Apical Transportation of ProGlider and ProTaper Next Activated with Different Motions

2016 ◽  
Vol 39 (12) ◽  
pp. 625-628
Author(s):  
Hakan Arslan ◽  
Damla O. Kirici ◽  
Ahmet D. Uygun ◽  
Ruslan Khalilov ◽  
Yahya Güven ◽  
...  
Keyword(s):  
Root Canal ◽  
Rotation Group ◽  
Reciprocating Motion ◽  
Movement Kinematics ◽  
Root Canals ◽  
Continuous Rotation ◽  
Apical Transportation ◽  
Canal Transportation

Purpose The aim of this study was to investigate the apical transportation of the ProGlider and ProTaper Next using 3 different motions (150° clockwise [CW]; 0° counter clockwise [CCW], 270° CW-30° CCW; and [360° CW] continuous rotation). Materials and Methods 36 simulated, curved, plastic training blocks were randomly distributed into 3 groups for treatment according to the movement kinematics used for ProGlider (Dentsply Maillefer) followed by ProTaper Next (Dentsply Maillefer) instruments (n = 12): 150° CW-30° CCW, 270° CW-30° CCW, and 360° CW (continuous rotation). Pre- and post-instrumentation photographs were taken from the root canals in a standardized manner. Root canal transportation was calculated at 1, 2, 3, 4, and 5 mm from the apical terminus of the canal. Data were analyzed using a Kruskal-Walis H test (p = .05). Results At the 1- and 2-mm levels, both reciprocating motions (150° CW-30° CCW and 270° CW-30° CCW) resulted in less transportation than those of continuous rotation (p<.05). However, there were no significant differences between the groups at the 3-, 4-, and 5-mm levels (p>.05). Conclusions Both reciprocating motions were found to have less canal transportation than the continuous rotation group at the 1- and 2-mm levels. This is the first study about the use of the ProGlider and ProTaper Next activated by different motions. Reciprocating motion can be beneficial for ProGlider and ProTaper Next to reduce transportation of root canals.

scholarly journals Evaluation of Curved Canal Transportation Using the Neoniti Rotary System with Reciprocal Motion: A Comparative Study

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Mohsen Aminsobhani ◽  
Arvin Rezaei Avval ◽  
Fatemeh Hamidzadeh
Keyword(s):  
Root Canal ◽  
Lateral View ◽  
Two Dimensions ◽  
Reciprocating Motion ◽  
Root Canals ◽  
Rotation Method ◽  
Continuous Rotation ◽  
Before And After ◽  
Canal Transportation ◽  
The Ideal

The ideal root canal preparation is where the original canal morphology is maintained during the biomechanical preparation. Preparation of curved canals has always been a challenge to clinicians. Better results have been suggested for a single NiTi instrument with reciprocating motion than the conventional continuous rotation method in the preparation of curved root canals. Although the Neoniti rotary system is not suggested to be used with reciprocal motion, running a pilot study, we found that it could be possible. The present study aimed to investigate if shaping curved canals using the Neoniti rotary system with reciprocal motion leads to better results in terms of root canal transportation. One hundred acrylic j-shape canal simulator endoblocks were used in this study. Five preparation sequences were applied: GPS followed by A1#20 (GPS + A1#20), GPS followed by A1#20 and then A1#25 (GPS + A1#20 + A1#25), GPS followed by A1#25 (GPS + A1#25), hand file followed by A1#20 (hand file + A1#20), and GPS followed by A1#20 (with reciprocal motion) (GPS + A1#20(reciprocal)). Pictures were taken from blocks once before and once after preparation from two dimensions. Before-and-after pictures were superimposed in Photoshop software. Measurements were performed in Digimizer. The number of autoreverses and pecking motions was recorded after reviewing the recorded videos. Data were analyzed in SPSS, version 26. A p value of less than 0.05 was considered statistically significant. The group GPS + A1#20 + A1#25 had more transportation compared with the others, at apical, middle, and coronal thirds not only in the frontal view but also in the lateral view. Other groups were not significantly different. The number of peckings and autoreverses was significantly less when A1#25 was used after GPS and A1#20. When A1#20 was used with reciprocal motion, it had less peckings compared with the same file with continuous rotation, and no autoreverses were observed in that group. Using Neoniti files with reciprocal motion might result in less instrument fatigue and favorable results, with respect to canal anatomy preservation. Using A1#20 before A1#25 also will decrease the stress on the instrument during preparation. However, this may lead to significantly more canal transportation.

scholarly journals Root Canal Transportation after Root Canal Preparation with ProTaper Next, WaveOne Gold, and Twisted Files

