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Abdellatif D, Pisano M, Gullà R, Sangiovanni G, Singh S, Giordano F, Buonavoglia A, Iandolo A. Dentinal tubule penetration following ultrasonic, sonic, and single-cone technique of a biosealer: An ex vivo study. JOURNAL OF CONSERVATIVE DENTISTRY AND ENDODONTICS 2024; 27:331-336. [PMID: 38634033 PMCID: PMC11019811 DOI: 10.4103/jcde.jcde_244_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 11/10/2023] [Accepted: 12/30/2023] [Indexed: 04/19/2024]
Abstract
Background The endodontic space is complex, and using a single-cone obturation technique fails to ensure a complete filling. Introduction This study aimed to investigate the effect of ultrasonic activation, sonic activation, and single-cone technique of a biosealer on its dentinal tubular penetration. Materials and Methods In the experiment, single-root mandibular premolars were randomly assigned to three groups (n = 20): group A, ultrasonic activation; Group B, sonic activation; and Group C, single-cone technique. Penetration of the fluorescently labeled biosealer was investigated using a confocal laser scanning microscope. Results The data were statistically analyzed using Kruskal-Wallis and Mann-Whitney tests (P = 0.05). The highest penetration of biosealer was observed in Group A, followed by Group B (P < 0.05). Conclusions Dentinal tubule penetration of biosealer was significantly improved by ultrasonic and sonic activation techniques.
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Affiliation(s)
- Dina Abdellatif
- Department of Medicine and Surgery, University of Salerno, Salerno, Italy
| | - Massimo Pisano
- Department of Medicine and Surgery, University of Salerno, Salerno, Italy
| | - Renato Gullà
- Independent Researcher, Ethiopian Dental Professional Association, Nerul, Navi Mumbai, Maharashtra, India
| | | | - Shishir Singh
- Department of Conservative Dentistry and Endodontics, Terna Dental College, Nerul, Navi Mumbai, Maharashtra, India
| | - Francesco Giordano
- Department of Medicine and Surgery, University of Salerno, Salerno, Italy
| | - Alessio Buonavoglia
- Department of Biomedical and Neuromotor Sciences, School of Dentistry, University of Bologna, Bologna, Italy
| | - Alfredo Iandolo
- Department of Medicine and Surgery, University of Salerno, Salerno, Italy
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Iandolo A, Pisano M, Buonavoglia A, Giordano F, Amato A, Abdellatif D. Traditional and Recent Root Canal Irrigation Methods and Their Effectiveness: A Review. Clin Pract 2023; 13:1059-1072. [PMID: 37736930 PMCID: PMC10514886 DOI: 10.3390/clinpract13050094] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 08/25/2023] [Accepted: 08/25/2023] [Indexed: 09/23/2023] Open
Abstract
According to contemporary dental standards, the primary goal of endodontic therapy is the chemo-mechanical cleaning of the complex root canal system. Watering root canals with approved solutions and activating them are essential parts of this operation. This review outlines various irrigant activation methods for root canal therapy. Specifically, a comparison among the methods of manual dynamic activation, sonics (subsonic, sonic, and ultrasonic), internal heating, and lasers, was conducted. The results in this work were gathered using Scopus, Web of Science, Google Scholar, and PubMed databases by searching the following keywords: sodium hypochlorite, cleaning, activation, and irrigation methods. The present work concluded that the use of irrigant activation has a greater benefit than its absence. Regardless, it is impossible to point to a single effective activation method.
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Affiliation(s)
- Alfredo Iandolo
- Department of Medicine and Surgery, School of Dentistry, University of Salerno, 84081 Salerno, Italy; (M.P.); (F.G.); (A.A.)
| | - Massimo Pisano
- Department of Medicine and Surgery, School of Dentistry, University of Salerno, 84081 Salerno, Italy; (M.P.); (F.G.); (A.A.)
| | - Alessio Buonavoglia
- Department of Biomedical and Neuromotor Sciences, School of Dentistry, University of Bologna, 40125 Bologna, Italy;
| | - Francesco Giordano
- Department of Medicine and Surgery, School of Dentistry, University of Salerno, 84081 Salerno, Italy; (M.P.); (F.G.); (A.A.)
| | - Alessandra Amato
- Department of Medicine and Surgery, School of Dentistry, University of Salerno, 84081 Salerno, Italy; (M.P.); (F.G.); (A.A.)
