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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 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] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [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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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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Pacheco-Yanes J, Gazzaneo I, Campello AF, Marceliano-Alves MF, Estrela C, Bueno MR, Lopes RT, Rôças IN, Alves FRF, Siqueira JF. Planned Apical Preparation Using Cone-Beam Computed Tomographic Measures: A Micro-Computed Tomographic Proof of Concept in Human Cadavers. J Endod 2021; 48:280-286. [PMID: 34871632 DOI: 10.1016/j.joen.2021.11.016] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 10/12/2021] [Accepted: 11/29/2021] [Indexed: 10/19/2022]
Abstract
INTRODUCTION This study assessed the amount of unprepared surface areas at the apical 4-mm segment of the root canal after a planned preparation based on cone-beam computed tomography (CBCT) measurements. METHODS Eighteen posterior mandible segments were obtained from cadavers and scanned using CBCT and micro-computed tomographic (micro-CT) imaging. CBCT images were used to measure the largest initial canal diameter from 29 root canals of premolars at 1, 2, 3, and 4 mm short of the apical foramen. Each measurement was used to select a master apical instrument with size/taper that was 1 diameter larger to prepare the apical 4 mm of each particular root canal. A post-preparation micro-CT scan was obtained, and the unprepared canal areas were calculated. RESULTS A very high amount of surface areas over the apical 4 mm of the root canal was included in the final preparation (mean >90%). The unprepared areas ranged from as low as 3.7% to a maximum of 14.6% (mean and median, 9.2% and 9.1%, respectively). CONCLUSIONS The proposed planned apical root canal preparation resulted in optimized root canal shaping with a substantial amount of prepared surface areas. The protocol used also resulted in a conservative canal enlargement using final instruments that were 1 size larger than the initial largest canal diameter.
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Affiliation(s)
- Juan Pacheco-Yanes
- Faculty of Dentistry, Department of Dental Research, Iguaçu University (UNIG), Nova Iguaçu, Rio de Janeiro, Brazil
| | - Isbelia Gazzaneo
- Faculty of Dentistry, Department of Dental Research, Iguaçu University (UNIG), Nova Iguaçu, Rio de Janeiro, Brazil
| | - Andrea F Campello
- Faculty of Dentistry, Department of Dental Research, Iguaçu University (UNIG), Nova Iguaçu, Rio de Janeiro, Brazil
| | - Marília F Marceliano-Alves
- Faculty of Dentistry, Department of Dental Research, Iguaçu University (UNIG), Nova Iguaçu, Rio de Janeiro, Brazil
| | - Carlos Estrela
- School of Dentistry, Department of Endodontics, Federal University of Goiás, Goiânia, Brazil
| | | | - Ricardo T Lopes
- Department of Nuclear Energy, Rio de Janeiro Federal University, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Isabela N Rôças
- Faculty of Dentistry, Department of Dental Research, 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
| | - Flávio R F Alves
- Faculty of Dentistry, Department of Dental Research, 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
- Faculty of Dentistry, Department of Dental Research, 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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Artaza L, F Campello A, Soimu G, Alves FRF, Rôças IN, Siqueira JF. Clinical and radiographic outcome of the root canal treatment of infected teeth with associated sinus tract: A retrospective study. AUST ENDOD J 2021; 47:599-607. [PMID: 33991021 DOI: 10.1111/aej.12526] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 12/10/2020] [Revised: 02/20/2021] [Accepted: 04/22/2021] [Indexed: 12/01/2022]
Abstract
This retrospective study evaluated the outcome of the endodontic treatment/retreatment of teeth with intraoral sinus tracts. Seventy-two teeth from 70 individuals were included. One operator treated all teeth over about 20 years. Time for the sinus tract to heal was recorded. Treatment outcome was evaluated after at least 1 year and classified as healed, healing or diseased. The overall healed rate of periradicular lesions was 73.6% (74.1% for treatment and 72.2% for retreatment). In 6 (8.3%) teeth, lesions were healing. Thirteen teeth (18.1%) exhibited persistent disease. In 68/72 (94.4%) cases, the sinus tract healed in less than 1 month. No preoperative/intraoperative variable affected the outcome (P > 0.05). Missing restorations had a negative impact (P < 0.05). Healing of both the sinus tract quickly after treatment and the periradicular lesion later were usually achieved. Closure of the sinus tract in the first month was a good predictor of lesion healing.
