scholarly journals Comparative Analysis of Root Canal Dentin Removal Capacity of Two NiTi Endodontic Reciprocating Systems for the Root Canal Treatment of Primary Molar Teeth. An In Vitro Study

2022 ◽  
Vol 11 (2) ◽  
pp. 338
Author(s):  
Vicente Faus-Llácer ◽  
Dalia Pulido Ouardi ◽  
Ignacio Faus-Matoses ◽  
Celia Ruiz-Sánchez ◽  
Álvaro Zubizarreta-Macho ◽  
...  
Keyword(s):  
Root Canal ◽  
Study Groups ◽  
Ct Scans ◽  
Micro Ct ◽  
Second Molar ◽  
Removal Capacity ◽  
Canal Systems ◽  
Molar Teeth ◽  
Root Canal Dentin ◽  
Reciprocating Systems

The objective of the present study was to evaluate and compare the dentin removal capacity of Endogal Kids and Reciproc Blue NiTi alloy endodontic reciprocating systems for root canal treatments in primary second molar teeth via a micro-computed tomography (micro-CT) scan. Materials and Methods: Sixty root canal systems in fifteen primary second molar teeth were chosen and classified into one of the following study groups: A: EK3 Endogal Kids (n = 30) (EDG) and B. R25 Reciproc Blue (n = 30) (RB). Preoperative and postoperative micro-CT scans were uploaded into image processing software to analyze the changes in the volume of root canal dentin using a mathematical algorithm that enabled progressive differentiation between neighboring pixels after defining and segmenting the root canal systems in both micro-CT scans. Volumetric variations in the root canal system and the root canal third were calculated using a t-test for independent samples or a nonparametric Mann–Whitney–Wilcoxon test. Results: Statistically significant differences (p = 0.0066) in dentin removal capacity were found between the EDG (2.89 ± 1.26 mm3) and RB (1.22 ± 0.58 mm3) study groups for the coronal root canal third; however, no statistically significant differences were found for the middle (p = 0.4864) and apical (p = 0.6276) root canal thirds. Conclusions: Endogal and Reciproc Blue NiTi endodontic reciprocating systems showed similar capacity for the removal of root canal dentin, except for the coronal root canal third, in which the Reciproc Blue NiTi endodontic reciprocating system preserved more root canal dentin tissue.

scholarly journals Comparative Analysis of Ease of Removal of Fractured NiTi Endodontic Rotary Files from the Root Canal System—An In Vitro Study

2022 ◽  
Vol 19 (2) ◽  
pp. 718
Author(s):  
Vicente Faus-Matoses ◽  
Eva Burgos Ibáñez ◽  
Vicente Faus-Llácer ◽  
Celia Ruiz-Sánchez ◽  
Álvaro Zubizarreta-Macho ◽  
...  
Keyword(s):  
Root Canal ◽  
Study Groups ◽  
Wilcoxon Test ◽  
Ct Scans ◽  
Micro Ct ◽  
Micro Computed Tomography ◽  
Canal System ◽  
The Us ◽  
Canal Systems ◽  
Root Canal System

This study aimed at analyzing and comparing the ease of removal of fractured nickel–titanium (NiTi) endodontic rotary files from the root canal system between the ultrasonic tips and the Endo Rescue appliance removal systems, as well as comparing the volume of dentin removed between ultrasonic tips and the Endo Rescue appliance using a micro-computed tomography (micro-CT) scan. Material and Methods: Forty NiTi endodontic rotary files were intentionally fractured in 40 root canal systems of 20 lower first molar teeth and distributed into the following study groups: A: Ultrasonic tips (n = 20) (US) and B: Endo Rescue device (n = 20) (ER). Preoperative and postoperative micro-CT scans were uploaded into image processing software to analyze the volumetric variations of dentin using an algorithm that enables progressive differentiation between neighboring pixels after defining and segmenting the fractured NiTi endodontic rotary files and the root canal systems in both micro-CT scans. A non-parametric Mann–Whitney–Wilcoxon test or t-test for independent samples was used to analyze the results. Results: The US and ES study groups saw 8 (1 mesiobuccal and 7 distal root canal system) and 3 (distal root canal system) fractured NiTi endodontic rotary files removed, respectively. No statistically significant differences were found in the amount of dentin removed between the US and ER study groups at the mesiobuccal (p = 0.9109) and distal root canal system (p = 0.8669). Conclusions: Ultrasonic tips enable greater ease of removal of NiTi endodontic rotary files from the root canal system, with similar amounts of dentin removal between the two methods.

scholarly journals Root Canal Configuration Evaluation on the Basis of Sectioning and Clearing Techniques