| | - Dina Abdellatif
- Department of Endodontics, Faculty of Dentistry, University of Alexandria, Alexandria 21531, Egypt;
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Iandolo A, Amato A, Pisano M, Sangiovanni G, Abdellatif D, Fornara R, Simeone M. Histological Evaluation of Root Canals by Performing a New Cleaning Protocol “RUA” in Endodontic Surgery. Dent J (Basel) 2023; 11:dj11030078. [PMID: 36975575 PMCID: PMC10047649 DOI: 10.3390/dj11030078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 02/11/2023] [Accepted: 03/08/2023] [Indexed: 03/12/2023] Open
Abstract
Aim: To enhance cleaning during retro-preparation in endodontic microsurgery. Materials and Methods: Forty mandibular premolars were instrumented, filled with a single cone technique, and then retro-preparation was performed and assigned to experiment A. In group A1, the cavity created by the retro preparation was cleansed with 2 mL of normal sterile saline. In group A2, the retro cavity was cleaned with 2 mL of sterile saline after the retro preparation. All the irrigation solutions mentioned above were delivered using an endodontic needle with a lateral vent and a gauge of 30. Subsequently, in group A2, 17% EDTA gel and 5.25% gel were inserted into the cavity and activated using ultrasonic tips. After the irrigation protocols, the specimens were decalcified for histological evaluation. Results: In the experiment, the amount of hard tissue debris was significantly greater in group A1 compared to group A2 (p < 0.05). Conclusions: The samples in group A2, where the new protocol was performed, showed statistically significant results.
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Affiliation(s)
- Alfredo Iandolo
- Department of Medicine and Surgery, University of Salerno, 84084 Salerno, Italy
- Correspondence: or ; Tel.: +39-3287028233
| | - Alessandra Amato
- Department of Medicine and Surgery, University of Salerno, 84084 Salerno, Italy
| | - Massimo Pisano
- Department of Medicine and Surgery, University of Salerno, 84084 Salerno, Italy
| | | | - Dina Abdellatif
- Department of Endodontics, Faculty of Dentistry, University of Alexandria, Alexandria 21526, Egypt
| | | | - Michele Simeone
- Department of Endodontics, Faculty of Dentistry, University of Naples, Federico II, 80126 Naples, Italy
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4
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Iandolo A, Pisano M, Abdellatif D, Sangiovanni G, Pantaleo G, Martina S, Amato A. Smear Layer and Debris Removal from Root Canals Comparing Traditional Syringe Irrigation and 3D Cleaning: An Ex Vivo Study. J Clin Med 2023; 12:jcm12020492. [PMID: 36675419 PMCID: PMC9867447 DOI: 10.3390/jcm12020492] [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: 11/30/2022] [Revised: 12/21/2022] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
Background: Endodontic treatment objectives comprise eliminating or decreasing bacterial load inside the complex endodontic space. Removing the smear layer and debris becomes mandatory to achieve good three-dimensional (3D) cleaning. Aim: This study assesses the difference in smear layer removal using the 3D cleaning technique and traditional syringe needle irrigation. The 3D cleaning technique includes the ultrasonic activation of intracanal-heated NaOCl. Materials and Methods: Our current study used single-rooted human mandibular premolar teeth to test the earlier-mentioned technique (n = 30). Initially, an endodontic access cavity was performed. Consequently, specimens were randomly distributed into three study groups according to irrigation protocol. The groups were Group 1, where the traditional syringe needle irrigation system was applied; Group 2, where the 3D cleaning technique was performed; and Group 3, in which teeth remained uncleaned as it was regarded as the control group. Once the experiment was completed, the teeth were decoronated at the cementoenamel junction (CEJ) and examined using scanning electron microscopy (SEM). Debris and smear layers were viewed in 1000× magnification and scored. Results: Statistical analysis was performed with a standard statistical software package (SPSS, version 28.0; SPSS IBM, Armonk, NY, USA). Data were analyzed with a nonparametric analysis of variance (Kruskal−Wallis ANOVA) among the groups tested and among the thirds of the canals. The level of significance was set at p < 0.05. A statistically significant (p < 0.05) lower mean smear layer and debris score was observed in both study groups compared to the control group. Group 2 showed better results compared to Group 1. Conclusions: The present study concluded that the 3D cleaning technique is an effective irrigation method for removing debris and smear layers. Future research, such as CLSM (Confocal Laser Scanning Microscopy) and Histological study, should be employed to confirm this study’s conclusion.