2020 ◽  
Vol 9 (11) ◽  
pp. 3661
Author(s):  
Wojciech Eliasz ◽  
Kinga Kubiak ◽  
Wojciech Poncyljusz ◽  
Anna Surdacka
Keyword(s):  
Computed Tomography ◽  
Root Canal ◽  
Mean Value ◽  
Root Canal Preparation ◽  
Movement Kinematics ◽  
Root Canals ◽  
Adaptive Motion ◽  
Computed Tomography Scans ◽  
Canal Transportation ◽  
The Mean

Background: Root canal preparation during endodontic treatment may be associated with various complications, including a change in the original pathway of the root canal lumen. The aim of our study was to determine whether files of similar sizes that use various movement kinematics (rotary, reciprocal, adaptive motion) cause root canal transportation, and whether the differences between such systems are statistically significant. Methods: The degree of root canal transportation (DT) was calculated with the use of computed tomography scans for 3 groups of teeth (for each group: n = 20) in which the root canals were prepared using either rotary (ProTaper Next—PTN), reciprocal (WaveOne Gold—WOG), or adaptive movement (Twisted Files—TF) instruments. Results: For rotary ProTaper Next instruments, the mean value of the DT index was 0.0795 (SD = 0.0179) for 3 mm from the apex, 0.09 (SD = 0.0262) for 6 mm from the apex, and 0.106 (SD = 0.0221) for 9 mm from the apex. For reciprocal WaveOne Gold Primary instruments, the mean value of the DT index was 0.0355 (SD = 0.015) for 3 mm from the apex, 0.061 (SD = 0.02) for 6 mm from the apex, and 0.08 (SD = 0.25) for 9 mm from the apex. For Twisted Files, the mean value of the DT index was 0.05 (SD = 0.03) for 3 mm from the apex, 0.092 (SD = 0.17) for 6 mm from the apex, and 0.08 (SD = 0.02) for 9 mm from the apex. Conclusions: The use of PTN, WOG, and TF files resulted in root canal transportation to a different degree. The use of rotary PTN files produced the most transported preparation, whereas the use of WOG files produced the conservative root canal preparation that allowed the retention of the original shape of the root canal.

scholarly journals CBCT Evaluation of Changes in Root Canal Geometry Induced by the Chemical Structure of NiTi Alloys of Three Rotary Systems

2020 ◽  
Vol 71 (6) ◽  
pp. 170-177
Author(s):  
Sanda Ileana Cimpean ◽  
Adrian Mihai Varvara ◽  
Smaranda Dana Buduru ◽  
Ioana Sofia Ciutrila ◽  
Mihaela Carmen Hedesiu ◽  
...  
Keyword(s):  
Root Canal ◽  
Primary Wave ◽  
Cross Sectional ◽  
Voxel Size ◽  
Homogeneous Groups ◽  
Group Iii ◽  
Root Canals ◽  
Group I ◽  
Continuous Rotation ◽  
Canal Transportation

Preservation of the root canal anatomy is very important for the success of endodontic treatment.Properly instrumentation of curvet root canals is influenced by flexibility of endodontic instruments which depends on composition and thermomechanical treatment of the metallic alloy. The aim of the current study was to compare the changes in root canal geometry after the preparation with two systems that work in reciprocating motion (Reciproc25, Primary Wave One) and another one in continuous rotation (One Shape), using CT measurements. Forty-five canals of extracted molars with curvatures ranging from 9 to 40 degrees were chosen for this study. The canals were divided, according to the canal curvature into three homogeneous groups and were prepared with three different rotary systems: group I with Reciproc file 25.08 (VDW, Munich, Germany), group II with Wave One Primary 25.08 (Dentsply-Maillefer Ballaigues, Switzerland) and group III with One Shape 25.06 (Micro Mega, Bensancon, France).All groups were scanned pre and post instrumentation, using NewTo 3G CBCT (QR, Italy, FOV, 0.16mm voxel size). The following parameters were assessed after measurements on cross-sectional CBCT images: the centering ability, diameter change, canal transportation. All instruments maintain the original canal curvature well, resulting in no significant differences of their centering ability (P]0.05) and canal transportation (P]0.05). The highest increase in diameter of canal was observed with Primary Wave One, which was not statistically significant for the entire canal (P]0.05). Instrumentation with Reciproc was faster than instrumentation with One Shape and Wave One,but the differences were not statistically significant (P]0.05). All systems perform safe and proper canal preparations and can be used in root canal treatment of curved canals.

scholarly journals Apical transportation in simulated root canals prepared using HyFlex CM, WaveOne Gold and manual technique

