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Nagarajan V, Ahamed AS, Sreekrishnapillai B, Rajaraman G, Elangovan SK, Guptha RV. Comparative Evaluation of Volume and Homogeneity of Obturation with Four Different Obturation Systems Using Micro-Computed Tomography: An In vitro Study. JOURNAL OF PHARMACY AND BIOALLIED SCIENCES 2024; 16:S1726-S1730. [PMID: 38882816 PMCID: PMC11174270 DOI: 10.4103/jpbs.jpbs_1137_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/04/2023] [Accepted: 12/05/2023] [Indexed: 06/18/2024] Open
Abstract
Aim To evaluate and compare volume and homogeneity of the three different root canal obturation systems. Materials and Methods Single-rooted premolar (n = 24) teeth samples were selected, and crowns were removed for standardization. Four groups are divided randomly as (n = 6), namely: For group I (single-cone gutta-percha obturation), group II (Beefill 2 in 1 obturation), group III (GuttaCore obturation), group IV (GuttaFlow bioseal obturation) and the root canal were subjected to prepare till X3 (protaper next) and subjected to micro-CT imaging. After completion of obturation, the image was taken by using micro-CT imaging. This is to evaluate the volume of filled obturation material in the canal space and the voided area sections, viz. the apical, middle, coronal, and third sections. Results Group III (GuttaCore obturation) showed the least significant mean of the difference in relation to the volume of the canal obturation (81.148). The least mean significant difference in area of voids in the canal region for apical (0.00133), middle (0.00233), and coronal thirds (0.00533). The most statistically significant difference is in the apical and middle thirds root canal space. Conclusion All the experimental groups showed significant differences in volume and voids in the obturation at three different levels, and the GuttaCore obturation systems occupied more of the volume with less voids in the prepared root canal space.
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Affiliation(s)
- V Nagarajan
- Department of Conservative Dentistry and Endodontics, Government Dental Cuddalore District, Annamalai Nagar, Chidambaram, Tamil Nadu, India
| | - A Shafie Ahamed
- Department of Conservative Dentistry and Endodontics, Government Dental Cuddalore District, Annamalai Nagar, Chidambaram, Tamil Nadu, India
| | - Bhavani Sreekrishnapillai
- Department of Conservative Dentistry and Endodontics, Government Dental Cuddalore District, Annamalai Nagar, Chidambaram, Tamil Nadu, India
| | - G Rajaraman
- Department of Conservative Dentistry and Endodontics, Government Dental Cuddalore District, Annamalai Nagar, Chidambaram, Tamil Nadu, India
| | - Selvendran Kasiswamy Elangovan
- Department of Conservative Dentistry and Endodontics, Karpaga Vinayaga Institute of Dental Sciences, Chengalpet District, Tamil Nadu, India
| | - R Vignesh Guptha
- Department of Pedodontics and Preventive Dentistry, Karpaga Vinayaga Institute of Dental Sciences, Chengalpattu District, Tamil Nadu, India
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Balaji S, Jeevanandan G, Ravindran V, Assiry AA, Vishwanathaiah S, Maganur PC. Comparative evaluation of volumetric changes following rotary and hand files' canal preparation of primary maxillary canine: an in vitro nano-CT analysis. Eur Arch Paediatr Dent 2024; 25:227-235. [PMID: 38472709 DOI: 10.1007/s40368-024-00877-8] [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: 09/16/2023] [Accepted: 01/24/2024] [Indexed: 03/14/2024]
Abstract
PURPOSE To evaluate the volumetric changes of two recently introduced paediatric rotary file systems in comparison with conventional hand file systems in primary maxillary canines using an ultra-high-resolution nano-computed tomography. METHODS This in vitro study was performed in extracted primary maxillary canines based on certain inclusion and exclusion criteria. Samples were prepared, and working length was determined after the pre-operative scan using a high-resolution nano-CT device (SkyScan 2214, Bruker, Kontich, Belgium). A single well-experienced paediatric dentist prepared the canals using three file systems: Kedo-S plus, Kedo-SG blue and hand K-files. All samples were subjected to post-operative scans performed similar to pre-operative scans. Image reconstruction was performed with NRecon software for 3D volumetric visualisation and analysis of the root canals. RESULTS Kedo-SG blue file systems had the highest mean difference in the canal volume (4.05%). Hand K-files had the least difference at (3.71%) of canal volume. Kedo-S plus file system had a moderate mean canal volume difference (3.82%) which is closer to hand K-files. Intergroup comparison between the three groups showed that the mean difference in canal volume was statistically significant between all three file systems (p = 0.000). CONCLUSION Within the limitations of the current study, rotary file systems produced a significant enlargement of canals as compared to hand files. Kedo-SG blue created a uniform preparation of the canal cervico-apically. Kedo-S plus files were prepared more coronally with minimal preparation apically as close to the preparation of hand files. TRIAL REGISTRATION Trial registration number: IHEC/SDC/PEDO-2103/22/651, Date of registration: 2022.
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Affiliation(s)
- S Balaji
- Department of Pediatric and Preventive Dentistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, India
| | - G Jeevanandan
- Department of Pediatric and Preventive Dentistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, India.
| | - V Ravindran
- Department of Pediatric and Preventive Dentistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, India
| | - A A Assiry
- Preventive Dental Science Department, Faculty of Dentistry, Najran University, 1988, Najran, Saudi Arabia
| | - S Vishwanathaiah
- Department of Preventive Dental Sciences, Division of Pediatric Dentistry, College of Dentistry, Jazan University, Jazan, Saudi Arabia.
| | - P C Maganur
- Department of Preventive Dental Sciences, Division of Pediatric Dentistry, College of Dentistry, Jazan University, Jazan, Saudi Arabia
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Amaral RR, Love RM, Braga T, Souza Côrtes MI, Rachid CTCC, Rôças IN, Siqueira JF. Impact of root canal preparation using two single-file systems on the intra-radicular microbiome of teeth with primary apical periodontitis. Clin Oral Investig 2024; 28:139. [PMID: 38332365 PMCID: PMC10853323 DOI: 10.1007/s00784-024-05544-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 02/05/2024] [Indexed: 02/10/2024]
Abstract
OBJECTIVES This study aimed to describe the effects of two single-file systems on the diversity of the endodontic microbiome of teeth with primary asymptomatic apical periodontitis. MATERIALS AND METHODS The root canals from single-rooted teeth with apical periodontitis were prepared using either the Reciproc Blue (RB) or the XP-endo Shaper (XPS) instrument system. The latter was followed by a supplementary step with the XP-endo Finisher (XPF) instrument. For irrigation, 5.25% sodium hypochlorite was used. Root canal samples were taken at the baseline (S1), after preparation (S2), and after the supplementary step (S3). DNA was extracted and subjected to high-throughput sequencing using the MiSeq Illumina platform. RESULTS Samples from 10 teeth from the RB and 7 from the XPS group were subjected to DNA sequencing. Initial samples differed significantly from post-preparation samples in bacterial diversity, with no significant difference when comparing the two instrument systems. The most dominant phyla in S2 were Bacteroidetes, Proteobacteria, Firmicutes, Fusobacteria, and Actinobacteria. The same phyla were found to dominate baseline samples and samples taken after using XPF, but with differences in the ranking of the most dominant ones. At the genus level, the most dominant genera identified after RB instrumentation were Bacteroidaceae [G-1], Fusobacterium, and Staphylococcus, while the most dominant genera after XPS instrumentation were Fusobacterium and Porphyromonas. These genera were also dominant in the initial samples. CONCLUSIONS Both treatment protocols had measurable effects on the root canal microbial diversity, with no significant differences between them. Most of the dominant taxa involved in the primary infection and probably in the aetiology of apical periodontitis were eliminated or substantially reduced. CLINICAL RELEVANCE The most dominant taxa that persisted after instrumentation were Fusobacterium, Porphyromonas, Staphylococcus, and Bacteroidaceae [G-1].
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Affiliation(s)
- Rodrigo Rodrigues Amaral
- College of Medicine and Dentistry, James Cook University, 1/14-88 McGregor Rd, Building D1, 2nd Floor, Campus Smithfield, Smithfield, Cairns, QLD, 4878, Australia.
| | - Robert M Love
- School of Medicine and Dentistry, Griffith University, Gold Coast, Queensland, Australia
| | - Tiago Braga
- School of Medicine and Dentistry, Griffith University, Gold Coast, Queensland, Australia
| | - Maria I Souza Côrtes
- Department of Dentistry, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Caio T C C Rachid
- Laboratory of Biotechnology and Microbial Ecology, Institute of Microbiology Prof. Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Isabela N Rôças
- Department of Dental Research, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil
| | - José F Siqueira
- Department of Dental Research, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil
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Gomes BPFA, Aveiro E, Kishen A. Irrigants and irrigation activation systems in Endodontics. Braz Dent J 2023; 34:1-33. [PMID: 37909632 PMCID: PMC10642269 DOI: 10.1590/0103-6440202305577] [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: 05/31/2023] [Accepted: 06/12/2023] [Indexed: 11/03/2023] Open
Abstract
Root canal infections are typically polymicrobial and involve strong bacterial interactions. The goal of endodontic treatment is to remove infected content from the root canal system to allow the healing of a pre-existing periapical lesion or to prevent infection of the periradicular tissues. Instrumentation alone is not capable of touching all of the root canal walls. Therefore, the irrigation process is an essential step in the endodontic treatment. However, due to the complex anatomy of the root canal system, this cleaning is very challenging. Although syringe and needle irrigation associated with the use of chemical substances is still the most used method, it does not guarantee optimal cleaning of the root canals. As a result, not only alternative irrigating substances but also numerous activation systems - which are technologies that aim to optimize the action of irrigating substances, both chemically and physically - have been developed. This work aimed to review the characteristics of both classic and current alternatives of irrigating substances and irrigation activation systems.
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Affiliation(s)
- Brenda P. F. A. Gomes
- Department of Restorative Dentistry, Division of Endodontics,
Piracicaba Dental School - State University of Campinas, UNICAMP, Brazil
| | - Emelly Aveiro
- Department of Restorative Dentistry, Division of Endodontics,
Piracicaba Dental School - State University of Campinas, UNICAMP, Brazil
| | - Anil Kishen
- Department of Dentistry, University of Toronto, Canada
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Murray PE. Review of guidance for the selection of regenerative endodontics, apexogenesis, apexification, pulpotomy, and other endodontic treatments for immature permanent teeth. Int Endod J 2023; 56 Suppl 2:188-199. [PMID: 35929348 DOI: 10.1111/iej.13809] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/27/2022] [Accepted: 07/28/2022] [Indexed: 11/30/2022]
Abstract
This review guidance is a work in progress because the limitations of regenerative endodontics are still being discovered. The endodontic treatments for immature permanent teeth with a necrotic pulp can vary considerably among endodontic practitioners. Whereas, regenerative endodontic treatments are growing in popularity and are creating ever more complex treatment protocols, involving revascularization and/or autologous platelet-rich plasma and scaffolds to elicit host stem cell de novo tissue formation to reestablish the vitality of immature teeth for the purpose of continuing root maturation. Despite much evolving controversy about their potential benefits, risks, prognosis, and contraindications, this review is aimed to discuss how to ensure that regenerative endodontic treatments are successful, by strictly adhering to case selection criteria, and following precise steps to accomplish and monitor the success of the treatment. A review of the endodontic literature was performed, together with practical observations of the problems and outcomes of performing regenerative endodontic treatments. Traditionally, apexification has long been the treatment of choice provided to immature teeth with a necrotic pulp. Regenerative endodontics may be provided as an alternative to apexification, if the tooth and patient meet all the case selection criteria, and if there are no contraindications. Regenerative endodontics has the unique potential advantage of being able to continue the root development in immature permanent teeth, thereby potentially saving the teeth for the lifetime of the patient. Whereas, conventional endodontic root canal treatment, Cvek partial pulpotomy, apexogenesis, and apexification, should always be provided when these treatments are more likely to benefit the patient because they can be more successful than regenerative endodontics.
