1
|
Ballal NV, Ray AB, Narkedamalli R, Urala AS, Patel V, Harris M, Bergeron BE, Tay FR. Effect of continuous vs sequential chelation on the mechanical properties of root dentin: An ex vivo study. J Dent 2024; 148:105214. [PMID: 38950767 DOI: 10.1016/j.jdent.2024.105214] [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: 05/13/2024] [Revised: 06/24/2024] [Accepted: 06/26/2024] [Indexed: 07/03/2024] Open
Abstract
OBJECTIVES To evaluate the mechanical properties of root canal dentin treated with sodium hypochlorite (NaOCl) in combination with hydroxyethylidene diphosphonic acid (HEDP) or ethylenediaminetetraacetic acid (EDTA). METHODS For testing fracture resistance, 45 single-rooted teeth were instrumented and irrigated with NaOCl/HEDP, NaOCl/EDTA, or distilled water. Fifteen untreated teeth served as control. After obturation, specimens from the experimental groups were thermocycled, dynamically-loaded, and then statically-loaded in a universal testing machine until failure. For flexural strength analysis, 15 teeth were instrumented and irrigated with NaOCl/HEDP or NaOCl/EDTA. Root segments were sectioned into dentin bars and tested for flexural strength using a universal testing machine. For microhardness evaluation, 20 teeth were instrumented and irrigated with NaOCl/HEDP or NaOCl/EDTA. Dentin disks from the coronal-third of each root segment were prepared, one before and one after irrigation, for microhardness testing with a Knoop hardness tester. RESULTS The highest fracture resistance was recorded in the untreated group, and the lowest in the EDTA group. Although the HEDP group had higher fracture resistance than the EDTA group, the distilled water group demonstrated even greater fracture resistance than the HEDP group. Specimens treated with HEDP had significantly higher flexural strength and microhardness values when compared with those treated with EDTA. CONCLUSION The fracture resistance, flexural strength, and microhardness of root canal dentin were higher when root canals were irrigated with NaOCl/HEDP, when compared with NaOCl/EDTA. CLINICAL SIGNIFICANCE Irrigating root canals with NaOCl combined with HEDP significantly improves the mechanical integrity of root canal dentin compared to the use of NaOCl with EDTA.
Collapse
Affiliation(s)
- Nidambur Vasudev Ballal
- Department of Conservative Dentistry & Endodontics, Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India.
| | - Ayan Bhadra Ray
- Department of Conservative Dentistry & Endodontics, Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Rajkumar Narkedamalli
- Department of Conservative Dentistry & Endodontics, Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Arun S Urala
- Department of Orthodontics and Dentofacial Orthopaedics, Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Vineet Patel
- Department of Endodontics, Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - Mark Harris
- Department of Endodontics, Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - Brian E Bergeron
- Department of Endodontics, Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - Franklin R Tay
- Department of Endodontics, Dental College of Georgia, Augusta University, Augusta, GA, USA.
| |
Collapse
|
2
|
Yanık D, Turker N. Glycolic acid on push-out bond strength of fiber post and smear removal: an in vitro study. Odontology 2024; 112:739-750. [PMID: 38507151 DOI: 10.1007/s10266-024-00928-y] [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: 03/29/2023] [Accepted: 11/16/2023] [Indexed: 03/22/2024]
Abstract
This study aims to investigate glycolic acid (GA) as a final irrigant on push-out bond strength of fiber post and smear removal. Ninety mandibular premolars were stabilized with a silicone key and photographed, and canal cross-section was calculated by image processing software. Round canal morphology was selected. The specimens were divided into five groups (n = 18); 10%GA, 17%EDTA, NaOCl + 10%GA, NaOCl + 17%EDTA, and the control. Fifteen specimens were used for the push-out. Three specimens were evaluated using a scanning electron microscope after post space preparation. Two-way ANOVA and Chi-square were used for statistics. GA presented higher strength than EDTA (p < 0.05). The NaOCl + GA showed higher strength than the NaOCl + EDTA (p < 0.05). The highest values were observed in cervical and lowest in apical thirds (p < 0.05). The most failure type was between dentin and resin (p < 0.05). GA removed the smear in the post space including the apical third. The NaOCl + GA has superiority to NaOCl + EDTA on push-out strength. Glycolic acid improved the bond strength of fiber post when used as a final post space irrigant. The combination of NaOCl and glycolic acid did not negatively affect the bond strength and was more effective compared to the combination with EDTA. Glycolic acid improved the bond strength of fiber post when used as a final post space irrigant. The combination of NaOCl and glycolic acid did not negatively affect the bond strength and was more effective compared to the combination with EDTA.
