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Vadera VP, Punia SK, Makandar SD, Bhargava R, Bapna P. A Comparative Evaluation of the Efficiencies of Different Rotary File Systems in Terms of Remaining Dentin Thickness Using Cone Beam Computed Tomography: An In Vitro Study. Cureus 2024; 16:e61566. [PMID: 38962599 PMCID: PMC11220893 DOI: 10.7759/cureus.61566] [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] [Accepted: 06/02/2024] [Indexed: 07/05/2024] Open
Abstract
AIM The aim of this study was to evaluate and compare the dentin thickness of the mesio-buccal canal of the lower first molar after canal preparation with three different rotary file systems using cone beam computed tomography (CBCT). METHODOLOGY TruNatomy (Dentsply Sirona, USA), 2Shape (Micro-Mega, France), and One Curve (Micro-Mega, France) were the three different rotary files that were employed. A total of 45 excised human permanent first mandibular molars were divided into Groups A (TruNatomy), B (2Shape), and C (One Curve) at random. To measure the residual dentin thickness at 3 mm, 5 mm, and 7 mm from the radiographic apex, the mesial root of the tooth was removed from the tooth, and a mesio-buccal canal was taken. Samples were mounted in clear acrylic resin and were subjected to a pre-instrumentation CBCT scan. The mesio-buccal canal was cleaned and shaped while maintaining the final mesio-buccal canal preparation of Group A - 26/0.04, Group B - 25/0.04, and Group C - 25/0.04. The samples were extensively irrigated with 3% sodium hypochlorite and 17% EDTA, and a post-instrumentation scan was performed on them. Statistics were used to determine the values from CBCT scans that were recorded for pre- and post-instrumentations. RESULTS The results showed that Group A had the greatest drop in dentin thickness, followed by Group B and Group C. The change in dentin thickness was greatest at 3 mm and 7 mm. CONCLUSION In contrast to TruNatomy and 2Shape rotary file systems, One Curve has the advantage of maintaining a tooth's thickness at 3 and 7 millimeters from the radiological apex. Since the TruNatomy file system removes more dentin than the other two combined, it should be used cautiously. Choosing the right instrument is crucial for cleaning and shaping during root canal preparation.
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Affiliation(s)
- Vivek P Vadera
- Conservative Dentistry and Endodontics, Darshan Dental College and Hospital, Udaipur, IND
| | - Sandhya K Punia
- Conservative Dentistry and Endodontics, Darshan Dental College and Hospital, Udaipur, IND
| | - Saleem D Makandar
- Conservative Dentistry and Endodontics, School of Dental Sciences, Health Campus Universiti Sains Malaysia, Kubang Kerian, MYS
| | - Rahul Bhargava
- Conservative Dentistry and Endodontics, Darshan Dental College and Hospital, Udaipur, IND
| | - Pradeep Bapna
- Conservative Dentistry and Endodontics, Pacific Dental College and Hospital, Udaipur, IND
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Comparing the amount of removed dentin thickness in root canal treated primary molar teeth using different instrumentation techniques: in-vitro study using CBCT. Eur Arch Paediatr Dent 2021; 23:255-260. [PMID: 34494202 DOI: 10.1007/s40368-021-00662-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Accepted: 08/24/2021] [Indexed: 10/20/2022]
Abstract
PURPOSE There is a clinical dilemma about root canal preparation for endodontic treatment of primary teeth. This study aimed to compare the amount of dentin removal in root canal treated primary molar teeth with three preparation techniques by cone-beam computed tomography (CBCT). METHODS A total of 39 s primary molar teeth were selected with a minimum of two-thirds of the entire root length. Access cavity was prepared and preliminary CBCT images were taken and viewed by Romexis programme. The wall thickness of the canal was measured in the danger zone at two axial cut sections of 1 and 2 mm below furcation. Then, the teeth were instrumented with three different methods as manual K-files (size 15-30), Gates glidden burs (in decreasing order of size #2 and #1 followed by hand k-files up to file number 25), and ProTaper rotary files. After canal preparation, the specimens were placed in the same position, and the canal wall thickness was remeasured. Data were analysed by using one-way ANOVA and Kruskal-Wallis tests (α = 0.05). RESULTS The amounts of removed dentin thickness was not significantly different among the three groups at two axial cut sections of 1 mm and 2 mm below furcation (P = 0.27 and 0.17, respectively). CONCLUSION Within the limitations of this study, the three instrumentation techniques used in primary molars were comparable regarding the amount of dentin removal.