2014 ◽  
Vol 1 (1) ◽  
pp. 18-25
Author(s):  
S. M. Farooq ◽  
Tahir Ali Khan ◽  
Owais Farooq
Keyword(s):  
Root Canal ◽  
Great Influence ◽  
Study Groups ◽  
Type I ◽  
Second Molar ◽  
Group Type ◽  
Secondary Canal ◽  
Molar Teeth ◽  
Pass Through

Objectives:Determination of Root canal configuration of maxillary first and second molar teeth was the aim of this study.Study design: An in vitro experimental study.Place and duration of the study:Study was conducted in Gandhara University for a period of six month.Materials and Methods:Specimens were analyzed by sectioning and clearing techniques for evaluation of the pattern and configuration of roots. Dye penetration was the criteria which were then evaluated through microscope.Results:In clearing group, type-I canals are 18% more than sectioning group. While type-II was reversely i.e. 19% more in sectioning group than clearing group.Conclusion:Difference in both the study groups could be mainly due to failure of dye to pass through sclerosed or minute diameter secondary canal in clearing group. This study verifies that method of research has great influence on the results.

scholarly journals Root Canal Configuration of the Maxillary Second Permanent Molars in Pakistani Subpopulation

2021 ◽  
Vol 30 (03) ◽  
pp. 209-214
Author(s):  
Mansoor Khan Khan ◽  
◽  
Alia Ahmed ◽  
Muhammad Qasim Javed
Keyword(s):  
Root Canal ◽  
Dental Morphology ◽  
Cross Sectional ◽  
Second Molar ◽  
Morphological Variations ◽  
Molar Teeth ◽  
Permanent Molars ◽  
Root Canal System ◽  
International University

OBJECTIVE: The aim of the study is to assess the variations in the root canal configuration of maxillary second permanent molars in the Pakistani subpopulation by using different clinical aids in vivo. METHODOLOGY: The Cross-sectional analytical study was conducted from April to October 2018 at the College of Dentistry, Riphah International University, Pakistan. The root canal configurations of Maxillary second molars were evaluated in 95 adult patients that presented to the Operative Department, after obtaining consent. After access cavity preparation the orifices were identified and cross checked using 2.5x magnification and different clinical tests. Data analysis was done by utilizing SPSS version 23. RESULTS: Out of the 95 teeth 6(6.3%) teeth had a single canal, 7(7.4%) teeth had two canals, 58(61.1%) teeth had three canals and 24(25.3%) teeth had four canals. Age-wise analysis of the frequency of different canals showed that prevalence of molars with three canals was significantly higher in the subjects with age between 41 and 50 years. Conclusion: Overall, the study noted four morphological variations in the root canal configuration of Maxillary second molar teeth in Pakistani subpopulation. Hence, while executing the endodontic treatment in the maxillary second molars a thorough assessment of the root canal system should be carried out. The results of the study can guide Pakistani dentists. KEYWORDS: Permanent Maxillary second molar, Dental Morphology, Endodontics, Pakistan

scholarly journals MAXILLARY SECOND MOLAR

2018 ◽  
Vol 25 (07) ◽  
pp. 981-986
Author(s):  
Amira Shafqat ◽  
Bader Munir ◽  
Mustafa Sajid
Keyword(s):  
Root Canal ◽  
Local Population ◽  
Root Canal Treatment ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Second Molar ◽  
Root Canals ◽  
Single Root ◽  
Molar Teeth ◽  
Treat All

Introduction: It is important for a dental practitioner to have a clear understandingof the root canal morphology and its variations to perform successful root canal treatment.The inability to identify and adequately treat all canals of root canal system may contribute tothe failure of root canal treatment. Objectives: Clinically determine the frequency or numbersof root canals per tooth in the maxillary second molar teeth in the local population. Setting:Department of Operative Dentistry in Punjab Dental Hospital / de`Montmorency College ofDentistry, Lahore. Study Design: Randomized Control Trial. Study Period: 25th May 2013 to24th November 2013 (6 months). Results: This was a Cross sectional survey of 80 patients withsymptomatic irreversible pulpitis in maxillary second molar teeth in patients undergoing rootcanal treatment. The results showed that five (6.25%) patients had single root canal, seventeen(21.25%) patients had 2 root canals, forty (50%) patients had 3 root canals, seventeen (21.25%)patients had 4 root canals and one (1.25 %) patient had 5 root canals per tooth. In patientwith five canals, single root canal was present in distobuccal and palatal root each while threeroot canals were present in mesiobuccal root as MB-1, MB-2 and MB-3 canal. Conclusion:Local population have a lot of variations in root canal anatomy in second molar. So preclinicalknowledge can increase the success rate of root canal treatment.