Collapse
Affiliation(s)
- Deniz Yanık
- Department of Endodontics, Faculty of Dentistry, Süleyman Demirel University, Isparta, Turkey.
| | - Nurullah Turker
- Department of Prosthodontics, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
| |
Collapse
|
3
|
Marques JA, Falacho RI, Santos JM, Ramos JC, Palma PJ. Effects of endodontic irrigation solutions on structural, chemical, and mechanical properties of coronal dentin: A scoping review. J ESTHET RESTOR DENT 2024; 36:606-619. [PMID: 37698359 DOI: 10.1111/jerd.13135] [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: 05/15/2023] [Revised: 08/29/2023] [Accepted: 08/30/2023] [Indexed: 09/13/2023]
Abstract
OBJECTIVE This review aims to assess structural, chemical, and mechanical properties of coronal dentin after endodontic irrigation. MATERIALS AND METHODS Reporting followed the PRISMA extension for scoping reviews. An electronic search was carried out in PubMed, Embase, and Cochrane Library. Records filtered by language and published up to November 4, 2022 were independently screened by two researchers. Studies evaluating structural, chemical, or mechanical properties of human permanent coronal dentin after irrigation within the scope of nonsurgical root canal treatment were included. Data were extracted regarding study type, sample description and size, experimental groups, outcome, evaluation method, and main findings. RESULTS From the initial 1916 studies, and by adding 2 cross-references, 11 in vitro studies were included. Seven studies provide ultrastructural and/or chemical characterization, and six assessed microhardness and/or flexural strength. One percent to 8% sodium hypochlorite (NaOCl) and 1%-17% ethylenediaminetetraacetic acid (EDTA) were the most commonly tested solutions, with contact times of 2-240 min (NaOCl) and 1-1440 min (EDTA) being evaluated. CONCLUSIONS Overall, the literature is consensual regarding the inevitable impact of NaOCl and chelating agents on coronal dentin, with both deproteinizing and decalcifying effects being concentration- and time-dependent. The alteration of mechanical parameters further confirmed the surface and subsurface ultrastructural and chemical changes. CLINICAL SIGNIFICANCE Endodontic treatment success highly depends on restorative sealing. Understanding the result of exposing coronal dentin, the main substrate for bonding, to irrigants' action is crucial. The deproteinizing and decalcifying effects of NaOCl and chelating agents are both concentration- and time-dependent, causing surface and subsurface ultrastructural, chemical, and mechanical alterations.
Collapse
Affiliation(s)
- Joana A Marques
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Rui I Falacho
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Institute of Oral Implantology and Prosthodontics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - João Miguel Santos
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR) and Center of Investigation on Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine and Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
| | - João Carlos Ramos
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Institute of Operative Dentistry, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Paulo J Palma
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| |
Collapse
|
4
|
Taşan A, Özlek E. Effects of ethylenediaminetetraacetic acid, citric acid, and etidronic acid on root dentin mineral content and bond strength of a bioceramic-based sealer: A scanning electron microscopy-energy dispersive spectroscopy study. J Dent Res Dent Clin Dent Prospects 2024; 18:37-43. [PMID: 38881645 PMCID: PMC11179143 DOI: 10.34172/joddd.40798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 02/09/2024] [Indexed: 06/18/2024] Open
Abstract
Background This study assessed the impact of chelating agents, 17% ethylenediaminetetraacetic acid (EDTA), 10% citric acid (CA), and 18% etidronic acid (HEDP), on root dentin mineral content. Scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS) was applied to analyze changes, and the push-out bond strength test was used to measure dentin adhesion of Well-Root ST, a bioceramic root canal sealer. Methods A total of 80 extracted single-rooted lower premolar teeth were included in this study and randomly divided into four groups (n=20): group 1 (17% EDTA), group 2 (10% CA), group 3 (18% HEDP), and group 4 (distilled water, control). After irrigation and drying, SEM-EDS was applied to analyze eight samples from each group at coronal, middle, and apical root regions for mineral content and SEM images. The remaining 12 samples underwent a push-out bond strength test using Well-Root ST sealer and gutta-percha. Kruskal-Wallis and Dunn's tests were used for statistical analyses. Results Statistically significant differences were found between groups (P<0.05). SEM-EDS showed significant differences in C, O, Ca, P, and Ca/P content, with no significant differences in Na and Mg. Push-out bond strength was significantly higher in the 17% EDTA, 10% CA, and 18% HEDP groups compared to the control group, with no significant differences between chelating agents. Conclusion Chelating agents altered root dentin mineral content and improved the adhesive properties of the bioceramic sealer. These findings highlight the importance of considering the selection and use of chelating agents in the clinical practice for root canal treatment.
