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Rego LF, Bronzato JD, Souza APC, de-Jesus-Soares A, Frozoni M. In Vitro Evaluation of the Dynamic Cyclic Fatigue Resistance of a New TruNatomy Glider File after Different Cycles of Use. J Endod 2024; 50:619-626. [PMID: 38311114 DOI: 10.1016/j.joen.2024.01.021] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 01/23/2024] [Accepted: 01/25/2024] [Indexed: 02/06/2024]
Abstract
INTRODUCTION Determination of the glide path is recommended before using rotary instruments. This study aimed to evaluate the dynamic cyclic fatigue resistance of new and used glider rotary instruments in up to 6 root canals. METHODS Seventy-two TruNatomy Glider files were used for the preparation of root canals of extracted lower molars, which were then submitted to the dynamic cyclic fatigue test carried out in a curved metallic artificial canal. The instruments were divided into 4 groups (n = 18): Control group, new instruments without any use in the root canal; Group 2U, instruments used in 2 mesial canals; Group 4U, instruments used in 4 mesial canals; Group 6U, instruments used in 6 mesial canals. The time to failure (TF) of the instrument was recorded, and the number of cycles to failure (NCF) was calculated. The data were submitted to 1-way analysis of variance and to the Games-Howell test for multiple comparisons, adopting a significance level of 5%. RESULTS TF and NCF were significantly affected by the number of file uses. The Games-Howell test revealed that TF and NCF were significantly greater in the control group than in Group 4U. In Group 2U, TF and NCF were intermediate and not significantly different from the control group. Group 6U had significantly lower TF and NCF than all other groups. CONCLUSION The TruNatomy Glider can be used as a glide path for up to 2 mesial canals of mandibular molars, whereas its use on 4 or 6 root canals is not suggested.
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Affiliation(s)
- Lorena Ferreira Rego
- Department of Endodontics, São Leopoldo Mandic School of Dentistry, Campinas, São Paulo, Brazil
| | - Juliana Delatorre Bronzato
- Division of Endodontics, Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil.
| | | | - Adriana de-Jesus-Soares
- Division of Endodontics, Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil
| | - Marcos Frozoni
- Department of Endodontics, São Leopoldo Mandic School of Dentistry, Campinas, São Paulo, Brazil
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Schimdt TF, da Fonseca Roberti Garcia L, da Silveira Teixeira C, Alcalde MP, Hungaro Duarte MA, Bortoluzzi EA. How Does Intentional Apical Foraminal Enlargement Affect the Foramen and Root Canal Morphology? J Endod 2024; 50:651-658. [PMID: 38387796 DOI: 10.1016/j.joen.2024.02.013] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/11/2024] [Accepted: 02/12/2024] [Indexed: 02/24/2024]
Abstract
INTRODUCTION This study assessed the effect of intentional foraminal enlargement on the foramen and the apical root canal morphology. METHOD Sixty mesial roots of mandibular molars were scanned by micro-computed tomography. Their apical foramina were photographed with a stereomicroscope before and after preparation. Three groups were formed (n = 20) according to the working length (WL). G-1: foramen - 1 mm; G0: foramen; and G+1: foramen + 1 mm. Each group originated 2 subgroups (n = 10): G-1: Buchanan's patency (size 10 K-type file) and foraminal debridement (sizes 20, 25 and 30 K-type files); G0 and G+1: rotary foraminal enlargement (ProDesign S size 25/.08) or reciprocating foraminal enlargement (R25). The area, perimeter, transportation, and noninstrumented walls of the foramen were evaluated. The root canal transportation and the centering index of preparation at 1, 3 and 5 mm from the foramen were also assessed. Data were compared statistically (α = 5%). RESULTS The instruments used at the foramen and 1 mm beyond promoted foraminal enlargement and transportation. Regarding NIW, there was no difference between mechanized foraminal enlargements performed at the foramen or 1 mm beyond, similar to the manual foraminal debridement group (P > .05). There was no difference in transportation and centralization at 1-, 3-, and 5-mm apical levels, regardless of the instrumentation systems. CONCLUSION Mechanical preparation at the foramen, or 1 mm beyond, resulted in foraminal enlargement, transportation and were not able to touch all root canal walls that delimit the foramen.
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Affiliation(s)
- Tamer Ferreira Schimdt
- Endodontics Division, Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Endodontics Division, Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Cleonice da Silveira Teixeira
- Endodontics Division, Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Murilo Priori Alcalde
- Department of Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Marco Antonio Hungaro Duarte
- Department of Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Eduardo Antunes Bortoluzzi
- Endodontics Division, Department of Diagnosis & Oral Health, University of Louisville, Louisville, Kentucky.
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Caviedes-Bucheli J, Muñoz-Alvear HD, Lopez-Moncayo LF, Kacharaju KR, Velasquez-Rivera AC, Carlosama-Recalde LA, Pazmiño JC, Gomez-Sosa JF, Diaz-Barrera LE, Munoz HR. Substance P/calcitonin gene-related peptide and their receptors expression in human periodontal ligament after root canal preparation with five different systems. Int Endod J 2024; 57:576-585. [PMID: 38294105 DOI: 10.1111/iej.14035] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 01/09/2024] [Accepted: 01/16/2024] [Indexed: 02/01/2024]
Abstract
AIM The purpose of this study was to quantify the effect of five different root canal preparation instruments on Substance P (SP), Calcitonin gene-related peptide (CGRP) and their receptors expression in healthy human periodontal ligament. METHODOLOGY STROBE guidelines were used to design a study using 60 periodontal ligament samples obtained from healthy lower premolars where extraction was indicated for orthodontic reasons. Prior to extraction 40 of these premolars were equally divided into four groups and root canals were prepared using different systems: Mtwo, Reciproc Blue, HyFlex EDM and Plex-V. Ten premolars were prepared with hand files and served as a positive control group. The remaining 10 premolars where extracted without treatment and served as a negative control group. All periodontal ligament samples were processed to measure the expression of SP, CGRP and their receptors by radioimmunoassay. Kruskal-Wallis and Duncan tests were performed to determine statistically significant differences between the groups for each variable. RESULTS Greater expression of all the peptides measured were found in the hand-file preparation group, followed by the Reciproc Blue, Mtwo, HyFlex EDM and Plex-V groups. The lower SP, CGRP and their receptors values were for the intact teeth control group. Kruskal-Wallis test showed statistically significant differences amongst groups (p < .001). Dunn post-hoc tests showed statistically significant differences in SP, CGRP and their receptors expression between the intact teeth and the hand-file and Reciproc Blue groups. Hand-file group showed significant differences with the other groups, except with Reciproc Blue, where no differences were observed in any of the peptides measured. Finally, no differences were observed between Plex-V and HyFlex in any of the peptides measured. CONCLUSIONS Root canal preparation with hand files and Reciproc Blue generates the highest expression of SP, CGRP, NK1 and CGRP1R in human periodontal ligament, whilst Plex-V and HyFlex maintain the basal expression of neuropeptides and their receptors. Mtwo showed intermediate results between Reciproc Blue and HyFlex.
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Affiliation(s)
- Javier Caviedes-Bucheli
- Centro de Investigaciones Odontologicas, School of Dentistry, Pontificia Universidad Javeriana, Bogota, Colombia
| | - Hernan Dario Muñoz-Alvear
- Postgraduate Endodontics Department, School of Dentistry, Universidad Cooperativa de Colombia, Pasto, Colombia
| | - Luis Fernando Lopez-Moncayo
- Postgraduate Endodontics Department, School of Dentistry, Universidad Cooperativa de Colombia, Pasto, Colombia
| | | | | | | | - Juan Camilo Pazmiño
- Postgraduate Endodontics Department, School of Dentistry, Universidad Cooperativa de Colombia, Pasto, Colombia
| | | | | | - Hugo Roberto Munoz
- Endodontics Department, School of Dentistry, Universidad de San Carlos de Guatemala, Guatemala City, Guatemala
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Xiqian L, Ying Z, Mian M. The effect of apical patency on postoperative pain following endodontic therapy: A systematic review and meta-analysis. Eur J Oral Sci 2024:e12986. [PMID: 38632110 DOI: 10.1111/eos.12986] [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: 07/19/2023] [Accepted: 03/26/2024] [Indexed: 04/19/2024]
Abstract
This systematic review and meta-analysis aimed to determine whether apical patency increases postoperative pain after endodontic therapy. This study explored the degree and incidence of postoperative pain during root canal therapy, as well as the number of required analgesic doses. We searched PubMed, Scopus, Embase, Web of Science, Cochrane Library, and gray literature from the date of database inception until May 2023. RevMan 5.4 software was used for data analysis. Twelve studies were considered eligible for meta-analysis. The mean pain scores on days 1 (mean difference [MD] = -1.69) and 2 (MD = -0.85) differed significantly between the apical patency and non-patency groups. The odds for pain after 24 h were significantly lower (OR 0.59) in the apical patency group than in the non-patency group. Furthermore, the mean number of required analgesic doses was not significantly different between the two groups. In conclusion, apical patency significantly alleviated postoperative pain (low-quality evidence) and reduced the incidence of pain (moderate evidence). However, high-quality randomized controlled trials are required to validate these findings.
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Affiliation(s)
- Liu Xiqian
- Department of Stomatology, Changzhi Medical College Affiliated Heping Hospital, Changzhi City, Shanxi Province, China
| | - Zhai Ying
- Department of Stomatology, Yangquan Coal Industry Group General Hospital, Yangquan City, Shanxi Province, China
| | - Mao Mian
- Department of Pharmacy, Sichuan Cancer Hospital and Institute, Chengdu, China
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Frankenberger R, Becker S, Beck-Broichsitter B, Albrecht-Hass S, Behrens CJ, Roggendorf MJ, Koch A. 40-Year Outcome of Old-School, Non-Surgical Endodontic Treatment: Practice-Based Retrospective Evaluation. Dent J (Basel) 2024; 12:90. [PMID: 38668002 PMCID: PMC11049336 DOI: 10.3390/dj12040090] [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: 12/25/2023] [Revised: 02/12/2024] [Accepted: 03/28/2024] [Indexed: 04/28/2024] Open
Abstract
(1) Background: Non-surgical endodontic treatment has been shown to be clinically successful; however, clinical long-term data are scarce. This practice-based retrospective clinical investigation evaluated endodontic outcomes over 40 years and identified relevant clinical co-factors. (2) Methods: Two experienced dental practitioners in two different private dental practices treated 174 patients with 245 teeth from 1969 to 1993. After root canal obturation, either a new direct restoration (amalgam, resin composite, or glass-ionomer cement) or the re-cementation of a pre-existing prosthetic restoration or renewal of prosthetic restoration followed. Metal posts (operator A) or metal screws (operator B) were inserted when coronal substance loss was significant. The primary outcome (i.e., tooth survival) was achieved when the endodontically treated tooth was, in situ, painless and had full function at the end of the observation period. A secondary outcome, the impact of different prognostic factors on survival rate, was evaluated. (3) Results: The overall mean survival was 56.1% of all treated teeth after 40 years of clinical service, resulting in an annual failure rate of 1.1%. Most investigated clinical co-factors (jaw, tooth position, intracanal dressings, post/screw placement, and gender) showed no significant influence on survival. (4) Conclusions: Even with materials and techniques from the 1970s and 1980s, successful root canal treatment was achievable. Except for post-endodontic restorations, most of the evaluated factors had no significant influence on the clinical long-term survival of root canal-treated teeth.
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Affiliation(s)
- Roland Frankenberger
- Department of Operative Dentistry, Endodontics, and Pediatric Dentistry, Medical Center for Dentistry, University Medical Center Giessen and Marburg, 35392 Marburg, Germany; (M.J.R.); (A.K.)
| | - Stephan Becker
- Prof. Becker & Kollegen, Kehdenstrasse 2-10, 47803 Kiel, Germany; (S.B.); (C.J.B.)
| | - Benedicta Beck-Broichsitter
- Clinic for Oral and Maxillofacial Surgery, Stuttgart City Clinic, Kriegsbergerstr. 60, 70174 Stuttgart, Germany;
| | | | - Charlotte J. Behrens
- Prof. Becker & Kollegen, Kehdenstrasse 2-10, 47803 Kiel, Germany; (S.B.); (C.J.B.)
| | - Matthias J. Roggendorf
- Department of Operative Dentistry, Endodontics, and Pediatric Dentistry, Medical Center for Dentistry, University Medical Center Giessen and Marburg, 35392 Marburg, Germany; (M.J.R.); (A.K.)
| | - Andreas Koch
- Department of Operative Dentistry, Endodontics, and Pediatric Dentistry, Medical Center for Dentistry, University Medical Center Giessen and Marburg, 35392 Marburg, Germany; (M.J.R.); (A.K.)
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Alzahrani AH, Ebrahim MI, Felemban MF, Alqarni AA, Algahtani FS, Shawli HT, Humayyani NA, Meshni AA, Al Moaleem MM. Nanoparticle Augmentation of Adhesive Systems: Impact on Tensile Strength in Fiberglass Post Placement within Root Dentin. Med Sci Monit 2024; 30:e943502. [PMID: 38515376 PMCID: PMC10941630 DOI: 10.12659/msm.943502] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 01/12/2024] [Indexed: 03/23/2024] Open
Abstract
BACKGROUND Modification of the glass fiber post (GFP) with titanium dioxide or silver particles can improve the durability and reliability of dental treatments for ensuring long-term success. This research assessed the tensile bond strength (TBS) of an adhesive system used for cementing GFPs into root dentin following the incorporation of nanoparticles of titanium dioxide (NTiO2) and silver (NAg). MATERIAL AND METHODS Sixty human maxillary canines were prepared to create a 10-mm intra-radicular space for post placement from the cementoenamel junction. The specimens were randomly allocated into 2 groups (a non-thermocycling group and a thermocycling group). Each group was divided into 3 subgroups (10 samples each) according to the adhesive system used (adhesive system devoid of any addition, adhesive system including 1% NAg, and adhesive system infused with 1% NTiO2). TBS tests were conducted and recorded in MPa using a Universal Testing Machine, with an axial load applied at a rate of 0.5 mm/min until failure. The TBS for both groups (non-thermocycling and thermocycling) was measured in megapascals (MPa), and the failure type was recorded. The data were statistically analyzed using one-way analysis of variance (ANOVA) and Tukey's test with P.
