TOBB University, Ankara, Turkey
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Saghiri MA, Asatourian A, Garcia-Godoy F, Sheibani N. Effect of biomaterials on angiogenesis during vital pulp therapy. Dent Mater J 2016; 35:701-709. [PMID: 27546854 DOI: 10.4012/dmj.2015-332] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
This review intended to provide an overview of the effects of dental materials, used in dentin-pulp complex and dental pulp regeneration, on angiogenesis processes during regenerative endodontic procedures. An electronic search was performed in PubMed and MEDLINE databases via OVID using the keywords mentioned in the PubMed and MeSH headings for English language published articles from January 2005-April 2014 that evaluated the angiogenic properties of different dental materials used in regenerative endodontic procedures. Of the articles identified in an initial search, only 40 articles met the inclusion criteria set for this review. Vital pulp therapy materials might have positive effects on angiogenesis events, while most of the canal irrigating solutions and antibiotic pastes have anti-angiogenic activity except for EDTA. Future clinical studies will be helpful in defining the mechanisms of action for dental materials that promote or inhibit angiogenesis events at applied areas.
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Affiliation(s)
- Mohammad Ali Saghiri
- Departments of Ophthalmology and Visual Science and Biomedical Engineering, University of Wisconsin, School of Medicine and Public Health
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Oh S, Perinpanayagam H, Kum DJW, Lim SM, Yoo YJ, Chang SW, Lee W, Baek SH, Zhu Q, Kum KY. Evaluation of three obturation techniques in the apical third of mandibular first molar mesial root canals using micro-computed tomography. J Dent Sci 2016; 11:95-102. [PMID: 30894953 PMCID: PMC6395149 DOI: 10.1016/j.jds.2015.11.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 11/06/2015] [Indexed: 12/02/2022] Open
Abstract
Background/purpose Recent studies have demonstrated a high incidence of isthmuses in mandibular first molar mesial roots, and intratubular mineralization following mineral trioxide aggregate obturation. This study assessed the filling quality of three obturation techniques in the apical 5 mm of mandibular first molar mesial root canals. Materials and methods Sixty extracted human mandibular first molar mesial roots with two separate canals that had interconnecting isthmuses, were prepared to an apical size of 40/0.06. They were allocated to three groups of 20 roots for obturation by either cold lateral compaction (CLC) or the continuous wave of condensation (CW) that used gutta-percha and AH Plus sealer, or by an orthograde canal obturation using OrthoMTA. The obturated roots were scanned by micro-computed tomography and assessed for the volumetric ratio (%) of gutta-percha, sealer, and OrthoMTA within the main canals or isthmuses in the apical 5 mm area. Measurements were analyzed statistically for differences among three obturation techniques. Results In the main canals, filled volume ratios were not significantly different among groups. Within isthmuses, the filled volume ratio for CLC was lower than in CW (P = 0.025) or OrthoMTA (P = 0.002). In isthmuses, the gutta-percha volume ratio in CLC was lower than in CW (P = 0.005), although the sealer volume ratio was higher than in CW (P = 0.049). Conclusion CLC demonstrated lower filling densities in isthmuses in the apical region than either CW or OrthoMTA. Orthograde MTA obturation showed comparable filling quality to gutta-percha with sealer.