Collapse
Affiliation(s)
- Ahmet Taşan
- Department of Endodontology, Faculty of Dentistry, Van Yuzuncu Yil University, Van, Turkey
| | - Esin Özlek
- Department of Endodontology, Faculty of Dentistry, Van Yuzuncu Yil University, Van, Turkey
| |
Collapse
|
5
|
Novozhilova N, Babina K, Polyakova M, Sokhova I, Sherstneva V, Zaytsev A, Makeeva I, Mikheikina A. The Effect of Different Compositions and Concentrations of Etidronate-Containing Irrigants on the Antibacterial Activity of Sodium Hypochlorite against Enterococcus faecalis and Candida albicans. Dent J (Basel) 2024; 12:46. [PMID: 38534270 DOI: 10.3390/dj12030046] [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: 01/23/2024] [Revised: 02/12/2024] [Accepted: 02/19/2024] [Indexed: 03/28/2024] Open
Abstract
We assessed the effect of different compositions and concentrations of two etidronate-containing irrigants on the antibacterial activity of sodium hypochlorite (SH) against Enterococcus faecalis and Candida albicans in vitro. Pure cultures of C. albicans and E. faecalis were isolated from root canal samples. The disc diffusion method was used to compare the antibacterial effect of pure SH and SH mixed with 9%, 15%, and 18% etidronate of two manufactures (dual rinse (DR); IsraDent (ID)) and EDTA. The pH and temperature of the solutions were measured immediately after mixing and within 40 min. The ANOVA revealed a significant influence of the type of irrigating solution on the C. albicans and E. faecalis inhibition zone diameters that ranged from 6.6 to 51.6 mm and from 6.4 to 12.4 mm, respectively. SH with DR 9% exhibited the highest effect against C. albicans. The antifungal activity of the other irrigants was SH = SH + DR15% = SH + DR18% = SH + ID9% > SH + EDTA > SH + ID15% > SH + ID18%. No significant differences in the anti-E. faecalis effect were revealed between the tested solutions except for the mixtures of SH and 15% and 18% ID, which exhibited no antiseptic effect. There was a strong positive correlation between antiseptic activity against both microorganisms and the pH values of the tested solutions. In conclusion, most etidronate formulations did not significantly hamper sodium hypochlorite activity against C. albicans and E. faecalis. The effect was concentration- and manufacturer-dependent.
Collapse
Affiliation(s)
- Nina Novozhilova
- Department of Therapeutic Dentistry, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Ksenia Babina
- Department of Therapeutic Dentistry, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Maria Polyakova
- Department of Therapeutic Dentistry, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Inna Sokhova
- Department of Therapeutic Dentistry, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Valeria Sherstneva
- Department of Therapeutic Dentistry, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Alexandr Zaytsev
- Institute of Linguistics and Intercultural Communication, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Irina Makeeva
- Department of Therapeutic Dentistry, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Anna Mikheikina
- Department of Therapeutic Dentistry, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| |
Collapse
|
6
|
Gottumukkala SNVS, Lakshmi MR, Penmetsa GS, Ramesh KSV, Pasupuleti MK, Bypalli V. Scanning electron microscopic analysis of 5% glycolic acid as a novel alternative to 17% ethylenediaminetetraacetic acid in root biomodification: An in vitro study. J Indian Soc Periodontol 2024; 28:79-83. [PMID: 38988961 PMCID: PMC11232807 DOI: 10.4103/jisp.jisp_150_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 03/04/2024] [Accepted: 03/28/2024] [Indexed: 07/12/2024] Open
Abstract
Background Nonsurgical periodontal therapy results in the formation of a smear layer which inhibits tissue regeneration. Root biomodification (RB) using various agents has been tried for the enhancement of new attachment formation. However, no substantial therapeutic advantages of currently available root conditioning agents have been reported emphasizing the need for additional biologically acceptable agents. Glycolic acid (GA) due to its antimicrobial nature and ability of initiation and proliferation of fibroblasts may potentially modify root surface enabling regeneration. Materials and Methods Eighty specimens from 40 single-rooted teeth were treated with 17% ethylenediaminetetraacetic acid (EDTA) and 5% GA and scanning electron microscopy analysis was done. The micrographs were examined for the evaluation of smear layer removal, total number of dentinal tubules, total number of patent dentinal tubules, mean diameter and surface area of dentinal tubules, and dentin erosion. Statistical analysis was done using unpaired t-test for intergroup comparison. Results The efficacy of smear layer removal (P = 0.01) and dentin erosion (P = 0.042) was significantly better in the GA group. Both the groups showed no difference in dentinal tubule-related parameters. Conclusion GA showed improved RB with greater smear layer removal and lesser dentin erosion, indicating its use as a potent alternative to the conventional EDTA root conditioning.
