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Rodrigues RCV, Porpino MTM, Dessaune-Neto N, Antunes HS, Pinto KMMC, Provenzano JC, Pires FR, Siqueira JF, Armada L. Correlation Between Proinflammatory Cytokine Expression and Clinical Data in Apical Granuloma. J Endod 2024; 50:499-505. [PMID: 38311115 DOI: 10.1016/j.joen.2024.01.018] [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: 08/14/2023] [Revised: 01/16/2024] [Accepted: 01/22/2024] [Indexed: 02/06/2024]
Abstract
INTRODUCTION This study was intended to evaluate the expression of inflammatory cytokines commonly secreted by CD4+ T cells (IL-2, IL-5, IL-17, TGF-β, TNF-α, and IFN-γ) in apical granulomas and correlate with the clinical conditions and time elapsed since root canal treatment. METHODS Eighteen biopsy specimens obtained by periradicular surgery of teeth with post-treatment apical periodontitis and diagnosed as apical granuloma were available from the oral pathology laboratory. Silanized slides containing paraffin sections were used for immunohistochemical reactions. Images were analyzed by using an optical microscopy and each slide was subdivided into 5 fields at high magnification. RESULTS IFN-γ and TGF-β were the cytokines with the highest expression levels. There were statistically significant differences when comparing IL-2 and IFN-γ (P < .05), and IL-2 and TGF-β (P < .05). Comparison between the detected cytokines and clinical data and time of treatment demonstrated significant correlation (P < .05) between lower expression of IL-2 and the presence of painful symptoms, absence of sinus tract, and treatments performed more than 4 years before. It was also possible to observe a significant correlation between lower expression of IL-5 and treatments performed less than 4 years before (P < .05). CONCLUSION IFN-γ and TGF-β were highly expressed in apical granulomas. However, only IL-2 and IL-5 levels were associated with clinical data and time since previous root canal treatment.
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Affiliation(s)
- Renata C V Rodrigues
- Faculty of Dentistry and Postgraduate Program in Dentistry, Estácio de Sá University, Rio de Janeiro, Rio de Janeiro, Brazil; Faculty of Dentistry, Veiga de Almeida University, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Mariana T M Porpino
- Faculty of Dentistry and Postgraduate Program in Dentistry, Estácio de Sá University, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Nilton Dessaune-Neto
- Faculty of Dentistry and Postgraduate Program in Dentistry, Estácio de Sá University, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Henrique S Antunes
- Faculty of Dentistry and Postgraduate Program in Dentistry, Estácio de Sá University, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Karina M M C Pinto
- Faculty of Dentistry and Postgraduate Program in Dentistry, Estácio de Sá University, Rio de Janeiro, Rio de Janeiro, Brazil
| | - José C Provenzano
- Faculty of Dentistry, Experimental Research Department, Iguaçu University, Nova Iguaçu, Rio de Janeiro, Brazil
| | - Fábio R Pires
- Faculty of Dentistry and Postgraduate Program in Dentistry, Estácio de Sá University, Rio de Janeiro, Rio de Janeiro, Brazil
| | - José F Siqueira
- Faculty of Dentistry, Experimental Research Department, Iguaçu University, Nova Iguaçu, Rio de Janeiro, Brazil
| | - Luciana Armada
- Faculty of Dentistry and Postgraduate Program in Dentistry, Estácio de Sá University, Rio de Janeiro, Rio de Janeiro, Brazil; Faculty of Dentistry, Experimental Research Department, Iguaçu University, Nova Iguaçu, Rio de Janeiro, Brazil.
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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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Guedes IG, Rodrigues RCV, Marceliano-Alves MF, Alves FRF, Rôças IN, Júnior JFS. Shaping ability of new reciprocating or rotary instruments with two cross-sectional designs: an ex vivo study. Int Endod J 2022; 55:1385-1393. [PMID: 36121392 DOI: 10.1111/iej.13834] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 09/14/2022] [Accepted: 09/15/2022] [Indexed: 11/28/2022]
Abstract
AIM This study compared the shaping ability of four new reciprocating and rotary nickel-titanium instruments, with triangular or S-shaped cross-section, in the mesial canals of mandibular molars using micro-computed tomographic (micro-CT) evaluation. METHODOLOGY Twenty-four extracted mandibular molars with Vertucci's class IV configuration in the mesial root were selected for this study. The teeth were matched in fours according to anatomic similarities as revealed by micro-CT and then distributed into four groups of 12 mesial canals each according to the instrumentation technique: Reciproc Blue, R-motion, VDW.Rotate, and RaCe EVO. The final apical size of instrumentation was 30/.04 for 3 systems and 25/08 for the Reciproc Blue instrument. Micro-CT scans were taken before and after preparation to evaluate the canal volume, area and unprepared surface areas, as well as the centering ability, and the canal:root width ratio. RESULTS Preparation with all systems significantly increased the volume and area of the canals (P < .05). There were no significant differences between groups regarding the amount of unprepared areas in both the apical and full canal lengths (P > .05). Variation in the centre of gravity showed no significant difference between groups either (P > .05). The canal:root width ratio at levels 0 and 4 mm apically to the coronal canal opening was significantly increased by all systems (P < .01), with no significant differences between groups (P > .05). The canal width never exceeded 40% of the root width. CONCLUSIONS Reciprocating or rotary instruments, with a triangular or an S-shaped cross-section, performed equally in shaping Vertucci's class IV mesial canals of mandibular molars.