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Affiliation(s)
- Soram Oh
- Department of Conservative Dentistry, Dental Research Institute, Seoul National University Dental Hospital, Seoul National University School of Dentistry, Seoul, Republic of Korea
| | - Hiran Perinpanayagam
- Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, Canada
| | | | - Sang-Min Lim
- Department of Conservative Dentistry, Dental Research Institute, Seoul National University Dental Hospital, Seoul National University School of Dentistry, Seoul, Republic of Korea
| | - Yeon-Jee Yoo
- Department of Conservative Dentistry, Dental Research Institute, Seoul National University Dental Hospital, Seoul National University School of Dentistry, Seoul, Republic of Korea
| | - Seok Woo Chang
- Department of Conservative Dentistry, School of Dentistry, Kyung Hee University, Seoul, Republic of Korea
| | - Woocheol Lee
- Department of Conservative Dentistry, Dental Research Institute, Seoul National University Dental Hospital, Seoul National University School of Dentistry, Seoul, Republic of Korea
| | - Seung-Ho Baek
- Department of Conservative Dentistry, Dental Research Institute, Seoul National University Dental Hospital, Seoul National University School of Dentistry, Seoul, Republic of Korea
| | - Qiang Zhu
- Division of Endodontology, Department of Oral Health and Diagnostic Sciences, University of Connecticut Health Center, School of Dental Medicine, Farmington, CT, USA
| | - Kee Yeon Kum
- Department of Conservative Dentistry, Dental Research Institute, Seoul National University Dental Hospital, Seoul National University School of Dentistry, Seoul, Republic of Korea
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Lei L, Liu H, Cai Y, Wei X. MTAD combined with endosonic irrigation as a new approach for the disinfection of Enterococcus faecalis biofilm. J Dent Sci 2015. [DOI: 10.1016/j.jds.2015.06.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Cecchin D, Farina AP, Souza MA, Albarello LL, Schneider AP, Vidal CMP, Bedran-Russo AK. Evaluation of antimicrobial effectiveness and dentine mechanical properties after use of chemical and natural auxiliary irrigants. J Dent 2015; 43:695-702. [DOI: 10.1016/j.jdent.2015.03.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 03/23/2015] [Accepted: 03/27/2015] [Indexed: 01/05/2023] Open
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Kara Tuncer A, Tuncer S, Siso SH. Effect of QMix irrigant on the microhardness of root canal dentine. Aust Dent J 2015; 60:163-8. [PMID: 25329355 DOI: 10.1111/adj.12242] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/14/2014] [Indexed: 12/01/2022]
Affiliation(s)
- A Kara Tuncer
- Department of Endodontics; Faculty of Dentistry; Bezmialem Vakıf University; Istanbul Turkey
| | - S Tuncer
- Department of Conservative Dentistry; Faculty of Dentistry; Istanbul University; Istanbul Turkey
| | - SH Siso
- Department of Conservative Dentistry; Faculty of Dentistry; Bezmialem Vakıf University; Istanbul Turkey
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Pascon FM, Kantovitz KR, Gaspar JF, De Paula AB, Puppin-Rontani RM. Effects of chemical agents on physical properties and structure of primary pulp chamber dentin. Microsc Res Tech 2014; 77:52-6. [PMID: 24738149 DOI: 10.1002/jemt.22312] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
This study evaluated the effects of chemical agents on the physical properties and structure of primary pulp chamber dentin using surface roughness, microhardness tests, and scanning electron microscopy (SEM). Twenty-five primary teeth were sectioned exposing the pulp chamber and were divided into five groups (n = 5): NT, no treatment; SH1, 1% sodium hypochlorite (NaOCl); SH1U, 1% NaOCl + Endo-PTC®; SH1E, 1% NaOCl + 17% EDTA; and E, 17% EDTA. After dentin treatment, the specimens were submitted to roughness, microhardness testing, and SEM analysis. Roughness and microhardness data were submitted to one-way ANOVA and Tukey's test (P < 0.05). The SH1E group showed the highest roughness, followed by the E group (P < 0.05) when compared with the NT, SH1, and SH1U groups. Microhardness values of SH1 and SH1U showed no significant difference as compared to the NT (control) group (P > 0.05). Microhardness values could not be obtained in the EDTA groups (SH1E and E). The presence of intertubular dentin with opened dentin tubules was observed in the NT, SH1, and SH1U groups. SH1E showed eroded and disorganized dentin with few opened tubules and the intertubular/peritubular dentin was partially removed. Considering the physical and structural approaches and the chemical agents studied, it can be concluded that NaOCl and NaOCl associated with Endo-PTC® were the agents that promoted the smallest changes in surface roughness, microhardness, and structure of the pulp chamber dentin of primary teeth.