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Affiliation(s)
| | - Mohamed Ismail Ebrahim
- Faculty of Dental Medicine, Al Azher University (Boys), Cairo, Egypt
- Department of Restorative Dentistry, Faculty of Dentistry, Taif University, Taif, Saudi Arabia
| | - Mohammed Fareed Felemban
- Department of Maxillofacial Surgery and Diagnostic Science, Faculty of Dentistry, Taif University, Taif, Saudi Arabia
| | - Ali Abdullah Alqarni
- Department of Oral & Maxillofacial Surgery and Diagnostic Sciences, Faculty of Dentistry, Taif University, Taif, Saudi Arabia
| | - Fahad Saeed Algahtani
- Department of Restorative Dentistry, Faculty of Dentistry, Taif University, Taif, Saudi Arabia
| | - Hassan Talat Shawli
- Department of Restorative Dentistry, Faculty of Dentistry, Taif University, Taif, Saudi Arabia
| | - Nouf Al Humayyani
- Department of Prosthodontics, Faculty of Dentistry, Taif University, Taif, Saudi Arabia
| | - Abdullah A. Meshni
- Department of Prosthetic Dental Science, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - Mohammed M. Al Moaleem
- Department of Prosthetic Dental Science, College of Dentistry, Jazan University, Jazan, Saudi Arabia
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Araújo LPD, Gobbo LB, Silva TAD, Rosa WLDOD, Almeida JFAD, Gomes BPFA, Ferraz CCR. Photodynamic therapy in the root canal treatment of primary teeth: A systematic review of clinical trials. Int J Paediatr Dent 2024; 34:114-124. [PMID: 37195228 DOI: 10.1111/ipd.13088] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 03/04/2023] [Accepted: 05/10/2023] [Indexed: 05/18/2023]
Abstract
BACKGROUND Dental caries is the most common oral disease worldwide, and it is estimated to affect 2.3 billion people, with at least 530 million of them being schoolchildren with decayed primary teeth. This condition can rapidly evolve into irreversible pulp inflammation and pulp necrosis and thus requiring endodontic intervention. Photodynamic therapy (PDT) is a supplementary method to conventional pulpectomy and is used to improve the protocol used for disinfection. AIM The main objective of this study was to evaluate through a systematic review the efficacy of supplementary PDT on the pulpectomy of primary teeth. This review was registered a priori on the PROSPERO database (CRD42022310581). DESIGN Two independent and blinded reviewers carried out a comprehensive search in five databases: PubMed, Cochrane, Scopus, Embase, and Web of Science. Eligible studies were randomized and nonrandomized clinical trials that evaluated in vivo microbiological load or clinical outcomes after using supplementary PDT in infected primary teeth. RESULTS After the selection process, four studies met the inclusion criteria and were included in this study. Data regarding the sample characteristics and PDT protocols were retrieved. All included trials used phenothiazinium salts as photosensitizer agents. Only one study observed a significant difference in the in vivo microbiological load reduction outcome when performing PDT on primary teeth. The remaining studies all discussed the possible benefits of this intervention; however, none observed a significant difference in this outcome. CONCLUSION In this systematic review, moderate-to-low certainty of the available evidence was observed, and thus, no significant conclusions can be drawn from the findings.
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Affiliation(s)
- Lucas Peixoto de Araújo
- Department of Restorative Dentistry, Division of Endodontics, Piracicaba Dental School, State University of Campinas (UNICAMP), Piracicaba, Brazil
- School of Dentistry, Catholic University of Pelotas (UCPel), Pelotas, Brazil
| | - Leandro Bueno Gobbo
- Department of Restorative Dentistry, Division of Endodontics, Piracicaba Dental School, State University of Campinas (UNICAMP), Piracicaba, Brazil
| | - Tamares Andrade da Silva
- Department of Restorative Dentistry, Division of Endodontics, Piracicaba Dental School, State University of Campinas (UNICAMP), Piracicaba, Brazil
| | | | - José Flávio Affonso de Almeida
- Department of Restorative Dentistry, Division of Endodontics, Piracicaba Dental School, State University of Campinas (UNICAMP), Piracicaba, Brazil
| | - Brenda P F A Gomes
- Department of Restorative Dentistry, Division of Endodontics, Piracicaba Dental School, State University of Campinas (UNICAMP), Piracicaba, Brazil
| | - Caio Cezar Randi Ferraz
- Department of Restorative Dentistry, Division of Endodontics, Piracicaba Dental School, State University of Campinas (UNICAMP), Piracicaba, Brazil
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Wang Z, Xue M. Formation of dentinal microcracks after root canal preparation with four kinds of mechanical nickel-titanium files. Hua Xi Kou Qiang Yi Xue Za Zhi 2024; 42:75-81. [PMID: 38475954 DOI: 10.7518/hxkq.2023.2023257] [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] [Subscribe] [Scholar Register] [Indexed: 03/14/2024]
Abstract
OBJECTIVES This study aimed to compare the differences among four kinds of mechanical Ni-Ti files including T-Flex, Reciproc Blue (RB), ProTaper Gold (PTG), and ProTaper Universal (PTU) in dentinal microcrack generation after root canal preparation in vitro by using micro-computed tomography (micro-CT) analysis. METHODS A total of 32 freshly extracted double-root-canal premolars with an angle not exceeding 10° were selected and established as root canal preparation models in vitro. Then, the specimens were randomly assigned to four experimental groups (n=8) according to the different Ni-Ti systems used for root canal preparation: group T-Flex, group RB, group PTG, and group PTU. The voxel size of the micro-CT was set at 17.18 μm. Pre- and post-operative cross-sectional images of roots (n=56 940) were scanned and analyzed to identify the presence of dentinal microcracks. The results of each group were expressed by the quantity and percentage of sectional images with microcracks. McNemar test was used to determine whether a significant difference existed in the existence of dentinal microcracks before and after instrumentation. The level of significance was set at P<0.05. RESULTS Overall, 11.04% of the images presented dentinal defects (n=6 288). Dentinal microcracks were observed in 9.82%, 10.79%, 12.27%, and 11.25% of the post-instrumentation images from groups T-Flex, RB, PTG, and PTU, respectively. However, all these dentinal microcracks were already present in the corresponding pre-operative images. No new microcrack of premolars were generated after the root canal preparation utilizing the aforementioned systems. CONCLUSIONS Denti-nal microcracks already existed in advance in extracted teeth before root canal preparation. Root canal preparation using the T-Flex, RB, PTG, and PTU systems did not induce the formation of new dentinal microcracks on the straight root canals of premolars.
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Affiliation(s)
- Zi Wang
- Dept. of Conservative Dentistry and Endodontics, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang 110002, China
| | - Ming Xue
- Dept. of Conservative Dentistry and Endodontics, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang 110002, China
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Karia HM, Vaghela I, Dhanesha A, Mrugnayani, Solanki P, Rathwa R. Microscopic Evaluation of Dentinal Defects after Root Canal Preparation with Different Hand and Nickel-Titanium Files; An In Vitro Study. J Pharm Bioallied Sci 2024; 16:S711-S713. [PMID: 38595627 PMCID: PMC11000995 DOI: 10.4103/jpbs.jpbs_960_23] [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: 09/28/2023] [Revised: 10/21/2023] [Accepted: 10/23/2023] [Indexed: 04/11/2024] Open
Abstract
Background Effective endodontic instrumentation aims to remove microorganisms, debris, and tissue from the root canal while maintaining dentinal integrity. This study compares dentinal defect incidence following canal preparation with different hand files, nickel-titanium rotary files, and reciprocating files. Materials and Methods Eighty single-rooted mandibular premolars with mature apices were collected. Four groups (n = 20) were established based on canal patency establishment, canal preparation technique, irrigation solution, and final irrigation. After root sectioning at 3 mm, 6 mm, and 9 mm from the apex, slices were examined under a stereomicroscope, and dentinal defects were recorded. A second examiner reviewed the images. Results The results showed significant difference of P = 0.031 among Hand files vs. Rotary ProTaper files: In Hand files vs. Reciprocating WaveOne files significant difference was P = 0.048, and for rotary ProTaper files vs. Reciprocating WaveOne files: No significant difference (P = 0.643). Dentinal defect counts were similar at 3 mm, 6 mm, and 9 mm. Statistically significant variation was observed between hand files and rotary files, as well as hand files and reciprocating files. Conclusion Both rotary and reciprocating files showed a statistically significant increase in dentinal defect incidence compared to hand files. However, clinical implications should be considered cautiously. Instrumentation technique selection should be based on clinical context, operator experience, and patient factors. Further clinical studies are needed for validation.
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Affiliation(s)
- Hiral Milap Karia
- Department of Conservative and Endodontics, R.R. Dental College, Udaipur, Rajasthan, India
| | - Ishita Vaghela
- Department of Prosthodontics and Crown and Bridge, GDCH, Jamnagar, Gujarat, India
| | - Archan Dhanesha
- Department of Conservative and Endodontics, AIIMS, Rajkot, Gujarat, India
| | - Mrugnayani
- Department of Prosthodontics and Crown and Bridge, K.M. Shah Dental College and Hospital, Vadodara, Gujarat, India
| | - Pranav Solanki
- Department of Prosthodontics and Crown and Bridge, Goenka Research Institute of Dental Science, Piplaj, Gujarat, India
| | - Rangesing Rathwa
- Department of Prosthodontics and Crown and Bridge, GDCH, Jamnagar, Gujarat, India
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Vinodhini V, Baig MM, Attur K, Singh S, Sharma S, Padda P. Compare the Centering Ability, Canal Transportation and Root Canal Area Increase of XP Endoshaper, Hyflex CM and K3 XF File System by using Cone Beam: An Original Research. J Pharm Bioallied Sci 2024; 16:S380-S382. [PMID: 38595630 PMCID: PMC11000946 DOI: 10.4103/jpbs.jpbs_603_23] [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: 08/13/2023] [Revised: 08/16/2023] [Accepted: 08/22/2023] [Indexed: 04/11/2024] Open
Abstract
Objective Using cone beam computed tomography (CBCT), this study compared three rotary file systems-XP Endoshaper, Hyflex CM, and K3 XF-for centering, canal transportation, and root canal area growth. Materials and Methods The rotating file system randomly separated 60 removed human mandibular molars into three groups (n = 20). Manufacturer-recommended root canal instrumentation was done. Specialized software examined pre- and post-instrumentation CBCT scans. Centering ability was measured by canal transportation and root canal area expansion at different levels from the apex. Results The Hyflex CM file system had the best centering and the least canal transit at all levels (P < 0.05). XP Endoshaper increased the root canal area the most (P < 0.05). The K3 XF file system had average centering and canal transfer results. Conclusion The Hyflex CM system centered well, whereas the XP Endoshaper system increased the root canal area the most. The clinical context and therapeutic goals should determine the rotating file system.
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Affiliation(s)
- V. Vinodhini
- Department of Conservative Dentistry and Endodontics, Mahatma Gandhi Post Graduate Institute of Dental Sciences, Puducherry, India
| | - Mirza M. Baig
- Department of Conservative Dentistry and Endodontics, Sri Balaji Dental College, Yenkapally, Moinabad, Telangana, India
| | - Kailash Attur
- Department of Conservative Dentistry and Endodontics, Narsinhbhai Patel Dental College and Hospital, Sankalchand Patel University, Visnagar, Gujarat, India
| | - Shalini Singh
- Department of Conservative Dentistry and Endodontics, Narsinhbhai Patel Dental College and Hospital, Sankalchand Patel University, Visnagar, Gujarat, India
| | - Sehaj Sharma
- Sri Guru Ram Dass Institute of Dental Science and Research, Amritsar, Punjab, India
| | - Puneet Padda
- Sri Guru Ram Dass Institute of Dental Science and Research, Amritsar, Punjab, India
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Monteiro TM, Cortes-Cid VO, Marceliano-Alves MFV, Campello AF, Bastos LF, Lopes RT, Siqueira JF, Alves FRF. Intracanal removal and apical extrusion of filling material after retreatment using rotary or reciprocating instruments: A new approach using human cadavers. Int Endod J 2024; 57:100-107. [PMID: 37886883 DOI: 10.1111/iej.13990] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 10/10/2023] [Accepted: 10/12/2023] [Indexed: 10/28/2023]
Abstract
AIM This study compared intracanal removal of filling as well as the frequency and volume of extruded material after retreatment with either HyFlex or Reciproc instruments in mandibular teeth from cadavers. METHODOLOGY The root canals of 14 pairs of contralateral single-rooted teeth in mandibles of cadavers were instrumented with Reciproc R40 and filled using lateral compaction. The mandibles were scanned in a micro-computed tomographic (micro-CT) device before and after retreatment procedures. The contralateral teeth were assigned to two groups (n = 14) according to the retreatment protocol using either HyFlex or Reciproc instrument systems. In the HyFlex group, the HyFlex Remover instrument was worked 3 mm short of the working length (WL), followed by HyFlex CM 40.04 and 50.04 at the WL. In the Reciproc group, the R50 instrument was worked up at the coronal two thirds, followed by two more cycles until the WL was reached. Pre- and post-operative micro-CT images were analysed for extrusion and intracanal removal of filling material. RESULTS After retreatment, extrusion of filling material occurred in 11 (78%) and 14 (100%) teeth from HyFlex and Reciproc groups respectively (p > .05). A similar volume of extruded material was observed after retreatment with both systems (p > .05). A significant decrease in the intracanal filling volume was verified after retreatment with both tested systems (p < .05). However, residual filling material was found in all root canals, regardless of the system. The amount of filling material removed (HyFlex = 80.8%; Reciproc = 65.9%) and the operation time was similar between systems (p > .05). CONCLUSIONS A high frequency of filling material extrusion was observed after retreatment with the two systems in a cadaver model, with no significant difference between them. Both protocols obtained similar efficacy in filling material removal procedures, although none completely cleaned the canals.
