scholarly journals Computed tomography evaluation of root canal transportation using ProTaper, Race and Sendoline rotary systems: an ex vivo study

2018 ◽  
Vol Volume 10 ◽  
pp. 93-98
Author(s):  
eshaghali saberi ◽  
bita aramesh
Keyword(s):  
Computed Tomography ◽  
Root Canal ◽  
Ex Vivo ◽  
Canal Transportation ◽  
Ex Vivo Study

scholarly journals Root Canal Morphology and Configuration of 118 Mandibular First Molars by Means of Micro–Computed Tomography: An Ex Vivo Study

2016 ◽  
Vol 42 (4) ◽  
pp. 610-614 ◽  
Author(s):  
Thomas Gerhard Wolf ◽  
Frank Paqué ◽  
Maximilian Zeller ◽  
Brita Willershausen ◽  
Benjamín Briseño-Marroquín
Keyword(s):  
Computed Tomography ◽  
Root Canal ◽  
Ex Vivo ◽  
Micro Computed Tomography ◽  
Root Canal Morphology ◽  
Ex Vivo Study ◽  
Canal Morphology

Feasibility of Cone-beam Computed Tomography in Detecting Lateral Canals before and after Root Canal Treatment: An Ex Vivo Study

2017 ◽  
Vol 43 (6) ◽  
pp. 1014-1017 ◽  
Author(s):  
Thiago Oliveira Sousa ◽  
Bassam Hassan ◽  
Hesam Mirmohammadi ◽  
Hagay Shemesh ◽  
Francisco Haiter-Neto
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Ex Vivo ◽  
Root Canal Treatment ◽  
Cone Beam ◽  
Before And After ◽  
Ex Vivo Study

Accuracy of Cone-beam Computed Tomography in the Detection of a Second Mesiobuccal Root Canal in Endodontically Treated Teeth: An Ex Vivo Study

2015 ◽  
Vol 41 (10) ◽  
pp. 1678-1681 ◽  
Author(s):  
Hesam Mirmohammadi ◽  
Lamees Mahdi ◽  
Poerya Partovi ◽  
Abbasali Khademi ◽  
Hagay Shemesh ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Ex Vivo ◽  
Cone Beam ◽  
Endodontically Treated Teeth ◽  
Ex Vivo Study

scholarly journals Canal transportation caused by one single-file and two multiple-file rotary systems: A comparative study using cone-beam computed tomography

2019 ◽  
Vol 32 (2) ◽  
pp. 57-62
Author(s):  
Eshagh Ali Saberi ◽  
Narges Farhad Mollashahi ◽  
Forugh Farahi
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Ex Vivo ◽  
Cone Beam ◽  
Single File ◽  
Significant Difference ◽  
Single Operator ◽  
Canal Transportation ◽  
The Mean ◽  
Ex Vivo Study

Aim: This ex-vivo study aimed to compare canal transportation in mesio-buccal canal of mandibular first molars prepared with Mtwo and Revo-S multi-file and Neoniti single-file nickel[18TD$DIF]—titanium (Ni—Ti) rotary systems using cone-beam computed tomography (CBCT). Methodology: CBCTscans were obtained from 60 extracted mandibular first molars and the teeth were randomly divided into three groups. Mesio-buccal canal of mesial root was prepared with Revo-S, Neoniti or Mtwo rotary systems according to the instructions of the manufacturers. Postoperative CBCT scans were also obtained. A single operator performed canal preparations while another operator blinded to the group allocation of teeth did the measurements. Data were analyzed using SPSS 20. The mean and standard deviation (SD) of the amount of canal transportation were calculated and compared between the groups using the Friedman test ([19TD$DIF]P 0.05). Results: No significant difference was noted in canal transportation among the groups in the middle and apical third ([20TD$DIF]P > 0.05). The rotary single-file instrument caused significantly greater canal transportation in the coronal third. Conclusion: No significant difference exists among different rotary systems in the amount of canal transportation caused in the middle and apical third of the mesio-buccal canal in mandibular first molars. Although all rotary files caused some degrees of canal transportation, the rotary single-file instrument caused significantly greater canal transportation than the multiple-file sequences in the coronal third.

scholarly journals Root Canal Morphology and Configuration of 179 Maxillary First Molars by Means of Micro–computed Tomography: An Ex Vivo Study

2015 ◽  
Vol 41 (12) ◽  
pp. 2008-2013 ◽  
Author(s):  
Benjamín Briseño-Marroquín ◽  
Frank Paqué ◽  
Karolin Maier ◽  
Brita Willershausen ◽  
Thomas Gerhard Wolf
Keyword(s):  
Computed Tomography ◽  
Root Canal ◽  
Ex Vivo ◽  
Micro Computed Tomography ◽  
Root Canal Morphology ◽  
Ex Vivo Study ◽  
Canal Morphology

scholarly journals Comparative Evaluation of Root Canal Transportation by Three NiTi Single-File Systems in Curved Canals: A Cone Beam Computed Tomography Study

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Eshaghali Saberi ◽  
Narges Farhad-Mollashahi ◽  
Shima Bijari ◽  
Mohammad Daryaeian
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Ex Vivo ◽  
File Systems ◽  
Cone Beam ◽  
Single File ◽  
Significant Difference ◽  
Canal Transportation ◽  
Level Of Significance

