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Baasch A, Campello AF, Rodrigues RCV, Alves FRF, Voigt DD, Mdala I, Perez R, Brasil SC, Rôças IN, Siqueira JF. Effects of the irrigation needle design on root canal disinfection and cleaning. J Endod 2024:S0099-2399(24)00401-1. [PMID: 39029891 DOI: 10.1016/j.joen.2024.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 06/19/2024] [Accepted: 07/09/2024] [Indexed: 07/21/2024]
Abstract
INTRODUCTION This ex vivo study evaluated the disinfecting and cleaning effects of root canal preparation using NaOCl irrigation with three different needle designs. METHODS Mesial roots from extracted mandibular molars with Vertucci class II configuration were anatomically matched based on micro-computed tomography (micro-CT) analyses and distributed into three groups (n=18/group). The canals were contaminated with a mixed bacterial culture for 30 days and then subjected to preparation using 2.5% NaOCl irrigation with open-ended flat needle (3 mm short of the working length - WL), closed-ended side-vented irrigation needle (1 mm short of the WL) or a closed-ended plastic needle with two lateral outlets (TruNatomy) (1 mm short of the WL). Bacteriological samples were taken from the canals before (S1) and after preparation (S2). After another micro-CT scan, the roots were sectioned and samples were also taken from the apical canal segment (S3). Bacterial reduction was assessed by quantitative real-time polymerase chain reaction (qPCR). The amount of accumulated hard tissue debris was evaluated by micro-CT. RESULTS A substantial reduction in bacterial counts was observed in all three groups when comparing S1 with S2 (99.95%, 98.93%, and 98.90% in the open-ended, closed-ended, and TruNatomy needle groups, respectively) (P < 0.01). No significant differences were observed between groups for bacterial reduction in the full and apical canal (P > 0.05). There were no intergroup differences in the amount of accumulated hard tissue debris either (P > 0.05). The open-ended needle group showed significantly more specimens with qPCR negative results for bacteria in S3 than TruNatomy (P < 0.05). CONCLUSION When used up to an appropriate insertion depth, the three needle types result in similar antibacterial and cleaning performance, provided variables such as needle size and irrigant type, volume and flow rate are controlled. Exclusive analysis of the apical segment, including the isthmus, revealed that the open-ended needle yielded more cases negative for bacteria.
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Affiliation(s)
- Alessandra Baasch
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, RJ, Brazil
| | - Andrea F Campello
- Department of Dental Research, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil
| | - Renata C V Rodrigues
- Department of Endodontics, Faculty of Dentistry, Veiga de Almeida University (UVA), Rio de Janeiro, RJ, Brazil
| | - Flávio R F Alves
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, RJ, Brazil; Department of Dental Research, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil.
| | - Danielle D Voigt
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, RJ, Brazil
| | - Ibrahimu Mdala
- Department of General Practice, University of Oslo, Norway
| | - Renata Perez
- Department of Endodontics, North of Minas United Faculty, Ipatinga, MG, Brazil
| | - Sabrina C Brasil
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, RJ, Brazil
| | - Isabela N Rôças
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, RJ, Brazil; Department of Dental Research, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil
| | - José F Siqueira
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, RJ, Brazil; Department of Dental Research, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil
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Falcão NPDS, Marceliano-Alves MF, Tavares SJO, Amoroso-Silva P, Neves ADA, Bastos LF, Lopes RT, Dantas WCF, Galhardi MPW, Marceliano EFV, Gomes CC. Shaping Ability of TRUShape and XP-endo Shaper in C-Shaped Canals Using 3D-Printed Replicas: A Micro-CT Study. Eur J Dent 2024; 18:544-550. [PMID: 37729930 PMCID: PMC11132770 DOI: 10.1055/s-0043-1772568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2023] Open
Abstract
OBJECTIVE This study compared the shaping ability of TRUShape and XP-endo Shaper systems on C-shaped root canals replicas using microcomputed tomography (micro-CT). MATERIAL AND METHODS Thirty three-dimensional replicas based on a mandibular second molar classified as C1 type I C-shaped canal were randomly divided into two groups (n = 15): TRUShape (G.TRU) and XP-endo Shaper (G.XP) and instrumented with each system according to the manufacturer's instructions. Changes in volume and surface and the unprepared area of the root canal were measured by scanning on micro-CT before and after instrumentation. RESULTS The unprepared areas were 39% in the G.TRU and 43% in the G.XP group with no significant difference between them (p > 0.05), but both the tested systems left a high percentage of unprepared root canal walls of C-shaped root canals. CONCLUSION TRUShape and XP-endo Shaper showed a high rate of unprepared areas with similar results after C-shaped root canals replicas for root canal preparation.