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Wang H, Yang X, Zou L, Huang D, Zhou X, Xu J, Gao Y. Shaping outcome of ProTaper NEXT for root canal preparation in mandibular incisors: a micro-CT study. BMC Oral Health 2022; 22:302. [PMID: 35869473 PMCID: PMC9308234 DOI: 10.1186/s12903-022-02335-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 07/13/2022] [Indexed: 11/23/2022] Open
Abstract
Background Relatively high incidence of single canals with oval or round shape were observed in human mandibular incisors. In order to investigate the influence of the root canal morphology on root canal preparation, the shaping outcome of ProTaper NEXT in oval and round canals of mandibular incisors were evaluated by using micro-computed tomography (micro-CT) analysis. Methods This experiment was approved by the School Medical Ethics Committee. The sample size calculation was conducted using G*Power software. Intact mandibular incisors with a single canal were selected. Oval canals (2 < aspect ratio (AR) ≤ 4) and round canals (AR ≤ 2) were pair-matched according to canal length, and assigned to two experimental groups (13 per group). ProTaper NEXT was used for root canal preparation for both groups. Untouched canal wall (UCW), root canal morphological parameters and three-dimensional (3D) dentin thickness were evaluated in the entire root canal and each canal third after micro-CT scanning. Statistical analysis: Data were collected and analyzed with Mann–Whitney test and Friedman test using SPSS statistics software 25 (P < 0.05). Additionally, correlations of UCW area with canal morphological parameters were also investigated. Results After root canal preparation, no significant difference was observed in all analyzed parameters in the apical third between oval and round canal groups (P > 0.05). In the coronal two thirds of the canal, the post-operative structure model index (SMI), form factor and roundness were significantly increased, while the AR was significantly decreased in both groups (P < 0.05). In addition, in the coronal two thirds, significantly more UCW and higher UCWΔ% was observed in oval canal group (P < 0.05). Furthermore, UCW correlated very strongly to canal major diameter (0.924) and initial volume (0.938), and strongly to canal form factor (− 0.724), minor diameter (0.799) and canal area (0.882). Proximal dentin wall was associated with significantly thinner pre-operative dentin thickness and higher amount of dentin removal after root canal preparation in both oval and round canal groups. Conclusions (1) Both types of canals were more conical after root canal preparation, but oval root canals tend to leave more UCW area than round canals in the coronal two thirds of mandibular incisors, which contributes to the challenge for endodontic infection control. (2) Root canal preparation usually results in excessive dentin removal in the proximal dentin wall comparing with buccal and lingual walls in both types of canals of mandibular incisors. Supplementary Information The online version contains supplementary material available at 10.1186/s12903-022-02335-7.
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Paixão S, Rodrigues C, Grenho L, Fernandes MH. Efficacy of sonic and ultrasonic activation during endodontic treatment: a Meta-analysis of in vitro studies. Acta Odontol Scand 2022; 80:588-595. [PMID: 35430959 DOI: 10.1080/00016357.2022.2061591] [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: 11/01/2022]
Abstract
OBJECTIVE To ensure a successful endodontic treatment, it is important to have a proper disinfection of the root canal. The current study compares the root canal cleanliness and smear layer score between sonic and ultrasonic activation. METHOD Systematic literature review was implemented, using 12 databases. All in vitro studies comparing the efficacy of sonic and ultrasonic activation and reporting at least one outcome of interest were included. RESULTS At the apical level, pooling the data in the random-effects model (I2=64%, p = .1) revealed a statistically significant lower smear layer score within the sonic activation group (MD-0.48; 95% CI-0.92, -0.04; p = .03). Furthermore, there was a statistically significant lower push-out bond strength value among the sonic group, in contrast to the ultrasonic group at the middle (MD-0.69; 95% CI-1.13, -0.25; p = .002) and at the apical levels (MD-0.78; 95% CI-1.09, -0.46; p < .0001) of the root canal. CONCLUSIONS Sonic activation accomplished advancement relative to ultrasonic agitation in removing the smear layer, while ultrasonic activation resulted in significant cohesion between the sealers and the dentine tubules, decreasing the vulnerability of apical leakage and tooth fracture.
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Affiliation(s)
- Sara Paixão
- Faculdade de Medicina Dentária, Universidade do Porto, Porto, Portugal
| | - Cláudia Rodrigues
- Faculdade de Medicina Dentária, Universidade do Porto, Porto, Portugal
| | - Liliana Grenho
- Faculdade de Medicina Dentária, Laboratory for Bone Metabolism and Regeneration, U. Porto, Porto, Portugal
- LAQV/REQUIMTE, U. Porto, Porto, Portugal
| | - Maria Helena Fernandes
- Faculdade de Medicina Dentária, Laboratory for Bone Metabolism and Regeneration, U. Porto, Porto, Portugal
- LAQV/REQUIMTE, U. Porto, Porto, Portugal
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De-Deus G, Souza EM, Silva EJNL, Belladonna FG, Simões-Carvalho M, Moreira Cavalcante D, Versiani MA. A critical analysis of research methods and experimental models to study root canal fillings. Int Endod J 2022; 55 Suppl 2:384-445. [PMID: 35226760 DOI: 10.1111/iej.13713] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 02/21/2022] [Accepted: 02/21/2022] [Indexed: 11/28/2022]
Abstract
Canal filling materials and techniques have been one of the most studied topics in Endodontics. A simple search using the mesh term "root canal filling" in PubMed revealed more than 11,000 articles, an impressive number that is much higher than "root canal disinfection" (5,544 articles) or even the popular "root canal preparation" (8,527 articles). The overriding importance attributed to root filling procedures is not merely intuitive. It derived from the appealing relevance given by the appearance of the white lines in common radiographs grounded on retrospective clinical data that had identified the quality of a root filling as one of the major causes of treatment failure (lack of healing). Since the publication of the Washington study, impressive efforts have been made for the release of new materials and techniques, as well as, for the development of a plethora of laboratory methods to assess the quality of root filling procedures. This narrative review aims to address and discuss the most relevant laboratory methods to assess the root canal filling. Since filling quality improvements have not translated into higher success rates, as reported in longitudinal clinical studies, more than to deliver a simple methodology-based review, this paper aims to present an in-depth critical view on the assessment of laboratory methods used to study the filling materials and techniques. Recent data indicate that the long-term dimensional stability/degradation over time of endodontic sealers plays a central role in the treatment outcome. In this context, laboratory methods should be developed focusing on predicting, at least to some degree, the long-term clinical behaviour of root canal fillings, rather than simply ranking different materials or techniques.
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Affiliation(s)
- Gustavo De-Deus
- Department of Endodontics, Fluminense Federal University, Niterói, Rio de Janeiro, Brazil
| | - Erick Miranda Souza
- Department of Dentistry II, Federal University of Maranhão, São Luís, Maranhão
| | - Emmanuel João Nogueira Leal Silva
- Department of Endodontics, Fluminense Federal University, Niterói, Rio de Janeiro, Brazil.,Department of Endodontics, Grande Rio University (UNIGRANRIO), Rio de Janeiro, Brazil
| | | | - Marco Simões-Carvalho
- Department of Endodontics, Fluminense Federal University, Niterói, Rio de Janeiro, Brazil
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Arias A, Peters OA. Present Status and Future Directions - Canal Shaping. Int Endod J 2022; 55 Suppl 3:637-655. [PMID: 35118683 PMCID: PMC9303733 DOI: 10.1111/iej.13698] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 01/30/2022] [Accepted: 02/01/2022] [Indexed: 12/01/2022]
Abstract
This narrative review will focus on the evolution, present and future of engine‐driven root canal preparation. Root canal preparation changed drastically when Walia in 1988 introduced the use of nickel‐titanium (NiTi) alloys in Endodontics. In 2013, five generations of NiTi endodontic instruments had been established based on their metallurgical, mechanical properties and design features. Since then, manufacturers have been introducing further major changes in instrument design and characteristics that have not been translated in new recognized generations of instruments. In general, those changes have demonstrated enhanced instrument properties, but it is not clear yet if all those improvements are directly translated to an improvement in clinical success. This narrative review attempts to address the present status of engine‐driven instruments in terms of both evidence from laboratory‐based studies and clinical data, to identify potential further generations of instruments, and last to anticipate future directions for research and development.
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Affiliation(s)
- A Arias
- School of Dentistry, Complutense University, Madrid, Spain
| | - O A Peters
- School of Dentistry, The University of Queensland, Herston, QLD, Australia
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Pawar AM, Bhardwaj A, Banga KS, Singh G, Kfir A, Luke AM, Dinata V, Wahjuningrun DA. Deficiencies in Root Canal Fillings Subsequent to Adaptive Instrumentation of Oval Canals. BIOLOGY 2021; 10:biology10111074. [PMID: 34827067 PMCID: PMC8615090 DOI: 10.3390/biology10111074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 10/17/2021] [Accepted: 10/18/2021] [Indexed: 11/16/2022]
Abstract
Simple Summary Employing a chemo-mechanical preparation, one of the primary procedural phases in endodontic therapy is carefully removing debris, pulp tissue, and bacteria from the root canal system. The cross-sectional root canal shapes comprise circular, oval, long oval, flattened, or irregular. The frequency of oval root canals in the apical third of human teeth is around 25 to 50%. Motorised endodontic files leave almost 60% of the oval root canal perimeter unaffected by their instrumentation, thus resulting in faulty obturation that is required to prevent reinfection and to restrict the passage of microorganisms and toxins to and from the periapical tissue. Abstract The purpose of this study was to explore the influence of instrumentation and the potential for debris deposition using XP-endo shaper plus (XP-SP) and full-sequence SAF (F-SAF) on the adaption of thermoplastic root canal fillings in oval canals. Following the manufacturer’s instructions, ninety human permanent mandibular incisors with a single oval canal 6 mm from the apex (verified using pre-operative CBCT scanning) were instrumented with XP-SP and F-SAF. Obtura III Max apparatus was used for root canal obturation without the use of a root canal sealer. The roots were then sectioned 6 mm from the apex and examined with a digital stereomicroscope at x25 magnification to assess the root canal fillings. The F-SAF was associated with a significantly higher (p < 0.01) percentage of entire adaptation of the root fillings (76%) compared to the XP-SP (57%). Furthermore, the XP-SP group was also associated with higher (p < 0.01) defective obturation with debris at 17% and with voids at 26%. However, the F-SAF had lower percentages of defective obturations (7% with debris and 17% with voids). The quality of obturation of oval canals instrumented using full-sequence SAF was better.