Collapse
Affiliation(s)
| | - Mikkili Rajya Lakshmi
- Department of Periodontics and Implantology, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India
| | - Gautami S. Penmetsa
- Department of Periodontics and Implantology, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India
| | - K. S. V. Ramesh
- Department of Periodontics and Implantology, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India
| | - Mohan Kumar Pasupuleti
- Department of Periodontics and Implantology, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India
| | - Vivek Bypalli
- Department of Periodontics and Implantology, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India
| |
Collapse
|
7
|
Iosif L, Dimitriu B, Niţoi DF, Amza O. Endodontic Dentistry: Analysis of Dentinal Stress and Strain Development during Shaping of Curved Root Canals. Healthcare (Basel) 2023; 11:2918. [PMID: 37998410 PMCID: PMC10671542 DOI: 10.3390/healthcare11222918] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 10/25/2023] [Accepted: 10/29/2023] [Indexed: 11/25/2023] Open
Abstract
BACKGROUND Endodontic shaping causes stress and strain in the root canal dentin. Dentin microcracks have the potential to be later followed by root fractures occurring under the occlusal load. The aim of our research was to theoretically determine the values of such dentinal states of stress and strain during the endodontic shaping of curved root canals using finite element analysis (FEA). METHODS To highlight the stress concentrations in dentin, two geometric models were created considering the volume of the curved dental root and the contact between the endodontic file and the root canal walls. The application of forces with different values was simulated both on a uniform curved root canal and on a root canal with an apical third curvature of 25° as they would be applied during the preparation of a root canal. RESULTS In the case of the first model, which was acted upon with a force of 5 N, the deformations of the root canal appeared along the entire working length, reaching the highest values in the apical third of the root, although there were no geometric changes in the shape of the root canal. Regarding the second root model, with an apical third curvature of 25°, although the applied force was 2 N, the deformations were accompanied by geometric changes in the shape of the root, especially in the upper part of the apical third. At a higher force of 7 N exerted on the endodontic file, the geometric shape changed, and the deformation reached extreme critical values. The resulting tensile stresses appearing in the experimental structure varied similarly to the deformations. CONCLUSIONS Significant stress and strain can develop, especially in the apical third of curved root canals during their shaping, and the risk of cracks is higher for endodontically treated teeth presenting severe curvatures in the apical third of the root.
Collapse
Affiliation(s)
- Laura Iosif
- Faculty of Dentistry, University of Medicine and Pharmacy “Carol Davila” Bucharest, 17–21 Calea Plevnei Street, Sector 1, 010221 Bucharest, Romania; (L.I.); (O.A.)
| | - Bogdan Dimitriu
- Faculty of Dentistry, University of Medicine and Pharmacy “Carol Davila” Bucharest, 17–21 Calea Plevnei Street, Sector 1, 010221 Bucharest, Romania; (L.I.); (O.A.)
| | - Dan Florin Niţoi
- Faculty of Industrial Engineering and Robotics, University POLITEHNICA of Bucharest, 313 Splaiul Independenței Street, 060042 Bucharest, Romania
| | - Oana Amza
- Faculty of Dentistry, University of Medicine and Pharmacy “Carol Davila” Bucharest, 17–21 Calea Plevnei Street, Sector 1, 010221 Bucharest, Romania; (L.I.); (O.A.)