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Affiliation(s)
- Natália Pereira da Silva Falcão
- Department of Dentistry, Health Institute of Nova Friburgo (PPGO-ISNF), Fluminense Federal University (UFF), Nova Friburgo, RJ, Brazil
| | | | - Sandro Junio Oliveira Tavares
- Department of Dentistry, Health Institute of Nova Friburgo (PPGO-ISNF), Fluminense Federal University (UFF), Nova Friburgo, RJ, Brazil
| | - Pablo Amoroso-Silva
- Department of Dentistry, University of Grande Rio (UNIGRANRIO), Duque de Caxias, RJ, Brazil
| | - Aline de Almeida Neves
- Department of Pediatric Dentistry and Orthodontics, Rio de Janeiro Federal University, Rio de Janeiro, RJ, Brazil
| | - Luan Ferreira Bastos
- Department of Nuclear Energy, Rio de Janeiro Federal University, Rio de Janeiro, RJ, Brazil
| | - Ricardo Tadeu Lopes
- Department of Nuclear Energy, Rio de Janeiro Federal University, Rio de Janeiro, RJ, Brazil
| | | | | | | | - Cinthya Cristina Gomes
- Department of Endodontics, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil
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Liu H, Shen Y. Endodontic Retreatment of a Mandibular Second Molar With a C-shaped Root Canal Configuration: A Case Report. Cureus 2024; 16:e52812. [PMID: 38389597 PMCID: PMC10883750 DOI: 10.7759/cureus.52812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/23/2024] [Indexed: 02/24/2024] Open
Abstract
Root canal retreatment in mandibular second molars with C-shaped root canal configurations presents notable challenges. This article presents a case of successful root canal retreatment in a mandibular second molar exhibiting this complex configuration. Achieving a successful endodontic outcome in such cases necessitates a comprehensive understanding of the unique root canal anatomy. Moreover, the employment of advanced instruments and techniques is crucial to effectively address the intricacies of the C-shaped root canal system.
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Affiliation(s)
- He Liu
- Division of Endodontics, Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, Vancouver, CAN
| | - Ya Shen
- Division of Endodontics, Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, Vancouver, CAN
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Marceliano-Alves MF, Amoroso-Silva P, Alves FRF, Soimu G, Provenzano JC, Campello AF, Duarte ML, Moreno JO, Sierra-Cristancho A, Calle JT, Rôças IN, Siqueira JF. Multipopulation evaluation of the internal morphology of mandibular first premolars from different South American countries. A micro-computed tomography study. Arch Oral Biol 2023; 156:105809. [PMID: 37832245 DOI: 10.1016/j.archoralbio.2023.105809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 09/14/2023] [Accepted: 09/24/2023] [Indexed: 10/15/2023]
Abstract
OBJECTIVE To evaluate and compare several anatomical parameters of mandibular first premolars from individuals from different Latin American countries using micro-computed tomography. DESIGN Five hundred extracted mandibular first premolars from Brazilian, Argentinian, Chilean, Colombian, and Ecuadorian individuals were scanned using micro-computed tomography (n = 100 teeth/country). Root canal configurations were classified according to established parameters. Analyses also included: canal volume and surface area, structure model index, distances from the apical foramen to the root apex or the cementoenamel junction, major/minor apical canal diameters, canal orifice shape, and prevalence of ramifications. RESULTS A single root was the most common anatomy in all countries (range, 97%-100%). Vertucci's type-I canal was the most frequent configuration (range, 36%-66%), followed by C-shaped and type-V canals. The oval-shaped canal orifice was the most predominant in all countries (range, 34%-58%), followed by the circular shape (range, 16%-47%). C-shaped canals occurred in all subpopulations (range, 14%-26%), always associated with radicular grooves. Ranges for canal ramifications were as follows: accessory canals, 36%-73%; lateral canals, 4%-12%; and apical delta, 4%-14% of the teeth. Many anatomic parameters differed significantly between countries (P < .05). CONCLUSIONS Vertucci's types-I and -V, and C-shaped canals were the most prevalent configurations in the subpopulations investigated. Accessory canals and several complex anatomies were found, with some significantly different frequencies between countries.