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Affiliation(s)
- Ajinkya M. Pawar
- Department of Conservative Dentistry and Endodontics, Nair Hospital Dental College, Mumbai 400008, India; (A.M.P.); (K.S.B.)
| | - Anuj Bhardwaj
- Department of Conservative Dentistry and Endodontics, College of Dental Sciences & Hospital, Rau, Indore 453331, India;
| | - Kulvinder S. Banga
- Department of Conservative Dentistry and Endodontics, Nair Hospital Dental College, Mumbai 400008, India; (A.M.P.); (K.S.B.)
| | - Gurdeep Singh
- Department of Adult Restorative Dentistry, Oman Dental College, P.O. Box 835, Mina Al Fahal, Muscat 116, Oman;
| | - Anda Kfir
- Department of Endodontology, The Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv 69978, Israel;
| | - Alexander Maniangat Luke
- Department of Clinical Science, College of Dentistry, Ajman University, Al-Jurf, Ajman 346, United Arab Emirates
- Center of Medical and Bio-Allied Health Sciences Research, Ajman University, Al-Jurf, Ajman 346, United Arab Emirates
- Correspondence: (A.M.L.); (D.A.W.)
| | - Vialyne Dinata
- Department of Conservative Dentistry, Faculty of Dental Medicine, Universitas Airlingga, Surabaya 60132, Indonesia;
| | - Dian Agustin Wahjuningrun
- Department of Conservative Dentistry, Faculty of Dental Medicine, Universitas Airlingga, Surabaya 60132, Indonesia;
- Correspondence: (A.M.L.); (D.A.W.)
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Scope of Preparation of Oval and Long-Oval Root Canals: A Review of the Literature. ScientificWorldJournal 2021; 2021:5330776. [PMID: 34475808 PMCID: PMC8407989 DOI: 10.1155/2021/5330776] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 08/17/2021] [Indexed: 11/18/2022] Open
Abstract
Successful endodontic treatment depends on cleaning and disinfecting the root canals, in order to provide conditions for three-dimensional filling, which should prevent root canal reinfection. However, anatomical complexities pose a challenge during endodontic treatment. The present study was a literature review carried out in the following databases: PubMed, SciELO, and MEDLINE, which were searched for articles published from 2017 to 2021. Micro-CT studies published in English, which analysed the capacity for preparation of oval and long-oval root canals, were included. The following keywords were used: “oval-shaped canals,” “long-oval-shaped canals,” “endodontics,” and “micro-CT.” The aim of this study was to carry out a literature review of micro-CT studies on the scope of the capacity for preparation performed in oval and long-oval root canals with rotary and reciprocating instruments.
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Bhandi S, Mashyakhy M, Abumelha AS, Alkahtany MF, Jamal M, Chohan H, Raj AT, Testarelli L, Reda R, Patil S. Complete Obturation-Cold Lateral Condensation vs. Thermoplastic Techniques: A Systematic Review of Micro-CT Studies. MATERIALS (BASEL, SWITZERLAND) 2021; 14:4013. [PMID: 34300930 PMCID: PMC8304925 DOI: 10.3390/ma14144013] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 07/10/2021] [Accepted: 07/12/2021] [Indexed: 01/31/2023]
Abstract
To prevent re-infection and provide a hermetic seal of the root canal system, an endodontist must aim to produce a void-free obturation. This review aimed to compare the completeness of root canal obturation between the two most prevalent methods-cold lateral condensation and warm gutta-percha techniques-using micro-CT (PROSPERO reg no. 249815). MATERIALS AND METHODS A search of Scopus, Embase, PubMed (Medline via PubMed), and Web of Science databases was done without any time restriction according to the PRISMA protocol. Articles that compared both techniques and were published in English were included. Data was extracted and the risk of bias was assessed using an adapted tool based on previous studies. RESULTS A total of 141 studies were identified by the search. Following the screening and selection of articles, 9 studies were included for review. Data was extracted manually and tabulated. Most studies had a moderate risk of bias. None determined operator skill in both methods before comparison. The data extracted from the included studies suggests that both techniques produce voids in the obturation. The thermoplasticized gutta-percha techniques may result in fewer voids compared to cold lateral condensation. CONCLUSION Considering the limitations of the included studies, it was concluded that neither technique could completely obturate the root canal. Thermoplasticized gutta-percha techniques showed better outcomes despite a possible learning bias in favor of cold lateral condensation. Establishing operator skills before comparison may help reduce this bias.
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Affiliation(s)
- Shilpa Bhandi
- Department of Restorative Dental Sciences, College of Dentistry, Jazan University, Jazan 45412, Saudi Arabia; (S.B.); (M.M.); (H.C.)
| | - Mohammed Mashyakhy
- Department of Restorative Dental Sciences, College of Dentistry, Jazan University, Jazan 45412, Saudi Arabia; (S.B.); (M.M.); (H.C.)
| | - Abdulaziz S. Abumelha
- Department of Restorative Dental Science, College of Dentistry, King Khalid University, Abha 61421, Saudi Arabia;
| | - Mazen F. Alkahtany
- Department of Restorative Dental Science, Division of Endodontics, College of Dentistry, King Saud University, Riyadh 11362, Saudi Arabia;
| | - Mohamed Jamal
- Department of Endodontics, Hamdan Bin Mohamed College of Dental Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai Health Care City, Dubai 505055, United Arab Emirates;
| | - Hitesh Chohan
- Department of Restorative Dental Sciences, College of Dentistry, Jazan University, Jazan 45412, Saudi Arabia; (S.B.); (M.M.); (H.C.)
| | - A. Thirumal Raj
- Department of Oral Pathology and Microbiology, Sri Venkateswara Dental College and Hospital, Chennai 600130, India;
| | - Luca Testarelli
- Department of Oral and Maxillo Facial Sciences, University of Rome La Sapienza, 00161 Rome, Italy; (L.T.); (R.R.)
| | - Rodolfo Reda
- Department of Oral and Maxillo Facial Sciences, University of Rome La Sapienza, 00161 Rome, Italy; (L.T.); (R.R.)
| | - Shankargouda Patil
- Department of Maxillofacial Surgery and Diagnostic Sciences, Division of Oral Pathology, College of Dentistry, Jazan University, Jazan 45142, Saudi Arabia
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13
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Santos-Junior AO, Tanomaru-Filho M, Pinto JC, Tavares KIMC, Torres FFE, Guerreiro-Tanomaru JM. Effect of obturation technique using a new bioceramic sealer on the presence of voids in flattened root canals. Braz Oral Res 2021; 35:e028. [PMID: 33605358 DOI: 10.1590/1807-3107bor-2021.vol35.0028] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Accepted: 11/19/2020] [Indexed: 12/24/2022] Open
Abstract
The aim of this study was to evaluate the filling ability of a new ready-to-use calcium silicate-based sealer using thermoplastic or single-cone technique in flattened root canals. Twenty-four flattened distal canals of mandibular molars with a buccolingual diameter 4 or more times larger than the mesiodistal diameter were selected. The root canals were prepared and filled (n = 12), according to the following techniques: thermoplastic or single-cone technique using Bio-C Sealer. The teeth were scanned using Skycan 1176 micro-computed tomography (micro-CT) - voxel size 8.74 µm, before and after filling the root canal. The percentage of voids in the filled root canals was evaluated, and the data were statistically analyzed using the unpaired t-test (α = 0.05). The root canals filled using the thermoplastic technique created a smaller percentage of voids in the cervical/middle thirds than those filled using the single-cone technique (p < 0.05). There was no difference in the percentage of voids using either technique in the apical third (p > 0.05). The flattened root canals in the cervical/middle thirds were better filled using the ready-to-use calcium silicate-based sealer associated to the thermoplastic technique, compared with the single-cone technique. In the apical third, the techniques showed similar filling ability.
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Affiliation(s)
- Airton Oliveira Santos-Junior
- Universidade Estadual Paulista - Unesp, School of Dentistry , Department of Restorative Dentistry , Araraquara , SP , Brazil
| | - Mário Tanomaru-Filho
- Universidade Estadual Paulista - Unesp, School of Dentistry , Department of Restorative Dentistry , Araraquara , SP , Brazil
| | - Jáder Camilo Pinto
- Universidade Estadual Paulista - Unesp, School of Dentistry , Department of Restorative Dentistry , Araraquara , SP , Brazil
| | | | - Fernanda Ferrari Esteves Torres
- Universidade Estadual Paulista - Unesp, School of Dentistry , Department of Restorative Dentistry , Araraquara , SP , Brazil
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14
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Tavares KIMC, Pinto JC, Santos-Junior AO, Torres FFE, Guerreiro-Tanomaru JM, Tanomaru-Filho M. Micro-CT evaluation of filling of flattened root canals using a new premixed ready-to-use calcium silicate sealer by single-cone technique. Microsc Res Tech 2020; 84:976-981. [PMID: 33278309 DOI: 10.1002/jemt.23658] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 10/31/2020] [Accepted: 11/12/2020] [Indexed: 12/23/2022]
Abstract
The aim of this study was to evaluate the filling ability of a new premixed ready-to-use calcium silicate-based sealer, in comparison with an epoxy resin-based sealer by the single-cone technique in flattened root canals. Thirty-two flattened root canals of maxillary second premolars with buccal-lingual diameter 4 or more times larger than the mesio-distal diameter at 9 mm from the radiographic apex were selected. Root canals were prepared using Hyflex EDM 25/0.08 and additional preparation with ultrasonic tip Flatsonic and ProDesign Logic 25/0.03. After preparation, the root canals were filled with two root canal sealers (n = 16): Bio-C Sealer or AH Plus using the single-cone technique. Scanning was performed before and after root canal obturation using a Skycan 1176 micro-computed tomography (micro-CT) with an isotropic voxel size of 8.74 μm. The percentage of voids was analyzed in the cervical/middle thirds and in the apical third. Data were submitted to the Mann-Whitney test at a significance level of 5%. There was no statistical difference between Bio-C Sealer and AH Plus (p > .05). The percentage of voids in the cervical/middle thirds was 8.94% (1.33-39.95) for Bio-C Sealer and 9.30% (1.19-18.00) for AH Plus (p > .05). In the apical third, this percentage was 11.84% (4.85-27.00) for Bio-C Sealer and 9.21% (1.34-28.78) for AH Plus (p > .05). By using the single-cone technique, neither Bio-C Sealer nor AH Plus provided a voids-free root canal filling. Both sealers had similar filling ability in flattened root canals.