2020 ◽  
Vol 24 (3) ◽  
pp. 334-339
Author(s):  
Gabriela Bonacina ◽  
Ana Carolina Neis Cifali ◽  
Rafaela Chies Hartmann ◽  
Maína De Aguiar Pinto ◽  
Maristela Gutierrez De Borba ◽  
...  
Keyword(s):  
Descriptive Statistics ◽  
Reciprocating Motion ◽  
Root Canal Preparation ◽  
Root Canals ◽  
Continuous Rotation ◽  
Apical Transportation ◽  
Before And After ◽  
Imagej Software ◽  
Post Hoc ◽  
Main Effects

Objective: To assess the apical transportation in simulated root canals with different curvature angles prepared using manual instrumentation and rotary and reciprocating motions. Methods: Sixty simulated root canals were prepared using manual instrumentation (Flexofile K-file) (MT), continuous rotation (HyFlex CM) (HF), and reciprocating motion (WaveOne Gold) (WG). A trained operator prepared the canals, and the apical enlargement was standardized up to a #25 file in all systems tested. Two different curvature angles of the simulated root canals were tested: 70° and 50°. Overlapping photographs of the simulated root canals, before and after root canal preparation, were used to measure the apical transportation (mm), using the ImageJ software. Descriptive statistics (mean and standard deviation) were analyzed and the groups were compared with two-way ANOVA followed by Tukey’s post-hoc, with α=5%. Results: There was a statistically significant interaction between the effects of group and angle in the apical transportation (F = 3.740; p = 0.031). Simple main effects analysis showed that HyFlex CM produced a significantly lower apical transportation when compared to WaveOne Gold (p = 0.02) and the manual technique (p < 0.01), regardless of the angle. However, there were no differences between WaveOne Gold and manual technique in canals with the 70° angle (p>0.05). The group with the highest mean apical transportation was the MT, with 0.0917 mm, followed by WG and HF, with 0.0633 and 0.0325, respectively. Conclusion: Simulated root canals prepared with rotary motion (HyFlex CM) showed the lowest apical transportation, followed by the reciprocating motion (WaveOne Gold). The manual technique showed the most unfavorable results, with the highest apical transportation.

scholarly journals Aspects of the biomechanical root canal treatment – step-back technique. In vitro study

2015 ◽  
Vol 61 (4) ◽  
pp. 304-310
Author(s):  
Monica Voiculeanu ◽  
◽  
Ioana Suciu ◽  
Bogdan Dimitriu ◽  
Mihaela Grigore ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Root Canal ◽  
In Vitro Study ◽  
Final Shape ◽  
Root Canals ◽  
Apical Transportation ◽  
Canal Transportation ◽  
Preparation Errors ◽  
Treatment Step

Evaluation of post-operative root canal shape have been performed using simulated root canals in resin blocks and magnification analysis (stereomicroscope) have been used for the study. The technique selected was stepback with conventional hand stainless steel instruments. The aim of studies on post-operative root canal shape is to evaluate the conicity, taper and flow and maintenance of original canal shape and to record the degree and frequency of straightening, apical transportation, ledging, zipping, teardrops, elbows. Ideal preparation forms for the root canals can be possible without any preparation errors with circular incorporation of the original canal cross section – if the technique starts with adequately precurved negotiating files. Preparation errors (zips, canal transportation, apical perforations, elbows, teardrops, etc) can occur mostly when stainless steel hand instruments (K-file) are used for moderate to severe curved of root canals, especially K-file with cutting tips and not prebent. Ideal preparation shape without any preparation errors could be a final shape and adequate shape even for conventional hand files and step-back technique. For the first area of step back technique, even for the begining, we can usually use various prebent stainless steel hand instruments for pathfinding. In many cases, conventional hand instruments produces adequate shapes for the root canals. For this final shape, is important to use adequately precurved negotiating files. Conventional stainless stell are rigid enough that thay should be precurved to match the curvature of the canal during instrumentation. Conventional hand instruments has two basic design, Kerr-file and Kerr-reamer. Kerr-file could be used to enlarge the canal with a longitudinal filing action. Kerr-reamer may used in a same fashion, but is much more flexible instrument than K-file. Noncutting tip follow the canal better than instruments with active tips – clinically usefull element.

scholarly journals Evaluation of Apically Extruded Debris Using Continuous Rotation, Reciprocation, or Adaptive Motion