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Affiliation(s)
- Thamyres M Monteiro
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Duque de Caxias, Brazil
| | - Victor O Cortes-Cid
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Duque de Caxias, Brazil
| | | | - Andrea F Campello
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Duque de Caxias, Brazil
- Department of Endodontics, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, Brazil
| | - Luan F Bastos
- Department of Nuclear Energy, Rio de Janeiro Federal University, Rio de Janeiro, Brazil
| | - Ricardo T Lopes
- Department of Nuclear Energy, Rio de Janeiro Federal University, Rio de Janeiro, Brazil
| | - José F Siqueira
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Duque de Caxias, Brazil
- Department of Endodontics, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, Brazil
| | - Flávio R F Alves
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Duque de Caxias, Brazil
- Department of Endodontics, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, Brazil
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Marceliano-Alves MFV, Ronquete V, Coutinho TMC, Boukpessi T, Salvioni ALF, Goulart PASR, Limoeiro AGG, Alves FRF, Amoroso-Silva PA. Unprepared areas and centralization of oval canals prepared with WaveOne Gold or XP-endo Shaper: microcomputed tomographic analyses. Acta Odontol Latinoam 2023; 36:177-182. [PMID: 38345280 PMCID: PMC10867851 DOI: 10.54589/aol.36/3/177] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 11/01/2023] [Indexed: 02/15/2024]
Abstract
Current instrumentation systems cannot fully prepare oval root canal systems. This may cause accumulation of hard tissue debris and fail to eliminate bacteria from areas inaccessible to instrumentation, which could perpetuate periapical inflammation and jeopardize the success of endodontic treatment. Aim To evaluate the performance of two endodontic systems in oval canals by investigating the changes in volume, unprepared areas, and centering ability of XP-endo Shaper (XPS) and WaveOne Gold (WOG) in oval canals using microcomputed tomography (micro-CT). Materials and Method Thirty mandibular canines were scanned before and after preparation with WOG (25/.07 and 35/.06) or XPS (30/.01) to evaluate the volume, surface area, and canal centralization at 4 mm and 10 mm from the apical foramen. Results Volume and surface area increased significantly after preparation with both systems (p<0.05). However, no significant difference was observed in the unprepared areas, regarding either the entire canal (26.21% for WOG and 30.10% for XPS), or the apical segment (18.82% for WOG and 14.63% for XPS) (p >0.05). Conclusions Both systems maintained canal centralization, with no difference between them. XPS and WOG had similar shaping abilities in the mandibular canine, but left almost one third of the unprepared areas.
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Affiliation(s)
| | - Vivían Ronquete
- Universidade Iguaçu, Departmento de Endodontia, Nova Iguaçu, Rio de Janeiro, Brazil
| | - Thais MC Coutinho
- Universidade Iguaçu, Departmento de Endodontia, Nova Iguaçu, Rio de Janeiro, Brazil
| | - Tchilalo Boukpessi
- Université Paris Cité, Laboratory of Orofacial Pathologies, Imaging and Biotherapies, Laboratoire d'Excellence INFLAMEX, URP 2496, Montrouge, France
| | - Amanda LF Salvioni
- Universidade Iguaçu, Departmento de Endodontia, Nova Iguaçu, Rio de Janeiro, Brazil
| | - Paula ASR Goulart
- Universidade Iguaçu, Departmento de Endodontia, Nova Iguaçu, Rio de Janeiro, Brazil
| | | | - Flavio RF Alves
- Universidade Grande Rio, Programa de pós-graduação em Odontologia, Duque de Caxias, Brazil
| | - Pablo A Amoroso-Silva
- Universidade Grande Rio, Programa de pós-graduação em Odontologia, Duque de Caxias, Brazil
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13
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Schulz-Weidner N, Wang J, Steinbart J, Windfelder AG, Krombach GA, Krämer N, Schlenz MA, Scherberich J. Evaluation of Mechanical Versus Manual Root Canal Preparation in Primary Molars-A Comparative In Vitro Study. J Clin Med 2023; 12:7718. [PMID: 38137787 PMCID: PMC10743663 DOI: 10.3390/jcm12247718] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/04/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023] Open
Abstract
The endodontic treatment of primary teeth is to maintain the function of the tooth free of symptoms until its physiological exfoliation. A critical factor for success is how quickly and effectively the root canal preparation can be performed. Therefore, the aim of this comparative in vitro study was to analyze the efficiency of two mechanical root canal preparation systems FM (FlexMaster) and HF (HyFlex EDM) to manual KF (K-file) on extracted primary molars. A total of 45 teeth were divided into three groups (n = 15): KF (#15-35), FM (04#30) and HF (25/~ OneFile). Root canal preparation was performed, and the preparation time was measured. All root canals were non-destructively analyzed by micro-computed tomography in the cervical, middle and apical thirds before and after preparation with regard to the parameters of canal transport (in μm) and centering ratio (0-1). Statistical analysis was performed at a 5% significance level using non-parametric tests. HF caused the lowest canal transport in the apical third (p = 0.008). The centering ratio value of HF was significantly higher in the middle third of the root canals than in the other two groups (p < 0.01). The mean instrumentation time was significantly higher for KF (6.67 min) than for FM (4.69 min) and HF (4.03 min, p < 0.01). HF can be recommended for primary molar root canal treatment.
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Affiliation(s)
- Nelly Schulz-Weidner
- Department of Pediatric Dentistry, Dental Clinic, Justus Liebig University, 35392 Giessen, Germany; (N.S.-W.); (J.W.); (N.K.)
| | - Jiameng Wang
- Department of Pediatric Dentistry, Dental Clinic, Justus Liebig University, 35392 Giessen, Germany; (N.S.-W.); (J.W.); (N.K.)
| | - Jessica Steinbart
- Experimental Radiology, Department of Diagnostic and Interventional Radiology, University Hospital Giessen, Justus Liebig University Giessen, 35392 Giessen, Germany; (J.S.); (A.G.W.)
| | - Anton G. Windfelder
- Experimental Radiology, Department of Diagnostic and Interventional Radiology, University Hospital Giessen, Justus Liebig University Giessen, 35392 Giessen, Germany; (J.S.); (A.G.W.)
- Branch for Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, 35392 Giessen, Germany
| | - Gabriele A. Krombach
- Department of Diagnostic and Interventional Radiology, University Hospital Giessen, Justus Liebig University Giessen, Giessen 35392, Germany;
| | - Norbert Krämer
- Department of Pediatric Dentistry, Dental Clinic, Justus Liebig University, 35392 Giessen, Germany; (N.S.-W.); (J.W.); (N.K.)
| | - Maximiliane A. Schlenz
- Department of Prosthodontics, Dental Clinic, Justus Liebig University, 35392 Giessen, Germany;
| | - Jan Scherberich
- Experimental Radiology, Department of Diagnostic and Interventional Radiology, University Hospital Giessen, Justus Liebig University Giessen, 35392 Giessen, Germany; (J.S.); (A.G.W.)
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Zarean P, Göllner M, Zarean P, Neuhaus KW. 2D and 3D Erosion Landscape Analysis of Endodontic-Treated Teeth Using EDTA and HEDP as Chelating Agents: A High-Resolution Micro-Computed Tomographic Study. Dent J (Basel) 2023; 11:286. [PMID: 38132424 PMCID: PMC10742433 DOI: 10.3390/dj11120286] [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: 10/30/2023] [Revised: 11/28/2023] [Accepted: 12/07/2023] [Indexed: 12/23/2023] Open
Abstract
This study aimed to assess the amount of erosion during activated endodontic irrigation with either HEDP or EDTA via high-resolution micro-computed tomography. Two root canals of twenty premolars were prepared with ProTaper Next and irrigated with sodium hypochlorite. Palatal canals, which served as control groups, were sealed, while buccal canals were further irrigated with either EDTA (n = 10) or HEDP (n = 10), which served as test groups. Micro-CT was performed to measure erosion depth. For 2D and 3D measurements, non-parametric repeated ANOVA measurements and post hoc tests were performed. 2D analysis showed highly significant differences between the case groups at each position of the root (p ≤ 0.01). The cervical and apical positions showed significant differences in the EDTA group (p = 0.03). The 3D analysis also showed significant differences between both chelating agents (p < 0.01) and the case and control groups (p = 0.01). The mean erosion depths in the cervical, middle, and apical thirds of the EDTA group were 45.75, 41.79, and 32.25 µm, and for the HEDP group were 20.25, 16.40, and 15.96 µm, respectively. HEDP seems to have a significantly less erosive effect. Different irrigation protocols with harsher conditions, as might be the case during endodontic retreatment, could be assessed with micro-CT.
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Affiliation(s)
- Parichehr Zarean
- Department of General Pediatric and Adolescent Dentistry, University Center for Dental Medicine Basel UZB, University of Basel, Mattenstrasse 40, 4058 Basel, Switzerland; (P.Z.); (P.Z.)
| | - Michael Göllner
- F. Hoffmann-La Roche Ltd., Grenzacherstrasse 124, 4070 Basel, Switzerland;
| | - Paridokht Zarean
- Department of General Pediatric and Adolescent Dentistry, University Center for Dental Medicine Basel UZB, University of Basel, Mattenstrasse 40, 4058 Basel, Switzerland; (P.Z.); (P.Z.)
| | - Klaus W. Neuhaus
- Department of General Pediatric and Adolescent Dentistry, University Center for Dental Medicine Basel UZB, University of Basel, Mattenstrasse 40, 4058 Basel, Switzerland; (P.Z.); (P.Z.)
- Department of Restorative, Preventive and Pediatric Dentistry, School of Dental Medicine, University of Bern, Freiburgstrasse 7, 3010 Bern, Switzerland
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Özlek E, Gündüz H. The Effect of Using Different Kinematics Single File Systems with Coronal Preflaring Instruments on Postoperative Pain with Symptomatic Irreversible Pulpitis: A Randomized Clinical Trial. J Endod 2023; 49:1625-1633. [PMID: 37722449 DOI: 10.1016/j.joen.2023.09.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 09/08/2023] [Accepted: 09/11/2023] [Indexed: 09/20/2023]
Abstract
INTRODUCTION The aim of this study was to investigate the effect of using coronal preflaring file (One Flare; OF) with rotational (One Curve; OC) and reciprocal (WaveOne Gold; WOG) single file systems on postoperative pain in mandibular premolar teeth with symptomatic irreversible pulpitis. METHODS Eighty patients were included in this prospective, superiority, parallel, and randomized controlled clinical trial. The patients were randomly divided into four groups (n = 20) based on the use of coronal preflaring and the kinematics of the shaping instrument: WOG (without coronal preflaring), WOG with coronal preflaring (OF), OC (without coronal preflaring), and OC with coronal preflaring (OF). Patients recorded their postoperative pain intensity at 6, 24, 48, and 72 hours using a 10-cm visual analog scale. Friedman and Wilcoxon's tests were used for intragroup comparisons, and Kruskal-Wallis test was used for intergroup comparisons. The post hoc analysis was performed using Dunn's test. The Chi-square test was used to compare gender and tooth localization according to the groups, and Kruskal-Wallis test was used to compare age and preoperative pain (P < .05). RESULTS At 6 and 24 hours, WOG and OC with coronal preflaring groups showed statistically significantly lower pain scores than WOG and OC groups without coronal preflaring (P < .05). No significant difference was found between the groups in terms of analgesic medication intake. CONCLUSIONS The use of coronal preflaring with both rotational and reciprocal single file systems in root canal preparation resulted in less postoperative pain in mandibular premolar teeth diagnosed with symptomatic irreversible pulpitis.
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Affiliation(s)
- Esin Özlek
- Department of Endodontics, Faculty of Dentistry, Van Yüzüncü Yıl University, Van, Turkey.
| | - Hüseyin Gündüz
- Department of Endodontics, Faculty of Dentistry, Van Yüzüncü Yıl University, Van, Turkey
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16
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Barbosa AFA, de Lima CO, Antunes BR, Sassone LM, Versiani MA, da Silva EJNL. Effect of the progressive taper enlargement of buccal root canals of three-rooted maxillary molars: A stepwise micro-CT study. AUST ENDOD J 2023; 49:700-710. [PMID: 37489612 DOI: 10.1111/aej.12782] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 05/16/2023] [Accepted: 07/13/2023] [Indexed: 07/26/2023]
Abstract
This study evaluated unprepared canal areas, volume of dentine removal, and dentine thickness after the progressive enlargement of the buccal canals of 22 maxillary molars, with and without the MB2, using instruments with the same tip size (0.25 mm) but 4 different tapers (0.03, 0.05, 0.06 and 0.08 v). Micro-CT scans were performed after each instrument. Data were compared using a general linear mixed model post hoc comparisons with Kenward-Roger for Wald F tests (α = 5%). After each treatment step, it was observed an increase in the percentage volume of removed dentine and a decrease in the unprepared areas and dentine thickness at the pericervical region of all canals (p < 0.05). The percentage reduction of dentine thickness in MB2 canal was higher than in the mesiobuccal and distobuccal canals (p < 0.05). Knowledge of pre-operative dimensions and dentine thickness before enlargement of buccal canals of maxillary molars is an important factor to avoid excessive dentine removal.
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Affiliation(s)
- Ana Flávia Almeida Barbosa
- Departament of Endodontics, State University of Rio de Janeiro, Rio de Janeiro, Brazil
- Department of Endodontics, School of Dentistry, Grande Rio University (UNIGRANRIO), Rio de Janeiro, Brazil
| | - Carolina Oliveira de Lima
- Departament of Endodontics, State University of Rio de Janeiro, Rio de Janeiro, Brazil
- Department of Dentistry, Federal University of Juiz de Fora, Governador Valadares, Brazil
| | - Bernardo Rempto Antunes
- Department of Endodontics, School of Dentistry, Grande Rio University (UNIGRANRIO), Rio de Janeiro, Brazil
| | - Luciana Moura Sassone
- Departament of Endodontics, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Emmanuel João Nogueira Leal da Silva
- Departament of Endodontics, State University of Rio de Janeiro, Rio de Janeiro, Brazil
- Department of Endodontics, School of Dentistry, Grande Rio University (UNIGRANRIO), Rio de Janeiro, Brazil
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Dewes Cassal M, Cardoso Soares P, Dos Santos M. The Effect of Combined Ultrasonic Tip and Mechanized Instrumentation on the Reduction of the Percentage of Non-Instrumented Surfaces in Oval/Flat Root Canals: A Systematic Review and Meta-Analysis. Cureus 2023; 15:e50041. [PMID: 38186463 PMCID: PMC10768610 DOI: 10.7759/cureus.50041] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/06/2023] [Indexed: 01/09/2024] Open
Abstract
This systematic review and meta-analysis aimed to evaluate the effectiveness of the ultrasonic tip associated with mechanized instrumentation in reducing the percentage of non-instrumented surfaces of human teeth with oval or flattened root canals. The study followed the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guidelines. Pubmed/MEDLINE (Medical Literature Analysis and Retrieval System Online), Scopus, Embase, Web of Science, and Cochrane Library were searched for literature published till October 2022. Only in vitrostudies were included, which compared conventional mechanized endodontic treatment alone against conventional endodontic treatment in association with ultrasonic tips, evaluating the reduction in the percentage of non-instrumented walls (computed microtomography). Four studies were eligible for qualitative and quantitative analysis. The majority of the studies scored low for risk of bias. The meta-analysis comparing protocols demonstrated a reduced percentage of non-instrumented walls in groups using ultrasonic tips after the conventional mechanized technique (p<0.01) with a confidence interval of 1.04 (95%CI: 0.59, 1.50). The ultrasonic tip associated with mechanized instrumentation demonstrates a significant reduction in the percentage of non-instrumented surfaces in oval or flattened canals.