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Affiliation(s)
- Karina I M C Tavares
- Araraquara School of Dentistry, Department of Restorative Dentistry, UNESP-São Paulo State University, Araraquara, SP, Brazil
| | - Jáder C Pinto
- Araraquara School of Dentistry, Department of Restorative Dentistry, UNESP-São Paulo State University, Araraquara, SP, Brazil
| | - Airton O Santos-Junior
- Araraquara School of Dentistry, Department of Restorative Dentistry, UNESP-São Paulo State University, Araraquara, SP, Brazil
| | - Fernanda F E Torres
- Araraquara School of Dentistry, Department of Restorative Dentistry, UNESP-São Paulo State University, Araraquara, SP, Brazil
| | - Juliane M Guerreiro-Tanomaru
- Araraquara School of Dentistry, Department of Restorative Dentistry, UNESP-São Paulo State University, Araraquara, SP, Brazil
| | - Mário Tanomaru-Filho
- Araraquara School of Dentistry, Department of Restorative Dentistry, UNESP-São Paulo State University, Araraquara, SP, Brazil
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15
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Vantorre T, Bécavin T, Deveaux E, Marchandise P, Chai F, Robberecht L. Are the evaluation criteria used in preclinical endodontic training courses relevant? A preliminary study. AUST ENDOD J 2020; 46:374-380. [PMID: 32654290 DOI: 10.1111/aej.12417] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 04/16/2020] [Accepted: 06/15/2020] [Indexed: 11/27/2022]
Abstract
This study aimed to evaluate the relevance of a conventional evaluation protocol (CEP) for preclinical endodontic training. Seven dental students performed root canal treatments on an extracted human molar which was then evaluated by CEP (clinical and radiographic observations, including preparing the access cavities, preparing and filling the root canal, and detecting iatrogenic errors). A reference evaluation protocol (REP) based on micro-computed tomographic images analysis was used as a control. The evaluation scores obtained by CEP and REP were compared using a non-parametric Wilcoxon's test. CEP was relevant for access cavity, irrigation, working length and ledge detection training but was no more effective than the REP for evaluating the apical diameter and taper of the root canals, the quality of the fillings, and the presence of perforations and fractured instruments using retro-alveolar radiographs. The conventional evaluation criteria used in preclinical endodontics should be used with care to detect 'unsafe' students.
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Affiliation(s)
- Trystan Vantorre
- Department of Restorative Dentistry and Endodontics, Faculty of Odontology, Université de Lille, Lille, France
| | - Thibault Bécavin
- Department of Restorative Dentistry and Endodontics, Faculty of Odontology, Université de Lille, Lille, France
| | - Etienne Deveaux
- Department of Restorative Dentistry and Endodontics, Faculty of Odontology, Université de Lille, Lille, France
| | | | - Feng Chai
- Faculty of Medicine, Université de Lille, INSERM U1008, Lille, France
| | - Lieven Robberecht
- Department of Restorative Dentistry and Endodontics, Faculty of Odontology, Université de Lille, Lille, France.,Faculty of Medicine, Université de Lille, INSERM U1008, Lille, France
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16
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Amaral RR, Guimarães Oliveira AG, Braga T, Reher P, de Macêdo Farias L, Magalhães PP, Ferreira PG, Ilma de Souza Côrtes M. Quantitative Assessment of the Efficacy of Two Different Single-file Systems in Reducing the Bacterial load in Oval-Shaped Canals: A Clinical Study. J Endod 2020; 46:1228-1234. [PMID: 32653532 DOI: 10.1016/j.joen.2020.06.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 06/09/2020] [Accepted: 06/10/2020] [Indexed: 11/29/2022]
Abstract
INTRODUCTION This randomized clinical study compared the in vivo antibacterial efficacy of Reciproc Blue (RB), XP-endo Shaper (XP-S), and XP-endo Shaper associated with XP-endo Finisher (XP-F) systems in infected oval-shaped root canals with primary apical periodontitis. METHODS In this study, 28 human teeth with a single root and a single canal were randomly assigned to 2 groups according to the instrumentation technique: group 1, RB (n = 14) and group 2, XP-endo (XP-S and XP-F, n = 14). The single-rooted teeth were prepared by reciprocating and rotary nickel-titanium instruments with 5.25% sodium hypochlorite irrigation. Samples were collected from the canal at the baseline (S1), after chemomechanical preparation (S2), and after XP-F instrumentation (S3). The DNA extracts were subjected to quantitative analysis for total bacterial counts by quantitative real-time polymerase chain reaction. The data were analyzed using the analysis of variance test, and the level of significance was set at 5%. RESULTS All samples tested positive for the presence of bacteria at baseline, and the bacterial counts substantially reduced after treatment procedures (P < .01). The results showed no statistical difference between RB and XP-S instrumentation with respect to the bacterial reduction (P > .05). A marked bacterial reduction was observed after the use of the XP-F instrument (P < .01). CONCLUSIONS The XP-S and RB systems sharply reduced the bacterial load in oval-shaped root canals with primary apical periodontitis. XP-F used as a supplementary instrument to chemomechanical preparation promoted a significantly higher bacterial reduction.
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Affiliation(s)
- Rodrigo Rodrigues Amaral
- School of Dentistry and Oral Health Griffith University, Gold Coast, Queensland, Australia; Department of Dentistry, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
| | - Anna Gabriella Guimarães Oliveira
- Laboratory of Oral Microbiology and Anaerobes, Department of Microbiology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Tiago Braga
- School of Dentistry and Oral Health Griffith University, Gold Coast, Queensland, Australia
| | - Peter Reher
- School of Dentistry and Oral Health Griffith University, Gold Coast, Queensland, Australia
| | - Luiz de Macêdo Farias
- Laboratory of Oral Microbiology and Anaerobes, Department of Microbiology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Paula Prazeres Magalhães
- Laboratory of Oral Microbiology and Anaerobes, Department of Microbiology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Pedro Gonçalves Ferreira
- Department of Dentistry, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Maria Ilma de Souza Côrtes
- Department of Dentistry, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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17
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Eggmann F, Vokac Y, Eick S, Neuhaus KW. Sonic irrigant activation for root canal disinfection: power modes matter! BMC Oral Health 2020; 20:102. [PMID: 32276625 PMCID: PMC7147034 DOI: 10.1186/s12903-020-01088-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 03/25/2020] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Sonic irrigant activation has gained widespread popularity among general dentists and endodontists alike in recent years. This in vitro study aimed to evaluate the impact of three power modes of a sonic activation device (EDDY) on its antimicrobial effectiveness in infected root canals. METHODS The root canals of straight, human roots (n = 120) were prepared to size 40/.06. In a short-term infection experiment, the root canals were inoculated with different microbial species for three days. The following irrigation protocols, using 4 ml of normal saline as irrigant, were performed: negative control, manual rinsing, sonic irrigant activation at power modes "low", "medium" and "high". In a second, long-term experiment, testing the same irrigation protocols, inoculation lasted 21 days and sodium hypochlorite was used as irrigant. Sequential infection control samples were assessed using culture assays. The statistical analysis included one-way analysis of variance of log10-scaled counts of colony-forming units (CFU) with post-hoc comparisons using Bonferroni corrections and Chi2 tests (α = 0.05). RESULTS In the short-term experiment, the sonic irrigation protocols decreased the number of CFUs by 1.88 log10 units compared with the negative control (p < 0.001). The power modes "medium" and "high" achieved the most effective reduction of the microbial load. In the long-term experiment, microbial regrowth occurred after 7 days unless the device was used at its highest power setting. CONCLUSIONS The power modes of the sonic irrigation device have a significant impact on the effectiveness for endodontic disinfection. The sonic irrigation device should always be used at the highest power setting in order to maximize its antimicrobial effectiveness.
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Affiliation(s)
- Florin Eggmann
- Department of Periodontology, Endodontology and Cariology, University Center for Dental Medicine, UZB, University of Basel, Mattenstrasse 40, CH-4056, Basel, Switzerland.
| | | | - Sigrun Eick
- Laboratory of Oral Microbiology, Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Klaus W Neuhaus
- Department of Periodontology, Endodontology and Cariology, University Center for Dental Medicine, UZB, University of Basel, Mattenstrasse 40, CH-4056, Basel, Switzerland.,Department of Preventive, Restorative and Pediatric Dentistry, University of Bern, Bern, Switzerland
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18
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TRUShape Versus XP-endo Shaper: A Micro–computed Tomographic Assessment and Comparative Study of the Shaping Ability—An In Vitro Study. J Endod 2020; 46:271-276. [DOI: 10.1016/j.joen.2019.10.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 10/18/2019] [Accepted: 10/25/2019] [Indexed: 11/17/2022]
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19
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Evaluation Algorithm of Root Canal Shape Based on Steklov Spectrum Analysis. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2019; 2019:4830914. [PMID: 31885681 PMCID: PMC6925727 DOI: 10.1155/2019/4830914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Revised: 08/29/2019] [Accepted: 09/04/2019] [Indexed: 11/17/2022]
Abstract
In recent years, we have seen more and more interest in the field of medical images and shape comparison motivated by the latest advances in microcomputed tomography (μCT) acquisition, modelling, and visualization technologies. Usually, biologists need to evaluate the effect of different root canal preparation systems. Current root canal preparation evaluation methods are based on the volume difference, area difference, and transportation of two root canals before and after treatment. The purpose of root canal preparation is to minimize the volume difference and ensure the complete removal of the smear layer. Previous methods can reflect some general geometric differences, but they are not enough to evaluate the quality of root canal shape. To solve this problem, we proposed a novel root canal evaluation method based on spectrum and eigenfunctions of Steklov operators, which can be served as a better alternative to current methods in root canal preparation evaluation. Firstly, the ideal root canal model was simulated according to the root canal model before and after preparation. Secondly, the Steklov spectrum of the two models was calculated. Thirdly, based on the spectrum and the histogram of the Gaussian curvature on the surface, the weight of each eigenvalue was computed. Therefore, the Steklov spectrum distance (SSD), which measures shape difference between the root canals, was defined. Finally, the calculation method that quantifies the root canal preparation effect of root canals was obtained. Through experiments, our method manifested high robustness and accuracy compared with existing state-of-the-art approaches. It also demonstrates the significance of our algorithm's advantages on a variety of challenging root canals through result comparison with counterpart methods.
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20
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Ye WH, Yeghiasarian L, Cutler CW, Bergeron BE, Sidow S, Xu HHK, Niu LN, Ma JZ, Tay FR. Comparison of the use of d-enantiomeric and l-enantiomeric antimicrobial peptides incorporated in a calcium-chelating irrigant against Enterococcus faecalis root canal wall biofilms. J Dent 2019; 91:103231. [PMID: 31712128 DOI: 10.1016/j.jdent.2019.103231] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 11/06/2019] [Accepted: 11/07/2019] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVES To compare the anti-biofilm efficacy of two antimicrobial peptides (AMPs), 1018 and DJK-5, in disrupting canal wall biofilms in the isthmus, canal and dentinal tubules of single-rooted maxillary premolars. METHODS Enterococcus faecalis single-species biofilms were formed in-situ in the root canal system of the premolars (n = 91). Confocal laser scanning microscopy, bacterial sampling, colony-forming unit counting, XTT assay, lactate dehydrogenase assay and phenol-sulphuric acid method were used to identify the anti-biofilm efficacy of both AMPs and their influence on bacterial metabolic activity. RESULTS Both AMPs disrupted in-situ E. faecalis biofilms and altered their metabolic activity. At 20 μg/mL, the d-enantiomeric AMP DJK-5 killed 55.5 %, 57.3 % and 55.8 % of biofilm bacteria in the isthmus, canal and dentinal tubules, respectively, in 1 min. In contrast, the l-enantiomeric AMP 1018 only eradicated 25.6 %, 25.5 % and 27.5 % of biofilm bacteria in the isthmus, canal and dentinal tubules, respectively, within the same time. Anti-biofilm efficacy of the root canal irrigants tested were in the order: 6 % NaOCl > 20 μg/mL DJK-5 > 10 μg/mL DJK-5 > 20 μg/mL 1018 > 10 μg/mL 1018 > 0.9 % NaCl. CONCLUSIONS The present results are confirmatory of previous studies, in that d-enantiomeric AMPs exhibit more potent antibacterial properties than l-enantiomeric AMPs against E. faecalis biofilms within the canal space. Nevertheless, the potency of both AMPs are concentration-dependent. Incorporation of these agents into EDTA, a non-antibacterial calcium-chelating irrigant for removal of the inorganic component of the canal space debris, does not reduce the efficacy of either AMP. CLINICAL SIGNIFICANCE The present study provides the proof of concept that incorporation of an antimicrobial peptide into a calcium-chelating root canal irrigant enhances the disinfection of intratubular single-species biofilms during smear layer and smear plug removal.