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Aranda-Garcia AJ, Kuga MC, Chavéz-Andrade GM, Kalatzis-Sousa NG, Hungaro Duarte MA, Faria G, Reis Só MV, Faria-Junior NB. Effect of final irrigation protocols on microhardness and erosion of root canal dentin. Microsc Res Tech 2013; 76:1079-83. [DOI: 10.1002/jemt.22268] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Revised: 06/27/2013] [Accepted: 07/07/2013] [Indexed: 11/09/2022]
Affiliation(s)
- Arturo Javier Aranda-Garcia
- Department of Restorative Dentistry; Araraquara Dental School, UNESP - Univ Estadual Paulista Araraquara; SP Brazil
| | - Milton Carlos Kuga
- Department of Restorative Dentistry; Araraquara Dental School, UNESP - Univ Estadual Paulista Araraquara; SP Brazil
| | | | | | - Marco Antonio Hungaro Duarte
- Department of Restorative Dentistry; Endodontics and Dental Materials, Bauru Dental School,; USP - Sao Paulo University; Bauru SP Brazil
| | - Gisele Faria
- Department of Restorative Dentistry; Araraquara Dental School, UNESP - Univ Estadual Paulista Araraquara; SP Brazil
| | - Marcus Vinicius Reis Só
- Department of Conservative Dentistry; Rio Grande do Sul Federal University, UFRGS, Porto Alegre; RS Brazil
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A new weak chelator in endodontics: effects of different irrigation regimens with etidronate on root dentin microhardness. Int J Dent 2013; 2013:743018. [PMID: 23983692 PMCID: PMC3745862 DOI: 10.1155/2013/743018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Accepted: 06/25/2013] [Indexed: 11/18/2022] Open
Abstract
This study investigated the effect of sodium hypochlorite (NaOCl), ethylenediaminetetraacetic (EDTA), etidronic (HEBP), and citric acid (CA) associated in different irrigation regimens on root dentin microhardness. Forty-five root halves of single-rooted teeth were sectioned into thirds that were embedded in acrylic resin, polished, randomly assigned into 3 groups, and treated as follows: G1: saline solution; G2: 5% NaOCl + 18% HEBP, mixed in equal parts; and G3: 2.5% NaOCl. After measurements, the G3 samples were distributed into subgroups G4, G5, and G6, which were submitted to 17% EDTA, 10% CA and 9% HEBP, respectively. Following the new measurements, these groups received a final flush with 2.5% NaOCl, producing G7, G8, and G9. Microhardness was measured with Knoop indenter under a 25 g load for 15 seconds, before and after treatments. The data were statistically analyzed using paired Student's t-test (α<0.05) to compare values before and after treatments and analysis of variance (ANOVA) (α<0.05) to detect any differences among thirds. Except G1, all tested irrigation regimens significantly decreased the microhardness. There were no differences between root thirds before treatments, and all root thirds exhibited equal responses to same treatment. Except saline, all tested irrigation regimens reduced the root dentin microhardness.
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The effect of Morinda Citrifolia juice as an endodontic irrigant on smear layer and microhardness of root canal dentin. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/s1348-8643(12)00073-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Garcia AJ, Kuga MC, Palma-Dibb RG, Só MV, Matsumoto MA, Faria G, Keine KC. Effect of sodium hypochlorite under several formulations on root canal dentin microhardness. ACTA ACUST UNITED AC 2013; 4:229-32. [DOI: 10.1111/j.2041-1626.2012.00158.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Accepted: 06/09/2012] [Indexed: 11/27/2022]
Affiliation(s)
- Arturo J.A. Garcia
- Department of Restorative Dentistry; Araraquara Dental School; São Paulo State University; São Paulo Brazil
| | - Milton C. Kuga
- Department of Restorative Dentistry; Araraquara Dental School; São Paulo State University; São Paulo Brazil
| | - Regina G. Palma-Dibb
- Department of Restorative Dentistry; Ribeirão Preto Dental School; São Paulo University; São Paulo Brazil
| | - Marcus V.R. Só
- Department of Restorative Dentistry; Araraquara Dental School; São Paulo State University; São Paulo Brazil
| | | | - Gisele Faria
- Department of Restorative Dentistry; Araraquara Dental School; São Paulo State University; São Paulo Brazil
| | - Kátia C. Keine
- Department of Restorative Dentistry; Araraquara Dental School; São Paulo State University; São Paulo Brazil
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Passos VF, Melo MA, Vasconcellos AA, Rodrigues LK, Santiago SL. Comparison of methods for quantifying dental wear caused by erosion and abrasion. Microsc Res Tech 2012; 76:178-83. [DOI: 10.1002/jemt.22150] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2012] [Accepted: 10/10/2012] [Indexed: 11/08/2022]
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Dineshkumar MK, Vinothkumar TS, Arathi G, Shanthisree P, Kandaswamy D. Effect of ethylene diamine tetra-acetic acid, MTAD™, and HEBP as a final rinse on the microhardness of root dentin. J Conserv Dent 2012; 15:170-3. [PMID: 22557818 PMCID: PMC3339014 DOI: 10.4103/0972-0707.94587] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2011] [Revised: 11/08/2011] [Accepted: 12/12/2011] [Indexed: 11/04/2022] Open
Abstract
CONTEXT Evaluation of microhardness of root dentin provides indirect information on the change in mineral content of root dentin thereby providing useful information on the bonding quality of resin-based root canal sealers. AIM This study evaluated the effect of 17% EDTA, MTAD, and 18% HEBP solutions on the microhardness of human root canal dentin using the Vickers microhardness test. MATERIALS AND METHODS Forty human single-rooted teeth were decoronated at the cementoenamel junction and sectioned longitudinally into buccal and lingual segments. Eighty specimens were divided into four groups (n=20). Group I was treated with distilled water (control), groups II, III, and IV were treated with 1.3% NaOCl as a working solution for 20 minutes followed by 17% EDTA, MTAD, and 18% HEBP respectively. The surface hardness of the root dentin was determined in each specimen with a Vicker's hardness tester. The values were statistically analyzed using the one-way ANOVA and post hoc Tukey multiple comparison tests. RESULTS There was a statistical significant difference among all the groups (one-way ANOVA; P<0.001). Among the experimental groups, HEBP showed the highest dentin microhardness (53.74 MPa, P<0.001). Least microhardness was found with MTAD (42.85 MPa, P<0.001). CONCLUSIONS HEBP as a final rinse appears to be a promising irrigation protocol with less impact on the mineral content of root dentin.