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Affiliation(s)
- Alfredo Iandolo
- Department of Medicine and Surgery, University of Salerno, 84081 Salerno, Italy
- Correspondence: ; Tel.: +39-328-7028-233
| | - Massimo Pisano
- Department of Medicine and Surgery, University of Salerno, 84081 Salerno, Italy
| | - Dina Abdellatif
- Department of Endodontics, Faculty of Dentistry, University of Alexandria, Alexandria 21531, Egypt
| | | | - Giuseppe Pantaleo
- Department of Medicine and Surgery, University of Salerno, 84081 Salerno, Italy
| | - Stefano Martina
- Department of Medicine and Surgery, University of Salerno, 84081 Salerno, Italy
| | - Alessandra Amato
- Department of Medicine and Surgery, University of Salerno, 84081 Salerno, Italy
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5
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Iandolo A. Modern Endodontics. Dent J (Basel) 2022; 11:dj11010011. [PMID: 36661548 PMCID: PMC9857497 DOI: 10.3390/dj11010011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 12/28/2022] [Indexed: 12/31/2022] Open
Abstract
The goal of modern endodontics is the complete removal of damaged tissue and bacteria from the endodontic space [...].
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Affiliation(s)
- Alfredo Iandolo
- Department of Medicine and Surgery, University of Salerno, 84081 Salerno, Italy
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Intentional Replantation of Single-Rooted and Multi-Rooted Teeth: A Systematic Review. Healthcare (Basel) 2022; 11:healthcare11010011. [PMID: 36611471 PMCID: PMC9819326 DOI: 10.3390/healthcare11010011] [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: 11/30/2022] [Revised: 12/17/2022] [Accepted: 12/18/2022] [Indexed: 12/24/2022] Open
Abstract
The technique of intentional replantation can provide a second chance to save teeth that would be destined for extraction. Therefore, the present systematic review aimed primarily to estimate tooth survival after intentional replantation and secondarily to compare treatment outcomes in single-rooted and multi-rooted teeth. The study protocol was developed before the analysis according to the Preferred Reporting Items for Systematic Review and Meta-Analyses guidelines. Articles were electronically searched in PubMed/MEDLINE, the COCHRANE library and Google Scholar by two independent reviewers, and those that met the eligibility criteria were included. A statistical analysis using the chi-square test with a p-value of <0.05 was performed on the reported outcomes of intentional replantation. A total of 44 single-rooted replanted teeth with five failures (11.36%) and 42 multi-rooted replanted teeth with six failures (14.28%) were reported in the literature, corresponding to a survival rate of 88.64% and 85.57%, respectively. The overall survival rate for the replantation procedure was 86.7%, indicating that intentional replantation can be considered a safe therapeutic choice, with no statistically significant difference between the survival rates of single-rooted and multi-rooted replanted teeth.
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Two-Year Healing Success Rates after Endodontic Treatment Using 3D Cleaning Technique: A Prospective Multicenter Clinical Study. J Clin Med 2022; 11:jcm11206213. [PMID: 36294533 PMCID: PMC9604672 DOI: 10.3390/jcm11206213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 10/16/2022] [Accepted: 10/19/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Various irrigation techniques for cleansing the endodontic space have been proposed, and internal heating combined with ultrasonic activation (3D cleaning technique) is considered an effective technique. This prospective multicenter clinical study aims to evaluate healing rates for teeth after root canal treatment utilizing the 3D cleaning technique and to report predictive values for success. MATERIAL AND METHODS Ninety patients referred for a root canal treatment were included. All enrolled patients were treated with the 3D cleaning protocol. Four endodontists performed the clinical procedures and follow-up evaluations. Preoperative, postoperative and follow-up data were gathered from the consented patients. Each patient was assessed for any clinical signs or symptoms. Afterwards, two trained, blinded, and independent evaluators scored the subject's periapical radiographs. This score was made by checking for the presence or absence of apical periodontitis using the periapical index (PAI). Then, the teeth were classified as healing or healed and were considered a success based on a cumulative success rate of healing. Statistical analysis was performed using the Fisher's exact test, Pearson correlation, and logistic regression analyses of the preoperative prognostic factors at a 0.05 significance level. RESULTS 90 patients were evaluated at two years with a follow-up rate of 97.7%. The cumulative success rate of healing was 95.4%. Eight predicting aspects were identified by employing bivariate analyses. Then, using logistic analyses, the two prognostic significant variables directly correlated to healing were the preoperative presence of periapical index (p value = 0.016). CONCLUSIONS In this two-year clinical study, the cumulative success rate of healing was 95.4% when patients were treated with the 3D cleaning protocol.