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Affiliation(s)
- Liliana Artaza
- Department of Endodontics, University of Salvador (USAL-AOA), Buenos Aires, Argentina
| | - Andrea F Campello
- Department of Endodontics and Dental Research, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil
| | - Giuliana Soimu
- Department of Endodontics, Maimonides University (UMAI), Buenos Aires, Argentina
| | - Flávio R F Alves
- Department of Endodontics and Dental Research, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil.,Department of Endodontics, Grande Rio University (UNIGRANRIO), Duque de Caxias, RJ, Brazil
| | - Isabela N Rôças
- Department of Endodontics and Dental Research, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil.,Department of Endodontics, Grande Rio University (UNIGRANRIO), Duque de Caxias, RJ, Brazil
| | - José F Siqueira
- Department of Endodontics and Dental Research, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil.,Department of Endodontics, Grande Rio University (UNIGRANRIO), Duque de Caxias, RJ, Brazil
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Campello AF, Marceliano-Alves MF, Provenzano JC, Loyola SC, Siqueira JF, Machado AG, Machado AL, Lopes RT, Paiva MM, Alves FRF. Accuracy of Microcomputed Tomography in Detecting Dentinal Cracks: A Correlative Study with Scanning Electron and Operative Microscopy. Scanning 2021; 2021:5571123. [PMID: 34104287 PMCID: PMC8143888 DOI: 10.1155/2021/5571123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 05/03/2021] [Indexed: 05/13/2023]
Abstract
The aim of the study was to evaluate the accuracy of microcomputed tomography (mCT) to detect dentinal cracks when compared with scanning electron microscopy (SEM) and operating microscopy (OM). Different conditions of pixel size (10 or 17 μm), sample moisture (dry/moist), and transillumination (with/without) were evaluated. Additionally, the influence of the dentinal defect width on its detection was analyzed. The root canals of human mandibular incisors were prepared with the Reciproc R40 instrument (VDW, Munich, Germany). The roots were sectioned 5 and 10 mm from the apex, and mCT scans of middle and apical segments were performed at two pixel sizes: 10 μm and 17 μm, under dry and moist conditions (groups: 10dry, 10moist, 17dry, and 17moist). The operating microscope was used with and without transillumination (groups: OMTrans and OM). Findings showed that accuracy was moderate for the 10dry, 10moist, and OMTrans groups, poor for OM and very poor for 17dry and 17moist. The thickness of the dentin crack significantly influenced its detection by mCT using the resolution of 10 μm in both dry and wet conditions (P = .002), 17 μm in the dry condition (P = .002), and by the operating microscope using transillumination (P = .009). Some cracks visualized in SEM were not detected by mCT and an operating microscope. Not only the mCT resolution but also the sample moisture condition and the dentinal crack width can significantly influence its detection.
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Affiliation(s)
| | | | | | - Simone C. Loyola
- Faculty of Dentistry, Iguaçu University, Nova Iguaçu, RJ, Brazil
| | - José F. Siqueira
- Faculty of Dentistry, Iguaçu University, Nova Iguaçu, RJ, Brazil
- Department of Endodontics, Grande Rio University (UNIGRANRIO), Duque de Caxias, RJ, Brazil
| | - André G. Machado
- Faculty of Dentistry, Iguaçu University, Nova Iguaçu, RJ, Brazil
| | - André L. Machado
- Faculty of Dentistry, Iguaçu University, Nova Iguaçu, RJ, Brazil
| | - Ricardo T. Lopes
- Department of Nuclear Energy, Rio de Janeiro Federal University, Rio de Janeiro, RJ, Brazil
| | | | - Flávio R. F. Alves
- Faculty of Dentistry, Iguaçu University, Nova Iguaçu, RJ, Brazil
- Department of Endodontics, Grande Rio University (UNIGRANRIO), Duque de Caxias, RJ, Brazil
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Salas H, Vieira GCS, Palomino I, Valero J, Pacheco-Yanes J, Campello AF, Pérez AR. Outcome of endodontic treatment with chlorhexidine gluconate as main irrigant: A case series. AUST ENDOD J 2020; 46:307-314. [PMID: 32154646 DOI: 10.1111/aej.12401] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/16/2020] [Indexed: 11/27/2022]
Abstract
This study evaluated the overall endodontic therapy success using 0.12% or 2% chlorhexidine gluconate as main irrigant. Seventy-two teeth diagnosed as vital, necrotic or previously treated teeth with apical periodontitis that were consecutively treated by orthograde therapy. All cases were followed clinically and radiographically for at least 1-year period. Success was established in teeth without signs or adverse clinical symptoms and complete or incomplete radiographic healing. Failure was determined in teeth with any sign or adverse clinical symptoms and a new, unchanged or enlarged radiographic periapical lesion. The data were analysed using chi-square and Fischer's exact tests. The overall success rate for teeth undergoing vital pulp was 84.6%, 76.2% as for the necrotic teeth and 84% for the retreatment cases. No significant differences were observed between groups (P > 0.05). Cases treated with CHX as main irrigant showed a high overall endodontic therapy success rate.
