Force and vibration analysis in biomechanical preparation of root canals using reciprocating endodontic file system: In vitro study

2021 ◽  
pp. 095441192110442
Author(s):  
Vinod Singh Thakur ◽  
Pavan Kumar Kankar ◽  
Anand Parey ◽  
Arpit Jain ◽  
Prashant Kumar Jain
Keyword(s):  
Root Canal ◽  
Vibration Analysis ◽  
File System ◽  
In Vitro Study ◽  
Root Canal Preparation ◽  
Root Canals ◽  
Improper Use ◽  
Four Levels ◽  
Root Canal Instrumentation

The shaping and cleaning of the root canal are very important in root canal treatment. The excessive force and vibration during biomechanical preparation of the root canal may result in failure of the endodontic file. In this study, force and vibration analysis was carried out during root canal preparation. The samples of human extracted (premolar) teeth were provided by the College of Dental Science and Hospital. Endodontic instruments for reciprocating motion, such as the WaveOne Gold file system, had been used for root canal preparation. Force and vibration signals were recorded by dynamometer and accelerometer, respectively. The acquired signals were denoised using the db4 (SWT denoising 1-D) wavelet. Four levels of decomposition were carried out for each signal. The signal denoising technique was used to remove unwanted noise from the acquired signal. FESEM analysis was used to visualize the levels of severity of endodontic files during the cleaning and shaping of the root canal. In most of the cases, the failure occurred due to the improper use of the root canal instrumentation. The optimum amount of force was used to avoid the file failure and provided the proper instrumentation. The curve fitting regression model was used to find the interdependency between force and vibration.

scholarly journals Apical Debris Extrusion during Root Canal Preparation with ProTaper Next and Mani Silk Rotary Systems: An in vitro Study

2016 ◽  
Vol 1 (2) ◽  
pp. 66-69
Author(s):  
Madhusudhana Koppolu ◽  
Chinni Suneelkumar ◽  
Anumula Lavanya ◽  
Ram Basam
Keyword(s):  
Social Sciences ◽  
Root Canal ◽  
In Vitro Study ◽  
Root Canal Preparation ◽  
Initial Weight ◽  
Root Canals ◽  
The Social ◽  
Significant Difference ◽  
Final Weight

ABSTRACT Aim To evaluate the amount of apically extruded debris after the preparation of root canals in extracted human single-rooted teeth using ProTaper Next and Mani Silk rotary systems. Materials and methods A total of 40 freshly extracted human single-rooted teeth with mature apices and straight root canal were selected and similar length were instrumented with ProTaper Next and Mani Silk rotary systems. Debris and irrigant extruded during instrumentation were collected into preweighed Eppendorf tubes. The Eppendorf tubes were then stored in an incubator at 68°C for 5 days. The weight of the extruded debris was determined by subtracting the initial weight from the final weight. Statistical analysis Data analysis was carried out using the Statistical Package for the Social Sciences (SPSS) version 20. Postweights were compared with an independent t test for 2 groups. Results Both instruments were associated with apical debris extrusion. There was no significant difference between the ProTaper Next and Mani Silk instruments in terms of mean weight of apically extruded debris. Conclusion There was no significant difference among the groups in terms of mean weight of apically extruded debris. How to cite this article Koppolu M, Basam R, Suneelkumar C, Lavanya A. Apical Debris Extrusion during Root Canal Preparation with ProTaper Next and Mani Silk Rotary Systems: An in vitro Study. J Oper Dent Endod 2016;1(2):66-69.

scholarly journals Apically extruded debris associated with ProTaper Next, ProTaper Gold and TruNatomy systems: An in vitro study

2021 ◽  
Vol 15 (1) ◽  
pp. 30-34
Author(s):  
Neslihan Yılmaz Çırakoglu ◽  
Yağız Özbay
Keyword(s):  
Root Canal ◽  
In Vitro Study ◽  
The Other ◽  
Root Canal Preparation ◽  
Root Canals ◽  
System P ◽  
Apical Extrusion ◽  
Significant Difference ◽  
Final Weight

Background. This research aimed to investigate and compare the amount of apically extruded debris after root canal preparation using ProTaper Next, ProTaper Gold, and TruNatomy systems. Methods. Forty-five extracted mandibular premolar teeth with single canals with similar lengths were used. The root canals were prepared using ProTaper Next (Dentsply Maillefer, Ballaigues, Switzerland), ProTaper Gold (Dentsply Maillefer, Ballaigues, Switzerland), or TruNatomy (Dentsply Maillefer, Ballaigues, Switzerland) files. Apically extruded debris during preparation was gathered into preweighed Eppendorf tubes. Then the Eppendorf tubes were incubated at 70°C for five days. The Eppendorf tubes were weighed again to determine their final weight plus the extruded debris. Results. The TRN system resulted in significantly less debris extrusion than the PTN system (P<0.05). There was no significant difference between the PTN and PTG groups and between the PTG and TRN groups (P>0.05). Conclusion. All the instrumentation systems caused apical extrusion of debris. However, the TRN system resulted in significantly less debris extrusion than the other systems.

scholarly journals Intratubular Enterococcus faecalis viability assessment following root canal instrumentation with rotary and reciprocating systems via fluorescence microscopy

2020 ◽  
Vol 14 (4) ◽  
pp. 214-217
Author(s):  
Jamileh Ghoddusi ◽  
Ehsan Arian ◽  
Maryam Golmohammadi ◽  
Maryam Gharechahi ◽  
Siavash Moushekhian
Keyword(s):  
Enterococcus Faecalis ◽  
In Vitro Study ◽  
Sampling Procedure ◽  
T Test ◽  
Root Canals ◽  
Paired Samples ◽  
Viable Bacteria ◽  
Root Canal Instrumentation ◽  
Reciprocating Systems