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Affiliation(s)
- Isabela G Guedes
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, RJ, Brazil
| | - Renata C V Rodrigues
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, RJ, Brazil.,Faculty of Dentistry, Veiga de Almeida University, 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
| | - 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 S Júnior
- 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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Neves MAS, Provenzano JC, Fonseca SCL, Rodrigues RCV, Gonçalves LS, Siqueira JF, Rôças IN. Disinfection and outcome of root canal treatment using single-file or multifile systems and Ca(OH)2 medication. Braz Dent J 2020; 31:493-498. [PMID: 33146332 DOI: 10.1590/0103-6440202003245] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 09/25/2020] [Indexed: 11/22/2022] Open
Abstract
This clinical study reports on the antibacterial effects and outcome of endodontic treatment using either a single-file or a multifile system, associated with calcium hydroxide interappointment medication. The root canals of single-rooted teeth with apical periodontitis were treated by using either Reciproc or BioRaCe instrument systems, 2.5% NaOCl irrigation, and calcium hydroxide medication. Bacteriological samples taken before preparation and immediately before obturation were evaluated for total bacterial counts by quantitative real-time polymerase chain reaction (qPCR). Patients were followed up and the treatment outcome was assessed by clinical and radiographic criteria. Decreasing lesions were classified as success in a lenient criterion or failure in a rigid one. Bacteria were detected in all initial samples (47 cases) and were significantly reduced after treatment in both groups (p<0.001). In the Reciproc and BioRaCe groups, 7/25 (28%) and 11/22 (50%) root canals yielded negative qPCR results before obturation, respectively (p>0.05). Quantitative bacterial reduction was similar between groups (p>0.05). The success rate in the BioRaCe group was 95.5% and 77% in the loose and rigid criterion, respectively. In the Reciproc group, corresponding figures were 88% and 76%. Differences in outcome were not significant (p>0.05). No diseased case showed negative qPCR results for bacteria. A difference of >1 Log10 counts was observed between healed and diseased cases. Root canal treatments of teeth with apical periodontitis using a single-file or a multifile system for preparation, associated with NaOCl irrigation and calcium hydroxide interappointment medication, showed similar antibacterial effectiveness and success rate.
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Affiliation(s)
- Mônica A S Neves
- Department of Endodontics, School of Dentistry, Universidade Estácio de Sá, Rio de Janeiro, RJ, Brazil
| | - José C Provenzano
- Department of Endodontics, School of Dentistry, Universidade Estácio de Sá, Rio de Janeiro, RJ, Brazil.,Department of Endodontics, School of Dentistry, UNIG - Universidade Iguaçu, Nova Iguaçu, RJ, Brazil
| | - Simone C L Fonseca
- Department of Endodontics, School of Dentistry, UNIG - Universidade Iguaçu, Nova Iguaçu, RJ, Brazil
| | - Renata C V Rodrigues
- Department of Endodontics, School of Dentistry, UVA - Universidade Veiga de Almeida University, Rio de Janeiro, RJ, Brazil
| | - Lucio S Gonçalves
- Department of Endodontics, School of Dentistry, Universidade Estácio de Sá, Rio de Janeiro, RJ, Brazil
| | - José F Siqueira
- Department of Endodontics, School of Dentistry, UNIG - Universidade Iguaçu, Nova Iguaçu, RJ, Brazil
| | - Isabela N Rôças
- Department of Endodontics, School of Dentistry, UNIG - Universidade Iguaçu, Nova Iguaçu, RJ, Brazil
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Rodrigues RCV, Antunes HS, Neves MAS, Siqueira JF, Rôças IN. Infection Control in Retreatment Cases: In Vivo Antibacterial Effects of 2 Instrumentation Systems. J Endod 2015; 41:1600-5. [PMID: 26234543 DOI: 10.1016/j.joen.2015.06.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [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: 04/26/2015] [Revised: 06/10/2015] [Accepted: 06/11/2015] [Indexed: 10/23/2022]
Abstract