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Affiliation(s)
- Marcella Dewes Cassal
- Department of Restorative Dentistry, Faculty of Dentistry, University of São Paulo, São Paulo, BRA
| | - Pedro Cardoso Soares
- Department of Restorative Dentistry, Faculty of Dentistry, University of São Paulo, São Paulo, BRA
| | - Marcelo Dos Santos
- Department of Restorative Dentistry, Faculty of Dentistry, University of São Paulo, São Paulo, BRA
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18
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Priyadarshni P, Nagpal A, Arif A, Sharma A, Rahman M, Sinha S. Comparative Evaluation of Dentinal Crack After Root Canal Preparation Using TruNatomy, Neoendo Flex, and Neoendo Neohybrid Files: An In Vitro Study. Cureus 2023; 15:e49593. [PMID: 38161952 PMCID: PMC10754683 DOI: 10.7759/cureus.49593] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 11/28/2023] [Indexed: 01/03/2024] Open
Abstract
AIM The objective of the study was to assess and compare the dentinal microcracks produced by TruNatomy, Neoendo Flex, and Neoendo Neohybrid files during root canal preparation. MATERIAL AND METHODS In this in vitro investigation, four groups of 25 samples each were assembled from 100 mandibular premolar teeth. Using TruNatomy, Neoendo Flex, and Neoendo Neohybrid files, or leaving the teeth unprepared (control), the teeth underwent root canal preparation. Horizontal sections were taken at different distances from the apex to analyze dentinal cracks. A stereomicroscope was used to assess the existence or lack of cracks, and chi-square tests were performed on the data. RESULTS In the control group, there were no cracks. TruNatomy files created fewer cracks compared to Neoendo Flex and Neoendo Neohybrid files. CONCLUSIONS This in vitro investigation demonstrates that the root surface might acquire dentinal cracks as a result of nickel-titanium instruments. Compared to Neoendo Flex and Neoendo Neohybrid files, TruNatomy showed a decreased incidence of cracks. However, it is important to note that these conclusions are limited to the scope of this study.
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Affiliation(s)
- Priyanka Priyadarshni
- Department of Conservative Dentistry and Endodontics, Kanti Devi Dental College and Hospital, Mathura, IND
| | - Ajay Nagpal
- Department of Conservative Dentistry and Endodontics, Kanti Devi Dental College and Hospital, Mathura, IND
| | - Arina Arif
- Department of Conservative Dentistry and Endodontics, Kanti Devi Dental College and Hospital, Mathura, IND
| | - Abhishek Sharma
- Department of Conservative Dentistry and Endodontics, Kanti Devi Dental College and Hospital, Mathura, IND
| | - Mutiur Rahman
- Department of Conservative Dentistry and Endodontics, Kanti Devi Dental College and Hospital, Mathura, IND
| | - Shreyasi Sinha
- Department of Conservative Dentistry and Endodontics, Kanti Devi Dental College and Hospital, Mathura, IND
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19
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Estrela C, Bueno MR, Rossi-Fedele G, Decurcio DA, Guedes OA, Sousa-Neto MD, Estrela CRDA. Method to determine the root canal spatial geometry using an algorithm of the e-Vol DX CBCT software. Braz Dent J 2023; 34:40-49. [PMID: 38133091 PMCID: PMC10742355 DOI: 10.1590/0103-6440202305661] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Accepted: 11/22/2023] [Indexed: 12/23/2023] Open
Abstract
This study evaluated a method to determine the spatial geometry of root canal preparation (RCP) using navigation dynamics and a specific algorithm from a new CBCT software (e-Vol DX). CBCT scans of 168 root canals of mandibular molars were acquired before and after RCP, using nickel-titanium (NiTi) instruments (ProTaper Next, BioRace, Reciproc Blue, and WaveOne Gold). The spatial geometry of the root canals and the operative risk of disproportional wear of dentinal walls after RCP were evaluated using a new CBCT software. A 3-point scoring system was used after the measuring of cementum/dentin thickness before and after RCP in all root thirds. The root thirds were distributed into three parts of similar sizes, and the scores were categorized at three levels: 1. mild risk (1/3), 2. moderate risk (2/3), 3. severe risk (3/3). These levels were proposed according to the risk of creating disproportionate shapes, thin walls, or perforations. The data were analyzed statistically by Fischer's exact test (α = 5%). There were no significant differences in operative risk among the NiTi engine-driven systems, for the distal or mesial walls of all the root canal thirds (p>0.05). The spatial geometry method to assess operative risk allows clinical planning for a predictable enlargement of the root canal in all root thirds. Based on using a map-reading strategy on root canals in CBCT scans, NiTi engine-driven instruments did not present an increased operative risk during RCPs.
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Affiliation(s)
- Carlos Estrela
- Professor of Endodontics, School of Dentistry, Federal University of Goiás, Goiânia, Brazil
| | | | - Giampiero Rossi-Fedele
- Professor of Endodontics University of Adelaide, Dental School, Department of Endodontics, Adelaide, Australia
| | | | - Orlando Aguirre Guedes
- Professor of Oral Biology, School of Dentistry, Evangelical University of Goiás, GO, Brazil
| | - Manoel Damião Sousa-Neto
- Professor of Endodontics, School of Dentistry, University of São Paulo, Ribeirão Preto, SP, Brazil
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García-Castañeda Z, Gomes-Azevedo S, Flores-Treviño J, González GM, Brasil SC, Souza TM, Rôças IN, Siqueira JF. Shaping ability of BlueShaper, TruNatomy, DC Taper and HyFlex EDM in long oval canals: An ex vivo study. Int Endod J 2023; 56:1147-1154. [PMID: 37334880 DOI: 10.1111/iej.13945] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 06/08/2023] [Accepted: 06/09/2023] [Indexed: 06/21/2023]
Abstract
AIM This study evaluated and compared the shaping ability of four rotary instrument systems in long-oval root canals using microcomputed tomographic (micro-CT) evaluation. Currently, there is no data available on the canal shaping abilities of BlueShaper and DC Taper instruments. METHODOLOGY Sixty-four single-rooted mandibular premolars were matched based on similar root canal morphologic features as determined by (micro-CT) and randomly assigned to 1 of 4 experimental groups (n = 16) according to the instrument system used: BlueShaper, TruNatomy, DC Taper and HyFlex EDM One File. Changes in the root canal surface and volume, remaining dentine thickness, and number of prepared areas were assessed. RESULTS No significant differences were found amongst the four instrument systems for the parameters evaluated (p > .05). There was a significant reduction in the number of unprepared areas and the remaining dentine thickness after each increase in size of the instruments tested (p < .05). CONCLUSIONS The four instrument systems perform similarly in long oval root canals. Although none could prepare all canal walls, larger preparations incorporated significantly more surfaces in the final shape.
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Affiliation(s)
| | - Susana Gomes-Azevedo
- Postgraduate Program in Endodontics, Universidad Autonoma de Nuevo Leon, Monterrey, Mexico
| | - Jorge Flores-Treviño
- Postgraduate Program in Endodontics, Universidad Autonoma de Nuevo Leon, Monterrey, Mexico
| | | | - Sabrina C Brasil
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, Brazil
| | - Thaís M Souza
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, Brazil
| | - Isabela N Rôças
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, Brazil
| | - José F Siqueira
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, Brazil
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21
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Jose J, Teja KV, Silva EJNL, Janani K, Siddique R, Rossi-Fedele G. Centric versus eccentric engine-driven endodontic instrument design for microbial load reduction-A systematic review and meta-analysis of randomised clinical trials. AUST ENDOD J 2023; 49 Suppl 1:515-527. [PMID: 36514265 DOI: 10.1111/aej.12726] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 11/09/2022] [Accepted: 11/24/2022] [Indexed: 12/15/2022]
Abstract
This systematic review assessed the clinical influence of centric and eccentric engine-driven instrument design for reduction in microbial load in infected root canal system. The literature search was conducted in electronic databases (PubMed, Cochrane Library, Scopus, Lilacs and Google Scholar) and grey literature till June 2022. The search strategy followed the PRISMA 2020 guidelines. Qualitative and quantitative synthesis was conducted based on the guidelines of the Cochrane Handbook. The risk of bias was assessed using the revised Cochrane criteria and quality of evidence was conducted using the Grading of Recommendation Assessment, Development and Evaluation tool. Out of 28 papers, only five papers met the inclusion criteria of this review. Studies showed reduction in microbial load after instrumentation using centric or eccentric instruments with no statistically significant difference in the meta-analysis. In conclusion, there is low-grade evidence suggesting that microbial reduction is similar using centric and eccentric instruments.
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Affiliation(s)
| | - Kavalipurapu Venkata Teja
- Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
| | - Emmanuel João Nogueira Leal Silva
- Department of Endodontics, School of Dentistry, Grande Rio University (UNIGRANRIO), Duque de Caxias, Brazil
- Department of Endodontics, School of Dentistry, Rio de Janeiro State University (UERJ), Rio de Janeiro, Brazil
| | - Krishnamachari Janani
- Department of Conservative Dentistry and Endodontics, SRM Dental College, Chennai, India
| | - Riluwan Siddique
- Department of Conservative Dentistry and Endodontics, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
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22
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Wang Y, Lu Y, Gu Y, Cai Y, Zhang C, Li J. Finding appropriate nickel-titanium instruments for lingual canals in mandibular first premolars with two canals: A micro-CT study. AUST ENDOD J 2023; 49 Suppl 1:89-98. [PMID: 36251403 DOI: 10.1111/aej.12698] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 09/15/2022] [Accepted: 09/19/2022] [Indexed: 11/30/2022]
Abstract
This study aimed to find appropriate nickel-titanium instruments for lingual canals in mandibular first premolars with two canals. Forty-two extracted mandibular first premolars with lingual canals (Vertucci type V) verified by micro-CT scanning were selected. The teeth were randomly divided into three groups, and their lingual canals were instrumented by M3, HyFlex CM and XP-endo Shaper, respectively. After instrumentation, the canal morphology was scanned again by micro-CT. The canal morphologies of pre- and post-instrumentation were reconstructed and aligned. Morphological changes of the lingual canals were evaluated. No instrument breakages occurred during the procedure of root canal instrumentation. HyFlex CM and XP-endo Shaper performed better than M3 files in preparation of lingual canals (Vertucci type V) of mandibular first premolars in terms of apical transportation and unprepared surface area.
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Affiliation(s)
- Yunqin Wang
- Jiangsu Province Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, China
- Department of VIP Clinic, Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - Yaqian Lu
- Jiangsu Province Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, China
- Department of VIP Clinic, Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - Yongchun Gu
- Department of Dentistry and Central Laboratory, Ninth People's Hospital of Suzhou, Suzhou, China
| | - Yixin Cai
- Jiangsu Province Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, China
- Department of VIP Clinic, Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - Chengfei Zhang
- Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
| | - Jin Li
- Jiangsu Province Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, China
- Department of VIP Clinic, Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
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23
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Loyola-Fonseca SC, Campello AF, Rodrigues RCV, Alves FRF, Brasil SC, Vilela CLS, Gonçalves LS, Provenzano JC, Siqueira JF, Rôças IN. Disinfection and Shaping of Vertucci Class II Root Canals after Preparation with Two Instrument Systems and Supplementary Ultrasonic Activation of Sodium Hypochlorite. J Endod 2023; 49:1183-1190. [PMID: 37419243 DOI: 10.1016/j.joen.2023.06.017] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 06/26/2023] [Accepted: 06/27/2023] [Indexed: 07/09/2023]
Abstract
INTRODUCTION This study compared disinfection and shaping after root canal preparation with either XP-endo Shaper or TruNatomy instrument systems, supplemented by ultrasonic activation of sodium hypochlorite (NaOCl) with either stainless-steel (SS) or nickel-titanium (NiTi) inserts. METHODS Mesial roots from mandibular molars with Vertucci class II configuration were divided into 2 groups (n = 24) based on anatomically paired micro-computed tomography (micro-CT) analyses. Pre and postpreparation micro-CT scans were obtained to evaluate the shaping performance. The canals were contaminated with a mixed bacterial culture for 30 days and then subjected to preparation with either XP-endo Shaper or TruNatomy instruments using NaOCl irrigation. Supplementary ultrasonic activation of NaOCl was conducted using either an SS (TruNatomy group) or NiTi (XP-endo Shaper group) insert. Bacteriological samples were taken from the canals before preparation (S1), after preparation (S2), and after the supplementary approach (S3). Bacterial reduction was evaluated using a quantitative real-time polymerase chain reaction. RESULTS Preparation with both instrument systems significantly reduced bacterial counts (P < .01). After preparation, 36% (TruNatomy) and 35% (XP-endo Shaper) were negative for bacteria. These values increased to 59% and 65% after ultrasonic activation with the SS and NiTi inserts, respectively. The quantitative data in S2 showed that XP-endo Shaper promoted a significantly higher bacterial reduction than TruNatomy (P < .05). No significant intragroup differences were observed after ultrasonic activation (P > .05), probably because the SS insert promoted a significantly higher S2-to-S3 reduction than the NiTi insert (P < .01). Micro-CT analysis revealed no significant differences in the unprepared areas between the groups (P > .05). CONCLUSIONS The XP-endo Shaper caused a significantly higher bacterial reduction than TruNatomy in Vertucci class II canals. Better antibacterial results after ultrasonic activation were observed for the SS ultrasonic inserts than for the NiTi inserts.