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Affiliation(s)
| | - Pablo Amoroso-Silva
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, RJ, Brazil
| | - Flávio R F Alves
- Department of Endodontics, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil; Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, RJ, Brazil.
| | - Giuliana Soimu
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, RJ, Brazil
| | - José C Provenzano
- Department of Endodontics, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil; Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, RJ, Brazil
| | - Andrea F Campello
- Department of Endodontics, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil; Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, RJ, Brazil
| | | | - Jaime O Moreno
- Dental School, Santo Tomás University, Bucaramanga, Colombia
| | | | | | - Isabela N Rôças
- Department of Endodontics, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil; Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, RJ, Brazil
| | - José F Siqueira
- Department of Endodontics, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil; Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, RJ, Brazil
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Molina MAV, Silva GO, Candemil AP, Camargo RVD, Pauwels R, Jacobs R, Sousa-Neto MD, Mazzi-Chaves JF. Evaluation of 2- and 3-dimensional anatomic parameters of C-shaped root canals with cone beam computed tomography, microcomputed tomography, and nanocomputed tomography. Oral Surg Oral Med Oral Pathol Oral Radiol 2023; 136:759-768. [PMID: 37580223 DOI: 10.1016/j.oooo.2023.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 06/29/2023] [Accepted: 07/04/2023] [Indexed: 08/16/2023]
Abstract
OBJECTIVE The objective of this study was to evaluate 2-dimensional (2D) and 3D morphometric parameters of C-shaped root canals on cone beam computed tomography (CBCT) and microcomputed tomography (microCT) images using nanocomputed tomography (nanoCT) as the reference standard. STUDY DESIGN Sixty mandibular molars with C-shaped canals were individually scanned using nanoCT and microCT. Cone beam computed tomography acquisitions were then performed with 4 CBCT systems, using high and standard resolutions. The 2D parameters of roundness and major and minor diameters were obtained in the cross sections of the root canals at 1, 2, and 3 mm from the root apex. The 3D parameters of surface area, volume, and structure model index were measured considering the entire extension of the root canals. Absolute error (AE) in measurement was calculated against the nanoCT values. Data were statistically analyzed with the Shapiro-Wilk test and analysis of variance (α = 0.05). RESULTS No significant differences in AE were discovered for the 2D parameters among microCT and the CBCT scans. The AE values for the 3D parameters of volume and surface area were significantly smaller in microCT compared to all CBCT units (P < .05). Significantly lower AE values for surface area were observed in high resolution compared to standard resolution for all CBCT units (P < .05). Structure model index did not differ significantly among microCT and all CBCT protocols. CONCLUSIONS Cone beam computed tomography images showed accuracy for evaluating 2D parameters and over- and underestimation for 3D parameters.
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Affiliation(s)
- Miguel Angel Ventura Molina
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Sao Paulo, Brazil
| | - Giovane Oliveira Silva
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Sao Paulo, Brazil
| | - Amanda Pelegrin Candemil
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Sao Paulo, Brazil
| | - Rafael Verardino de Camargo
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Sao Paulo, Brazil
| | - Ruben Pauwels
- OMFS IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, University of Leuven, University Hospitals Leuven, Leuven, Belgium; Department of Radiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand; Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Reinhilde Jacobs
- OMFS IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, University of Leuven, University Hospitals Leuven, Leuven, Belgium; Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Manoel Damião Sousa-Neto
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Sao Paulo, Brazil
| | - Jardel Francisco Mazzi-Chaves
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Sao Paulo, Brazil.