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Affiliation(s)
- Mukura Kulasekaran Dineshkumar
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences of Sri Ramachandra University, Porur, Chennai, Tamil Nadu, India
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Saghiri MA, García-Godoy F, Lotfi M, Mehrvazfar P, Aminsobhani M, Rezaie S, Asgar K. The effect of some fluids on surface oxidation and amount of released iron of stainless steel endodontic files. SCANNING 2012; 34:309-315. [PMID: 22736320 DOI: 10.1002/sca.21016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Accepted: 01/05/2012] [Indexed: 06/01/2023]
Abstract
Endodontic files come in contact with blood, infected pulp tissue, and irrigating solutions during root canal therapy. Some instruments such as stereomicroscopy and scanning electron microscopy are used to observe corrosion of endodontic files which are complicated and dependent on preparation methods. Having knowledge of the corrosion and ion release of endodontic files can help in drawing firm deductions as to which files would perform better in the clinical scenario. Therefore, we have used energy dispersive X-ray analysis and an atomic absorption spectrophotometer to track oxygen on the surface and iron in the exposed media to observe the oxidative rate of the media. In this study, corrosion by blood was higher than other biological fluids, but less than with sodium hypochlorite (NaOCl). Observations of energy dispersive X-ray analysis and atomic absorption spectrophotometer results demonstrated that after exposure the amount of oxygen on the surface and surrounding areas increased. Therefore, the files should be rinsed as soon as possible during and after use to hinder the oxidation rate, but blood may produce a different behavior and it might be considered as a decreased risk of broken stainless steel files remaining in the root canal after treatment.
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Effect of Ethylenediaminetetraacetic Acid on Root Fracture with Respect to Concentration at Different Time Exposures. J Endod 2012; 38:1110-3. [DOI: 10.1016/j.joen.2012.04.026] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2012] [Revised: 04/11/2012] [Accepted: 04/24/2012] [Indexed: 11/19/2022]
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Dadresanfar B, Khalilak Z, Delvarani A, Mehrvarzfar P, Vatanpour M, Pourassadollah M. Effect of ultrasonication with EDTA or MTAD on smear layer, debris and erosion scores. J Oral Sci 2011; 53:31-6. [PMID: 21467812 DOI: 10.2334/josnusd.53.31] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
The purpose of this study was to compare the effects of ultrasonication with ethylenediaminetetraacetic acid (EDTA) and a mixture of tetracycline isomer, an acid, and a detergent (MTAD) as final canal irrigants on the smear layer, debris and erosion scores. Fifty-eight extracted single-rooted human teeth were instrumented with ProTaper rotary files up to size F3. According to the final irrigation regimen, the samples were distributed into the following groups: EDTA, MTAD, EDTA ultrasonicated for 1 min, and MTAD ultrasonicated for 1 min. The smear layer, debris and erosion scores were recorded at the apical, middle, and coronal third of each canal using a scanning electron microscope. Data were subjected to statistical evaluation using the Kruskal-Wallis and Mann-Whitney tests (P < 0.05). There were no significant differences in smear layer or debris removal between the experimental groups. EDTA caused significantly more erosion at the middle level than MTAD. Also EDTA resulted in more erosion at the coronal level than MTAD when subjected to ultrasonication. Ultrasonic activation of EDTA significantly increased its erosive effects at the middle and coronal levels. Based on the present findings, MTAD appears to cause less dentinal erosion while allowing proper removal of the smear layer and debris.
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Affiliation(s)
- Bahareh Dadresanfar
- Department of Endodontics, Dental Branch, Islamic Azad University, Tehran, Iran
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