| |
Collapse
|
8
|
Vinothkumar M, Karthikeyan BS, Janani K, Mahalaxmi S. Glycolic acid - A promising root canal chelator. AUST ENDOD J 2023; 49 Suppl 1:540-541. [PMID: 37178012 DOI: 10.1111/aej.12762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 04/21/2023] [Indexed: 05/15/2023]
Affiliation(s)
- Muralikrishnan Vinothkumar
- Department of Conservative Dentistry and Endodontics, SRM Dental College, Ramapuram, SRM Institute of Science and Technology, Chennai, India
| | | | - Krishnamachari Janani
- Department of Conservative Dentistry and Endodontics, SRM Dental College, Ramapuram, SRM Institute of Science and Technology, Chennai, India
| | - Sekar Mahalaxmi
- Department of Conservative Dentistry and Endodontics, SRM Dental College, Ramapuram, SRM Institute of Science and Technology, Chennai, India
| |
Collapse
|
9
|
Mikheikina A, Novozhilova N, Polyakova M, Sokhova I, Mun A, Zaytsev A, Babina K, Makeeva I. Knowledge, Attitude, and Practice towards Chelating Agents in Endodontic Treatment among Dental Practitioners. Dent J (Basel) 2023; 11:156. [PMID: 37504222 PMCID: PMC10378705 DOI: 10.3390/dj11070156] [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: 05/04/2023] [Revised: 06/16/2023] [Accepted: 06/20/2023] [Indexed: 07/29/2023] Open
Abstract
The use of chelating agents (CAs) in the endodontic irrigation protocol is required to dissolve the inorganic components of the smear layer. We aimed to assess the knowledge, attitude, and practice of dental professionals regarding the use of CAs during root canal treatment. A cross-sectional anonymous online survey was conducted among specialized endodontists and general dentists who routinely perform endodontic treatment and work in government-funded or private clinics in Moscow. The 8 min survey consisted of four parts: basic demographic data, knowledge (five items), attitude (four items), and practice (five items). We collected 376 completed questionnaires; a majority of the respondents were general dentists (87.5%) and worked in private clinics (77.4%). Most respondents (83.5%) showed a fair knowledge of the CAs used in endodontics, while 16.5% showed a poor knowledge of the topic. Small yet significant differences were found between endodontists and general practitioners and between dentists employed by private and government-funded clinics. A majority of dental practitioners (83%) demonstrated a positive attitude towards the use of CAs in endodontic treatment, and there were no differences among the study subgroups. Almost a third of the respondents always used chelating solutions during endodontic treatment, while 17% of the respondents did not use them at all. There were significant differences in this parameter between dentists working in private and government-funded clinics. Practice significantly correlated with attitude towards chelating agents and with knowledge of the topic. In conclusion, dental practitioners demonstrated a fair knowledge of CAs. Despite a positive attitude, 71% of the respondents did not use CAs for all endodontic patients.