scholarly journals The Influence of Brushing Movement on Geometrical Shaping Outcomes: A Micro-CT Study

2020 ◽  
Vol 10 (14) ◽  
pp. 4805 ◽  
Author(s):  
Mario Alovisi ◽  
Damiano Pasqualini ◽  
Giorgia Carpegna ◽  
Allegra Comba ◽  
Edoardo Moccia ◽  
...  
Keyword(s):  
Root Canal ◽  
Micro Ct ◽  
Micro Computed Tomography ◽  
System A ◽  
Glide Path ◽  
Before And After ◽  
Centroid Shift ◽  
Canal Shaping ◽  
Post Hoc ◽  
Reciprocating Systems

Brushing motion has been proposed for endodontic single-file reciprocating systems to eliminate coronal interferences, but it may hesitate in a less conservative root canal shaping. The aim of the study was to compare the maintenance of the original root canal anatomy using the WaveOne Gold (WOG) technique with or without a brushing motion. Sixty extracted human mandibular first molars were selected. Manual canal scouting and mechanical glide path were performed. Samples were randomized into two groups (n = 30): WOG Primary was used to shape the mesio-lingual canals without (NB group) or with (B group) an intentional brushing motion. Specimens were scanned with micro-computed tomography (micro-CT) before and after instrumentation in order to match the volumes. Increases in canal volume and surface area were measured. Centroid shift and thickness of removed dentine from the inner curvature were assessed at the furcation, 1.5 mm and 3 mm apically from the furcation, and in relation to the point of maximum curvature. Data were analyzed by one-way ANOVA and post-hoc Student–Newmann–Keuls tests (p < 0.05). No brushing technique resulted in being significantly associated with a better maintenance of the canal anatomy, especially in the coronal third (p < 0.05). When using the WOG system, a no-brushing technique resulted in less invasive shaping, reducing the risk of stripping.

scholarly journals Cone beam computed tomographic survey of the mesiobuccal root canal anatomy in the maxillary first and second molar teeth of an Iranian population

2018 ◽  
Vol 12 (03) ◽  
pp. 422-427 ◽  
Author(s):  
Negar Khosravifard ◽  
Zahra Dalili Kajan ◽  
Homayoon Hasanpoor
Keyword(s):  
Root Canal ◽  
Iranian Population ◽  
Cone Beam ◽  
Chi Square ◽  
Second Molar ◽  
Root Canals ◽  
Kappa Test ◽  
Computed Tomography Images ◽  
Molar Teeth ◽  
The Relationship

ABSTRACT Objective: The objective of this study was to evaluate the mesiobuccal (MB) root canal(s) anatomy of the maxillary first and second molar teeth in an Iranian population. Materials and Methods: Cone beam computed tomography images of 280 teeth (145 maxillary first molars and 135 maxillary second molars) were analyzed to determine the number and types of the MB root canals. Chi-square test was used to examine the relationship between the number of MB canals and sex and Mann–Whitney analysis was used to define the relationship between the number of canals and the buccopalatal dimension of the MB roots. The level of interobservers' agreement was assessed with Kappa test. Results: Nearly 44.8% of the first molar and 18.5% of the second molar teeth had an additional MB canal (MB2). Types I and III of root canals had the highest frequencies. There was no significant relationship between the number of MB root canals of maxillary first and second molars and sex (P = 0.829). The relationship between the buccopalatal dimension of the MB roots and the number of root canals was shown to be statistically significant (P = 0.001). Conclusion: Presence of MB2 had a relatively high frequency, especially in the maxillary first molars. The mean buccopalatal dimension of the MB roots showed to be interrelated with the number of root canals.

A micro-computed tomographic (micro-CT) analysis of the root canal morphology of maxillary third molar teeth

2018 ◽  
Vol 215 ◽  
pp. 83-92 ◽  
Author(s):  
Iwona M. Tomaszewska ◽  
Bartosz Leszczyński ◽  
Andrzej Wróbel ◽  
Tomasz Gładysz ◽  
Hal F. Duncan
Keyword(s):  
Root Canal ◽  
Third Molar ◽  
Micro Ct ◽  
Computed Tomographic ◽  
Maxillary Third Molar ◽  
Ct Analysis ◽  
Molar Teeth ◽  
Root Canal Morphology ◽  
Canal Morphology

scholarly journals Presence of Metallic Microfragments on Dentinal Walls and Instrument Defects following Root Canal Preparation