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Barbhai S, Shetty R, Joshi P, Mehta V, Mathur A, Sharma T, Chakraborty D, Porwal P, Meto A, Wahjuningrum DA, Luke AM, Pawar AM. Evaluation of Root Anatomy and Canal Configuration of Human Permanent Maxillary First Molar Using Cone-Beam Computed Tomography: A Systematic Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:10160. [PMID: 36011794 PMCID: PMC9408299 DOI: 10.3390/ijerph191610160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/09/2022] [Accepted: 08/14/2022] [Indexed: 06/15/2023]
Abstract
The aim of this paper is to review the literature on root canal configuration (RCC) and the frequency of occurrence of a second mesiobuccal canal (MB) in human permanent maxillary first molars where cone-beam computed tomography (CBCT) is used. Online electronic databases such as PubMed-Medline, Embase, Scopus and Cochrane Library were searched using appropriate keywords from the earliest available date until 12th June 2022, without restriction on language. In the mesiobuccal root, type I was the most frequent (33.29%), followed by types II and IV (27.18% and 26.36%, respectively). Moreover, 68.2% of maxillary first molars had a second MB canal. For both the distobuccal and palatal roots, type I was the most prevalent, with 99.08% and 97.83% occurrence, respectively. All other types were infrequent. Type I RCC is most frequent in all the roots of the maxillary first molars. Hence, care must be taken during biomechanical preparation of the MB roots.
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Affiliation(s)
- Sourabh Barbhai
- Department of Conservative Dentistry & Endodontics, Dr. D.Y. Patil Dental College and Hospital, Dr. D.Y. Patil Vidyapeeth, Pimpri, Pune 411018, Maharashtra, India
| | - Rajesh Shetty
- Department of Conservative Dentistry & Endodontics, Dr. D.Y. Patil Dental College and Hospital, Dr. D.Y. Patil Vidyapeeth, Pimpri, Pune 411018, Maharashtra, India
| | - Poonam Joshi
- Department of Conservative Dentistry & Endodontics, Dr. D.Y. Patil Dental College and Hospital, Dr. D.Y. Patil Vidyapeeth, Pimpri, Pune 411018, Maharashtra, India
| | - Vini Mehta
- Department of Public Health Dentistry, Dr. D.Y. Patil Dental College and Hospital, Dr. D.Y. Patil Vidyapeeth, Pimpri, Pune 411018, Maharashtra, India
| | - Ankita Mathur
- STAT SENSE, Srushti 10, Sector 1 D, Amba Township Pvt. Ltd., Trimandir, Adalaj 382421, Gujarat, India
| | - Tanvi Sharma
- STAT SENSE, Srushti 10, Sector 1 D, Amba Township Pvt. Ltd., Trimandir, Adalaj 382421, Gujarat, India
| | - Damini Chakraborty
- Bhowal’s Dental and Implant Clinic, Bengal GreenField Heights, Galaxy-6FS, beside Apollo Pharmacy, DJ Block (Newtown), Newtown, Kolkata 700136, West Bengal, India
| | - Priyanka Porwal
- STAT SENSE, Srushti 10, Sector 1 D, Amba Township Pvt. Ltd., Trimandir, Adalaj 382421, Gujarat, India
| | - Aida Meto
- Department of Dentistry, Faculty of Dental Sciences, University of Aldent, 1007 Tirana, Albania
| | - Dian Agustin Wahjuningrum
- Department of Conservative Dentistry, Faculty of Dental Medicine, Universitas Airlingga, Surabaya 60132, East Java, Indonesia
| | - Alexander Maniangat Luke
- Department of Clinical Sciences, College of Dentistry, Ajman University, Ajman 346, United Arab Emirates
- Centre of Medical and Bio-allied Health Sciences Research, Ajman University, Ajman 346, United Arab Emirates
| | - Ajinkya M. Pawar
- Department of Conservative Dentistry and Endodontics, Nair Hospital Dental College, Mumbai 400008, Maharashtra, India
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Special Issue “The State of the Art in Endodontics” Part II. J Clin Med 2022; 11:jcm11154511. [PMID: 35956126 PMCID: PMC9369801 DOI: 10.3390/jcm11154511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 07/30/2022] [Indexed: 11/17/2022] Open
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10
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Three-Dimensional Evaluation of the Root Apex of Permanent Maxillary Premolars: A Multicentric Study. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12126159] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Aim: Modern endodontics has advanced radically in the recent years, and recently, it has been focused on the concept of mini-invasive treatments. This study aimed to evaluate the sections of the root apices at 1 mm from the radiographic apex using a high-resolution CBCT. Materials and Methods: The current study was performed in three different dental centers. One hundred maxillary permanent premolars (50 first and 50 s premolars) were analyzed using measurement software of the CBCT radiographic pictures. The mesio-distal (M-D) and bucco–palatal (B-P) sections were measured at 1 mm from the radiographic apex of each root. The section of 0.3 mm or less, 1 mm from the anatomical apex of the upper premolars, was decided as the limit value. All values were statistically analyzed. Results: The mean value in the 304 sections analyzed was 1.03 (±0.37). Only 19 sections (6.3%) had measurements less than or equal to 0.3 mm. All these 19 sections were from first premolars (p = 0.002). Conclusions: Based on the data obtained, the authors recommend performing conservative shaping when endodontically treating first maxillary premolars, especially when a pre-operative CBCT to evaluate the actual apical dimensions cannot be acquired.