Collapse
Affiliation(s)
- Anna Mikheikina
- Department of Therapeutic Dentistry, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Nina Novozhilova
- Department of Therapeutic Dentistry, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Maria Polyakova
- Department of Therapeutic Dentistry, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Inna Sokhova
- Department of Therapeutic Dentistry, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Anastasia Mun
- Department of Therapeutic Dentistry, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Alexandr Zaytsev
- Institute of Linguistics and Intercultural Communication, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Ksenia Babina
- Department of Therapeutic Dentistry, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Irina Makeeva
- Department of Therapeutic Dentistry, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| |
Collapse
|
10
|
Maso PC, Souza MA, Borba M, Goedel F, Farina AP, Cecchin D, Maso DC, Dogenski LC, Corazza PH, Palhano HS, Rauber BF, De Carli JP. Influence of photodynamic therapy, different final irrigants, and ultrasonic activation on the bond strength of glass fiber posts to root dentin. Photodiagnosis Photodyn Ther 2022; 40:103180. [PMID: 36323366 DOI: 10.1016/j.pdpdt.2022.103180] [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: 08/15/2022] [Revised: 10/15/2022] [Accepted: 10/27/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVE To evaluate the influence of photodynamic therapy (PDT), different final irrigants, and ultrasonic activation (US) on the bond strength of glass fiber posts (GFP) to root dentin. METHODS One hundred twenty bovine roots were divided into 12 groups according to PDT application, the type of final endodontic irrigant, and US. The samples were divided into 12 groups (n = 10): G1-DW(distilled water); G2-DW+US; G3-17% EDTA; G4-17% EDTA+US; G5-17% GA (glycolic acid); G6-17% GA+US; G7-PDT+DW; G8-PDT+DW+US; G9-PDT+17% EDTA; G10-PDT+17% EDTA+US; G11-PDT+17% GA; G12-PDT+17% GA+US. After cementing the glass fiber posts with resin cement, roots were sectioned into 2-mm-thick slices. One slice from the cervical third and another from the middle third were used for the push out test (PO), and the other two for the diametral compression test (DC). Thus, 10 samples were obtained per third for each mechanical test (n = 10). Kruskal-Wallis and Student-Newman-Keuls tests were used to analyze PO and DC data, and Pearson's correlation test was used to verify the relationship between the variables. Failure patterns were analyzed with chi-square test. RESULTS Significant differences were found in the PO test among the experimental groups (p < 0.001; power=1.00). PDT improved bond strength when using EDTA. PDT and US increased bond strength when using GA. Favorable failure patterns occurred more frequently in Group GA+US. There was no correlation between data obtained with PO and DC tests (r = 0.112; p = 0.729). CONCLUSION PDT provided the highest bond strength values of GFP to root dentin when associated with GA and US or when associated only with EDTA.
Collapse
Affiliation(s)
| | | | - Márcia Borba
- School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil
| | - Fábio Goedel
- School of Engineering, University of Passo Fundo, Passo Fundo, RS, Brazil
| | - Ana Paula Farina
- School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil
| | - Doglas Cecchin
- School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil
| | | | | | | | | | | | | |
Collapse
|
11
|
Aravelli S, Veeramachaneni C, Dundigalla S. Comparative evaluation of push-out bond strength of bioceramic and epoxy sealers after using various final irrigants: An in vitro study. J Conserv Dent 2022; 25:145-150. [PMID: 35720830 PMCID: PMC9205351 DOI: 10.4103/jcd.jcd_10_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 01/11/2022] [Accepted: 01/20/2022] [Indexed: 11/06/2022] Open
Abstract
Aim: The aim of the study is to compare the push-out bond strength of bioceramic and epoxy sealers after using various final irrigants. Materials and Methods: Hundred single-rooted teeth were divided into two groups (n = 50) according to the sealer used: Group A: Bio C (bioceramic sealer), Group B: Dia-Proseal (epoxy sealer). Each group was subdivided into five subgroups (n = 10) according to the final irrigation protocol: Group A1 and B1 – 5% glycolic acid (GA), Group A2 and B2 – 17% GA, Group A3 and B3 – 0.2% chitosan, Group A4 and B4 – 17% ethylenediaminetetraacetic acid, and Group A5 and B5 – 0.9% saline. Samples were obturated in combination with one of the mentioned sealers and were allowed to set for 1 week. Two horizontal slices were obtained from each sample and subjected to push-out test. Statistical Analysis: The data were statistically analyzed using two-way ANOVA and independent Student's t-test. Results: Both the sealers exhibited higher push-out bond strength after treatment with GA with no significant difference between 5% and 17% GA. Bio C sealer with GA as final irrigant showed higher bond strength than Dia-Proseal (P < 0.05). Conclusion: The push-out bond strength of the sealer was significantly affected by the final irrigation solution used. The highest push-out bond strength was seen with Bio C sealer after treatment with GA with no significant difference between 5% and 17% GA.