2018 ◽  
Vol 29 (3) ◽  
pp. 245-248 ◽  
Author(s):  
Ozgur Genc Sen ◽  
Burcu Bilgin ◽  
Sibel Koçak ◽  
Baran Can Sağlam ◽  
Mustafa Murat Koçak
Keyword(s):  
Root Canal ◽  
Calculated Data ◽  
Dry Weight ◽  
Distilled Water ◽  
Reciprocating Motion ◽  
Root Canals ◽  
Continuous Rotation ◽  
Adaptive Motion ◽  
The Difference ◽  
Root Canal Instrumentation

Abstract The aim of this study was to compare the amount of apically extruded debris during root canal instrumentation using ProTaper Next (PTN), Twisted File (TF) Adaptive, and Reciproc instruments. Forty-five extracted human maxillary canines were selected and randomly assigned into 3 groups. The root canals were prepared using PTN instruments with continuous rotation (n=15), TF Adaptive instruments with adaptive motion (n=15), Reciproc instruments with reciprocating motion (n=15). During the preparations, canals were irrigated using distilled water and material extruded apically was collected in pre-weighed Eppendorf tubes. After a 5-day drying period in an incubator, the tubes were weighed and the dry weight of the extruded debris was calculated. Data distributions were assessed via the Shapiro-Wilk test, and groups were compared via the Kruskal-Wallis test. The greatest amount of debris extruded by TF Adaptive and the least by PTN, but the difference was insignificant between groups (p=0.259). All instrumentation systems were associated with debris extrusion.

scholarly journals Cone-beam Computed Tomographic Analysis of Canal Transportation and Centering Ability of Three Different Nickel-Titanium Rotary File Systems

2021 ◽  
Vol 9 (D) ◽  
pp. 30-36
Author(s):  
Balaji Sopanrao Kapse ◽  
Pradnya S. Nagmode ◽  
Jayshree Ramkrishna Vishwas ◽  
Hrishikesh B. Karpe ◽  
Harshal V. Basatwar ◽  
...  
Keyword(s):  
Root Canal ◽  
File System ◽  
File Systems ◽  
Nickel Titanium ◽  
Root Canals ◽  
Apical Transportation ◽  
Significant Difference ◽  
Canal Transportation ◽  
Curved Root Canals

AIM: The aim of the present study was to compare the canal transportation and centering ability of three rotary nickel-titanium file systems, HyFlex controlled memory, Revo-S, and Mtwo in moderately curved root canals using computed tomography (CT). MATERIALS AND METHODS: Thirty freshly extracted single-rooted teeth having curved root canals with at least 10°–20° of curvature were selected. The teeth were divided into three experimental groups of ten each. After preparation with HyFlex CM (Coltene-Whaledent, Allstetten, Switzerland), Revo-S (Micro-Mega, Besançon, France), and Mtwo (VDW, Munich, Germany) all teeth were scanned using CT to determine the root canal shape. Pre- and post-instrumentation images were obtained at three levels, 3 mm apical, 9 mm middle, and 15 mm coronal above the apical foramen were compared using CT software. Amount of transportation and centering ability were assessed. The three groups were statistically compared with analysis of variance and post-hoc Tukey’s honestly significant difference test. RESULTS: Least apical transportation and higher centering ability were seen in HyFlex CM file system in all the three sections followed by Revo-S, Mtwo file system showed maximum transportation. CONCLUSIONS: According to the present in-vitro study, we can conclude that HyFlex CM rotary file systems showed least canal transportation and highest centering ability as compared to Revo-S and Mtwo file system but there was no statistically significant difference among these file systems (p > 0.05) at coronal, middle, and apical level of root canal.

scholarly journals Centering ability, canal transportation and surface modifications of ProTaper F2 and F3 used in continuous rotation and reciprocating motion in curved root canals

2019 ◽  
Vol 60 (1) ◽  
pp. 8-16
Author(s):  
Jader Vinicius Andreazza ◽  
Miguel Assis Martins Dos Santos ◽  
Lucas Siqueira Pinheiro ◽  
Júlia Eick Iglesias ◽  
Fernanda Ulmann Lopez ◽  
...  
Keyword(s):  
Surface Modifications ◽  
Surface Wear ◽  
Reciprocating Motion ◽  
Exact Test ◽  
Root Canals ◽  
Computed Tomography Images ◽  
Continuous Rotation ◽  
Before And After ◽  
Canal Transportation ◽  
Curved Root Canals