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Baraba A, Cimic S, Basso M, Ionescu AC, Brambilla E, Miletić I. Microtensile Bond Strength of Fiber-Reinforced and Particulate Filler Composite to Coronal and Pulp Chamber Floor Dentin. MATERIALS (BASEL, SWITZERLAND) 2021; 14:2400. [PMID: 34063026 PMCID: PMC8124664 DOI: 10.3390/ma14092400] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/15/2021] [Accepted: 04/30/2021] [Indexed: 11/16/2022]
Abstract
This ex vivo study aimed to compare the microtensile bond strength of fiber-reinforced and particulate filler composite to coronal and pulp chamber floor dentin using a self-etching adhesive system. Coronal dentin of 40 human molar teeth was exposed by cutting occlusal enamel with a low-speed saw. Teeth were then randomly divided into two groups (n = 20). The first group was left as is, while in the second group, pulp chamber floor dentin was exposed by trepanation. After placement of a self-etching adhesive system (G-aenial Bond, GC, Tokyo, Japan), groups were further divided into two sub-groups (n = 10) according to the type of composite: fiber-reinforced composite (EP, everX Posterior, GC, Tokyo, Japan) and particulate filler composite (GP, G-aenial Posterior, GC, Tokyo, Japan). Then, composite blocks were built up. Sticks (1.0 × 1.0 mm2) were obtained from each specimen by sectioning, then microtensile bond strength (μTBS) test was performed. Statistical analysis included one-way ANOVA test and Student's t-test (p < 0.05). μTBS values were 22.91 ± 14.66 and 24.44 ± 13.72 MPa on coronal dentin, 14.00 ± 5.83 and 12.10 ± 8.89 MPa on pulp chamber floor dentin for EP and GP, respectively. Coronal dentin yielded significantly higher μTBS than pulp chamber floor dentin (p < 0.05), independently from the tested composites.
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Affiliation(s)
- Anja Baraba
- Department of Endodontics and Restorative Dentistry, School of Dental Medicine, Gunduliceva 5, 10 000 Zagreb, Croatia;
| | - Samir Cimic
- Department of Removable Prosthodontics, School of Dental Medicine, Gunduliceva 5, 10 000 Zagreb, Croatia;
| | - Matteo Basso
- Department of Dentistry, Galeazzi Institute, University of Milan, via R. Galeazzi 4, 20161 Milan, Italy;
| | - Andrei C. Ionescu
- Department of Biomedical, Surgical and Dental Sciences, Oral Microbiology and Biomaterials Laboratory, University of Milan, via Pascal, 36, 20133 Milan, Italy; (A.C.I.); (E.B.)
| | - Eugenio Brambilla
- Department of Biomedical, Surgical and Dental Sciences, Oral Microbiology and Biomaterials Laboratory, University of Milan, via Pascal, 36, 20133 Milan, Italy; (A.C.I.); (E.B.)