Collapse
|
12
|
de Andrade Marafiga F, Barbosa AFA, Silva EJNL, Souza MA, Farina AP, Cecchin D. Effect of glycolic acid and EDTA on dentin mechanical properties. AUST ENDOD J 2021; 48:27-31. [PMID: 34932249 DOI: 10.1111/aej.12606] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 11/16/2021] [Accepted: 12/05/2021] [Indexed: 11/26/2022]
Abstract
The aim of this study was to evaluate the effect of glycolic acid (GA) and EDTA on dentin mechanical properties. For the cohesive strength, flexural strength and fracture strength tests, the hourglass of root dentin, dentin sticks and roots standardised to 1 mm thickness were used respectively. ANOVA and Tukey tests were used for statistical analysis (P < 0.05). The results showed that EDTA and GA 17% reduced the cohesive strength values when compared to distilled water (control; P = 0.0022 and P = 0.0016 respectively), whereas the values for GA 10% group were similar to those of the control group (P = 0.093). No statistically significant difference was found among the groups for the flexural strength test (P = 0.1974). Fracture strength test showed that EDTA and GA 17% were statistically similar to each other (P = 0.7694) and statistically inferior to GA 10% (P = 0.0007 and P = 0.0004 respectively). It was concluded that 10% GA showed fewer negative effects on dentin mechanical properties.
Collapse
Affiliation(s)
| | | | - Emmanuel João Nogueira Leal Silva
- Department of Endodontics, Rio de Janeiro State University, Rio de Janeiro, Brazil.,Department of Endodontics, Grande Rio University, Rio de Janeiro, Brazil
| | - Matheus Albino Souza
- Department of Restorative Dentistry, University of Passo Fundo, Passo Fundo, Brazil
| | - Ana Paula Farina
- Department of Restorative Dentistry, University of Passo Fundo, Passo Fundo, Brazil
| | - Doglas Cecchin
- Department of Restorative Dentistry, University of Passo Fundo, Passo Fundo, Brazil
| |
Collapse
|
13
|
Abu Zeid ST, Bastawy HA, Mokeem Saleh AA. Natural Extracts as Biological Smear Layer Removing Agents: A Literature Review. J Int Soc Prev Community Dent 2021; 11:589-600. [PMID: 35036368 PMCID: PMC8713488 DOI: 10.4103/jispcd.jispcd_125_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 05/08/2021] [Accepted: 05/13/2021] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVES The aim of this article is to identify whether natural irrigants are better than synthetic conventional irrigants for smear layer removal and to analyze their influence on mechanical and chemical radicular dentin properties. MATERIALS AND METHODS The last electronic search was performed on June 2020 through five databases, limited to articles either published or accepted for publication in the English language using the following keywords: "Natural extracts" or "Fruit and plant extracts" and "Smear layer removal." RESULTS According to the inclusion criteria, 36 articles were included. Most studies revealed that apple or apple cider vinegars, grape seed extract, citrus aurantifolia, 5-10% glycolic acid, and 0.5-1% phytic acid effectively removed the smear layer better or similar to synthetic conventional agents. CONCLUSION Natural irrigants are effective smear layer removing agents with the least deteriorated effect on mechanical and chemical radicular dentin properties compared with synthetic agents.
Collapse
Affiliation(s)
- Sawsan Taha Abu Zeid
- Endodontic Department, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia,Endodontic Department, Faculty of Dentistry, Cairo University, Giza, Egypt,Address for correspondence: Prof. Sawsan Taha Abu Zeid, Endodontic Department, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia. E-mail:
| | - Hagar A Bastawy
- Endodontic Department, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia,Endodontic Department, Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt
| | - Abeer A Mokeem Saleh
- Endodontic Department, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| |
Collapse
|
14
|
Experimental Solution of Chitosan and Nanochitosan on Wettability in Root Dentine: In Vitro Model Prior Regenerative Endodontics. Int J Biomater 2021; 2021:8772706. [PMID: 34754309 PMCID: PMC8572641 DOI: 10.1155/2021/8772706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 10/04/2021] [Accepted: 10/11/2021] [Indexed: 11/25/2022] Open
Abstract
Aims To compare the effect of CS and CSnp on the wettability in root dentine with other irrigation protocols with an experimental in vitro model prior regenerative endodontics. Methods and Material. An in vitro experimental study that included eighty hemisected human root distributed into 8 groups: G1- distilled water; G2- 1% NaOCl/17% EDTA; G3- hypochlorous acid 0.025% HOCl, G4- 1% NaOCl/0.025% HOCl/17% EDTA, G5- 0.2 g/100 mL CS, G6- 1% NaOCl/0.2 g/100 mL CS, G7- CSnp, and G8- 1% NaOCl/CSnp. The wettability analysis calculated the contact angle (θ) between a drop of a blood-like and root dentinal surface; topographic characterization with scanning electron microscopy (SEM) quantified the diameter and number of tubules per area; spectroscopy infrared analyses (IR-S) identified chemical changes in the inorganic (phosphate/carbonate) and organic phase (amide/methyl). Statistical analysis: a linear mixed model, Kruskal–Wallis, and Holm–Bonferroni correction (P < 0.05) were used. Results Significantly higher wettability for G2 (27.1 (P = 0.0001)) was found. A mean value of 67°±°for experimental groups (P = 0.07) was found, and we did not identify differences between them. The SEM identified greater tubular opening and erosion for G4 and greater dentinal permeability per area for NaOCl/CS. IR-S identified dentinal organic integrity with NaOCl-CS/CSnp compared to organic reduction promoted for NaOCl/EDTA. Conclusions This in vitro dentin determined an indirect association between the wettability and organic contents. The oxidative effect of NaOCl could be neutralized by CS-CSnp, and consequently, the wettability of the substrate decreases.