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Affiliation(s)
- Wei-Hu Ye
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | | | | | - Brian E Bergeron
- The Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - Stephanie Sidow
- The Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - Hockin H K Xu
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, MD, USA
| | - Li-Na Niu
- The Dental College of Georgia, Augusta University, Augusta, GA, USA; State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China; The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, China.
| | - Jing-Zhi Ma
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Franklin R Tay
- The Dental College of Georgia, Augusta University, Augusta, GA, USA.
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21
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Roizenblit RN, Soares FO, Lopes RT, Santos BC, Gusman H. Root canal filling quality of mandibular molars with EndoSequence
BC
and
AH
Plus sealers: A micro‐
CT
study. AUST ENDOD J 2019; 46:82-87. [DOI: 10.1111/aej.12373] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/30/2019] [Indexed: 11/28/2022]
Affiliation(s)
- Rafael Nigri Roizenblit
- Department of Dental Clinic School of Dentistry Federal University of Rio de Janeiro Rio de Janeiro Brazil
| | - Fabiola Ormiga Soares
- Department of Dental Clinic School of Dentistry Federal University of Rio de Janeiro Rio de Janeiro Brazil
| | - Ricardo Tadeu Lopes
- Department of Nuclear Instrumentation Laboratory Technology Center Federal University of Rio de Janeiro Rio de Janeiro Brazil
| | - Bernardo Camargo Santos
- Department of Nuclear Instrumentation Laboratory Technology Center Federal University of Rio de Janeiro Rio de Janeiro Brazil
| | - Heloisa Gusman
- Department of Dental Clinic School of Dentistry Federal University of Rio de Janeiro Rio de Janeiro Brazil
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22
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Biomechanical preparation in primary molars using manual and three NiTi instruments: a cone-beam-computed tomographic in vitro study. Eur Arch Paediatr Dent 2019; 21:203-213. [PMID: 31489569 DOI: 10.1007/s40368-019-00474-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 08/27/2019] [Indexed: 10/26/2022]
Abstract
PURPOSE To evaluate nickel-titanium rotary systems, ProTaper Universal (PTU), ProTaper Next (PTN), self-adjusting file (SAF), and stainless steel hand K files in deciduous root canals in longitudinal and horizontal sections by three-dimensional reconstruction. Whether there was any difference in shaping ability, transportation, dentine removal, untouched canal surface area, and preparation time among the different groups when used in primary root canals. METHODS Shaping and cleaning of canals in primary molars were done using the four systems, and CBCT and specialized software were used for scanning, image processing, three-dimensional reconstruction, and analysis of pre-operative and post-operative to evaluate the groups for their shaping properties, transportation, amount of dentine removal, untouched canal surface area, and preparation time in primary root canals. RESULTS None of the groups reported stripping of canals or instrument failure. SAF demonstrated less removal of dentine as compared to other groups. Hand K files presented with high untouched canal surface area, while it was least with SAF. In addition, rotary files provided faster preparation than hand files, and among the rotary systems, PTN took least time for cleaning and shaping of canals. All the groups were similar in transportation at cervical and apical third. CONCLUSION Under the conditions of this study, SAF seemed to result in more conservative and meticulous removal of dentine. This is desirable to preserve the integrity of thin-walled primary root canals. SAF also showed less untouched canal areas suggesting better contact with the primary canal walls. The rotary file groups required less clinical time which is important in paediatric treatments.
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23
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Pedullà E, Abiad RS, Conte G, Khan K, Lazaridis K, Rapisarda E, Neelakantan P. Retreatability of two hydraulic calcium silicate‐based root canal sealers using rotary instrumentation with supplementary irrigant agitation protocols: a laboratory‐based micro‐computed tomographic analysis. Int Endod J 2019; 52:1377-1387. [DOI: 10.1111/iej.13132] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 04/23/2019] [Indexed: 01/24/2023]
Affiliation(s)
- E. Pedullà
- Department of General Surgery and Medical‐Surgical Specialties University of Catania Catania Italy
| | - R. S. Abiad
- Endodontic Division Faculty of Dentistry Beirut Arab University Beirut Lebanon
| | - G. Conte
- Department of General Surgery and Medical‐Surgical Specialties University of Catania Catania Italy
| | - K. Khan
- Discipline of Endodontology Faculty of Dentistry The University of Hong Kong Hong Kong SAR Hong Kong
| | - K. Lazaridis
- Department of General Surgery and Medical‐Surgical Specialties University of Catania Catania Italy
| | - E. Rapisarda
- Department of General Surgery and Medical‐Surgical Specialties University of Catania Catania Italy
| | - P. Neelakantan
- Discipline of Endodontology Faculty of Dentistry The University of Hong Kong Hong Kong SAR Hong Kong
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24
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Jensen LE, Murphy S, Williamson AE, Teixeira FB, Johnson WT, Friedl CC, Peters OA. Root canal preparation in mandibular premolars with TRUShape and Vortex Blue: A micro-computed tomography study. AUST ENDOD J 2019; 45:12-19. [PMID: 30614165 DOI: 10.1111/aej.12322] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/16/2018] [Indexed: 11/30/2022]
Abstract
A comparison of the preparation ability of two root canal instrumentation systems in oval-shaped canals using micro-computed tomography was undertaken. Thirty extracted, single-rooted, human mandibular premolars with radiographically similar canal morphology were selected, allocated to two groups (N = 15) and prepared with TRUShape or Vortex Blue (VB). Each sample was subjected to three scans (20 μm resolution): pre-preparation and after preparation to sizes #30 and #40. Three-dimensional data sets were evaluated for canal volume, surface area and surface treatment. Matched axial slices in apical, middle and coronal root thirds were evaluated for cross-sectional area, roundness and transportation. Preparation with both instruments increased canal volumes and surface areas similarly and significantly (P < 0.001) with no significant difference between groups. TRUShape significantly enhanced surface treatment at both apical sizes (P < 0.05). Transportation exceeded 100 μm in only eight out of 90 cross sections. Both instruments performed similarly during preparation. TRUShape, however, significantly enhanced surface treatment.
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Affiliation(s)
- Lauren E Jensen
- Department of Endodontics, University of Iowa College of Dentistry, Iowa City, Iowa, USA
| | - Sarah Murphy
- Department of Endodontics, University of the Pacific, Arthur A. Dugoni School of Dentistry, San Francisco, California, USA
| | - Anne E Williamson
- Department of Endodontics, University of Iowa College of Dentistry, Iowa City, Iowa, USA
| | - Fabricio B Teixeira
- Department of Endodontics, University of Iowa College of Dentistry, Iowa City, Iowa, USA
| | - William T Johnson
- Department of Endodontics, University of Iowa College of Dentistry, Iowa City, Iowa, USA
| | - Christopher C Friedl
- Department of Endodontics, University of Iowa College of Dentistry, Iowa City, Iowa, USA
| | - Ove A Peters
- Department of Endodontics, University of the Pacific, Arthur A. Dugoni School of Dentistry, San Francisco, California, USA.,Oral Health Centre, University of Queensland, Herston, Queensland, Australia
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PINTO JC, PIVOTO-JOÃO MMB, ESPIR CG, RAMOS MLG, GUERREIRO-TANOMARU JM, TANOMARU-FILHO M. Micro-CT evaluation of apical enlargement of molar root canals using rotary or reciprocating heat-treated NiTi instruments. J Appl Oral Sci 2019; 27:e20180689. [DOI: 10.1590/1678-7757-2018-0689] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 03/09/2019] [Indexed: 12/18/2022] Open
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Chhabra N, Gangaramani S, Singbal KP, Desai K, Gupta K. Efficacy of various solutions in preventing orange-brown precipitate formed during alternate use of sodium hypochlorite and chlorhexidine: An in vitro study. J Conserv Dent 2018; 21:428-432. [PMID: 30122826 PMCID: PMC6080170 DOI: 10.4103/jcd.jcd_72_18] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Aim The study evaluated the effectiveness of three intermediate endodontic irrigating solutions in eliminating the residual sodium hypochlorite (NaOCl), thus preventing the formation of the orange-brown precipitate when 2% chlorhexidine (CHX) is used as the final irrigant. Materials and Methods A total of 40 extracted human maxillary anterior teeth were selected, disinfected, and decoronated to obtain a standardized length of 10 mm. The teeth were prepared with Protaper universal rotary files until size F4 using 2.5% NaOCl as an irrigant during instrumentation. The teeth were then randomly divided into four groups of 10 samples each based on the irrigating solutions used during final wash sequence as follows: Group A - (2.5% NaOCl and 2% CHX), Group B - (2.5% NaOCl followed by 70% Isopropyl Alcohol and 2% CHX), Group C - (2.5% NaOCl followed by 6.25% sodium metabisulfite and 2% CHX), and Group D - (2.5% NaOCl followed by 3.86% sodium Thiosulfate and 2% CHX). The roots were sectioned longitudinally and the canal surface was evaluated under dental operating microscope (×16) for the presence of orange-brown precipitate. The results were tabulated as per scoring criteria and statistically analyzed. Statistical Analysis Used One-way ANOVA test and post hoc Tukey's test. Results The lowest mean score was observed in Group C, followed by Group D and Group B, respectively. In comparison, there was a statistically significant (P < 0.001) difference in results between Group C and the other experimental groups. However, there was no statistically significant difference between Group B and Group D. Conclusion Sodium metabisulfite was found to be very effective in preventing the formation of orange-brown precipitate.
