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Şahin Mantı A, Ulusoy Öİ. An Evaluation of the Fracture Resistance of Teeth with Simulated External Cervical Resorption Cavities Categorized Using Three-Dimensional Classification. J Clin Med 2024; 13:2159. [PMID: 38673432 PMCID: PMC11050918 DOI: 10.3390/jcm13082159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 03/20/2024] [Accepted: 04/07/2024] [Indexed: 04/28/2024] Open
Abstract
(1) Background: External cervical resorption causes dental hard tissue destruction that may reduce the fracture resistance of affected teeth. By using a compressive strength test, this study aimed to evaluate the fracture resistance of teeth with simulated external cervical resorption cavities that have different three-dimensional classifications. (2) Methods: In total, 170 teeth with simulated external cervical resorptions were divided into 16 experimental groups (n = 10) and 1 control group (n = 10) based on the three-dimensional classification: 1Ap, 1Bp, 1Cp, 1Dp, 2Ap, 2Bp, 2Cp, 2Dp, 3Ap, 3Bp, 3Cp, 3Dp, 4Ap, 4Bp, 4Cp, 4Dp and a control group. Defects were restored with mineral trioxide aggregate. The fracture resistances of the samples were statistically analyzed using two-way repeated ANOVA and the Bonferroni correction for multiple comparisons at a significance level of p < 0.05. (3) Results: The lowest resistance to fracture was observed in samples with vertical height level "4" and circumferential spread of "D" (p < 0.001). In the groups with circumferential spreads "B", "C" and "D", there were significant differences between the samples with vertical height levels "1", "2", "3" and "4" regarding fracture resistance (p < 0.001). (4) Conclusions: The circumferential spread and vertical height of the external cervical resorption influenced the fracture resistance of the affected teeth.
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Affiliation(s)
- Arzu Şahin Mantı
- Department of Endodontics, Faculty of Dentistry, Gazi University, Bişkek (8.) Street, 1. Road, No: 8, Emek, Ankara 06490, Turkey;
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Ulusoy Öİ, Ballal NV, Narkedamalli R, Ulusoy N, Shetty KP, Luke AM. Dislodgement resistance and structural changes of tricalcium silicate-based cements after exposure to different chelating agents. PLoS One 2024; 19:e0296647. [PMID: 38232127 DOI: 10.1371/journal.pone.0296647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 12/18/2023] [Indexed: 01/19/2024] Open
Abstract
This study aimed to evaluate the dislodgement resistance and structural changes of different mineral trioxide aggregate cements (MTA) like Pro-Root MTA, Ortho MTA, and Retro MTA after exposure to sodium hypochlorite (NaOCl), NaOCl-Ethylenediaminetetraacetic acid (EDTA), 1-hydroxyethylidene-1, 1-bisphosphonate (Dual Rinse HEDP), and NaOCl-Maleic acid (MA). The root canal spaces of 150 dentine slices were obturated using tricalcium silicate cements and divided into 3 groups (n = 50): Group1: ProRoot MTA, Group2: Retro MTA, and Group3: Ortho MTA. The samples in each group were further subdivided into four experimental (n = 10) and one control groups (n = 10): 2.5% NaOCl-17% EDTA, Dual Rinse HEDP, 2.5% NaOCl-7% Maleic acid, 2.5% NaOCl, distilled water (control). The dislodgement resistance and structural changes of cements were measured. Use of DR HEDP resulted in higher dislodgement resistance compared to17% EDTA and 7% MA in the samples obturated with Ortho MTA and Pro-Root MTA (p<0.001). In Retro MTA group, samples treated with DR HEDP and 17% EDTA had higher dislodgment resistance compared to 7% MA (p<0.001). On microstructural and elemental analysis of all the three MTA cements, samples treated with 17% EDTA and 7% MA were more amorphous and granular when compared to DR HEDP, which was pettle shaped. Calcium level was decreased more in samples treated with 17% EDTA and 7% MA when compared to DR HEDP.