| | - Ivana Miletić
- Department of Endodontics and Restorative Dentistry, School of Dental Medicine, Gunduliceva 5, 10 000 Zagreb, Croatia;
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Miguéns-Vila R, Martín-Biedma B, Varela-Patiño P, Ruíz-Piñón M, Castelo-Baz P. Vertical Root Fracture initiation in curved roots after root canal preparation: A dentinal micro-crack analysis with LED transillumination. J Clin Exp Dent 2017; 9:e1218-e1223. [PMID: 29167712 PMCID: PMC5694151 DOI: 10.4317/jced.54227] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 08/09/2017] [Indexed: 11/05/2022] Open
Abstract
Background One of the causative factors of root defects is the increased friction produced by rotary instrumentation. A high canal curvature may increase stress, making the tooth more susceptible to dentinal cracks. The purpose of this study was to evaluate dentinal micro-crack formation with the ProTaper NEXT and ProTaper Universal systems using LED transillumination, and to analyze the micro-crack generated at the point of maximum canal curvature. Material and Methods 60 human mandibular premolars with curvatures between 30-49° and radii between 2-4 mm were used. The root canals were instrumented using the Protaper Universal® and Protaper NEXT® systems, with the aid of the Proglider® system. The obtained samples were sectioned transversely before subsequent analysis with LED transillumination at 2 mm and 8 mm from the apex and at the point of maximum canal curvature. Defects were scored: 0 for no defects; and 1 for micro-cracks. Results Root defects were not observed in the control group. The ProTaper NEXT system caused fewer defects (16.7%) than the ProTaper Universal system (40%) (P<0.05). The ProTaper Universal system caused significantly more micro-cracks at the point of maximum canal curvature than the ProTaper NEXT system (P<0.05). Conclusions Rotary instrumentation systems often generate root defects, but the ProTaper NEXT system generated fewer dentinal defects than the ProTaper Universal system. A higher prevalence of defects was found at the point of maximum curvature in the ProTaper Universal group. Key words:Curved root, Micro-crack, point of maximum canal curvature, ProTaper NEXT, ProTaper Universal, Vertical root fracture.
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Affiliation(s)
- Ramón Miguéns-Vila
- DDS, University of Santiago de Compostela; Master of Endodontics, Entrerrios Street, no number, 15702, Santiago de Compostela
| | - Benjamín Martín-Biedma
- PhD, University of Santiago de Compostela; Master of Endodontics, Entrerrios Street, no number, 15702, Santiago de Compostela
| | - Purificación Varela-Patiño
- PhD, University of Santiago de Compostela; Master of Endodontics, Entrerrios Street, no number, 15702, Santiago de Compostela
| | - Manuel Ruíz-Piñón
- PhD, University of Santiago de Compostela; Master of Endodontics, Entrerrios Street, no number, 15702, Santiago de Compostela
| | - Pablo Castelo-Baz
- DDS, PhD, University of Santiago de Compostela; Master of Endodontics, Entrerrios Street, no number, 15702, Santiago de Compostela
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Prasanthi NN, Rambabu T, Sajjan GS, Varma KM, Satish RK, Padmaja M. A comparative evaluation of the increase in root canal surface area and canal transportation in curved root canals by three rotary systems: A cone-beam computed tomographic study. J Conserv Dent 2016; 19:434-9. [PMID: 27656062 PMCID: PMC5026103 DOI: 10.4103/0972-0707.190003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Aim: The aim of this study was to measure the increase in root canal surface area and canal transportation after biomechanical preparation at 1, 3, and 5 mm short of the apex with three different rotary systems in both continuous rotary and reciprocating rotary motions. Materials and Methods: Sixty freshly extracted human mandibular molars with mesial root canal curvatures between 20° and 30° were included in the study. Teeth were randomly distributed into three groups (n = 20). Biomechanical preparations were done in all the mesial canals. In Group 1, instrumentation was done with ProTaper universal rotary files, Group 2, with K3XF rotary files, and Group 3, with LSX rotary files. Each group was further subdivided into subgroups A and B (n = 10) where instrumentation was done by continuous rotary and reciprocating rotary techniques, respectively. Increase in root canal surface area and canal transportation was measured using the preoperative and postoperative cone-beam computed tomography scans. Statistical Analysis: The data were analyzed by one-way ANOVA followed by Tukey pairwise multiple comparison tests. Results: Increase in root canal surface area was significantly more (P < 0.05) in ProTaper and K3XF groups when compared to LSX group. Canal transportation was significantly more (P < 0.05) in ProTaper group when compared to K3XF and LSX groups. There was no significant difference (P > 0.05) in increase of root canal surface area and canal transportation between continuous rotary and reciprocating rotary techniques for ProTaper Universal, K3XF and LSX groups. Conclusion: LSX rotary system showed minimal increase of root canal surface area and minimal canal transportation when compared to ProTaper and K3XF rotary systems.