Collapse
|
15
|
Venkataraman KJ, Boominathan SK, Nagappan R, Abraham CS, Kaliyaperumal A, Nachimuthu J, Premkumar MM. Efficacy of Glycolic Acid on Debris and Smear Removal as a Final Rinse Solution in Curved Canals: A Scanning Electron Microscope Study. J Pharm Bioallied Sci 2021; 13:S1603-S1608. [PMID: 35018038 PMCID: PMC8686924 DOI: 10.4103/jpbs.jpbs_310_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/15/2021] [Accepted: 07/27/2021] [Indexed: 12/03/2022] Open
Abstract
AIM This study aims to compare intraradicular smear layer removal efficacy of different concentrations of glycolic acid (GA), 17% ethylenediaminetetraacetic acid (EDTA), and 10% citric acid (CA) as final rinses in the canals of curved mesial root of mandibular first molars using the specific irrigant protocols. MATERIALS AND METHODS Fifty-eight mandibular first permanent molars with 15°-30° of curvature of the mesial roots were selected, standardized, mesiobuccal canal prepared using the rotary instrumentation. Sodium hypochlorite was used as initial rinse solution (8 ml). The samples were divided into control (n = 5) (I - Normal saline and II - 17% EDTA) and experimental groups (n = 8) (Groups III, IV, V, VI, VII, and VIII) based on the type of final rinse solution (5 ml) used, i.e. 2.5% GA, 5% GA, 10% GA, 17% GA, 37% GA, and 10% CA. Samples were split buccolingually, dehydrated, splutter coated, and examined under a scanning electron microscope. RESULTS Group IV presented the least amounts of smear among the GA experimental groups at the apical, middle, and coronal one-thirds of the root canal with a mean value of 2.6 ± 1.012, and on comparison with Group II, the results were comparable, and no significant difference found statistically (P > 0.05). CONCLUSION The use of GA as final rinse solution for biomechanical preparation during endodontic therapy seems promising. Further evaluation in a clinical setting is recommended.
Collapse
Affiliation(s)
- Karunakaran Jeyaraman Venkataraman
- Department of Conservative Dentistry, JKK Nataraja Dental College and Hospital, Komarapalayam, Tamil Nadu, India,Address for correspondence: Dr. J. V. Karunakaran, Department of Conservative Dentistry, JKK Nataraja Dental College and Hospital, Komarapalayam - 638 183, Tamil Nadu, India. E-mail:
| | - Suresh Krishna Boominathan
- Department of Conservative Dentistry, JKK Nataraja Dental College and Hospital, Komarapalayam, Tamil Nadu, India
| | - Ragavendran Nagappan
- Department of Conservative Dentistry, JKK Nataraja Dental College and Hospital, Komarapalayam, Tamil Nadu, India
| | - Chris Susan Abraham
- Department of Conservative Dentistry, JKK Nataraja Dental College and Hospital, Komarapalayam, Tamil Nadu, India
| | - Anbarasi Kaliyaperumal
- Department of Oral Medicine and Radiology, Faculty of Dental Sciences, Sri Ramachandra Institute of Higher Education and Research, Chennai, Tamil Nadu, India
| | - Jayaprakash Nachimuthu
- Department of Conservative Dentistry, JKK Nataraja Dental College and Hospital, Komarapalayam, Tamil Nadu, India
| | | |
Collapse
|