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Special Issue “The State of the Art in Endodontics”. J Clin Med 2022; 11:jcm11092329. [PMID: 35566459 PMCID: PMC9105845 DOI: 10.3390/jcm11092329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 04/21/2022] [Indexed: 02/01/2023] Open
Abstract
Currently, the term “modern endodontics” is used more often due to contemporary applied science and original materials that have been developed in recent years [...]
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Di Spirito F, Scelza G, Fornara R, Giordano F, Rosa D, Amato A. Post-Operative Endodontic Pain Management: An Overview of Systematic Reviews on Post-Operatively Administered Oral Medications and Integrated Evidence-Based Clinical Recommendations. Healthcare (Basel) 2022; 10:healthcare10050760. [PMID: 35627897 PMCID: PMC9141195 DOI: 10.3390/healthcare10050760] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 04/13/2022] [Accepted: 04/18/2022] [Indexed: 01/08/2023] Open
Abstract
Endodontic treatment comprises the overall management of pre-, intra- and post-operative symptoms, including post-operative endodontic pain, considered as a complication susceptible of chronicization. Post-operative pain is very common and highly unpreventable and has a multi-factorial etiology and a potential pathogenic link to the acute inflammation of the periapical area, secondary to localized chemical, mechanical, host and/or microbial damage occurring during endodontic treatment. Considering the multitude of heterogeneous technical and pharmacological approaches proposed to control post-operative endodontic pain, the present study primarily comprised an overview of systematic reviews of systematic reviews of randomized clinical trials, summarizing findings on post-operatively administered oral medications for post-operative endodontic pain control, in order to note the most effective type and dosage of such drugs. Secondarily, a narrative review of the current evidence on technical solutions to be observed during endodontic treatment procedures, to control post-operative pain, was conducted to provide integrated evidence-based clinical recommendations for optimal post-operative endodontic pain management.
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Affiliation(s)
- Federica Di Spirito
- Department of Medicine, Surgery and Dentistry “Schola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (G.S.); (F.G.); (D.R.); (A.A.)
- Correspondence: or
| | - Giuseppe Scelza
- Department of Medicine, Surgery and Dentistry “Schola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (G.S.); (F.G.); (D.R.); (A.A.)
| | | | - Francesco Giordano
- Department of Medicine, Surgery and Dentistry “Schola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (G.S.); (F.G.); (D.R.); (A.A.)
| | - Donato Rosa
- Department of Medicine, Surgery and Dentistry “Schola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (G.S.); (F.G.); (D.R.); (A.A.)
| | - Alessandra Amato
- Department of Medicine, Surgery and Dentistry “Schola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (G.S.); (F.G.); (D.R.); (A.A.)
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Niavarzi S, Ghabraei S, Malekpour F. Mandibular Second Premolar with Four Canals: A Case Report. IRANIAN ENDODONTIC JOURNAL 2022; 17:209-211. [PMID: 36703696 PMCID: PMC9868995 DOI: 10.22037/iej.v17i4.38604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 09/02/2022] [Accepted: 09/18/2022] [Indexed: 01/28/2023]
Abstract
The mandibular second premolar can be considered one of the most challenging teeth to treat endodontically; due to the complexity of its root canal morphology and increased incidence of multiple canals. The knowledge of internal anatomy of root canals and their possible variations as well as use of magnification, e.g. operating microscope, radiographic examination and illumination, can increase the chances of finding additional canals and contribute to the success of endodontic treatment. The purpose of the current investigation is to report the successful endodontic treatment of a mandibular second premolar with 4 canals; all of them in one single root.