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Affiliation(s)
- Nalam Nvd Prasanthi
- Department of Conservative Dentistry and Endodontics, Vishnu Dental College, West Godavari, Andhra Pradesh, India
| | - Tanikonda Rambabu
- Department of Conservative Dentistry and Endodontics, Vishnu Dental College, West Godavari, Andhra Pradesh, India
| | - Girija S Sajjan
- Department of Conservative Dentistry and Endodontics, Vishnu Dental College, West Godavari, Andhra Pradesh, India
| | - K Madhu Varma
- Department of Conservative Dentistry and Endodontics, Vishnu Dental College, West Godavari, Andhra Pradesh, India
| | - R Kalyan Satish
- Department of Conservative Dentistry and Endodontics, Vishnu Dental College, West Godavari, Andhra Pradesh, India
| | - M Padmaja
- Department of Conservative Dentistry and Endodontics, Vishnu Dental College, West Godavari, Andhra Pradesh, India
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Kurthukoti AJ, Sharma P, Swamy DF, Shashidara R, Swamy EB. Computed Tomographic Morphometry of the Internal Anatomy of Mandibular Second Primary Molars. Int J Clin Pediatr Dent 2015; 8:202-7. [PMID: 26628855 PMCID: PMC4647040 DOI: 10.5005/jp-journals-10005-1313] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Accepted: 03/25/2014] [Indexed: 11/23/2022] Open
Abstract
UNLABELLED Need for the study: The most important procedure for a successful endodontic treatment is the cleaning and shaping of the canal system. Understanding the internal anatomy of teeth provides valuable information to the clinician that would help him achieve higher clinical success during endodontic therapy. AIMS To evaluate by computed tomography-the internal anatomy of mandibular second primary molars with respect to the number of canals, cross-sectional shape of canals, cross-sectional area of canals and the root dentin thickness. MATERIALS AND METHODS A total of 31 mandibular second primary molars were subjected to computed-tomographic evaluation in the transverse plane, after mounting them in a prefabricated template. The images, thus, obtained were analyzed using De-winter Bio-wizard® software. RESULTS All the samples demonstrated two canals in the mesial root, while majority of the samples (65.48%) demonstrated two canals in the distal root. The cross-sectional images of the mesial canals demonstrated a round shape, while the distal canals demonstrated an irregular shape. The root dentin thickness was highly reduced on the distal aspect of mesial and mesial aspect of distal canals. CONCLUSION The mandibular second primary molars demonstrated wide variation and complexities in their internal anatomy. A thorough understanding of the complexity of the root canal system is essential for understanding the principles and problems of shaping and cleaning, determining the apical limits and dimensions of canal preparations, and for performing successful endodontic procedures. How to cite this article: Kurthukoti AJ, Sharma P, Swamy DF, Shashidara R, Swamy EB. Computed Tomographic Morphometry of the Internal Anatomy of Mandibular Second Primary Molars. Int J Clin Pediatr Dent 2015;8(3):202-207.
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Affiliation(s)
- Ameet J Kurthukoti
- Professor and Head, Department of Pedodontics and Preventive Dentistry, Jodhpur Dental College and General Hospital, Jodhpur, Rajasthan, India
| | - Pranjal Sharma
- Ex-Postgraduate Student, Department of Pedodontics and Preventive Dentistry, Coorg Institute of Dental Sciences, Virajpet, Karnataka, India
| | - Dinesh Francis Swamy
- Senior Lecturer, Department of Pedodontics and Preventive Dentistry, Vydehi Institute of Dental Sciences, Bengaluru, Karnataka, India
| | - R Shashidara
- Professor and Head, Department of Oral Pathology, Coorg Institute of Dental Sciences, Virajpet, Karnataka, India
| | - Elaine Barretto Swamy
- Lecturer, Department of Pedodontics and Preventive Dentistry, Goa Dental College and Hospital, Bambolim, Goa, India
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