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Affiliation(s)
- Naveen Chhabra
- Department of Conservative Dentistry and Endodontics, K M Shah Dental College and Hospital, Sumandeep Vidyapeeth, Vadodara, Gujarat, India
| | - Satish Gangaramani
- Department of Conservative Dentistry and Endodontics, K M Shah Dental College and Hospital, Sumandeep Vidyapeeth, Vadodara, Gujarat, India
| | - Kiran Prabhakar Singbal
- Department of Conservative Dentistry, Faculty of Dentistry, MAHSA University, Kuala Lumpur, Malaysia
| | - Krupa Desai
- Department of Conservative Dentistry and Endodontics, K M Shah Dental College and Hospital, Sumandeep Vidyapeeth, Vadodara, Gujarat, India
| | - Kritika Gupta
- Department of Conservative Dentistry and Endodontics, K M Shah Dental College and Hospital, Sumandeep Vidyapeeth, Vadodara, Gujarat, India
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Dembinskaite A, Veberiene R, Machiulskiene V. Successful treatment of dens invaginatus type 3 with infected invagination, vital pulp, and cystic lession: A case report. Clin Case Rep 2018; 6:1565-1570. [PMID: 30147906 PMCID: PMC6099029 DOI: 10.1002/ccr3.1647] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 05/07/2018] [Accepted: 05/23/2018] [Indexed: 12/14/2022] Open
Abstract
All efforts should be aimed to safe permanent tooth for adolescents. Presented rare case confirms a possibility to save a tooth with Oehlers Type 3 anomaly with peri-invaginated periodontitis and to preserve vitality of the tooth pulp, even when surgical cyst removal is performed.
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Affiliation(s)
- Ausra Dembinskaite
- Clinic of Dental and Oral PathologyFaculty of OdontologyLithuanian University of Health SciencesKaunasLithuania
| | - Rita Veberiene
- Clinic of Dental and Oral PathologyFaculty of OdontologyLithuanian University of Health SciencesKaunasLithuania
| | - Vita Machiulskiene
- Clinic of Dental and Oral PathologyFaculty of OdontologyLithuanian University of Health SciencesKaunasLithuania
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Espir CG, Nascimento-Mendes CA, Guerreiro-Tanomaru JM, Freire LG, Gavini G, Tanomaru-Filho M. Counterclockwise or clockwise reciprocating motion for oval root canal preparation: a micro-CT analysis. Int Endod J 2018; 51:541-548. [PMID: 28375575 DOI: 10.1111/iej.12776] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Accepted: 03/29/2017] [Indexed: 11/28/2022]
Abstract
AIM To evaluate oval root canal preparation using one or two instruments in counterclockwise or clockwise reciprocating motion. METHODOLOGY The radiographic diameter of mandibular human incisors was evaluated, and oval canals were selected (2 ≤ Diameter Ratio ≤ 4). Fifty-seven teeth were assigned to root canal preparation (n = 19): Reciproc 40 (R40) in a counterclockwise reciprocating motion; Mtwo size 40, .06 taper (M 40.06) in a clockwise reciprocating motion or Mtwo size 20, .06 taper and size 40, .06 taper (M 20/40.06) in a clockwise reciprocating motion. Mtwo instruments were coupled to an ENDO DUAL motor, turning 150° clockwise and 30° counterclockwise. Scanning was performed before and after root canal preparation using a SkyScan 1176 micro-computed tomography. Volume, percentage of debris and percentage of uninstrumented surface were analysed in the entire root canal and in each third of the canal. Data were compared using anova and Tukey's tests or Kruskal-Wallis and Dunn tests. RESULTS The Reciproc and Mtwo systems using different kinematics were associated with a similar increase in root canal volume. Additionally, both system had similar percentage of uninstrumented surface (P > 0.05). Mtwo size 20, .06 taper and size 40, .06 taper was associated with significantly lower debris (P < 0.05) in the middle third (0.56%) when compared to R40 (1.31%) and M size 40, .06 taper (1.54%). CONCLUSIONS The conventional reciprocation motion for R40 and the clockwise reciprocation motion for Mtwo resulted in similar root canal preparations. Less remaining debris was present in the middle third when two instruments with different diameters were used.
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Affiliation(s)
- C G Espir
- Department of Restorative Dentistry, Araraquara Dental School, São Paulo State University, Araraquara, São Paulo, Brazil
| | - C A Nascimento-Mendes
- Department of Restorative Dentistry, Araraquara Dental School, São Paulo State University, Araraquara, São Paulo, Brazil
| | - J M Guerreiro-Tanomaru
- Department of Restorative Dentistry, Araraquara Dental School, São Paulo State University, Araraquara, São Paulo, Brazil
| | - L G Freire
- Department of Dentistry, São Paulo Dental School, University of São Paulo, São Paulo, São Paulo, Brazil
| | - G Gavini
- Department of Dentistry, São Paulo Dental School, University of São Paulo, São Paulo, São Paulo, Brazil
| | - M Tanomaru-Filho
- Department of Restorative Dentistry, Araraquara Dental School, São Paulo State University, Araraquara, São Paulo, Brazil
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Espir CG, Nascimento-Mendes CA, Guerreiro-Tanomaru JM, Cavenago BC, Hungaro Duarte MA, Tanomaru-Filho M. Shaping ability of rotary or reciprocating systems for oval root canal preparation: a micro-computed tomography study. Clin Oral Investig 2018. [DOI: 10.1007/s00784-018-2411-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Rahimi S, Ghasemi N, Razi T, Rezaiepour A. Quality of the calcium-enriched mixture apical plug in simulated apexification model; Effect of different mixing and placement methods. J Clin Exp Dent 2017; 9:e1237-e1241. [PMID: 29167715 PMCID: PMC5694154 DOI: 10.4317/jced.53236] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 09/06/2017] [Indexed: 11/05/2022] Open
Abstract
Background Presence of voids at root canal wall‒apical seal material interface gives rise to the entrapment of toxins and microorganisms, which might have a relationship with post treatment disease. The present study was carried out to evaluate the effect of different mixing (manual and ultrasonic) and placement (manual and manual in association with indirect ultrasonic) methods of Calcium-enriched Mixture (CEM) cement on the number and dimensions of voids in the apical plug in simulated apexification models. Material and Methods A total of 80 human maxillary central incisors with mature apices were selected. After simulation of the open apices, the teeth were divided into 4 groups (n=20) based on the mixing and placement techniques of CEM cement: group 1, manual mixing‒manual placement; group 2, manual mixing‒manual placement in association with indirect ultrasonic technique; group 3, ultrasonic mixing‒manual placement; and group 4, ultrasonic mixing‒manual placement in association with indirect ultrasonic technique. The samples were placed within gypsum sockets in which the periodontal ligament was reconstructed with polyether impression material. After placement the apical plugs, a wet piece of cotton was placed on canal orifices, followed by dressing with Cavit. The samples were incubated at 37°C and 100% relative humidity for 7 days. Then the voids between the material and root canal walls were counted with the CBCT technique. The void dimensions were scored with the following scoring system: score 1, no voids; score 2, the void size less than half of the size of the evaluated cross-section; score 3, the void size larger than half of the size of the evaluated cross-section. Statistical analyses were carried out with chi-squared and Fisher's exact tests. Statistical significance was defined at P<0.05. Results The maximum (7) and minimum (2) number of voids were detected in groups 1 and 2, respectively. The difference between these two groups was statistically significant (p<0.05). The differences in the number of voids between groups with similar mixing technique and different mixing techniques (i.e. groups 1 and 3 and groups 2 and 4) were not significant (p>0.05). Void dimensions in all the study groups were in score 2 category and no score 3 was recorded in the study groups. Conclusions Under the limitations of the present study, manual placement in association with indirect ultrasonic technique was a proper technique to improve the quality of apical plug, considering the decrease in the number of voids. Key words:Apical plug, CEM cement, void.
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Affiliation(s)
- Saeed Rahimi
- Professor, Dental and Periodontal Research Center, Department of Endodontics, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran
| | - Negin Ghasemi
- Assistant Professor, Dental and Periodontal Research Center, Department of Endodontics, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran
| | - Tahmineh Razi
- Assistant Professor, Department of Radiology, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran
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Lacerda MF, Marceliano-Alves MF, Pérez AR, Provenzano JC, Neves MA, Pires FR, Gonçalves LS, Rôças IN, Siqueira JF. Cleaning and Shaping Oval Canals with 3 Instrumentation Systems: A Correlative Micro–computed Tomographic and Histologic Study. J Endod 2017; 43:1878-1884. [DOI: 10.1016/j.joen.2017.06.032] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 06/08/2017] [Accepted: 06/26/2017] [Indexed: 11/29/2022]
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3D Micro-CT Analysis of Void and Gap Formation in Curved Root Canals. Eur Endod J 2017; 2:1-5. [PMID: 33403353 PMCID: PMC7757970 DOI: 10.14744/eej.2017.17004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 03/04/2017] [Accepted: 05/05/2017] [Indexed: 11/20/2022] Open
Abstract
Objective: This study used microcomputed tomography (micro-CT) to compare the volumes of voids and gaps in curved root canals instrumented and filled using various techniques. Methods: Twenty extracted mandibular first molars with two curved mesial root canals were used. Root canals were instrumented using a self-adjusting file (SAF) or Revo-S file system. For standardization, mesiobuccal canals were instrumented with SAF and mesiolingual canals were instrumented with Revo-S in each root. The canals were divided into four experimental groups (n=10 in each). The canals were then filled via cold lateral compaction (CLC) or a thermoplasticized injectable technique (TT) using gutta-percha and AH Plus root canal sealer. The roots were scanned with a micro-CT, and the volumes of the voids and gaps were calculated using three-dimensional (3D) micro-CT images. Data were analyzed using unpaired t- and Kruskal-Wallis tests. A value of P<0.05 was considered significant. Results: None of the tested techniques provided void- or gap-free fillings. Nevertheless, the SAF showed more gap formation than the Revo-S, and TT showed higher gap formation in all experimental groups. These differences, however, were not statistically significant (P>0.05). Conclusion: The SAF and Revo-S rotary file systems yielded comparable results. No statistically significant difference was found between the results of the various instrumentation and filling techniques.
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Hidalgo LRDC, Silva LABD, Leoni GB, Mazzi-Chaves JF, Carvalho EEDS, Consolaro A, Sousa-Neto MD. Mechanical Preparation Showed Superior Shaping Ability than Manual Technique in Primary Molars - A Micro-Computed Tomography Study. Braz Dent J 2017; 28:453-460. [DOI: 10.1590/0103-6440201601552] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 05/09/2017] [Indexed: 11/21/2022] Open
Abstract
Abstract The aim of the study was to evaluate canal preparation in primary molars with hand files, ProTaper Next and Self-Adjusting File (SAF) by 2D and 3D micro-computed tomography (micro-CT) analysis. Canals of 24 primary molars were prepared with hand files (HF), ProTaper Next (PTN) and SAF (n=8/group). The teeth were scanned before and after root canal preparation and the pre- and postoperative micro-CT images were reconstructed. Changes in 2D (area, perimeter, roundness, minor and major diameter) and 3D [volume, surface area, structure model index (SMI)] morphological parameters, as well as canal transportation and lateral perforations were evaluated (Kruskal-Wallis and ANOVA; a=0.05). SAF presented smaller changes in minor diameter, volume and surface area compared with HF and PTN (p<0.05). PTN presented more circular canals after preparation. 3D analysis revealed greater transportation in HF. PTN and SAF presented more centered canal preparation, especially in curved areas. SAF and HF presented, respectively, the lowest (0.05±0.02 and 0.07±0.04) and highest (0.14±0.11 and 0.29±0.17) apical transportation. There were fewer lateral perforations in SAF (4.2%) and PTN (7.7%) than in HF (47.8%) (p<0.05). In primary molars, mechanical preparation showed better shaping ability than hand files, promoting more centered preparations and lower occurrence of lateral perforations and canal transportation. Clinical Relevance: Manual instrumentation is still reported as the main choice in the primary teeth preparation; however, studies have shown limitations in its use. The morphological characteristics of primary teeth and the limited knowledge of shaping procedures in these teeth using mechanical preparation become a challenge for clinical practice and might impair the predictability of endodontic treatment.