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Candemil AP, Mazzi-Chaves JF, Oliveira ML, Ambrosano GB, Vasconcelos KF, Pauwels R, Jacobs R, Sousa-Neto MD. Assessment of the root filling volume in C-shaped root canal on cone-beam CT and micro-CT in relation to nano-CT. Clin Oral Investig 2023; 27:6413-6420. [PMID: 37704914 DOI: 10.1007/s00784-023-05244-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 09/05/2023] [Indexed: 09/15/2023]
Abstract
AIM To assess the observed volume of filled C-shaped root canals from different CBCT and micro-CT having nano-CT as a reference. MATERIALS AND METHODS Twelve extracted mandibular molars with C-shaped root canals were endodontically treated using Reciproc Blue R25 (VDW GMBH, Munich, Germany) in a reciprocating system and filled with gutta-percha (Dentsply Maillefer) and AH Plus sealer (Dentsply DeTrey, Konstanz, Germany). CBCT scans were performed using 3 units-3D Accuitomo 170 (J. Morita, Kyoto, Japan), ProMax 3D Max (Planmeca, Helsinki, Finland), and NewTom VGi EVO (Cefla QR, Verona, Italy)-at two resolution modes: standard and high. Micro-CT and nano-CT scans were also obtained. The volume of all filled C-shaped root canals was obtained using CTAn software (Bruker, Kontich, Belgium), and the blooming artifact, in relation to nano-CT volume, was calculated. The data were evaluated by the Bland-Altman plots and ANOVA two-way for repeated measures (α = 0.05). RESULTS All CBCT units and micro-CT showed significantly larger observed volume of root canal filling when compared to nano-CT. The blooming artifact of root canal filling in standard resolution was significantly larger than that in high resolution (p < 0.05) in all CBCT units. CONCLUSIONS Endodontic filling material with AH Plus sealer causes blooming artifacts in CBCT units and micro-CT. CLINICAL RELEVANCE Considering the anatomical complexity of C-shaped root canals and the challenges associated with endodontic treatment, CBCT is frequently recommended for follow-up evaluations. However, the presence of endodontic filling material can result in blooming artifacts that may potentially impact the accurate diagnosis of endodontic complications.
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Affiliation(s)
- Amanda Pelegrin Candemil
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Av. do Café-Subsetor Oeste-11 (N-11), Ribeirão Preto, São Paulo, 14040-904, Brazil.
| | - Jardel Francisco Mazzi-Chaves
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Av. do Café-Subsetor Oeste-11 (N-11), Ribeirão Preto, São Paulo, 14040-904, Brazil
| | - Matheus Lima Oliveira
- Division of Oral Radiology, Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil
| | - Guilherme Bovi Ambrosano
- Department of Statistical Genetics, Luiz de Queiroz College of Agriculture, University of São Paulo, São Paulo, Brazil
| | | | - Ruben Pauwels
- Department of Radiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Aarhus Institute of Advanced Studies, Aarhus University, Aarhus, Denmark
| | - Reinhilde Jacobs
- OMFS IMPATH Research Group, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
- Department Dental Medicine, Karolinska Institute, Stockholm, Sweden
| | - Manoel Damião Sousa-Neto
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Av. do Café-Subsetor Oeste-11 (N-11), Ribeirão Preto, São Paulo, 14040-904, Brazil
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Yoo YJ, Hwang J, Park SH, Hwang J, Cho S, Kim SY. A novel analysis of the formation and resorption changes in dental hard tissue using longitudinal in vivo micro computed tomography. Dent Mater J 2023; 42:708-716. [PMID: 37612095 DOI: 10.4012/dmj.2023-008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
This study was to investigate the new analysis manner of dental hard tissue change using in vivo micro-computed tomography (CT) in rat. Scanning, registration, analyzing, and presenting method to track longitudinal in vivo micro-CT data on dental hard tissues were validated in murine models: formative, dentin thickness after direct pulp capping with mineral trioxide aggregate; resorptive, development of apical bone rarefaction in apical periodontitis model. Serial in vivo micro-CT scans were analyzed through rigid-registration, active-contouring, deformable-registration, and motion vector-based quantitative analyses. The rate and direction of hard tissue formation after direct pulp capping was datafied by tracing coordinate shift of fiducial points on pulp chamber outline in formative model. The development of apical periodontitis could be monitored with voxel counts, and quantitatively analyzed in terms of lesion size, bone loss, and mineral density in resorptive model. This study supports the application of longitudinal in vivo micro-CT for resorptive- and formative-phase specific monitoring of dental hard tissues.