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Affiliation(s)
- Hair Salas
- School of Dentistry of the Catholic University of Santa Maria, Arequipa, Perú
| | - Gaya C S Vieira
- Department of Endodontics and Dental Research, Iguaçu University (UNIG), Nova Iguaçu, Brazil
| | - Ivo Palomino
- School of Dentistry of the Catholic University of Santa Maria, Arequipa, Perú
| | - Javier Valero
- School of Dentistry of the Catholic University of Santa Maria, Arequipa, Perú
| | - Juan Pacheco-Yanes
- Post-graduation Program in Dentistry, Estácio de Sá University, Rio de Janeiro, Brazil
| | - Andrea F Campello
- Department of Endodontics and Dental Research, Iguaçu University (UNIG), Nova Iguaçu, Brazil
| | - Alejandro R Pérez
- Department of Endodontics and Dental Research, Iguaçu University (UNIG), Nova Iguaçu, Brazil
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Campello AF, Marceliano-Alves MF, Siqueira JF, Marques FV, Guedes FR, Lopes RT, Alvarenga FO, Alves FR. Determination of the Initial Apical Canal Diameter by the First File to Bind or Cone-beam Computed Tomographic Measurements Using Micro-computed Tomography as the Gold Standard: An Ex Vivo Study in Human Cadavers. J Endod 2019; 45:619-622. [DOI: 10.1016/j.joen.2019.01.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 01/30/2019] [Accepted: 01/31/2019] [Indexed: 11/24/2022]
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Campello AF, Almeida BM, Franzoni MA, Alves FRF, Marceliano-Alves MF, Rôças IN, Siqueira JF, Provenzano JC. Influence of solvent and a supplementary step with a finishing instrument on filling material removal from canals connected by an isthmus. Int Endod J 2018; 52:716-724. [PMID: 30481389 DOI: 10.1111/iej.13047] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [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: 06/24/2018] [Accepted: 11/21/2018] [Indexed: 11/27/2022]
Abstract
AIM To evaluate the effectiveness of a solvent (eucalyptol) in improving filling material removal from canals connected by isthmuses, and the additional cleaning effect of a finishing instrument. METHODOLOGY The mesial canals from 32 mandibular molars (Vertucci's type II morphology) were instrumented and filled with the single-cone technique using Reciproc R25 gutta-percha points (VDW, Munich, Germany) combined with Sealer 26 (Dentsply, Petrópolis, RJ, Brazil). Each root was then subjected to retreatment using the Mtwo instrument system (VDW), with or without a solvent (n = 16 per group). The volume of filling material in the canals was assessed by micro-computed tomographic (micro-CT) scans taken before and after retreatment. Canals with remnants of filling material received a supplementary procedure with the XP-endo Finisher R instrument (FKG Dentaire, La Chaux-de-Fonds, Switzerland), with or without eucalyptol, and another micro-CT scan was taken. All retreatment procedures were performed inside a cabinet under a controlled temperature (37 °C). Filling material removal was evaluated in the 5-mm apical canal system for the canal+isthmus space or the isthmus alone. Statistical analyses were performed to compare the removal of filling material with and without eucalyptol, and after a supplementary approach with XP-endo Finisher R. The level of significance was set at 5% for all statistical tests (P < 0.05). RESULTS The amount of filling material removed from the canal+isthmus with Mtwo instruments was 83.2% when no solvent was used and 83.8% using the solvent (P > 0.05). When the isthmus area was evaluated separately, most specimens were associated with a reduction in the filling material, with no significant difference between the groups with or without using a solvent (P > 0.05). The supplementary step with XP-endo Finisher R significantly improved removal of filling material from both canal and isthmus area (P < 0.05), regardless of the use of a solvent (P > 0.05). CONCLUSION The use of eucalyptol did not improve filling material removal from Vertucci's type II molar mesial canals and isthmuses. XP-endo Finisher R significantly enhanced removal of filling material from the canals and isthmuses.
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Affiliation(s)
- A F Campello
- Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, RJ, Brazil
| | - B M Almeida
- Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, RJ, Brazil
| | - M A Franzoni
- Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, RJ, Brazil
| | - F R F Alves
- Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, RJ, Brazil
| | - M F Marceliano-Alves
- Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, RJ, Brazil
| | - I N Rôças
- Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, RJ, Brazil
| | - J F Siqueira
- Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, RJ, Brazil
| | - J C Provenzano
- Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, RJ, Brazil
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