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Affiliation(s)
- Özgür İlke Ulusoy
- Faculty of Dentistry, Department of Endodontics, Gazi University, Ankara, Turkey
| | - Nidambur Vasudev Ballal
- Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Karnataka, India
| | - Rajkumar Narkedamalli
- Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Karnataka, India
| | - Nuran Ulusoy
- Faculty of Dentistry, Department of Restorative Dentistry, Near East University, Nicosia, Northern Cyprus
| | - Krishna Prasad Shetty
- Department of Clinical Science, College of Dentistry, Ajman University, Ajman, United Arab Emirates
- Centre for Medical and Bio-Allied Health Sciences Research, Ajman University, Al-Jruf, Ajman, United Arab Emirates
| | - Alexander Maniangat Luke
- Department of Clinical Science, College of Dentistry, Ajman University, Ajman, United Arab Emirates
- Centre for Medical and Bio-Allied Health Sciences Research, Ajman University, Al-Jruf, Ajman, United Arab Emirates
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Ulusoy Öİ, Genç Şen Ö, Zeyrek S, Kaya M, Paltun YN. Effect of final irrigation protocols on the fracture resistance of roots with varying dentine thickness. Eur J Oral Sci 2021; 129:e12769. [PMID: 33667031 DOI: 10.1111/eos.12769] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 01/09/2021] [Accepted: 01/12/2021] [Indexed: 11/27/2022]
Abstract
This study evaluated the effects of 9% etidronic acid (HEBP) and 17% ethylenediaminetetraacetic acid (EDTA) used either with conventional syringe irrigation (CSI) or passive ultrasonic irrigation (PUI) on the fracture resistance of roots with different dentine thickness. The root canals of 120 extracted teeth were widened, leaving dentinal walls with different thicknesses of either 0.75 mm, 1.50 mm, or 2.25 mm with 40 teeth in each group. Within each of these groups, four subgroups (n = 10) were formed according to the final irrigation regimens applied: 2.5% NaOCl-17% EDTA with CSI; 2.5% NaOCl-17% EDTA with PUI; 2.5% NaOCl + 9% HEBP with CSI; 2.5% NaOCl + 9% HEBP with PUI. The irrigated root canals were obturated with AH Plus sealer and gutta-percha cones. A compressive vertical loading was applied to the samples and the force at fracture was recorded. Data were statistically analysed using a multiple linear regression analysis. The most influencing factor for the fracture strength of roots was the remaining dentine thickness, followed by the irrigation method, and then the irrigation solution. The samples irrigated using PUI were statistically significantly more resistant to fracture than those using CSI (mean difference = 116.3 N; 95% CI = [53.9, 178.6] N). The application of HEBP was associated with higher resistance to fracture than the application of EDTA (mean difference = 71.0 N; 95% CI = [8.6, 133.3] N).
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Affiliation(s)
- Özgür İlke Ulusoy
- Department of Endodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey
| | - Özgür Genç Şen
- Department of Endodontics, Faculty of Dentistry, Yüzüncü Yıl University, Van, Turkey
| | - Salev Zeyrek
- Department of Endodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey
| | - Melih Kaya
- Department of Endodontics, Faculty of Dentistry, Yüzüncü Yıl University, Van, Turkey
| | - Yelda Nayır Paltun
- Department of Endodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey
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Ulusoy Öİ, Olcay K, Ulusoy M. Effect of various calcium hydroxide removal protocols on the dislodgement resistance of biodentine in an experimental apexification model. J Dent Sci 2020; 16:964-970. [PMID: 34141111 PMCID: PMC8189878 DOI: 10.1016/j.jds.2020.10.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 10/19/2020] [Indexed: 11/25/2022] Open
Abstract
Background/purpose Residual calcium hydroxide (CH) in the root canal dentine walls may influence the adhesion of tricalcium silicate-based materials. The aim of this study is to evaluate the effect of various CH removal protocols on the dislodgement resistance of biodentine from simulated immature root canals in an experimental apexification model. Materials and methods CH was applied to 120 simulated immature root canals. The samples were divided into 12 experimental groups (n = 10) according to the applied irrigation protocols used for the removal of CH: Group 1: Sodium hypochlorite (NaOCl), Conventional needle irrigation (CNI); Group 2: NaOCl, EndoActivator; Group 3: NaOCl, XP-endo Finisher; Group 4: NaOCl- Ethylenediaminetetraacetic acid (EDTA), CNI; Group 5: NaOCl-EDTA, EndoActivator; Group 6: NaOCl-EDTA, XP-Endo Finisher; Group 7: NaOCl+etidronic acid (HEBP), CNI; Group 8: NaOCl+HEBP, EndoActivator; Group 9: NaOCl+HEBP, XP-endo Finisher; Group 10: NaOCl- Peracetic acid (PAA), CNI; Group 11: NaOCl-PAA, EndoActivator; Group 12: NaOCl-PAA, XP-endo Finisher; Control Group: CH was not applied. Biodentine was placed at the apical thirds of 130 immature root canals. Vertical loading was applied to biodentine fillings inside the dentin discs. Maximum force to dislodge the material was statistically analyzed with ANOVA. Results The control, NaOCl+HEBP (CNI, EndoActivator, XP-endo Finisher) and NaOCl-PAA (EndoActivator, XP-endo Finisher) groups exhibited the lowest dislodgement resistance values (p < 0.001). When used CNI, irrigation with NaOCl+HEBP resulted in lower resistance to dislodgement of biodentine compared to NaOCl, and NaOCl-EDTA (p < 0.001). Conclusion Adhesion of apical barrier materials to root canal dentine can be influenced by the irrigation protocols used for CH removal.