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Affiliation(s)
- Yeon-Jee Yoo
- Department of Conservative Dentistry and Dental Research Institute, School of Dentistry, Seoul National University
| | - Joonil Hwang
- Department of Nuclear and Quantum Engineering, KAIST
| | - So-Hyun Park
- Department of Conservative Dentistry and Dental Research Institute, School of Dentistry, Seoul National University
| | - Jaehong Hwang
- Department of Nuclear and Quantum Engineering, KAIST
| | | | - Sun-Young Kim
- Department of Conservative Dentistry and Dental Research Institute, School of Dentistry, Seoul National University
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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] [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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Fontanezi BS, Bronzato JD, Mohara NT, de-Jesus-Soares A, Frozoni M. Assessment of the root surface temperature during the use of intracanal agitation systems: In vitro study. Braz Dent J 2023; 34:44-53. [PMID: 37909641 PMCID: PMC10642267 DOI: 10.1590/0103-6440202305517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 08/01/2023] [Indexed: 11/03/2023] Open
Abstract
This study aimed to evaluate the temperature changes that the different methods of agitation of irrigants promote on the external dental root surface. Nine extracted human lower premolars were standardized by cone-beam computed tomography and used. The root canal was instrumented with a Reciproc 40.06 file. Temperature measurement was performed using K-type thermocouple sensors attached to the middle, cervical, and apical thirds of the teeth. The teeth had their roots immersed in distilled water at 37ºC, which were distributed into 3 experimental groups according to the mechanical agitation methods to be studied. US Group (n=3), Irrisonic Ultrasonic Tip activated through ultrasound; EC Group (n=3), Easyclean Tip coupled to a contra-angle low-speed handpiece; XP Group (n=3), XP-endo Finisher file coupled to an endodontic electrical motor. Temperature measurements were performed simultaneously with agitation and irrigation of intracanal irrigants. Statistical analysis was performed using SPSS software with a significance level of 5%. For multiple comparisons, the Tukey test was used. The association between mechanical agitation methods and root third was statistically significant. Regarding the temperatures recorded on the external surface of the roots, the ultrasonic tip was significantly higher than the XP-endo Finisher file and the Easyclean tip, which did not differ from each other. Regarding the ultrasonic tip, the external temperature in the middle third (39.46ºC) of the root was significantly lower than in the cervical (40.41ºC) and apical third (40.53ºC). None of the agitation methods of irrigants studied presented heating above 47ºC, and their use is safe for periodontal tissues.
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Affiliation(s)
- Barbara S Fontanezi
- Department of Endodontics, São Leopoldo Mandic School of Dentistry, Campinas, SP, Brazil
| | - Juliana D Bronzato
- Department of Restorative Dentistry, Division of Endodontics, Piracicaba Dental School, State University of Campinas, Piracicaba, SP, Brazil
| | - Nelson T Mohara
- Department of Endodontics, São Leopoldo Mandic School of Dentistry, Campinas, SP, Brazil
| | | | - Marcos Frozoni
- Department of Endodontics, São Leopoldo Mandic School of Dentistry, Campinas, SP, Brazil
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Romeiro K, Brasil SC, Souza TM, Gominho LF, Pérez AR, Perez R, Alves FRF, Rôças IN, Siqueira JF. Influence of brushing motions on the shaping of oval canals by rotary and reciprocating instruments. Clin Oral Investig 2023:10.1007/s00784-023-05022-1. [PMID: 37097436 DOI: 10.1007/s00784-023-05022-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 04/08/2023] [Indexed: 04/26/2023]
Abstract
OBJECTIVE The effects of brushing on shaping with three different instruments were assessed in oval canals. DESIGN Mandibular incisors were assigned to 6 groups (n = 12/group) according to the system, each one with or without brushing: Reciproc Blue, VDW.Rotate, and Race EVO. Micro-computed tomography was performed before and after preparation. RESULTS Brushing strokes caused no increase in canal volume, surface area, and structure model index independently of the system (p > 0.05), except for RaCe EVO in the full canal surface area (p < 0.05). Brushing did not increase the prepared areas (p > 0.05), except for Reciproc in the apical canal (p < 0.05). Reciproc with no brushing exhibited less pericervical dentin than with brushing (p < 0.05), while RaCe EVO with brushing resulted in less remaining dentin (p < 0.05). CONCLUSIONS The brushing motion had no effects on the overall shaping performance of the 3 instruments tested. An exception was the increase in prepared surface area in the apical canal segment when the Reciproc instrument was used with brushing strokes.