INTRODUCTION This in vivo study compared the antibacterial effects of 2 instrumentation systems in root canal-treated teeth with apical periodontitis. METHODS Forty-eight teeth with a single root and a single canal showing post-treatment apical periodontitis were selected for this study. For retreatment, teeth were randomly divided into 2 groups according to the instrumentation system used: Self-Adjusting File (SAF; ReDent-Nova, Ra'anana, Israel) and Twisted File Adaptive (TFA; SybronEndo, Orange, CA). In both groups, 2.5% sodium hypochlorite was the irrigant. Bacteriological samples were taken before (S1) and after chemomechanical preparation (S2). In the TFA group, passive ultrasonic irrigation (PUI) was performed after instrumentation, and samples were also taken after this supplementary step (S2b). DNA was extracted from the clinical samples and subjected to quantitative real-time polymerase chain reaction to evaluate the levels of total bacteria, streptococci, and Enterococcus faecalis. Statistical analyses from quantitative real-time polymerase chain reaction data were performed within groups using the Wilcoxon matched pairs test and between groups using the Mann-Whitney U test and the Fisher exact test with the significance level set at P < .05. RESULTS Bacteria were detected in S1 samples from 43 teeth, which were then included in the antibacterial experiment. Both SAF and TFA instrumentation protocols showed a highly significant intracanal bacterial reduction (P < .001). Intergroup quantitative comparisons disclosed no significant differences between TFA with or without PUI and SAF (P > .05). PUI did not result in significant improvement in disinfection (P > .05). CONCLUSIONS Both instrumentation systems/treatment protocols were highly effective in significantly reducing the intracanal bacterial counts. No significant difference was observed between the 2 systems in disinfecting the canals of teeth with post-treatment apical periodontitis.
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Affiliation(s)
- Renata C V Rodrigues
- Molecular Microbiology Laboratory, Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, Rio de Janeiro, Brazil.
| | - Henrique S Antunes
- Molecular Microbiology Laboratory, Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, Rio de Janeiro, Brazil; Department of Endodontics, Faculty of Dentistry, Grande Rio University, Duque de Caxias, Rio de Janeiro, Brazil
| | - Mônica A S Neves
- Molecular Microbiology Laboratory, Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, Rio de Janeiro, Brazil
| | - José F Siqueira
- Molecular Microbiology Laboratory, Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Isabela N Rôças
- Molecular Microbiology Laboratory, Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, Rio de Janeiro, Brazil
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Rodrigues RCV, Lopes HP, Elias CN, Amaral G, Vieira VTL, De Martin AS. Influence of different manufacturing methods on the cyclic fatigue of rotary nickel-titanium endodontic instruments. J Endod 2011; 37:1553-7. [PMID: 22000462 DOI: 10.1016/j.joen.2011.08.011] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Revised: 07/18/2011] [Accepted: 08/02/2011] [Indexed: 02/04/2023]
Abstract
INTRODUCTION The aim of this study was to evaluate, by static and dynamic cyclic fatigue tests, the number of cycles to fracture (NCF) 2 types of rotary NiTi instruments: Twisted File (SybronEndo, Orange, CA), which is manufactured by a proprietary twisting process, and RaCe files (FKG Dentaire, La Chaux-de-Fonds, Switzerland), which are manufactured by grinding. METHODS Twenty Twisted Files (TFs) and 20 RaCe files #25/.006 taper instruments were allowed to rotate freely in an artificial curved canal at 310 rpm in a static or a dynamic model until fracture occurred. RESULTS Measurements of the fractured fragments showed that fracture occurred at the point of maximum flexure in the midpoint of the curved segment. The NCF was significantly lower for RaCe instruments compared with TFs. The NCF was also lower for instruments subjected to the static test compared with the dynamic model in both groups. Scanning electron microscopic analysis revealed ductile morphologic characteristics on the fractured surfaces of all instruments and no plastic deformation in their helical shafts. CONCLUSIONS Rotary NiTi endodontic instruments manufactured by twisting present greater resistance to cyclic fatigue compared with instruments manufactured by grinding. The fracture mode observed in all instruments was of the ductile type.
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Affiliation(s)
- Renata C V Rodrigues
- Department of Endodontics, São Leopoldo Mandic, Dental Research Center, Campinas, São Paulo, Brazil
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