Aims: To evaluate the centering ability, canal transportation and surface modifications of F2 and F3 ProTaper Universal (PT) instruments used in continuous rotation (CR) and reciprocating motion (RM) for the preparation of curved root canals. Material and methods: sixty mesiobuccal root canals of upper molars with curvatures between 25º and 35° were divided into three groups: I - PT in CR up to F3; II - PT in RM up to F3; III - F2 and F3 PT instruments in RM. Cone Beam Computed Tomography images were obtained before and after instrumentation. The scans were superimposed to determine the centering ability and canal transportation in apical, medium and cervical thirds. The apical 6 mm of the F2 and F3 files were evaluated under Scanning Electron Microscope before and after 1, 3 and 6 uses to assess distortion, surface wear and fracture. The statistical analysis of centering ability and canal transportation were performed by Kruskal–Wallis and ANOVA, respectively. The scores for deformation and surface wear were compared using ANOVA. Fisher’s exact test was used for the evaluation of instrument fracture. Results: there were no significant differences between groups regarding centering ability and canal transportation, as well as, for distortion, surface wear and fracture (p>.05). Conclusion: F2 and F3 instruments can be used for curved canals instrumentation. However, when used for entire canal preparation, F2 and F3 should be discarded after single use.

scholarly journals Comparative evaluation of shaping ability of trunatomy and protaper gold files in curved canals using cone?beam computed tomography: An invitro study

2021 ◽  
Vol 6 (2) ◽  
pp. 101-105
Author(s):  
Kadam Krutika Kiran ◽  
Vagarali Hemant ◽  
Pujar Madhu A ◽  
Tamase Aishwarya S ◽  
Sahana Umesh
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Cone Beam ◽  
Human Teeth ◽  
Root Canals ◽  
Before And After ◽  
Canal Transportation ◽  
Group 2 ◽  
Shaping Ability

This study aimed to compare the canal transportation and canal centering ability in the preparation of curved root canals after instrumentation with TruNatomy (TN) (TN; Dentsply Sirona, Maillefer, Ballaigues, Switzerland) and ProTaper Gold (PG) (PG; Dentsply, Tulsa Dental Specialties, Tulsa, OK, USA) files using cone‑beam computed tomography (CBCT). 30 Single rooted extracted human teeth with root curvature ranging from 20-30° according to Schneider’s method were selected. Teeth with any visible cracks or fractures, calcifications, previous root canal treatments were excluded. The teeth were randomly assigned into two groups i.e. Group 1-TN and Group 2-PG (n = 15 each). The teeth were instrumented according to manufacturer’s guidelines for both the groups. Canals were scanned using a CBCT scanner before and after preparation to evaluate the transportation and centering ratio at 3 mm, 5 mm, and 7 mm from the apex. The data analysis was done using SPSS software and the test used was independent sample t test for comparison between the 2 groups.Data obtained suggested that TN group presented lesser canal transportation at the middle third of the root. The PG group showed better centering abitily at apical third of the root canal when both the groups were compared. TN resulted in less transportation than PG at the middle third, and PG showed better centering ability at the apical third. Overall, both systems safely prepared root canals, causing minimal errors.

scholarly journals Cleaning Effectiveness of a Reciprocating Single-file and a Conventional Rotary Instrumentation System

2016 ◽  
Vol 10 (1) ◽  
pp. 704-713 ◽  
Author(s):  
Fredson Marcio Acris de Carvalho ◽  
Leonardo Cantanhede de Oliveira Gonçalves ◽  
André Augusto Franco Marques ◽  
Vanessa Alves ◽  
Carlos Eduardo da Silveira Bueno ◽  
...  
Keyword(s):  
Apical Part ◽  
Reciprocating Motion ◽  
Root Canals ◽  
Single File ◽  
Rotary Instruments ◽  
Continuous Rotation ◽  
Kolmogorov Smirnov ◽  
Rotation Motion ◽  
La Jolla ◽  
Smirnov Test

Objective: To compare cleaning effectiveness by histological analysis of a reciprocating single-file system with ProTaper rotary instruments during the preparation of curved root canals in extracted teeth. Methods: A total of 40 root canals with curvatures ranging between 20 - 40 degrees were divided into two groups of 20 canals. Canals were prepared to the following apical sizes: Reciproc size 25 (n=20); ProTaper: F2 (n=20). The normal distribution of data was tested by the Kolmogorov-Smirnov test and the values obtained for the test (Mann-Whitney U test, P < .05) were statistically analyzed using the GraphPad InStat for the Mac OS software (GraphPad Software, La Jolla, CA, USA). Results: There were no significant differences in remaining debris (P > .05) between the two groups. Conclusion: The application of reciprocating motion during instrumentation did not result in increased debris when compared with continuous rotation motion, even in the apical part of curved canals. Both instruments resulted in debris in the canal lumen, irrespective of the movement kinematics applied.

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