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Affiliation(s)
- Kaline Romeiro
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rua Professor José de Souza Herdy, 1160, Duque de Caxias, Rio de Janeiro, RJ, 25071-202, Brazil
| | - Sabrina C Brasil
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rua Professor José de Souza Herdy, 1160, Duque de Caxias, Rio de Janeiro, RJ, 25071-202, Brazil
| | - Thaís M Souza
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rua Professor José de Souza Herdy, 1160, Duque de Caxias, Rio de Janeiro, RJ, 25071-202, Brazil
| | - Luciana F Gominho
- Department of Restorative Dentistry, Federal University of Paraíba (UFPB), Paraíba, João Pessoa, PB, Brazil
| | - Alejandro R Pérez
- Department of Endodontics, University Rey Juan Carlos, Madrid, Spain
| | | | - Flávio R F Alves
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rua Professor José de Souza Herdy, 1160, Duque de Caxias, Rio de Janeiro, RJ, 25071-202, Brazil.
| | - Isabela N Rôças
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rua Professor José de Souza Herdy, 1160, Duque de Caxias, Rio de Janeiro, RJ, 25071-202, Brazil
| | - José F Siqueira
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rua Professor José de Souza Herdy, 1160, Duque de Caxias, Rio de Janeiro, RJ, 25071-202, Brazil
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11
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Castro-Perez MA, Nabeshima CK, Silva EJNL, Valdivia JE, Gavini G, Machado MEDL. Optimization of automated preparation of long oval-shaped root canals using supplementary instrumentation. Braz Dent J 2023; 34:35-40. [PMID: 37194855 DOI: 10.1590/0103-6440202305231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 01/24/2023] [Indexed: 05/18/2023] Open
Abstract
This study compared the preparation of long oval-shaped root canals using WaveOne Gold and XP-endo Shaper systems, both supplemented or not with manual instrumentation. Twenty-four long oval-shaped canals of mandibular incisors were distributed into two groups according to the instrumentation: WaveOne Gold Primary or XP-endo Shaper systems. All root canals were manually instrumented with a size 25 K-file after automated preparation. The specimens were scanned by using a micro-CT device (17.42 µm) before and after automated preparation and manual instrumentation. The increased surface of the root canal and the percentage of untouched areas were assessed. Both WaveOne Gold and XP-endo Shaper systems increased the root canal surface and had similar untouched areas (p>0.05). Supplementary instrumentation increased the surface of the root canal and decreased the untouched walls (p<0.05). WaveOne Gold and XP-endo Shaper systems provided a similar preparation of long oval-shaped canals and manual instrumentation improved their preparation.
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Affiliation(s)
| | - Cleber Keiti Nabeshima
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | | | - José Edgar Valdivia
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Giulio Gavini
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, São Paulo, Brazil
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12
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Alfirdous RA, Alquiria TA, Jacinto RC, Martinho FC. A modified dentin infection model with Fluorescent Lipopolysaccharide and
LPS
sampling technique to compare
XP‐Endo
finisher and passive ultrasonic irrigation. Int Endod J 2022; 55:1081-1090. [DOI: 10.1111/iej.13804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 07/24/2022] [Accepted: 07/25/2022] [Indexed: 11/30/2022]
Affiliation(s)
- R. A. Alfirdous
- Division of Endodontics, Department of Advanced Oral Sciences and Therapeutics University of Maryland School of Dentistry Baltimore Maryland USA
- Prince Abdulrahman Advanced Dental Institute Riyadh Kingdom of Saudi Arabia
| | - T. A. Alquiria
- Division of Endodontics, Department of Advanced Oral Sciences and Therapeutics University of Maryland School of Dentistry Baltimore Maryland USA
- Prince Abdulrahman Advanced Dental Institute Riyadh Kingdom of Saudi Arabia
| | - R. C. Jacinto
- Division of Endodontics, Department of preventive and restorative dentistry School of Dentistry, Aracatuba São Paulo SP Brazil
| | - F. C. Martinho
- Division of Endodontics, Department of Advanced Oral Sciences and Therapeutics University of Maryland School of Dentistry Baltimore Maryland USA
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13
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Recent Progress on the Applications of Nanomaterials and Nano-Characterization Techniques in Endodontics: A Review. MATERIALS 2022; 15:ma15155109. [PMID: 35897542 PMCID: PMC9331596 DOI: 10.3390/ma15155109] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 07/19/2022] [Accepted: 07/20/2022] [Indexed: 02/06/2023]
Abstract
The impact of nano-based technologies in endodontics for the identification and treatment of various dental infections is showing fast progress. Studies show that nanoparticles could serve as useful agents with many beneficial results and continue to be promising in the field of endodontics. To ensure progress and improvements on novel nanomaterials in relation to their physicochemical and biological properties, nano-identification methods for the detection and evaluation of diseases need to be further highlighted. This study aims to review the current technological progress and recent research outcomes as well as possible prospective applications of nano-based technologies in endodontics. A comprehensive literature survey has been carried out on the utilizations of nanomaterials and nano-characterization techniques in endodontics. The current status and recent applications in endodontics are discussed with illustrative examples. The results have shown that the progress and improved accuracy of nano-identification techniques enabled a better characterization, evaluation and selection of appropriate treatment plans for endodontics-related diseases. The results have been inspiring for further clinical investigations. Nano-endodontics is still a developing field with a strong potential for revolutions of novel materials and techniques in the diagnosis and treatment of dental diseases. Further improvements in nanoparticles properties will pave the way for the development of many beneficial endodontic therapeutic agents. The future looks encouraging for sustainable products and testing methods for clinical endodontic applications.