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Zuolo ML, Zaia AA, Belladonna FG, Silva EJNL, Souza EM, Versiani MA, Lopes RT, De-Deus G. Micro-CT assessment of the shaping ability of four root canal instrumentation systems in oval-shaped canals. Int Endod J 2017; 51:564-571. [DOI: 10.1111/iej.12810] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 06/27/2017] [Indexed: 11/29/2022]
Affiliation(s)
- M. L. Zuolo
- Endodontic Division; Department of Restorative Dentistry; Piracicaba Dental School; State University of Campinas; Piracicaba São Paulo Brazil
| | - A. A. Zaia
- Endodontic Division; Department of Restorative Dentistry; Piracicaba Dental School; State University of Campinas; Piracicaba São Paulo Brazil
| | - F. G. Belladonna
- Department of Endodontics; Fluminense Federal University; Niterói Rio de Janeiro Brazil
| | - E. J. N. L. Silva
- Department of Endodontics; Grande Rio University; Duque de Caxias Rio de Janeiro Brazil
| | - E. M. Souza
- Department of Dentistry II; Federal University of Maranhão; São Luís Maranhão Brazil
| | - M. A. Versiani
- Department of Restorative Dentistry; Dental School of Ribeirão Preto; University of São Paulo; São Paulo São Paulo Brazil
| | - R. T. Lopes
- Nuclear Engineering Program; Federal University of Rio de Janeiro; Rio de Janeiro Brazil
| | - G. De-Deus
- Department of Endodontics; Fluminense Federal University; Niterói Rio de Janeiro Brazil
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Guimarães LS, Gomes CC, Marceliano-Alves MF, Cunha RS, Provenzano JC, Siqueira JF. Preparation of Oval-shaped Canals with TRUShape and Reciproc Systems: A Micro–Computed Tomography Study Using Contralateral Premolars. J Endod 2017; 43:1018-1022. [DOI: 10.1016/j.joen.2017.01.028] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Revised: 01/14/2017] [Accepted: 01/17/2017] [Indexed: 11/26/2022]
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Arias A, Paqué F, Shyn S, Murphy S, Peters OA. Effect of canal preparation with TRUShape and Vortex rotary instruments on three-dimensional geometry of oval root canals. AUST ENDOD J 2017; 44:32-39. [DOI: 10.1111/aej.12201] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ana Arias
- Department of Endodontics; University of the Pacific; Arthur A Dugoni School of Dentistry; San Francisco CA USA
- Department of Conservative Dentistry; School of Dentistry; Complutense University; Madrid Spain
| | - Frank Paqué
- Department of Preventive Dentistry, Periodontology and Cariology; University of Zurich Dental School; Zurich Switzerland
| | - Stephanie Shyn
- Department of Endodontics; University of the Pacific; Arthur A Dugoni School of Dentistry; San Francisco CA USA
| | - Sarah Murphy
- Department of Endodontics; University of the Pacific; Arthur A Dugoni School of Dentistry; San Francisco CA USA
| | - Ove A. Peters
- Department of Endodontics; University of the Pacific; Arthur A Dugoni School of Dentistry; San Francisco CA USA
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Dannemann M, Kucher M, Kirsch J, Binkowski A, Modler N, Hannig C, Weber MT. An Approach for a Mathematical Description of Human Root Canals by Means of Elementary Parameters. J Endod 2017; 43:536-543. [DOI: 10.1016/j.joen.2016.11.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 11/07/2016] [Accepted: 11/10/2016] [Indexed: 10/20/2022]
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Ghasemi N, Janani M, Razi T, Atharmoghaddam F. Effect of different mixing and placement methods on the quality of MTA apical plug in simulated apexification model. J Clin Exp Dent 2017; 9:e351-e355. [PMID: 28298973 PMCID: PMC5347280 DOI: 10.4317/jced.53410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 09/18/2016] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND It is necessary apical plug material to exhibit proper adaptation with the root canal walls. Presence of voids at the interface between the root canal wall and this material result in micro leakage, which might have a relationship with post treatment disease. The aim of the present study was to evaluate the effect of different mixing (manual and ultrasonic) and placement (manual and manual in association with indirect ultrasonic) method of Mineral Trioxide Aggregate (MTA) on the void count and dimension in the apical plug in natural teeth with simulated open apices. MATERIAL AND METHODS Eighty human maxillary central incisors were selected. After simulation of the open apex model, the teeth were assigned to 4 groups based on the mixing and placement techniques of MTA: group 1, manual mixing and manual placement; group 2, manual mixing and manual placement in association with indirect ultrasonic; group 3, ultrasonic mixing and and manual placement; and group 4, ultrasonic mixing and manual placement in association with indirect ultrasonic. The prepared samples were placed within gypsum sockets in which the periodontal ligament was reconstructed with polyether impression material. In group 1, after mixing, the material was condensed with a hand plugger. In group 2, after mixing, the ultrasonic tip was contacted with the hand plugger for 2 seconds. In groups 3 and 4, mixing was carried out with the ultrasonic tip for 5 seconds and in groups 3 and 4, similar to groups 1 and 2, respectively, the materials were placed as apical plugs, measuring 3 mm in length. A wet cotton pellet was placed at canal orifices and dressed with Cavit. After one week, the cone beam computed tomography (CBCT) technique was used to count the number of voids between the material and root canal walls. The void dimensions were determined using the following scoring system: score 1, absence of voids; score 2, the void size less than half of the dimensions of the evaluated cross-section; score 3, the void size larger than half of the dimensions of the evaluated cross-section. Chi-squared and Fisher's exact tests were used for statistical analyses. Statistical significance was set at P<0.05. RESULTS The maximum (13) and minimum (3) number of voids were detected in groups 2 and 3, respectively. There were no significant differences between groups 1 and 3 in the number of voids (p >0.05). Evaluation of void dimensions showed no score 3 in any of the study groups and the dimensions of all the voids conformed to score 2. CONCLUSIONS Under the limitations of the present study, use of ultrasonic mixing and manual placement techniques resulted in a decrease in the number of voids in the apical plug. Key words:Apical plug, MTA, ultrasonic, void.
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Affiliation(s)
- Negin Ghasemi
- Assistant Professor, Department of Endodontics, Dental and Periodontal Research Center, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran
| | - Maryam Janani
- Assistant Professor, Department of Endodontics, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran
| | - Tahmineh Razi
- Assistant Professor, Department of Radiology, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran
| | - Faezeh Atharmoghaddam
- Student of Dentistry, Dental Faculty, Tabriz University, (Medical Sciences), Tabriz, Iran
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Arias MPC, Maliza AGA, Midena RZ, Graeff MSZ, Duarte MAH, Andrade FBD. Effect of ultrasonic streaming on intra-dentinal disinfection and penetration of calcium hydroxide paste in endodontic treatment. J Appl Oral Sci 2017; 24:575-581. [PMID: 28076462 PMCID: PMC5161256 DOI: 10.1590/1678-775720150553] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 05/03/2016] [Indexed: 11/21/2022] Open
Abstract
Objective The antimicrobial effect of ultrasonic agitation of calcium hydroxide (CH) pastes in infected bovine dentin and their penetrability were evaluated using confocal laser scanning microscopy (CLSM) and microbiological culture. Material and Methods Fifty-two bovine teeth were infected with Enterococcus faecalis using a new contamination protocol; then they received CH paste and were divided into groups with or without ultrasound. Ultrasonic agitation was conducted for 1 min with a plain point insert. After 15 d, the CLSM analyzed the viable and dead bacteria with Live and Dead assay. The dentinal wall debris was collected by burs, and the colony forming units (CFU/mL) were counted. The penetrability of the paste inside dentinal tubules was tested using the B-rodamine dye. Results The calcium hydroxide paste showed better results with the use of ultrasonic agitation (p<0.05). Conclusion The ultrasonic agitation of CH paste increased its antimicrobial action and was responsible for intradentinal penetration with the fulfilment of the tubules.
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Affiliation(s)
- Marcela Paola Castro Arias
- - Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Dentística, Endodontia e Materiais Odontológicos, Bauru, SP, Brasil
| | - Amanda Garcia Alves Maliza
- - Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Dentística, Endodontia e Materiais Odontológicos, Bauru, SP, Brasil
| | - Raquel Zanin Midena
- - Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Dentística, Endodontia e Materiais Odontológicos, Bauru, SP, Brasil
| | | | - Marco Antonio Húngaro Duarte
- - Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Dentística, Endodontia e Materiais Odontológicos, Bauru, SP, Brasil
| | - Flaviana Bombarda de Andrade
- - Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Dentística, Endodontia e Materiais Odontológicos, Bauru, SP, Brasil
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Keleş A, Keskin C. Apical Root Canal Morphology of Mesial Roots of Mandibular First Molar Teeth with Vertucci Type II Configuration by Means of Micro–Computed Tomography. J Endod 2017; 43:481-485. [DOI: 10.1016/j.joen.2016.10.045] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 10/28/2016] [Accepted: 10/30/2016] [Indexed: 01/22/2023]
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41
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SEREFOGLU B, PİSKİN B. Micro computed tomography evaluation of the Self-adjusting file and ProTaper Universal system on curved mandibular molars. Dent Mater J 2017; 36:606-613. [DOI: 10.4012/dmj.2016-255] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Burcu SEREFOGLU
- Ege University, School of Dentistry, Department of Endodontology
| | - Beyser PİSKİN
- Ege University, School of Dentistry, Department of Endodontology
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42
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Solomonov M, Itzhak JB, Levin A, Katzenell V, Shemesh A. Successful orthograde treatment of dens invaginatus Type 3 with a main C-shaped canal based on cone-beam computed tomography evaluation. J Conserv Dent 2016; 19:587-590. [PMID: 27994325 PMCID: PMC5146779 DOI: 10.4103/0972-0707.194034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Dens invaginatus is a rare anatomic variation that is found primarily in maxillary lateral incisors. The management of dens invaginatus is challenging for clinicians; diagnosing the type of malformation, choosing the most appropriate treatment, and carrying out treatment are complicated by the intricate root system of these teeth. The following case report describes the diagnosis and treatment planning of dens invaginatus Type 3 after cone-beam computed tomography evaluation.