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Affiliation(s)
- Simone C Loyola-Fonseca
- Department of Dental Research, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, Rio de Janeiro, Brazil; Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Andrea F Campello
- Department of Dental Research, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, Rio de Janeiro, Brazil; Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Renata C V Rodrigues
- Department of Endodontics, Faculty of Dentistry, Veiga de Almeida University (UVA), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Flávio R F Alves
- Department of Dental Research, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, Rio de Janeiro, Brazil; Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, Rio de Janeiro, Brazil.
| | - Sabrina C Brasil
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Caren L S Vilela
- Laboratory of Molecular Microbial Ecology, Institute of Microbiology Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Lucio S Gonçalves
- Postgraduate Program in Dentistry, Estácio de Sá University, Rio de Janeiro, Rio de Janeiro, Brazil
| | - José Claudio Provenzano
- Department of Dental Research, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, Rio de Janeiro, Brazil; Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, Rio de Janeiro, Brazil
| | - José F Siqueira
- Department of Dental Research, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, Rio de Janeiro, Brazil; Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Isabela N Rôças
- Department of Dental Research, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, Rio de Janeiro, Brazil; Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, Rio de Janeiro, Brazil
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24
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Laslami K, Khaldoune S, Sy A, Drouri S, Benkiran I. Apical Extrusion: Is It an Inherent Occurrence During Every Endodontic Treatment? Cureus 2023; 15:e45211. [PMID: 37720124 PMCID: PMC10504573 DOI: 10.7759/cureus.45211] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/06/2023] [Indexed: 09/19/2023] Open
Abstract
The aim of this literature review was to analyze all available scientific data on apical extrusion and to identify and associate the possible factors influencing the occurrence of apical extrusion, ranging from the choice of the canal shaping system, the irrigation technique, to the choice of diameter and the apical limit of preparation. A bibliographic search for relevant articles on apical extrusion of debris, irrigants, and bacteria was performed using the following databases: PubMed, Cochrane Library, and ScienceDirect. This search identified articles published between 2010 and 2023 in two languages (French and English). After selective sorting, 25 relevant documents were included. All the studies retained clearly agree on the inherent nature of apical extrusion during endodontic treatment. At the same time, we also understand that the amount of extrusion can be influenced by a number of parameters throughout endodontic therapy. According to this review, despite the undeniable nature of apical extrusion during endodontic therapy, studies with relatable experimental models that approach in vivo conditions are required to establish exploitable conclusions regarding apical extrusion and its prevention.
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Affiliation(s)
- Kaoutar Laslami
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Medicine, University Hassan II, Casablanca, MAR
| | - Salma Khaldoune
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Medicine, University Hassan II, Casablanca, MAR
| | - Aly Sy
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Medicine, University Hassan II, Casablanca, MAR
| | - Sofia Drouri
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Medicine, University Hassan II, Casablanca, MAR
| | - Imane Benkiran
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Medicine, University Hassan II, Casablanca, MAR
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25
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Cameron AB, Abdelhamid HMHAS, George R. CBCT Segmentation and Additive Manufacturing for the Management of Root Canals with Ledges: A Case Report and Technique. J Endod 2023:S0099-2399(23)00472-7. [PMID: 37582414 DOI: 10.1016/j.joen.2023.08.002] [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: 06/19/2023] [Revised: 08/06/2023] [Accepted: 08/06/2023] [Indexed: 08/17/2023]
Abstract
Cone-beam computed tomography (CBCT) assessment of a ledge could be useful to a clinician; however, using this information effectively during a treatment procedure can be challenging. Advanced additive manufacturing technologies combined with semi-automated segmentation of root canals can help simulate the ledge and help in management of these iatrogenic complications. A patient presented after unsuccessful root canal treatment with a ledge on the left mandibular first molar. A CBCT was taken, and the images imported into a segmentation software (Mimics, Materialise). The canal was isolated, and segmentation performed along with the other structures of the tooth. A 3-dimensional digital model of the internal structures of the canal were used to design a mock-up which was additively manufactured. This was used as a preclinical guide to simulate the procedure, precurve the file, and manage the canal. This novel technique using virtual modeling from CBCT data post ledge formation allowed for successful and quick management of a tooth with ledges.
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Affiliation(s)
- Andrew B Cameron
- School of Medicine and Dentistry, Griffith University, Gold Coast, Australia; Menzies Health Institute Queensland Disability & Rehabilitation Center, Gold Coast, Australia
| | | | - Roy George
- School of Medicine and Dentistry, Griffith University, Gold Coast, Australia.
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26
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Coaguila-Llerena H, Lazo-Quezada G, Teves A, Zevallos-Chávez M, Faria G. Removal of separated instruments from unfavourable locations: Case reports using the HBW ultrasonic ring or a surgical approach. AUST ENDOD J 2023; 49:358-364. [PMID: 35932460 DOI: 10.1111/aej.12673] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 07/27/2022] [Accepted: 07/28/2022] [Indexed: 02/05/2023]
Abstract
Two patients were admitted to the dental clinic to evaluate two right mandibular first molars (both FDI no. 46). In Case 1, there was an accidental instrument separation, which was thought to have been bypassed; however, the instrument was located beyond the apical foramen, in the alveolar bone. The 1-week follow-up revealed that the fragment was close to the inferior alveolar nerve, thus allowing surgical removal to be performed. In Case 2, two separated instruments located in the apical third of the mesiobuccal and mesiolingual canals were removed using the HBW ultrasonic ring coupled to ISO 10 and 15 hand instruments. The 3-month and 1-year follow-ups (Case 1), and the 2-year and 3-year follow-ups (Case 2) showed a favourable evolution in both cases. It can be concluded that both the surgical approach and the HBW ultrasonic ring are viable options for the removal of separated instruments in unfavourable locations.
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Affiliation(s)
- Hernán Coaguila-Llerena
- Department of Restorative Dentistry, Araraquara School of Dentistry, São Paulo State University - UNESP, Araraquara, Brazil
| | | | - Abel Teves
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo - USP, Bauru, Brazil
| | - Marco Zevallos-Chávez
- Department of Endodontics, Catholic University of Santa Maria - UCSM, Arequipa, Peru
| | - Gisele Faria
- Department of Restorative Dentistry, Araraquara School of Dentistry, São Paulo State University - UNESP, Araraquara, Brazil
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27
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Tavares KIMC, Pinto JC, Santos-Junior AO, Duarte MAH, Guerreiro-Tanomaru JM, Tanomaru-Filho M. Effect of Additional Apical Preparation on Retreatment of Curved Root Canals Filled with Different Sealers. Eur J Dent 2023; 17:636-641. [PMID: 36075266 PMCID: PMC10569835 DOI: 10.1055/s-0042-1750693] [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] [Indexed: 10/14/2022] Open
Abstract
OBJECTIVE This study assessed the influence of additional apical preparation on material removal during retreatment of curved root canals filled with different sealers. MATERIALS AND METHODS Twelve mesial roots of mandibular molars with two separate canals and curvature between 25 and 35 degrees were selected. The working length was established 1-mm short of the apical foramen, and all the root canals were prepared using ProDesign R (PDR) 25/0.06. After preparation, the root canals were divided in two groups (n = 12) and filled by continuous wave condensation technique with NeoMTA Plus or AH Plus. All the root canals were retreated using rotary ProDesign Logic RT 25/0.08, reciprocating PDR 25/0.06 and apical preparation with PDR 35/0.05. Additional apical preparation was performed with ProDesign Logic (PDL) 50/0.01. The samples were scanned using a Skycan 1176 micro-computed tomography (micro-CT), voxel size 8.74 µm, before and after the retreatment procedures. Percentages of remaining filling material were evaluated. STATISTICAL ANALYSIS The data were submitted to paired and unpaired t-tests (α = 0.05). RESULTS Percentage of remaining filling material was similar between the root canals filled with NeoMTA Plus or AH Plus sealer after retreatment using PDR 35/0.05, and after additional apical preparation using PDL 50/0.01 (p > 0.05). However, PDL 50/0.01 significantly decreased the percentage of remaining filling material in the apical third after the additional apical preparation for both sealers (p < 0.05). CONCLUSION NeoMTA Plus or AH Plus did not influence the retreatment of curved root canals. ProDesign Logic 50/0.01 promoted greater filling material removal in the apical third.
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Affiliation(s)
- Karina I. M. C. Tavares
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University, Araraquara, São Paulo, Brazil
| | - Jader C. Pinto
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University, Araraquara, São Paulo, Brazil
| | - Airton O. Santos-Junior
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University, Araraquara, São Paulo, Brazil
| | - Marco A. H. Duarte
- Department of Dentistry, Endodontics and Dental Materials, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | | | - Mario Tanomaru-Filho
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University, Araraquara, São Paulo, Brazil
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Jaggi P, Mulay S, Tandale A, Jadhao R, Joshi P, Aras S, Krishnakumar K, Krishna V. Comparative Evaluation of Debris Extrusion, Remaining Dentin Thickness and Fracture Resistance of Endodontically Treated Teeth Using Rotary and Reciprocating Endodontic File Systems: An In Vitro Study. Cureus 2023; 15:e42290. [PMID: 37609092 PMCID: PMC10441161 DOI: 10.7759/cureus.42290] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/22/2023] [Indexed: 08/24/2023] Open
Abstract
BACKGROUND Preventing the apical extrusion of debris during instrumentation is of paramount importance to reduce the occurrence of flare-ups in endodontically treated teeth. Furthermore, an essential requirement for the longevity and strength of an endodontically treated tooth and its ability to resist fracture is the preservation of residual dentin thickness during instrumentation. The aim of this study was to compare the amount of debris extrusion, remaining dentin thickness at the coronal third, middle third, apical third, and the fracture resistance of the teeth using rotary (TruNatomy; Dentsply Sirona, Charlotte, NC) and reciprocating (WaveOne Gold; Dentsply Sirona) endodontic file systems. METHODS An in vitro study included 52 single-rooted, oval canal shaped teeth that underwent exploration and initial cleaning with a no. 15 K-file. The prepared canals were then randomly assigned to two groups: Group I, with instrumentation with the TruNatomy rotary file (n=26) and Group II, with instrumentation with the WaveOne Gold reciprocating file. Parameters like debris extrusion, remaining dentin thickness, and fracture resistance were evaluated in both the groups. Analysis was performed using a paired t-test for the assessment of difference between groups and one-way ANOVA test followed by the post-hoc Tukey test for difference between the coronal, middle and apical third for each study group. RESULTS The results revealed no significant difference (t=0.454, p=0.652) between the TruNatomy rotary file and WaveOne Gold reciprocating file in apical extrusion of debris after their use in root canal therapy. For the remaining dentin thickness, a significant difference was present between the TruNatomy rotary file and WaveOne Gold reciprocating rotary file at the coronal (t=5.766, p<0.0001) and middle (t=3.690, p=0.001) levels. The mean fracture resistance was significantly more (t=15.877, p<0.0001) with the TruNatomy rotary file compared to the WaveOne Gold reciprocating rotary file. CONCLUSION The TruNatomy rotary file system outperformed the WaveOne Gold reciprocating file system in terms of maintaining the remaining dentin thickness and providing improved fracture resistance. Nevertheless, debris extruded apically was comparable between the TruNatomy rotary file system and the WaveOne Gold reciprocating file system.
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Affiliation(s)
- Prakriti Jaggi
- Department of Conservative Dentistry and Endodontics, Dr. D.Y. Patil Dental College and Hospital, Dr. D.Y. Patil Vidyapeeth, Pune, IND
| | - Sanjyot Mulay
- Department of Conservative Dentistry and Endodontics, Dr. D.Y. Patil Dental College and Hospital, Dr. D.Y. Patil Vidyapeeth, Pune, IND
| | - Anita Tandale
- Department of Conservative Dentistry and Endodontics, Dr. D.Y. Patil Dental College and Hospital, Dr. D.Y. Patil Vidyapeeth, Pune, IND
| | - Renuka Jadhao
- Department of Conservative Dentistry and Endodontics, Dr. D.Y. Patil Dental College and Hospital, Dr. D.Y. Patil Vidyapeeth, Pune, IND
| | - Poonam Joshi
- Department of Conservative Dentistry and Endodontics, Dr. D.Y. Patil Dental College and Hospital, Dr. D.Y. Patil Vidyapeeth, Pune, IND
| | - Sanket Aras
- Department of Conservative Dentistry and Endodontics, Dr. D.Y. Patil Dental College and Hospital, Dr. D.Y. Patil Vidyapeeth, Pune, IND
| | - Karishma Krishnakumar
- Department of Conservative Dentistry and Endodontics, Dr. D.Y. Patil Dental College and Hospital, Dr. D.Y. Patil Vidyapeeth, Pune, IND
| | - Vamshi Krishna
- Department of Conservative Dentistry and Endodontics, Dr. D.Y. Patil Dental College and Hospital, Dr. D.Y. Patil Vidyapeeth, Pune, IND
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29
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Versiani MA, Martins J, Ordinola-Zapata R. Anatomical complexities affecting root canal preparation: a narrative review. Aust Dent J 2023; 68 Suppl 1:S5-S23. [PMID: 37984802 DOI: 10.1111/adj.12992] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/15/2023] [Indexed: 11/22/2023]
Abstract
A fundamental aspect of the Endodontic field is the knowledge of root canal anatomy. Using a variety of techniques, the internal and external anatomy of teeth have been extensively investigated throughout the past century. Recent improvements in three-dimensional computed tomography have enabled more detailed evaluations of root canal morphology in both clinical and laboratory settings. Essentially, researches have unveiled that the root canal constitutes a complex system, comprising not only the main root canal but also lateral components, including isthmuses, fins, accessory canals and apical ramifications. Undoubtedly, this intricate morphology poses a significant challenge when it comes to the process of shaping, cleaning and disinfecting the root canal system. This article aims to explore the anatomical aspects of the root canal system that impact the chemomechanical procedures.