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14
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Aminoshariae A, Azarpazhooh A, Diogenes AR, Fouad AF, Glickman GN, Kishen A, Letra AM, Levin L, Roda RS, Setzer FC, Tay FR, Hargreaves KM. Insights into the April 2021 Issue of the Journal of Endodontics. J Endod 2021; 47:555-557. [PMID: 33662436 DOI: 10.1016/j.joen.2021.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
| | - Amir Azarpazhooh
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Anibal R Diogenes
- University of Texas Health San Antonio School of Dentistry, San Antonio, Texas
| | | | | | - Anil Kishen
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Ariadne M Letra
- University of Texas Health Science Center at Houston School of Dentistry, Houston, Texas
| | | | | | - Frank C Setzer
- Diplomate, American Board of Endodontics; Assistant Professor, Clinic & Predoctoral Program and Director, Department of Endodontics, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Franklin R Tay
- The Dental College of Georgia, Augusta University, Augusta, Georgia
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15
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Copper-Calcium Hydroxide and Permanent Electrophoretic Current for Treatment of Apical Periodontitis. MATERIALS 2021; 14:ma14030678. [PMID: 33540551 PMCID: PMC7867200 DOI: 10.3390/ma14030678] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 01/26/2021] [Accepted: 01/29/2021] [Indexed: 12/19/2022]
Abstract
Endodontic failure has been and continues to be a problem for endodontics-specialists. Complicated anatomy, numerous foramens, and accessory canals are an environment for microorganisms to infect the teeth. The purpose of the present work was to evaluate the regeneration of copper–calcium hydroxide (Cupral)-endodontically treated teeth diagnosed with apical periodontitis using an electrophoresis technique. In total, 132 patients, aging from 19 to 65 years old, underwent endodontic treatment mono- and multi-radicular teeth, with complicated canals from January 2019 to June 2020. The patients were divided into two groups: (i) the control group—which included 54 patients (n = 62 teeth) receiving endodontic paste (Calcipast + 1) and, as final filling, the AH-PlusTM cement—and (ii) the Cupral group, which included 78 patients (n = 80 teeth) receiving Cupral paste plus the electrophoretic current and, as final filling, the Atacamit-alkaline cement. The clinical cases were periodically observed along an 18-month follow-up period via radiography. Data were expressed as focal size of the lesions (mean ± standard error (SEM) of all the radiographic outcomes) observed in each group at each interval point. Statistical analysis was performed using the Student’s t-test that allowed us to compare the control and Cupral groups; the statistical significance was set at p < 0.05 and p < 0.01, where the latter was highly significant. Before treatments, the focal sizes were 4.8 mm and 4.95 mm for control and Cupral-treated groups, respectively. After 6 months, the mean focal sizes were 3.9 mm and 2.14 mm for the control and Cupral groups, respectively. After 12 months, in the control group, the mean focal size was measured at 2.8 mm, while, in Cupral group, the lesion size decreased down to 0.31 mm and a highly dynamic regeneration of the destructive focal-bone occurred. After 18 months, the lesions were further significantly reduced in the control group (mean values of 2.62 mm), while they were barely detectable in the Cupral group (0.2 mm). In conclusion, we provide initial evidence that the Cupral-electrophoresis methodology is effective in treating destructive periodontitis of teeth with problematic canals up to 18 months, thus allowing teeth preservation.
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