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Affiliation(s)
- Michael Solomonov
- Department of Endodontics, Israel Defense Forces Medical Corps, Tel Hashomer, Israel
| | - Joe Ben Itzhak
- Department of Endodontics, Israel Defense Forces Medical Corps, Tel Hashomer, Israel
| | - Avi Levin
- Department of Endodontics, Israel Defense Forces Medical Corps, Tel Hashomer, Israel
| | - Vered Katzenell
- Department of Endodontics, Israel Defense Forces Medical Corps, Tel Hashomer, Israel
| | - Avi Shemesh
- Department of Endodontics, Israel Defense Forces Medical Corps, Tel Hashomer, Israel
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43
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Uzunoglu E, Ilgın C, Yuruker S, Görduysus M. Radiological, stereological, and microscopic evaluation of the quality of canal fillings in oval-shaped root canals prepared with self-adjusting file. SCANNING 2016; 38:427-433. [PMID: 26701128 DOI: 10.1002/sca.21289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Accepted: 11/22/2015] [Indexed: 06/05/2023]
Abstract
The aim of this study was to evaluate the quality of the canal fillings performed by thermoplastic technique (Herofill) and cold lateral condensation (CLC) techniques in oval shaped canals following self-adjusting file (SAF) preparation using radiological, stereological, and microscopic evaluation methods. Twelve pairs of oval-shaped root canals were prepared with SAF and filled using CLC (n = 12) or the Herofill system (n = 12). The quality of the root canal filling was evaluated by (i) scoring bidirectional storage phosphor plate images, (ii) stereological (volumetric) analysis of cone beam computerized tomography (CBCT) images, and (iii) microscopic analysis of the cross-sectioned area of the canal and gutta-percha via image analysis software. Chi-square test, t-test, and Mann-Whitney U-tests were used respectively (p < 0.05) for the aforementioned evaluations. 58.33% of the fillings (total n = 24) that were found to be sufficient in a bucco-lingual (BL) projection were considered insufficient in the mesio-distal (MD) projection according to radiological scoring. The difference in the findings between the two types of projections (BL and MD) was significant (p < 0.05). The results of the stereological evaluation of CBCT images and image analysis of cross-sections showed no statistically significant difference between the CLC and Herofill (p > 0.05). Herofill was not superior to cold lateral compaction. Stereology can be used to obtain unbiased information about the volume of root canal fillings. Both filling techniques failed to achieve the desirable goal of 0% empty volume in all of the cases and all evaluation systems confirmed this result. SCANNING 38:427-433, 2016. © 2015 Wiley Periodicals, Inc.
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Affiliation(s)
- Emel Uzunoglu
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.
| | - Can Ilgın
- Department of Histology and Embryology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Sinan Yuruker
- Department of Histology and Embryology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Melahat Görduysus
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
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44
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Başer Can ED, Keleş A, Aslan B. Micro-CT evaluation of the quality of root fillings when using three root filling systems. Int Endod J 2016; 50:499-505. [DOI: 10.1111/iej.12644] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 03/31/2016] [Indexed: 12/01/2022]
Affiliation(s)
- E. D. Başer Can
- Department of Endodontics; Faculty of Dentistry; Yeditepe University; Istanbul Turkey
| | - A. Keleş
- Department of Endodontics; Faculty of Dentistry; Ondokuz Mayıs University; Samsun Turkey
| | - B. Aslan
- Department of Endodontics; Faculty of Dentistry; Ankara University; Ankara Turkey
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Keleş A, Alcin H, Kamalak A, Versiani MA. Oval-shaped canal retreatment with self-adjusting file: a micro-computed tomography study. Clin Oral Investig 2016; 18:1147-1153. [PMID: 23959377 DOI: 10.1007/s00784-013-1086-0] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2013] [Accepted: 08/05/2013] [Indexed: 11/25/2022]
Abstract
OBJECTIVES The aim of this study was to assess the efficacy of removing the filling material from oval-shaped canals with rotary retreatment files, with or without the additional use of self-adjusting file (SAF), using micro-computed tomography. MATERIALS AND METHODS Oval-shaped canals from 20 maxillary premolars were prepared and assigned to two groups (n = 10), according to the obturation technique: cold lateral condensation (CLC) or vertical condensation (VC). Then, retreatment procedure was performed with retreatment rotary instruments followed by SAF. The specimens were scanned after each procedure and the volume of the filling material calculated. Median and interquartile range (IQR) percentages of the remaining filling material after each retreatment technique were statistically compared by Wilcoxon and Mann–Whitney U tests with a significance level of 5 %. RESULTS The median percentage volume of the filling residue after rotary retreatment procedure was 1.59 (IQR = 1.26) and 0.42 (IQR = 0.86) in the CLC and VC groups, respectively (p < 0.05). After the use of SAF, the median percentage was 1.26 (IQR = 0.75) and 0.12 (IQR = 0.53) in the CLC and VC groups, respectively (p < 0.05). Statistically significant difference was also observed within the group after the additional use of SAF (p < 0.05). CONCLUSIONS None of the retreatment procedures completely removed the filling material. The additional use of the SAF improved the removal of filling material after the retreatment procedure with rotary instruments. CLINICAL RELEVANCE Filling material left after retreatment procedure may harbour necrotic tissue and bacteria, which could lead to a persistent disease and reinfection of the root canal system. The additional use of self-adjusting file after the conventional retreatment procedures may improve root canal cleanliness, allowing a better action of the irrigating solution.
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Affiliation(s)
- Ali Keleş
- Department of Endodontics, Faculty of Dentistry, İnönü University, Malatya, Turkey
| | - Hatice Alcin
- Department of Endodontics, Faculty of Dentistry, İnönü University, Malatya, Turkey
| | - Aliye Kamalak
- Department of Endodontics, Faculty of Dentistry, İnönü University, Malatya, Turkey
| | - Marco A Versiani
- Department of Restorative Dentistry, Faculty of Dentistry, University of São Paulo, Ribeirão Preto, São Paulo, Brazil. .,, Av. Do Café s/n, Bairro Monte Alegre, Ribeirão Preto, São Paulo, 14.040-904, Brazil.
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46
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Celikten B, Uzuntas CF, Orhan AI, Orhan K, Tufenkci P, Kursun S, Demiralp KÖ. Evaluation of root canal sealer filling quality using a single-cone technique in oval shaped canals: An In vitro Micro-CT study. SCANNING 2016; 38:133-140. [PMID: 26228657 DOI: 10.1002/sca.21249] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 07/13/2015] [Indexed: 06/04/2023]
Abstract
The aim of this study was to evaluate and compare the presence of voids in oval root canals filled with different root canal sealers (EndoSequence BC Sealer, Smartpaste bio, ActiV GP) and to compare those with root canals filled with AH Plus sealer using micro-CT. In total, 40 freshly extracted human single-root maxillary premolars were used. Specimens instrumented with the EndoSequence NiTi rotary instrument were assigned randomly into four groups. In each group, root canals were filled with single-cone gutta-percha and one of the tested sealers. Each specimen was then scanned using micro-CT at a voxel resolution of 13.47 μm. Proportions of sections with voids in cross-sectional images and void volumes for each sealer were calculated in the apical, middle, and coronal thirds. Differences according to root canal sealers were evaluated statistically using the Kruskal-Wallis test and the Mann-Whitney U-test at a significance level of 5%. The analysis showed a decrease in void formation in the apical third, with a significant difference between the apical and coronal thirds among bioceramic sealers, ActiV GP, and AH Plus (p < 0.05) but no significant difference between the apical and middle thirds or between the middle and coronal thirds was found for the sealers tested (p > 0.05). All root canal sealers tested resulted in voids. The bioceramic sealers (EndoSequence BC Sealer, Smartpaste bio) produced similar voids which had the fewest in the apical third of root canals among the sealers tested which can be related due to root canal anatomy variations.
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Affiliation(s)
- Berkan Celikten
- Department of Endodontics, Faculty of Dentistry, Ankara University, Ankara, Turkey
| | - Ceren Feriha Uzuntas
- Ministry of Health, Ataturk Oral and Dental Health Care Hospital, Ankara, Turkey
| | - Ayse Isıl Orhan
- Division of Pediatric Dentistry, Ministry of Health, 75th Year Ankara Oral and Dental Health Centre, Ankara, Turkey
| | - Kaan Orhan
- Department of DentoMaxillofacial Radiology, Faculty of Dentistry, Ankara University, Ankara, Turkey
| | - Pelin Tufenkci
- Department of Endodontics, Faculty of Dentistry, Ankara University, Ankara, Turkey
| | - Sebnem Kursun
- Ministry of Health, Bolu Oral and Dental Health Care Hospital, Bolu, Turkey
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47
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Methodology for Morphometric Analysis of Modern Human Contralateral Premolars. J Comput Assist Tomogr 2016; 40:617-25. [DOI: 10.1097/rct.0000000000000417] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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48
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Versiani MA, Alves FRF, Andrade-Junior CV, Marceliano-Alves MF, Provenzano JC, Rôças IN, Sousa-Neto MD, Siqueira JF. Micro-CT evaluation of the efficacy of hard-tissue removal from the root canal and isthmus area by positive and negative pressure irrigation systems. Int Endod J 2015; 49:1079-1087. [DOI: 10.1111/iej.12559] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 10/08/2015] [Indexed: 11/30/2022]
Affiliation(s)
- M. A. Versiani
- Department of Restorative Dentistry; Dental School of Ribeirão Preto; University of São Paulo; Ribeirão Preto SP Brazil
| | - F. R. F. Alves
- Department of Endodontics; Faculty of Dentistry; Estácio de Sá University; Rio de Janeiro RJ Brazil
| | - C. V. Andrade-Junior
- Department of Health; Dentistry Division; Southwest State University of Bahia; Jequié Brazil
| | - M. F. Marceliano-Alves
- 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
| | - I. N. Rôças
- Department of Endodontics; Faculty of Dentistry; Estácio de Sá University; Rio de Janeiro RJ Brazil
| | - M. D. Sousa-Neto
- Department of Restorative Dentistry; Dental School of Ribeirão Preto; University of São Paulo; Ribeirão Preto SP Brazil
| | - J. F. Siqueira
- Department of Endodontics; Faculty of Dentistry; Estácio de Sá University; Rio de Janeiro RJ Brazil
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49
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Tanomaru-FIlho M, Torres FFE, Chávez-Andrade GM, Miano LM, Guerreiro-Tanomaru JM. Intermittent or continuous ultrasonically activated irrigation: micro-computed tomographic evaluation of root canal system cleaning. Clin Oral Investig 2015; 20:1541-6. [DOI: 10.1007/s00784-015-1645-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2014] [Accepted: 10/26/2015] [Indexed: 12/01/2022]
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50
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Pawar AM, Pawar S, Kfir A, Pawar M, Kokate S. Push-out bond strength of root fillings made with C-Point and BC sealer versus gutta-percha and AH Plus after the instrumentation of oval canals with the Self-Adjusting File versus WaveOne. Int Endod J 2015; 49:374-81. [DOI: 10.1111/iej.12455] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 03/26/2015] [Indexed: 11/25/2022]
Affiliation(s)
- A. M. Pawar
- Department of Conservative Dentistry and Endodontics; D Y Patil Dental School and Hospital; Pune Maharashtra India
| | - S. Pawar
- Department of Oral and Maxillofacial Surgery; D Y Patil Dental College & Hospital; Navi Mumbai Maharashtra India
| | - A. Kfir
- Department of Endodontology; Tel Aviv University; Tel Aviv Israel
| | - M. Pawar
- Department of Conservative Dentistry and Endodontics; Government Dental College & Hospital; Mumbai Maharashtra India
| | - S. Kokate
- Department of Conservative Dentistry and Endodontics; YMT Dental College & Hospital; Navi Mumbai Maharashtra India
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