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Affiliation(s)
- Soheil Niavarzi
- Department of Endodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Sholeh Ghabraei
- Department of Endodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Malekpour
- Department of Endodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran,Corresponding author: Fatemeh Malekpour, Department of Endodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
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14
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Roda-Casanova V, Pérez-González A, Zubizarreta-Macho Á, Faus-Matoses V. Fatigue Analysis of NiTi Rotary Endodontic Files through Finite Element Simulation: Effect of Root Canal Geometry on Fatigue Life. J Clin Med 2021; 10:jcm10235692. [PMID: 34884394 PMCID: PMC8658234 DOI: 10.3390/jcm10235692] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 11/26/2021] [Accepted: 11/29/2021] [Indexed: 10/26/2022] Open
Abstract
This article describes a numerical procedure for estimating the fatigue life of NiTi endodontic rotary files. An enhanced finite element model reproducing the interaction of the endodontic file rotating inside the root canal was developed, which includes important phenomena that allowed increasing the degree of realism of the simulation. A method based on the critical plane approach was proposed for extracting significant strain results from finite element analysis, which were used in combination with the Coffin-Manson relation to predict the fatigue life of the NiTi rotary files. The proposed procedure is illustrated with several numerical examples in which different combinations of endodontic rotary files and root canal geometries were investigated. By using these analyses, the effect of the radius of curvature and the angle of curvature of the root canal on the fatigue life of the rotary files was analysed. The results confirm the significant influence of the root canal geometry on the fatigue life of the NiTi rotary files and reveal the higher importance of the radius of curvature with respect to the angle of curvature of the root canal.
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Affiliation(s)
- Victor Roda-Casanova
- Department of Mechanical Engineering and Construction, Universitat Jaume I, 12071 Castelló de la Plana, Spain; (V.R.-C.); (A.P.-G.)
| | - Antonio Pérez-González
- Department of Mechanical Engineering and Construction, Universitat Jaume I, 12071 Castelló de la Plana, Spain; (V.R.-C.); (A.P.-G.)
| | - Álvaro Zubizarreta-Macho
- Department of Dentistry, Alfonso X el Sabio University, 28691 Madrid, Spain
- Department of Orthodontics, University of Salamanca, 37008 Salamanca, Spain
- Correspondence:
| | - Vicente Faus-Matoses
- Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 46010 Valencia, Spain;
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Iandolo A, Abdellatif D, Amato A, Calapaj M, Pisano M. A novel modified obturation technique using biosealers: An ex vivo study. J Conserv Dent 2021; 24:369-373. [PMID: 35282581 PMCID: PMC8896140 DOI: 10.4103/jcd.jcd_142_21] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 09/30/2021] [Accepted: 10/16/2021] [Indexed: 11/18/2022] Open
Abstract
Background: The root canal anatomy is a complex space, and using a single-cone obturation technique does not guarantee a complete filling. Aim: This research aimed to evaluate the actual temperature of the biosealer during the obturation phase inside the root canal using a new hot technique. In addition, this study evaluated the penetration depth of the biosealer inside dentinal tubules. Setting and Design: The current study was concluded on two ex vivo experiments; the former tested the temperature evaluation. The latter examined the penetration depth of the biosealer. Materials and Methods: In this study, 42 sec mandibular premolars were used, and two experiments were carried out. In the first experiment, two premolars were utilized, and two thermocouples of K-type for each tooth were used. During the second experiment, the penetration depth of the biosealer was examined, 40 teeth were selected. Root canals were prepared then divided into two obturation groups: A, gutta-percha, and biosealer with single-cone technique and B, gutta-percha, and biosealer with a newly proposed obturation method. Confocal laser scanning was used to assess the penetration of the sealer. Statistical Analysis Used: In the first experiment, the Bonferroni method was performed to compare the temperature data. The tests used in the second experiment were Shapiro–Wilk's test, Kruskal–Wallis, and Mann–Whitney tests. Results: The first experiment results showed that the heat does not reach the apical third using the new obturation method. In the second experiment, the results showed in Group B significantly higher biosealer penetration into the dentinal tubules as compared to Group A (P < 0.05). Conclusions: The highest level of penetration of the biosealer in the dentinal tubules was observed in the group of the new obturation method, and the last apical 3 mm remained at 37° using this novel hot modified technique providing no risk of chemical alteration of the biosealer.
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