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Affiliation(s)
- M A Versiani
- Dental Specialty Center, Brazilian Military Police, Belo Horizonte, Brazil
| | - Jnr Martins
- Faculdade de Medicina Dentária, Universidade de Lisboa, Lisboa, Portugal
- Grupo de Investigação em Bioquímica e Biologia Oral, Unidade de Investigação em Ciências Orais e Biomédicas (UICOB), Faculdade de Medicina Dentária, Universidade de Lisboa, Lisboa, Portugal
- Centro de Estudo de Medicina Dentária Baseada na Evidência (CEMDBE) - Cochrane Portugal, Faculdade de Medicina Dentária, Universidade de Lisboa, Lisboa, Portugal
| | - R Ordinola-Zapata
- Endodontic Division, Department of Restorative Sciences, University of Minnesota School of Dentistry, Minneapolis, Minnesota, USA
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30
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Figueira VZ, Vivacqua FD, Duarte MAH, Vasconcelos BC, Vivacqua-Gomes N. Ex vivo evaluation of the influence of cervical preflaring on choice of apical reciprocating file. Gen Dent 2023; 71:73-77. [PMID: 37083618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
The aim of this study was to evaluate the influence of cervical preflaring on the choice of reciprocating file size (Reciproc system) and the difficulty in reaching the working length for instrumentation of molar root canals. A total of 352 human molars were divided into 2 groups of 176 molars each. In the no preflaring (NPF) group, no cervical preflaring was performed. A reciprocating file (R25, R40, or R50) was selected, and instrumentation was performed in accordance with the manufacturer's recommendations. In the preflaring (PF) group, a file was selected, and cervical preflaring was performed with the use of No. 30/.10 or No. 25/.08 orifice shaper instruments. The clinician then selected a new reciprocating file or used the originally selected file to perform the instrumentation as done in the NPF group. Any changes in choice of file after preflaring were documented for the PF group, and the number of insertions required to reach the working length was recorded for both groups. After preflaring, the selected file was changed from R25 to R40 in 20.08% of canals, from R25 to R50 in 0.40% of canals, and from R40 to R50 in 42.14% of canals. After preflaring, 2.88% of the canals with an initial selection of an R50 file required an instrument with a larger diameter for effective preparation. There was a statistically significant difference between the groups for all file size changes (P < 0.001; χ² test). The mean numbers of instrument insertions needed for the NPF and PF groups, respectively, were 4.09 and 2.42 (R25); 3.49 and 2.31 (R40); and 2.70 and 1.81 (R50). There was a statistically significant difference between the groups for all file sizes (P < 0.001; Kruskal-Wallis test). Under the conditions of this study, preflaring enabled a more suitable selection of reciprocating instrument, which, in turn, allowed for fewer insertions of the file up to the working length.
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31
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Matoso FB, Montagner F, Jardine AP, Quintana RM, Grecca FS, Kopper PMP. Effect of different disinfection protocols in bacterial viability of an intraradicular biofilm formed in situ. Braz Dent J 2023; 34:42-49. [PMID: 37466524 PMCID: PMC10355264 DOI: 10.1590/0103-6440202305244] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 04/18/2023] [Indexed: 07/20/2023] Open
Abstract
The present study aimed to evaluate bacterial viability after the use of different disinfection protocols in root canals infected with a multispecies biofilm (MB) formed in situ. Palatal roots with a single canal were obtained from extracted maxillary molars and sterilized before being inserted into the mouth. The roots were contaminated with a MB in an intraoral appliance worn by ten volunteers. All volunteers wore six roots simultaneously in two intraoral devices for 21 days. One root from each volunteer was assigned to each group (n=10): PUI - passive ultrasonic irrigation; EC - Easy Clean; XPF - XP-endo Finisher; aPDT - antimicrobial photodynamic therapy; CI - conventional irrigation; and NC - negative control. The samples were evaluated under confocal laser scanning microscopy. The percentage of viable cells (VC) was calculated over the total percentage of MB biovolume. Data were statistically analyzed (α=5%). The cell viability in the entire root canal or for each third was compared between groups (Kruskal-Wallis test, Dunn post-hoc test) and for the same group (Friedman test, Dunn post-hoc test). Disinfection protocols were not significantly different from each other (P>.05). Samples in EC, PUI, and aPDT had lower cell viability than in NC (P<.05). In the coronal third of samples in the EC, XPF, PUI and aPDT, the percentage of VC biovolume was lower than in the NC (P<.05). The percentage of VC in EC samples was lower in the coronal and middle thirds than in the apical third (P<.05). EC, PUI and aPDT had significant effects on cell viability in intraradicular multispecies biofilm formed in situ when compared with untreated samples.
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Affiliation(s)
- Felipe Barros Matoso
- Graduate Program in Dentistry, Federal University of Rio Grande
do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Francisco Montagner
- Graduate Program in Dentistry, Federal University of Rio Grande
do Sul (UFRGS), Porto Alegre, RS, Brazil
| | | | - Ramiro Martins Quintana
- Graduate Program in Dentistry, Federal University of Rio Grande
do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Fabiana Soares Grecca
- Graduate Program in Dentistry, Federal University of Rio Grande
do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Patricia Maria Poli Kopper
- Graduate Program in Dentistry, Federal University of Rio Grande
do Sul (UFRGS), Porto Alegre, RS, Brazil
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Emam M, Ghanem L, Abdel Sadek HM. Effect of different intraoral scanners and post-space depths on the trueness of digital impressions. Dent Med Probl 2023. [PMID: 37070711 DOI: 10.17219/dmp/162573] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/15/2023] [Accepted: 03/23/2023] [Indexed: 04/19/2023] Open
Abstract
BACKGROUND The trueness of intraoral scanners (IOSs) has been evaluated in many clinical situations. However, the tests of their performance when scanning post-space preparations are still lacking. OBJECTIVES The aim of the present study was to compare the trueness of the digital impressions of post spaces with different depths, captured by means of different IOSs. MATERIAL AND METHODS Digital impressions of teeth (N = 16) with post spaces of depths of 8 mm and 10 mm were captured. Three IOSs were used, including Primescan AC, Medit i500 and CS 3600. The STL files were compared to the files obtained from the traditional impression scanning performed with an InEos X5 desktop scanner. Then, reverse engineering software measured the trueness values, which were analyzed using the two-way analysis of variance (ANOVA), followed by Tukey's post-hoc test. The significance level was set at p < 0.05. RESULTS Significant differences were found between the scanners in terms of root mean square (RMS) values (p < 0.001). The highest RMS value was found for CS 3600 (0.30 ±0.11 mm), followed by Primescan AC (0.26 ±0.09 mm), while the lowest value was found for Medit i500 (0.18 ±0.05 mm). The 8-millimeter-deep post spaces had a significantly higher RMS value than the 10-millimeter-deep ones (0.28 ±0.10 mm and 0.21 ±0.09 mm, respectively) (p = 0.009). CONCLUSIONS The Medit i500 scanner showed the highest post-space digital impression trueness as compared to Primescan AC and CS 3600. In the digital impressions captured with CS 3600, the 10 mm postspace depth had higher trueness than the 8 mm depth. Moreover, CS 3600 was less able to capture the full length of both the 8 mm and 10 mm post-space depths than Primescan AC and Medit i500.
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Affiliation(s)
- Marwa Emam
- Department of Fixed Prosthodontics, Faculty of Dentistry, Ain Shams University, Cairo, Egypt
| | - Lomaya Ghanem
- Department of Fixed Prosthodontics and Conservative Dentistry, Faculty of Oral and Dental Medicine, Misr International University, Cairo, Egypt
| | - Hoda M Abdel Sadek
- Department of Fixed Prosthodontics, Faculty of Dentistry, Ain Shams University, Cairo, Egypt
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Pereira RP, Bramante CM, Duarte MAH, Alcalde MP, Piai CDGS, Vivan RR. Postoperative pain after using passive ultrasonic irrigation and EasyClean device, irrigation activation techniques: a randomized clinical trial. J Endod 2023:S0099-2399(23)00211-X. [PMID: 37068622 DOI: 10.1016/j.joen.2023.04.002] [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: 02/02/2023] [Revised: 04/03/2023] [Accepted: 04/05/2023] [Indexed: 04/19/2023]
Abstract
INTRODUCTION This randomized clinical trial aimed to compare postoperative pain after the use of two different irrigation activation techniques, passive ultrasonic irrigation and the EasyClean device. METHODS Sixty-six single-rooted teeth diagnosed with asymptomatic pulp necrosis and apical periodontitis were randomly assigned to two experimental groups (n=33), which differed in the irrigation activation technique. Postoperative pain levels were assessed after 24, 48, and 72 hours using a verbal rating scale; the ibuprofen intake amount was recorded at the same time intervals. Data were analyzed using Student's t-test, Mann-Whitney U and Fisher's exact tests, with a significance level of 5%. RESULTS Postoperative pain levels and analgesic intake frequency were not significantly different across the two irrigation activation techniques (P > .05). The frequencies obtained in relation to the prevalence of postoperative pain were 3.1-25.8% for all participants of the two studied groups. CONCLUSION The irrigation activation techniques of passive ultrasonic irrigation and the EasyClean device were found to be equivalent in terms of postoperative pain and analgesic intake.
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Affiliation(s)
- Renato Piai Pereira
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil.
| | - Clovis Monteiro Bramante
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Marco Antonio Hungaro Duarte
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Murilo Priori Alcalde
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | | | - Rodrigo Ricci Vivan
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
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Jose J, Thamilselvan A, Teja KV, Rossi-Fedele G. Influence of access cavity design, sodium hypochlorite formulation and XP-endo Shaper usage on apical debris extrusion - A laboratory investigation. AUST ENDOD J 2023; 49:6-12. [PMID: 35679461 DOI: 10.1111/aej.12637] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 05/15/2022] [Indexed: 11/28/2022]
Abstract
This study assessed the amount of apically extruded debris during root canal preparation using XP-endo shaper and the supplemental use of XP-endo finisher comparing the use of traditional endodontic access or conservative endodontic access cavities and liquid or gel-based formulations of 5.25% sodium hypochlorite or distilled water as supplemental agents. Maxillary first premolar teeth (N = 148) were randomly divided based on their access cavity design and sub-grouped according to the supplemental agent used. The amount of extruded debris was analysed based on the dry weight of the debris collected using a previously established laboratory methodology. Debris extrusion occurred in all groups. Overall, the traditional endodontic access cavity design was associated with more debris extrusion compared to the conservative type. The use of sodium hypochlorite solution showed higher debris extrusion than the gel, whilst distilled water had intermediate values.
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Affiliation(s)
- Jerry Jose
- Department of Conservative Dentistry and Endodontics, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, India
| | - Aishuwariya Thamilselvan
- Department of Conservative Dentistry and Endodontics, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, India
| | - Kavalipurapu Venkata Teja
- Department of Conservative Dentistry and Endodontics, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, India
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Scherer AS, Bier CAS, Vanni JR. Effect of glide path instruments in cyclic fatigue resistance of reciprocating instruments after three uses. Braz Dent J 2023; 34:27-34. [PMID: 37194854 PMCID: PMC10208288 DOI: 10.1590/0103-6440202305226] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 03/07/2023] [Indexed: 05/18/2023] Open
Abstract
The present study aims to evaluate the effect of different glide path instruments on the cyclic fatigue resistance of reciprocating endodontic instruments after three uses in mandibular molars. Eighteen Wave One Gold Primary reciprocating instruments were selected and randomly divided into three groups according to the glide path instrument: G1 - manual file K #15, G2 - Wave One Glider reciprocating instrument, and G3 (control group) - glide path was not performed. The reciprocating instruments were tested on mandibular molars and subdivided into three other groups: a new instrument, an instrument with a previous single-use, and an instrument with two previous uses. After the endodontic instrumentation, the instruments were subjected to the cyclic fatigue resistance test using an appropriate tool. The data were submitted to the Shapiro-Wilk test, and subsequently the Kruskal-Wallis test with a significance level of 5%. The results showed no statistical difference between the groups. Thus, it was concluded that the creation of a glide path did not affect the cyclic fatigue resistance of the reciprocating instrument. In addition, the reuse of final preparation instruments up to two times proved to be safe since no fractures were observed in the tested instruments.
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Affiliation(s)
- André Schroder Scherer
- Graduate program in Dental Science, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | | | - José Roberto Vanni
- Graduate program in Dental Science, Dental Specialty Center Meridional, Passo Fundo, Rio Grande do Sul, Brazil
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Mohammadi D, Mehran M, Frankenberger R, BabeveyNejad N, Banakar M, Haghgoo R. Comparison of apical debris extrusion during root canal preparation in primary molars using different file systems: an in vitro study. AUST ENDOD J 2022; 48:473-480. [PMID: 34751479 DOI: 10.1111/aej.12582] [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: 03/25/2021] [Revised: 09/29/2021] [Accepted: 10/06/2021] [Indexed: 12/14/2022]
Abstract
This study aimed to compare the amount of debris extrusion of four endodontic systems made of Nickle-Titanium alloy. This in vitro study was done on 80 extracted primary molars. They were selected by cone-beam computed tomography and randomly divided into four groups (n = 20) to be prepared to the apical size of 25 by one of the systems: Reciproc, Protaper Universal, Neolix, or Hyflex CM. Debris was collected into Eppendorf microtubes and placed in an incubator to evaporate the washing solution. Debris was weighed by a digital scale of 0.01 g precision. Data were statistically analysed using SPSS software. Tukey's comparison was used to determine the difference between the four file systems (α = 0.05). Debris extrusion after Reciproc preparation (0.00320) was significantly higher than the other (P < 0.05), with no significant difference having been observed among the other systems (P > 0.05). It can be concluded that all systems under investigation exhibited debris extrusion.
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Affiliation(s)
- Davood Mohammadi
- Department of Pediatric Dentistry, Faculty of Dentistry, Ilam Medical University, Ilam, Iran
| | - Majid Mehran
- Department of Pediatric Dentistry, Faculty of Dentistry, Shahed University, Tehran, Iran
| | - Roland Frankenberger
- Department of Operative Dentistry and Endodontics, Dental School, University of Marburg and University Medical Center Giessen and Marburg, Marburg, Germany
| | - Newsha BabeveyNejad
- Department of Pediatric Dentistry, Faculty of Dentistry, Shahed University, Tehran, Iran
| | - Morteza Banakar
- Department of Pediatric Dentistry, Faculty of Dentistry, Shahed University, Tehran, Iran
| | - Roza Haghgoo
- Department of Pediatric Dentistry, Faculty of Dentistry, Shahed University, Tehran, Iran
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Yang W, Han J, Wang Y, Li F, Du Q. Effect evaluation of different methods for removal of root canal filling materials. Hua Xi Kou Qiang Yi Xue Za Zhi 2022; 40:685-689. [PMID: 36416321 PMCID: PMC9763950 DOI: 10.7518/hxkq.2022.06.009] [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] [MESH Headings] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 08/17/2022] [Indexed: 06/16/2023]
Abstract
OBJECTIVES This study aimed to evaluate the efficacy of three methods in root canal retreatment to remove the filling material in the root canals. METHODS Ninety tooth roots filled by gutta percha or plasticized material (n=45, each) were randomly divided into three groups (n=15). WaveOne (WaveOne group), 1#P drill+WaveOne (1#P+WaveOne group), and ultrasound P5 working end ET25+ProTaper Universal (P5+ProTaper Universal group) were used to remove the root canal filling material and prepare for root canal. The operating time of each canal was recorded and the percentage of residual filling material area was measured on the root canal wall of the mesial and distal dissected root section. The degree of deviation of the root canal after operation was measured for the root samples filled by gutta percha. RESULTS The type of root filling material and the method of root canal retreatment had no significant effect on the percentage of residual area of the filling material (P>0.05). However, the remaining filling material area of apical 1/3 of the root canal was significantly higher than that of cervical 1/3 of the root canal (P<0.05). The average operating times for removing gutta-percha or plasticized material in the W and 1#P+WaveOne groups were significantly less than that in the P5+ProTaper Universal group (P=0.000). The root canal retreatment methods had no significant effect on the curvature of the root canal (P=0.650). CONCLUSIONS WaveOne single file's cleaning ability and center positioning ability were similar to those of ProTaper Universal. Moreover, WaveOne can be independently used for most root canals without a pathway when removing the root canal fillings, thereby simplifying the process of root canal retreatment.