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Affiliation(s)
- Özgür İlke Ulusoy
- Department of Endodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey
| | - Keziban Olcay
- Department of Endodontics, Faculty of Dentistry, Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | - Mutahhar Ulusoy
- Department of Prosthodontics, Faculty of Dentistry, Near East University, Nicosia, Cyprus
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Ballal NV, Ulusoy Öİ, Rao S, Gandhi P. The efficacy of different irrigation protocols in removing tricalcium silicate-based sealers from simulated root canal irregularities. Microsc Res Tech 2019; 82:1862-1868. [PMID: 31368166 DOI: 10.1002/jemt.23353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 05/11/2019] [Accepted: 07/16/2019] [Indexed: 11/10/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate the efficacy of different irrigation protocols in removing two tricalcium silicate-based sealers from simulated root canal irregularities and root canal walls. MATERIAL AND METHODS Root canals of 140 single-rooted teeth were instrumented. In one-half of each root, an apical groove was created. The samples were divided into two main groups (n = 70) based on the sealer used. In group 1, the grooves were filled with MTA Fillapex; in group 2, BioRoot RCS. The reassembled root halves were divided into six experimental and one control groups: 2.5% NaOCl-17% EDTA (Passive ultrasonic irrigation [PUI]), 5% NaOCl/9% DualRinse HEDP (PUI), 2.5% NaOCl-7% Maleic acid (PUI), 2.5% NaOCl-17% EDTA (Er:YAG laser activated irrigation [LAI]), 2.5% NaOCl/9% DualRinse HEDP (LAI), 2.5% NaOCl-7% Maleic acid (LAI), Distilled water (Control). Specimens were scored using SEM. The data were analysed using Kruskal-Wallis and Mann Whitney U tests. RESULTS Maleic acid and DualRinse HEDP removed higher amounts of MTA Fillapex from the grooves compared to EDTA, when used with both activation methods (p < .001). CONCLUSIONS Ultrasonically activated maleic acid or DualRinse HEDP can be an effective irrigation regimen in removing tricalcium silicate-based sealers.
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Affiliation(s)
- Nidambur Vasudev Ballal
- Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Karnataka, India
| | - Özgür İlke Ulusoy
- Department of Endodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey
| | - Sheetal Rao
- Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Karnataka, India
| | - Poornika Gandhi
- Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Karnataka, India
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Ulusoy Öİ, Zeyrek S, Çelik B. Evaluation of smear layer removal and marginal adaptation of root canal sealer after final irrigation using ethylenediaminetetraacetic, peracetic, and etidronic acids with different concentrations. Microsc Res Tech 2017; 80:687-692. [DOI: 10.1002/jemt.22851] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 01/25/2017] [Accepted: 01/27/2017] [Indexed: 11/05/2022]
Affiliation(s)
- Özgür İlke Ulusoy
- Department of Endodontics, Faculty of Dentistry; Gazi University; Emek Ankara 06510 Turkey
| | - Salev Zeyrek
- Department of Endodontics, Faculty of Dentistry; Gazi University; Emek Ankara 06510 Turkey
| | - Bülent Çelik
- Department of Statistics, Faculty of Science; Gazi University; Teknikokullar Ankara 06500 Turkey
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