Introduction. This study is aimed at evaluating root canal transportation in the mesiobuccal canal of mandibular first molars prepared with One Shape, Reciproc, and M-One nickel titanium (NiTi) single-file rotary systems using cone beam computed tomography (CBCT). Materials and Methods. In this ex vivo study, CBCT scans of 45 extracted human mandibular first molars with 20–40° curvature were obtained. The teeth were randomly divided into three groups (n=15) for preparation of the mesiobuccal canal with One Shape, Reciproc, and M-One rotary systems according to the manufacturers’ instructions. CBCT scans were obtained again after canal preparation. Changes caused by preparation in the coronal, middle, and apical thirds were determined on CBCT scans and analyzed using the Kruskal–Wallis test at P≤0.05 level of significance. Results. No significant difference was noted in the amount of canal transportation among the three groups (P>0.05). M-One caused greater transportation in the apical third compared with Reciproc and One Shape, and One Shape caused greater transportation in the coronal third compared with other groups, although its magnitude was less than 0.3 mm. Conclusion. Reciproc, One Shape, and M-One are not significantly different in terms of canal transportation.

scholarly journals Root Canal Penetration of a Sodium Hypochlorite Mixture Using Sonic or Ultrasonic Activation

2014 ◽  
Vol 25 (6) ◽  
pp. 489-493 ◽  
Author(s):  
Marta Sáinz-Pardo ◽  
Roberto Estevez ◽  
Óliver Valencia de Pablo ◽  
Giampiero Rossi-Fedele ◽  
Rafael Cisneros
Keyword(s):  
Sodium Hypochlorite ◽  
Root Canal ◽  
Ex Vivo ◽  
Positive Pressure ◽  
Ultrasonic Activation ◽  
Penetration Length ◽  
Working Length ◽  
Closed Systems ◽  
Canal Shaping ◽  
Ex Vivo Study

The purpose of this ex vivo study was to determine, in "open" and "closed" systems, whether the design has an influence on the penetration length of sodium hypochlorite mixed with a radiopaque contrast medium, measured in millimeters, when delivered using positive pressure (PP) and using sonic (SI) or passive ultrasonic (PUI) activation. Sixty single-rooted teeth were divided into two groups: open and closed systems (n=30). Root canal shaping was performed to a working length of 17 mm. The samples were divided into three sub-groups (n=10) according to irrigant delivery and activation: PP, and SI or PUI activation. By using radiographs, penetration length was measured, and vapor lock was assessed. For the closed group, the penetration distance means were: PP 15.715 (±0.898) mm, SI 16.299 (±0.738) mm and PUI 16.813 (±0.465) mm, with vapor lock occurring in 53.3% of the specimens. In the open group, penetration to 17 mm occurred in 97.6% of the samples, and no vapor lock occurred. Irrigant penetration and distribution evaluation using open and closed systems provide significantly different results. For closed systems, PUI is the most effective in delivering the irrigant to working length, followed by SI.

scholarly journals Comparison of Air-driven vs Electric Torque Control Motors on Canal Centering Ability by ProTaper NiTi Rotary Instruments

2013 ◽  
Vol 14 (1) ◽  
pp. 71-75 ◽  
Author(s):  
Mina Zarei ◽  
Maryam Javidi ◽  
Mahdi Erfanian ◽  
Mahdi Lomee ◽  
Farzaneh Afkhami
Keyword(s):  
Cross Sections ◽  
Root Canal ◽  
Ex Vivo ◽  
Controlled Trial ◽  
Acrylic Resin ◽  
Torque Control ◽  
Rotary Instruments ◽  
Canal Transportation ◽  
Group 2 ◽  
Niti Rotary Instruments

ABSTRACT Aim Cleaning and shaping is one of the most important phases in root canal therapy. Various rotary NiTi systems minimize accidents and facilitate the shaping process. Todays NiTi files are used with air-driven and electric handpieces. This study compared the canal centering after instrumentation using the ProTaper system using Endo IT, electric torque-control motor, and NSK air-driven handpiece. Materials and methods This ex vivo randomized controlled trial study involved 26 mesial mandibular root canals with 10 to 35° curvature. The roots were randomly divided into 2 groups of 13 canals each. The roots were mounted in an endodontic cube with acrylic resin, sectioned horizontally at 2, 6 and 10 mm from the apex and then reassembled. The canals were instrumented according to the manufacturer's instructions using ProTaper rotary files and electric torque-control motors (group 1) or air-driven handpieces (group 2). Photographs of the cross-sections included shots before and after instrumentation, and image analysis was performed using Photoshop software. The centering ability and canal transportation was also evaluated. Repeated measurement and independent t-test provided statistical analysis of canal transportation. Results The comparison of the rate of transportation toward internal or external walls between the two groups was not statistically significant (p = 0.62). Comparison of the rate of transportation of sections within one group was not significant (p = 0.28). Conclusion Use of rotary NiTi file with either electric torquecontrol motor or air-driven handpiece had no effect on canal centering. Clinical significance NiTi rotary instruments can be used with air-driven motors without any considerable changes in root canal anatomy, however it needs the clinician to be expert. How to cite this article Zarei M, Javidi M, Erfanian M, Lomee M, Afkhami F. Comparison of Air-driven vs Electric Torque Control Motors on Canal Centering Ability by ProTaper NiTi Rotary Instruments. J Contemp Dent Pract 2013;14(1):71-75.

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