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Affiliation(s)
- Wenjun Yang
- Medical School, Dalian University, Dalian 116622, China
| | - Jiajia Han
- Medical School, Dalian University, Dalian 116622, China
| | - Yichen Wang
- Medical School, Dalian University, Dalian 116622, China
| | - Fengxiang Li
- Medical School, Dalian University, Dalian 116622, China
| | - Qitao Du
- General Dental Clinical Ⅱ, Dalian Stomatological Hospital, Dalian 116021, China
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Unno H, Ebihara A, Hirano K, Kasuga Y, Omori S, Nakatsukasa T, Kimura S, Maki K, Okiji T. Mechanical Properties and Root Canal Shaping Ability of a Nickel-Titanium Rotary System for Minimally Invasive Endodontic Treatment: A Comparative In Vitro Study. Materials (Basel) 2022; 15:7929. [PMID: 36431416 PMCID: PMC9692467 DOI: 10.3390/ma15227929] [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] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/02/2022] [Accepted: 11/03/2022] [Indexed: 06/16/2023]
Abstract
Selection of an appropriate nickel−titanium (NiTi) rotary system is important for minimally invasive endodontic treatment, which aims to preserve as much root canal dentin as possible. This study aimed to evaluate selected mechanical properties and the root canal shaping ability of TruNatomy (TRN), a NiTi rotary system designed for minimally invasive endodontic shaping, in comparison with existing instruments: HyFlex EDM (HEDM), ProTaper Next (PTN), and WaveOne Gold (WOG). Load values measured with a cantilever bending test were ranked as TRN < HEDM < WOG < PTN (p < 0.05). A dynamic cyclic fatigue test revealed that the number of cycles to fracture was ranked as HEDM > WOG > TRN > PTN (p < 0.05). Torque and vertical force generated during instrumentation of J-shaped artificial resin canals were measured using an automated instrumentation device connected to a torque and vertical force measuring system; TRN exhibited smaller torque and vertical force values in most comparisons with the other instruments. The canal centering ratio for TRN was smaller than or comparable to that for the other instruments except for WOG at the apex level. Under the present experimental conditions, TRN showed higher flexibility and lower torque and vertical force values than the other instruments.
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Katarzyna Machut, Agata Żółtowska. Plasma Rich in Growth Factors in the Treatment of Endodontic Periapical Lesions in Adult Patients: 3-Dimensional Analysis Using Cone-Beam Computed Tomography on the Outcomes of Non-Surgical Endodontic Treatment Using A-PRF+ and Calcium Hydroxide: A Retrospective Cohort Study. J Clin Med 2022; 11:6092. [PMID: 36294413 DOI: 10.3390/jcm11206092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/13/2022] [Accepted: 10/14/2022] [Indexed: 01/24/2023] Open
Abstract
The study presents results of periapical lesion healing after one-visit root canal treatment (RCT) with Advanced Platelet Rich Fibrin plus (A-PRF+) application compared to a two-visit RCT with an inter-appointment calcium hydroxide filling. The comparison was made based on CBCT-Periapical Index (PAI) lesion volume changes and the occurrence of post endodontic pain. The results of 3D radiographic healing assessments based on volume reduction criteria were different from the CBCT-PAI. Based on volume changes, the healing assessment criteria-9 cases from the Study Group and six cases in the Control Group were defined as healed. Based on the CBCT-PAI healing assessment criteria, 8 cases from the Study Group and 9 cases from the Control Group were categorized as healed. The volumes of apical radiolucency were, on average, reduced by 85.93% in the Study Group and by 72.31% in the Control Group. Post-endodontic pain occurred more frequently in the Control than in the Study Group. The highest score of pain in the Study Group was five (moderate pain, n = 1), while in the Control Group, the highest score was eight (severe pain, n = 2). In the 6-month follow-up, CBCT scans showed a better healing tendency for patients in the Study Group.
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Lakshmanan L, Jeevanandan G, Vishwanathaiah S, Maganur PC, Alzahrani KJ, Alkahtani A, Boreak N, Testarelli L, Baeshen HA, Patil S. Anti-microbial efficacy of root canal preparation in deciduous teeth with manual and rotary files: A randomized clinical trial. Niger J Clin Pract 2022; 25:1681-1686. [PMID: 36308239 DOI: 10.4103/njcp.njcp_71_22] [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] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
BACKGROUND In a pulpectomy, the eradication of microbes from the primary root canal is accomplished through biomechanical preparation, which could be carried out with either manual or rotary instruments. AIMS The objective of this clinical trial was to evaluate the efficiency of manual K-files, H-files, and Kedo-S Square rotary files in reducing microbial flora after canal preparation in primary molars. MATERIALS AND METHODS This randomized clinical trial consisted of 45 primary molars requiring pulpectomy. The teeth were randomly allocated to one of the three groups: Group I: Manual K-files, Group II: Manual H-files, and Group III: Kedo-S Square rotary files, based on the type of instrumentation. Pre-and Post-instrumentation sampling was performed using clean absorbent paper points and kept in a clean Eppendorf tube having thioglycolate broth as the transport medium. Culturing was performed on agar media from which both aerobic and anaerobic microbial counts were estimated. Collected data were statistically analyzed using one-way analysis of variance (ANOVA) and Wilcoxon signed-rank test. Following root canal preparation, 87-89% reduction of the aerobic and anaerobic microbial load was noted in group I, whereas it was an 89-92% reduction in group II and a 93-95% reduction in group III. RESULTS Biomechanical preparation with Kedo-S Square rotary file showed higher efficacy in microbial reduction compared to manual instrumentation. CONCLUSION Manual and rotary files were equally effective in removing root canal microbes. Biomechanical preparation with a KedoS Square rotary file resulted in greater microbial efficacy. Hence In children, effective root canal cleaning in a short period of time is a major consideration.
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Affiliation(s)
- L Lakshmanan
- Department of Pediatric and Preventive Dentistry, Saveetha Dental College, Chennai, Tamil Nadu, India
| | - G Jeevanandan
- Department of Pediatric and Preventive Dentistry, Saveetha Dental College, Chennai, Tamil Nadu, India
| | - S Vishwanathaiah
- Department of Preventive Dental Sciences, Division of Pediatric Dentistry, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - Prabhadevi C Maganur
- Department of Preventive Dental Sciences, Division of Pediatric Dentistry, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - K J Alzahrani
- Department of Clinical Laboratories Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - A Alkahtani
- Department of Restorative Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - N Boreak
- Department of Restorative Dental Sciences, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - L Testarelli
- Department of Oral and Maxillofacial Sciences, Sapienza University, University of Rome, Rome, Italy
| | - H A Baeshen
- Department of Orthodontics, College of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - S Patil
- College of Dental Medicine, Roseman University of Health Science, South Jordan, UTAH-84095, USA; College of Dentistry, Jazan University, Jazan, Saudi Arabia
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Mohsen Hasheminia S, Nohekhan A, Khazaei S, Farhad A. Apical transportation with different root canal preparation techniques using edgEEvolve rotary instruments. Dent Res J (Isfahan) 2022; 19:76. [PMID: 36407781 PMCID: PMC9667504] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 07/20/2021] [Accepted: 09/11/2021] [Indexed: 06/16/2023] Open
Abstract
BACKGROUND This study aimed to investigate the extent of apical transportation following instrumentation with EdgeEvolve rotary instruments applying single-length and crown-down techniques. MATERIALS AND METHODS In this experimental in-vitro study, 60 mandibular molars with mesiobuccal curvatures of 20°-40° were selected, and digital radiographic images were taken. Teeth were randomly assigned into two groups of single-length and crown-down preparation techniques. In both mentioned groups, EdgeEvolve rotary system was used. After preparation, the same as the previous ones, digital radiographic images were taken from the canals. The data were analyzed using Student' t-test and ShapiroWilk normality test (P = 0.05). RESULTS The mean standard deviation (SD) for apical transportation in the single-length and the crown-down group was 4.42 (2.9) and 7.48 (3.9) degrees, respectively (P < 0.05). The mean SD of the preparation time in the single-length and crown-down group was 135.07 (30.8) and 109.07 (20.8), respectively (P < 0.05). The apical transportation and the time of preparation between the two groups were significant. CONCLUSION Using EdgeEvolve rotary instruments canal preparation with both single-length and crown-down techniques led to some degrees of apical transportation.
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Affiliation(s)
- Seyyed Mohsen Hasheminia
- Department of Endodontics, Dental Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
| | | | - Saber Khazaei
- Department of Endodontics, School of Dentistry, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Alireza Farhad
- Department of Endodontics, Dental Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
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Campello AF, Rodrigues RCV, Alves FRF, Miranda KR, Brum SC, Mdala I, Siqueira JF Jr, Rôças IN. Enhancing the intracanal antibacterial effects of sodium hypochlorite with etidronic acid or citric acid. J Endod 2022:S0099-2399(22)00414-9. [PMID: 35750221 DOI: 10.1016/j.joen.2022.06.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 06/10/2022] [Accepted: 06/11/2022] [Indexed: 11/20/2022]
Abstract
INTRODUCTION This study evaluated the bacterial reduction promoted by root canal preparation using irrigation with sodium hypochlorite (NaOCl) alone, associated with etidronic acid (HEDP) or alternated with citric acid, and after a supplementary agitation step. METHODS Extracted mandibular premolars were selected and distributed into 3 groups based on anatomically paired micro-computed tomographic analyses. The canals were contaminated with Enterococcus faecalis for 30 days and then subjected to chemomechanical preparation with a reciprocating instrument under irrigation with NaOCl alone, mixed with HEDP (NaOCl/HEDP), or alternated with citric acid (NaOCl/CA). A supplementary agitation step with the XP-endo Finisher was performed in all groups. Intracanal bacteriological samples were taken before (S1) and after preparation (S2), and after the supplementary approach (S3). DNA was extracted from the samples and subjected to quantitative real-time polymerase chain reaction. RESULTS Intragroup analyses revealed a substantial bacterial reduction from S1 to S2 or S3 in all groups (p<0.01). The supplementary agitation resulted in S2-to-S3 bacterial reduction of 6%, 68%, and 80% in the NaOCl, NaOCl/HEDP, and NaOCl/CA groups, respectively. Irrigation with NaOCl alone resulted in 53% and 47% of samples negative for bacteria in S2 and S3, respectively. Corresponding figures for NaOCl/HEDP were 75% and 85%, and 44% and 72% for NaOCl/CA. Intergroup analyses of S2 samples showed that NaOCl/HEDP was significantly more effective than the other two in reducing the bacterial levels (p<0.05). After the supplementary approach, both NaOCl/HEDP and NaOCl/CA were significantly more effective than NaOCl alone (p<0.05), with no significant differences between them (p>0.05). CONCLUSION Both the freshly combined NaOCl/HEDP solution and the alternate use of NaOCl and citric acid followed by XP-endo Finisher agitation resulted in significantly higher intracanal bacterial reduction than NaOCl alone.
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de Carvalho KKT, Petean IBF, Silva-Sousa AC, de Camargo R, Mazzi-Chaves JF, Silva-Sousa YTC, Sousa-Neto MD. Evaluation of rotary instruments with whipping motion in the biomechanical preparation of large root canals of young permanent teeth. AUST ENDOD J 2022; 49:130-139. [PMID: 35649116 DOI: 10.1111/aej.12633] [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: 10/26/2021] [Revised: 04/05/2022] [Accepted: 05/16/2022] [Indexed: 11/30/2022]
Abstract
Shaping ability evaluation of taper ./01 instruments in large root canals, by microcomputed tomography (micro-CT) and scanning electron microscopy (SEM). Maxillary central incisors with large diameter root canals were divided into two groups (n = 10): XP-Endo Shaper (FKG-Dentaire, Switzerland) and manual instrumentation (FKG-Dentaire). Two- and three-dimensional parameters from cervical to apical root thirds were evaluated by micro-CT. Apical stop was evaluated by SEM images. Data were analysed by ANOVA and Tukey tests (α = 5%). XP-Endo Shaper allowed a regular biomechanical preparation with less dentinal wear compared with manual instrumentation, which showed excessive wear of the thin root canal walls (p < 0.05). Roundness and SMI showed similarity between both protocols (p > 0.05). XP-Endo Shaper SEM showed a regular and well-defined shape of the apical foramen suggesting the formation of the apical stop. Reduced diameter and taper instruments promoted a conservative wear and a well-defined apical stop formation in large root canals.
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Affiliation(s)
| | - Igor Bassi Ferreira Petean
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Alice Corrêa Silva-Sousa
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Rafael de Camargo
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Jardel Francisco Mazzi-Chaves
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | | | - Manoel Damião Sousa-Neto
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
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Merima B, Ivona B, Dubravka M, Gianluca P, Ivica A. Surface roughness and cyclic fatigue resistance of reciprocating and novel rotary instruments after use in curved root canals. AUST ENDOD J 2022; 49:117-123. [PMID: 35605146 DOI: 10.1111/aej.12627] [Citation(s) in RCA: 1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 12/05/2021] [Accepted: 05/05/2022] [Indexed: 12/14/2022]
Abstract
This study evaluated surface wear and resistance to fracture of reciprocating and novel rotary instruments after use in curved canals. Twenty new instruments (n = 5/each group): Reciproc Blue, WaveOne Gold, XP-endo Shaper (XPS) and TruNatomy were used twice for the instrumentation of simulated curved canals in plastic blocks. The instrumentation was performed according to the manufacturer's instructions at body temperature. Surface roughness was evaluated, using a profilometer, before instrumentation and twice after the instrumentation. Instruments were, then, subjected to a cyclic fatigue test to evaluate the time to failure. Differences were assessed using ANOVA and post hoc tests (α = 0.05). The XPS instruments showed significantly higher values of roughness compared with TruNatomy at every stage, especially after the second use (p < 0.008). Reciprocating instruments showed superior cyclic fatigue resistance compared with novel rotary instruments (p < 0.05). TruNatomy showed minimal surface roughness, and XPS exhibited significantly higher surface roughness.