Background. The present in vitro study aimed to compare the effectiveness of the WaveOne and ProTaper Gold systems in removing the Enterococcus faecalis biofilm. Methods. Thirty-eight mandibular premolars were selected. The root canals were assigned to standard control (canals serially enlarged with ProTaper Gold S1-S2-F1-F2, n=15) and experimental (canals enlarged with Primary WaveOne file, n=15) groups. Following the instrumentation procedure, the root canals underwent a sampling procedure, and the colonyforming unit (CFU) counts were determined. The samples were also evaluated under a fluorescent microscope to evaluate viable bacteria. The data were analyzed using independent samples t test and paired samples t test. Results. The results showed that, compared with the ProTaper group, the WaveOne group exhibited the least viable bacteria (P=0.004). Conclusion. It was concluded that comparison with the ProTaper Gold rotary system, the WaveOne reciprocating file is more successful in reducing intratubular viable bacteria counts.

scholarly journals Comparative Evaluation of The Efficacy Of Rotary file system (Kedo-S) Vs Hand K-Files In Root Canal Preparation Of Primary Teeth Using Cone Beam Computed Tomography (CBCT) - An In Vitro Study

2019 ◽  
Vol 22 (2) ◽  
pp. 197-202
Author(s):  
Abhinaya Srinivas ◽  
LGanesh Jeevanandan ◽  
Lavanya Govindaraju ◽  
Erulappan Muthu Ganapathi Subramanian
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Primary Teeth ◽  
File System ◽  
In Vitro Study ◽  
Cone Beam ◽  
Root Canal Preparation ◽  
Group I ◽  
Shaping Ability

Objective: To evaluate the efficacy of rotary Kedo-S and hand K-files in shaping ability in primary canines using cone beam computed tomography. Materials and Methods: Thirty extracted primary maxillary and mandibular canines were selected. Using cone beam computed tomography the teeth were scanned before instrumentation. In Group I, the teeth were prepared using stainless steel K file up to the size of 40. In the Group II teeth, U1 size Kedo-S rotary file was used in crown down technique. The instrumented teeth were scanned again with cone beam computed tomography and the images were compared. Results: The canal taper was more conical for rotary Kedo-S files as compared to K-files, which was statistically significant. Conclusion:  Canal preparation with Rotary files resulted in more conical canals when compared to manual instrumentation in primary teeth that contributes to more uniform obturation.KeywordsCBCT; Hand K-files; Kedo-S file system; Primary teeth; Pulpectomy; Rotary instrumentation.

Comparison of apical debris extrusion during root canal preparation in primary molars using different file systems: an in vitro study

2021 ◽  
Author(s):  
Davood Mohammadi ◽  
Majid Mehran ◽  
Roland Frankenberger ◽  
Newsha BabeveyNejad ◽  
Morteza Banakar ◽  
...  
Keyword(s):  
Root Canal ◽  
File Systems ◽  
In Vitro Study ◽  
Vitro Study ◽  
Primary Molars ◽  
Root Canal Preparation

scholarly journals Effectiveness of hand and Mtwo™ instruments in preparing oval-shaped root canals: in vitro study

2016 ◽  
Vol 21 (2) ◽  
Author(s):  
Fernanda Diederichs Coutinho ◽  
Renata Dornelles Morgental ◽  
Simone Bonato Luisi ◽  
Fabiana Vieira Vier-Pelisser ◽  
Patricia Maria Poli Kopper
Keyword(s):  
Root Canal ◽  
In Vitro Study ◽  
Root Apex ◽  
Conventional Technique ◽  
Basic Sequence ◽  
Preparation Technique ◽  
Root Canals ◽  
Canal Area ◽  
Significant Difference

Objective: This study evaluated through stereomicroscopy the effectiveness of hand and rotary instrumentation techniques, either isolated or combined, in the preparation of oval-shaped root canals. Materials and method: Thirty single-rooted human mandibular incisors were selected. After endodontic access and coronal preflaring, teeth were mounted in a modified Bramante muffle and then sectioned transversely at 3 and 6 mm from the root apex. Images of each section were made under a stereomicroscope at 30× magnification. Teeth were reassembled in the muffle and divided into three groups (n=10) according to the root canal preparation technique: GI - rotary preparation with Mtwo™ basic sequence (10/.04; 15/.05; 20/.06; 25/.06), followed by Mtwo™ complementary instruments (30/.05; 35/.04; 40/.04); GII - rotary preparation with Mtwo™ basic sequence, complemented by hand instruments (#30, #35 and #40); GIII - hand instrumentation using the conventional technique (#10 to #40). All instruments were used in brushing motion. The muffles were separated again so that new images of each section could be obtained. The following parameters were evaluated in pre- and postoperative images: root canal area; perimeter; mesiodistal (MD) and buccolingual (BL) diameters; and mesial (M) and distal (D) wall thickness. Next, the values measured in post- and preoperative images were subtracted forcomparison of experimental groups. Data were analyzed using the Kruskal-Wallis test (α=0.05). Results: No significant difference between groups was observed for all parameters. Conclusion: There was no difference among hand, rotary, or combined instrumentation; all techniques were able to increase root canal area, perimeter, and diameter in MD and BL directions. Moreover, the amount of dentin wearon proximal root canal walls was similar for all tested groups.

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