2017 ◽  
Vol 18 (4) ◽  
pp. 270-276
Author(s):  
Carlos Estrela ◽  
Daniel de A Decurcio ◽  
Fernando B Barletta ◽  
Caroline Solda ◽  
Marina C Langaro ◽  
...  
Keyword(s):  
Elemental Composition ◽  
Root Canal ◽  
Structural Defects ◽  
Root Canal Preparation ◽  
Root Canals ◽  
Rotary Instruments ◽  
Molar Teeth ◽  
Reciprocating Instruments ◽  
Reciprocating Systems ◽  
Better Than

ABSTRACT Aim To determine the presence of metallic microfragments and their elemental composition in the dentinal walls of root canals following preparation using different endodontic instruments and to assess the active cutting edges of instruments with regard to structural defects. Materials and methods A total of 108 molar teeth were selected and prepared using different endodontic instruments. Teeth were randomly divided into nine groups of 12 teeth each, according to the instruments employed: Manual systems – K-FlexoFile, K-File, and Hedstroem; rotary systems – ProTaper Next, Mtwo, BioRaCe; and reciprocating systems – Reciproc, Unicone, and WaveOne. Both root canals and instruments were assessed using scanning electron microscopy, and the elemental composition of metallic microfragments was determined using energy-dispersive X-ray spectroscopy. Results Metallic microfragments were found in the groups prepared with both manual and reciprocating instruments, with no statistically significant differences between groups, thirds, or presence of metallic microfragments (p ≥ 0.05). Moreover, all groups presented structural defects in both new and used instruments; however, rotary instruments (ProTaper Next, Mtwo 702, BioRaCe) were the ones with the lowest number of defects, at statistically significant differences in comparison with other instruments (p < 0.05). Conclusion The presence of metallic microfragments on dentinal walls following root canal preparation was associated with manual and reciprocating instrumentation. Furthermore, rotary instruments were the ones with the lowest number of defects. Considering the outcomes measured in this study, rotary instruments performed better than the other two groups, as they were associated with the lowest number of metallic microfragments and structural defects. Clinical significance During root canal preparation, operative procedures may induce changes to the root canal shape, as well as the release of metallic fragments resulting from the action of instruments on dentinal walls. Therefore, it is important to determine, among the different techniques used for this purpose, which ones are least susceptible to this occurrence. How to cite this article Solda C, Langaro MC, Machado AN, Vanni JR, de A Decurcio D, Silva JA, Estrela C, Barletta FB. Presence of Metallic Microfragments on Dentinal Walls and Instrument Defects following Root Canal Preparation. J Contemp Dent Pract 2017;18(4):270-276.

scholarly journals Marginal gaps and internal voids after root-end filling using three calcium silicate-based materials: A Micro-CT analysis

2021 ◽  
Vol 32 (4) ◽  
pp. 1-7
Author(s):  
Alexander Pompermayer Jardine ◽  
Ketsia Fernanda Váz Rosa ◽  
Felipe Barros Matoso ◽  
Ramiro Martins Quintana ◽  
Renata Grazziotin-Soares ◽  
...  
Keyword(s):  
Root Canal ◽  
Calcium Silicate ◽  
Statistical Difference ◽  
Root Canal Treatment ◽  
Ct Scans ◽  
Micro Ct ◽  
Air Entrapment ◽  
Cavity Preparation ◽  
Ct Analysis

Abstract This study evaluated the 3D quality of root-end filling, assessing the presence (volume and percentage) of marginal gaps and internal voids formed after retro-filling with three calcium silicate-based materials: MTA Angelus (Angelus Soluçoes Odontologicas, Londrina, PR, Brazil), Biodentine (Septodont Ltd., Saint Maur-des-Faussés, France) and Neo MTA Plus (Avalon Biomed Inc., Bradenton, Florida, US). Thirty human, extracted, single rooted teeth were used. Orthograde root canal treatment, root resection (3mm shorter than the apex) and retrograde cavity preparation with ultrasonic tips were performed. Teeth were divided into 3 groups (n =10 each) following a stratified randomization according to the initial volume of the root-end cavity. After retrofilling, samples were stored for 7 days. Then, two rounds of micro-CT scans were performed: soon after root-end preparation (with the cavity still empty) and 7 days after root-end filling. Marginal gaps, internal voids volume (mm3 and %), as well as, the overall defects (sum of gaps and voids) were evaluated. Statistics compared the three groups in relation to those defects. There was not statistical difference between groups regarding the marginal gaps (P≥ 0.05), the internal voids (P≥ 0.05), and the overall defects (P≥ 0.05). Median (mm3) and % of overall air-entrapment defects (gaps and/or voids) was: 0.004mm3 and 1.749% for MTA Angelus, 0.018mm3 and 6.660% for Biodentine, and 0.012mm3 and 4.079% for Neo MTA Plus. All materials had gaps and/or voids. No differences were found between MTA Angelus, Biodentine and Neo MTA Plus.

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