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Affiliation(s)
- Balić Merima
- School of Dental Medicine, University of Zagreb, Zagreb, Croatia
| | - Bago Ivona
- Department of Endodontics and Restorative Dentistry, School of Dental Medicine, University of Zagreb, Zagreb, Croatia
| | | | - Plotino Gianluca
- Private Practice, Grande Plotino & Torsello - Studio di Odontoiatria, Rome, Italy
| | - Anić Ivica
- Department of Endodontics and Restorative Dentistry, School of Dental Medicine, University of Zagreb, Zagreb, Croatia
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de Oliveira HF, da Silva Júnior IF, Teixeira LCG, Camilo NG, de Almeida Decurcio D, Guedes OA, de Araújo Estrela CR. Influence of different agitation techniques on bacterial reduction in curved root canals. AUST ENDOD J 2022; 49:104-110. [PMID: 35488771 DOI: 10.1111/aej.12623] [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: 09/22/2021] [Revised: 02/18/2022] [Accepted: 04/04/2022] [Indexed: 11/30/2022]
Abstract
The aim of this study was to evaluate the influence of agitation techniques on bacterial reduction in curved root canals. Eighty human mandibular molars were prepared, inoculated with Enterococcus faecalis and incubated at 37°C for 60 days. Then, specimens were randomly separated into two test groups (n = 36) and two control groups (n = 04) according to agitation technique: Passive ultrasonic irrigation (PUI, Irrisonic) and XP-endo Finisher (XPF). Microbial samples were collected before and after instrumentation and after final agitation using sterile paper points. Bacterial growth was analysed by turbidity of culture medium and UV spectrophotometry. The Wilcoxon rank test was used for the paired analysis, while the Mann-Whitney U-test was used for the non-paired analysis. The samples collected after final agitation were significantly different between test groups (p < 0.05). Bacterial reduction was greater in the PUI than in the XPF (p < 0.05) group. The irrigant agitation provided significant bacterial reduction. The use of the PUI showed better results.
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Affiliation(s)
| | | | | | - Naira Geovana Camilo
- Department of Endodontics, School of Dentistry, Evangelical University of Goiás, Goiás, Brazil
| | | | - Orlando Aguirre Guedes
- Department of Endodontics, School of Dentistry, Evangelical University of Goiás, Goiás, Brazil
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Ahmad MZ, Sadaf D, MacBain MM, Merdad KA. Effect of mode of rotation on apical extrusion of debris with four different single-file endodontic instrumentation systems: Systematic review and meta-analysis. AUST ENDOD J 2022; 48:202-218. [PMID: 35255170 DOI: 10.1111/aej.12612] [Citation(s) in RCA: 1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 12/20/2021] [Accepted: 02/13/2022] [Indexed: 01/19/2023]
Abstract
This systematic review and meta-analysis evaluated whether single-file endodontic instrumentation systems with the reciprocating type of motion are responsible for more debris extrusion than single-file endodontic instrumentation systems with the full rotational type of motion. Electronic and manual searches were performed following the recommendations of Preferred Reporting Items for Systematic Reviews and Meta-Analysis - PRISMA. We included studies comparing rotary (Neoniti and/ OneShape) versus reciprocating (WaveOne and/ Reciproc) systems. We evaluated the quality of studies and performed statistical analysis using R-Project software. Eight studies of high quality were included to perform the meta-analysis. Subgroup analysis was also done. The overall risk of bias was too low. In conclusion, single-file reciprocating systems tend to generate more extrusion of debris than single-file rotary systems.
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Affiliation(s)
- Muhammad Zubair Ahmad
- Restorative Dentistry Department, College of Dentistry in Ar Rass, Qassim University, Ar Rass, Saudi Arabia.,Nuffield Department of Primary Care Health Sciences, Centre for Evidence-Based Medicine, University of Oxford, Oxford, UK
| | - Durre Sadaf
- Nuffield Department of Primary Care Health Sciences, Centre for Evidence-Based Medicine, University of Oxford, Oxford, UK
| | - Marcy McCall MacBain
- Nuffield Department of Primary Care Health Sciences, Centre for Evidence-Based Medicine, University of Oxford, Oxford, UK
| | - Khalid A Merdad
- Department of Endodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
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Shantiaee Y, Zandi B, Shojaeian S, Mortezapour N, Soltaninejad F. Micro-computed tomography assessment of dentinal microcracks after the preparation of curved root canals with rotary and reciprocal systems. Dent Med Probl 2022; 58:515-523. [PMID: 34994116 DOI: 10.17219/dmp/134149] [Citation(s) in RCA: 1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 02/28/2021] [Accepted: 03/09/2021] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Root canal preparation with nickel-titanium (NiTi) instruments may lead to the formation of microcracks in the root canal wall. Vertical root fractures may initiate from dentinal cracks, and eventually necessitate tooth extraction. OBJECTIVES This study aimed to assess the effect of the instrumentation of curved root canals of mandibular molars with the 2Shape (2S) sequential rotary, EdgeFile® X1 (EFX1) reciprocating and NeoNiTi (NN) rotational single-file systems on the formation of dentinal microcracks with the use of micro-computed tomography (micro-CT). MATERIAL AND METHODS Thirty curved mandibular molar root canals were instrumented with the 2S, EFX1 and NN systems (10 in each group). The teeth underwent micro-CT before and after instrumentation. Next, the pre-instrumentation and post-instrumentation cross-sectional images were evaluated and compared for the detection of dentinal microcracks. The number of microcracks in each group was calculated and reported as percentage. The data was analyzed using the McNemar's test with the IBM SPSS Statistics for Windows software, v. 25.0 (α = 0.05). RESULTS Out of the 29,280 cross-sectional images evaluated in this study, 11.5% showed dentinal microcracks (n = 3,362). On the post-instrumentation images, the frequency percentage of microcracks was 12.0% (n = 585) in the 2S group, 8.8% (n = 402) in the EFX1 group and 13.3% (n = 694) in the NN group. All of the microcracks detected on the post-instrumentation images were also present on the preinstrumentation images and no new microcracks were formed after root canal instrumentation with the aforementioned systems. CONCLUSIONS Root canal instrumentation with the 2S, EFX1 and NN systems did not result in the formation of new dentinal microcracks.
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Affiliation(s)
- Yazdan Shantiaee
- Department of Endodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Babak Zandi
- Department of Endodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shiva Shojaeian
- Department of Endodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Niloofar Mortezapour
- Department of Endodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fatemeh Soltaninejad
- Department of Endodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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de Carvalho KKT, Petean IBF, Silva-Sousa AC, de Camargo RV, Mazzi-Chaves JF, Silva-Sousa YTC, Sousa-Neto MD. Impact of several NiTi-thermally treated instrumentation systems on biomechanical preparation of curved root canals in extracted mandibular molars. Int Endod J 2022; 55:124-136. [PMID: 34687053 DOI: 10.1111/iej.13649] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 10/19/2021] [Indexed: 11/26/2022]
Abstract
AIM To evaluate the shaping ability of several heat-treated nickel-titanium systems used to prepare root canals with moderate and severe curvature, in extracted mandibular molars, by micro-computed tomography, considering their variation in kinematics and design. METHODOLOGY Curved-mesial roots of mandibular molars were randomly selected and assigned into 4 balanced experimental groups (n = 10), established by determining homogeneous 3D parameters of volume and surface area: R-Motion (RM) size 30, 0.04 taper (RM; FKG Dentaire), Reciproc Blue (RCB) size 25, 0.08 taper (RCB; VDW GmbH), HyFlex CM (HFX) size 30, 0.04 taper (HFX; Coltène Whaledent) and XP-endo Shaper size (XPS) 30, 0.01 taper (XPS; FKG Dentaire). The volume of irrigation was established at 10 ml of 2.5% NaOCl. Throughout the entire root canal preparation procedures, the samples were fixed in a vice submerged in a container with water monitored at 37°C. Dimensional cross-sectional measures of area, perimeter, roundness, major/minor diameters and 3-dimensional (volume, surface area, structure model index - SMI) parameters as well as the smallest dentine thickness along the cervical and middle root thirds were evaluated by micro-CT. Data were analysed using analysis of variance and post hoc Tukey tests (α = 5%). RESULTS Reciproc Blue and XPS had significantly greater mean increases in cross-sectional area measurements, only in the middle third, when compared with RM and HFX (p < .05). RM, RCB and XPS had a similar increase in measurements of length and width of perimeter (p > .05), and HFX had significantly lower mean increases in perimeter values only when compared with XPS (p < .05). RCB and XPS had significantly greater mean increases in volume when compared with RM and HFX (p < .05). RM had a significantly lower difference in SMI after preparation, compared with RCB, HFX and XPS (p < .05). The smallest dentine thickness was observed after the use of RCB (p < .05), in the danger and safety zones. CONCLUSIONS XP-endo Shaper and RM had a shaping ability similar to that of instruments with larger tapers, achieved with less dentine removal in danger and safe zones in curved-mesial canals of extracted molar teeth treated on a laboratory benchtop.
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Affiliation(s)
| | - Igor Bassi Ferreira Petean
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Alice Corrêa Silva-Sousa
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Rafael Verardino de Camargo
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Jardel Francisco Mazzi-Chaves
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | | | - Manoel Damião Sousa-Neto
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
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Medeiros TCD, Lima COD, Barbosa AFA, Augusto CM, Bruno AMV, Lopes RT, Amoroso-Silva PA, Marceliano-Alves MF. Shaping ability of reciprocating and rotary systems in oval-shaped root canals: a microcomputed tomography study. Acta Odontol Latinoam 2021; 34:282-288. [PMID: 35088816 DOI: 10.54589/aol.34/3/282] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Accepted: 12/01/2021] [Indexed: 06/14/2023]
Abstract
This study compared the shaping ability of single-file reciprocating (WaveOne Gold) and multifile rotary (Mtwo) systems on mandibular oval-shaped canine root canals, using microcomputed tomography (micro-CT). Thirty mandibular canines were scanned by micro-CT and assigned to one of two groups (n=15) according to the system used for root canal preparation: WaveOne Gold or Mtwo. After preparation, the teeth were rescanned, and the percentage of untouched canal area, apical transportation and centering ability were analyzed. The data was evaluated using Kruskal and Mann- Whitney tests (p<0.05). No difference was found in percentage of unprepared canal area between groups in the entire root canal or the apical third, or in centering ability (p>0.05). WaveOne gold had less canal transportation than MTwo at the 5 mm section (p<0.05). WOG and Mtwo systems presented similar shaping ability and centering ability in oval-shaped canals. However, WOG presented less transportation than Mtwo at 5 mm from the apex.
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Affiliation(s)
- Thamires C de Medeiros
- Universidade Federal do Rio de Janeiro, Departamento de Endodontia, Rio de Janeiro, Brasil
| | - Carolina O de Lima
- Universidade do Estado do Rio de Janeiro, Departamento de Endodontia, Rio de Janeiro, Brasil
| | - Ana Flávia A Barbosa
- Universidade do Estado do Rio de Janeiro, Departamento de Endodontia, Rio de Janeiro, Brasil
| | - Carla M Augusto
- Universidade do Estado do Rio de Janeiro, Departamento de Endodontia, Rio de Janeiro, Brasil
| | - Adília Maria V Bruno
- Universidade Federal do Rio de Janeiro, Departamento de Endodontia, Rio de Janeiro, Brasil
| | - Ricardo T Lopes
- Universidade Federal do Rio de Janeiro, Programa de Engenharia Nuclear, Rio de Janeiro, Brasil
| | - Pablo A Amoroso-Silva
- Universidade Iguaçu, Departamento de Endodontia e Pesquisa Odontológica, Nova Iguaçu, Rio de Janeiro, Brasil
| | - Marília Fv Marceliano-Alves
- Universidade Iguaçu, Departamento de Endodontia e Pesquisa Odontológica, Nova Iguaçu, Rio de Janeiro, Brasil.
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50
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Simdar N, Bashardoust N, Jahangir M. Comparison of the cleaning efficacy of XP-endo shaper and Mtwo rotary files in oval-shaped canals. Dent Res J (Isfahan) 2021; 18:107. [PMID: 35265290 PMCID: PMC8804547] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 01/19/2021] [Accepted: 05/03/2021] [Indexed: 11/01/2022] Open
Abstract
Background Cleaning and shaping of root canals are essential steps for the success of endodontic therapy. This study compared two types of rotary files in oval-shaped root canals: XP-endo shaper (FKG, La Chaux-de- Fonds, Switzerland) and Mtwo (VDW, Germany, Munich) with regard to cleaning ability and canal preparation. Mtwo is a system of nickel-titanium files with S-shaped cross-sectional design and XP-endo shaper can change its shape according to the temperature. Materials and Methods This in vitro study was performed on 16 pairs of freshly extracted contralateral mandibular premolars with a single oval-shaped canal that were selected and divided into two groups according to the root canal instrumentation technique: XP-endo shaper and Mtwo. Then, each root cut into three coronal, middle and apical sections and processed for histologic evaluation of canal wall planning and the presence of debris. Sections were evaluated by using AutoCAD 2017 software. Statistical analysis was used to compare between both the groups using repeated measures multivariate analysis of variance with Bonferroni correction for post hoc comparison and independent sample t-tests. The level of statistical significance was set at P < 0.05. Results With a statistically significant difference in the middle third, untouched area and area with debris in XP-endo shaper group were smaller (respectively P = 0.013 and P = 0.011). Despite the percentage difference between groups, there was not a statistically significant difference in other sections. Conclusion Statistically in the middle section of the oval-shaped canals, the XP-endo shaper performs better than the Mtwo rotary files.
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Affiliation(s)
- Narges Simdar
- Department of Endodontics, Dental Sciences Research Center, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran
| | - Nazanin Bashardoust
- Department of Oral and Maxillofacial Pathology, Dental Sciences Research Center, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran
| | - Majid Jahangir
- Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran,Address for correspondence: Dr. Majid Jahangir, Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran. E-mail:
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