Reduction of Hard-tissue Debris Accumulation during Rotary Root Canal Instrumentation by Etidronic Acid in a Sodium Hypochlorite Irrigant

2012 ◽  
Vol 38 (5) ◽  
pp. 692-695 ◽  
Author(s):  
Frank Paqué ◽  
Dan-Krister Rechenberg ◽  
Matthias Zehnder
Keyword(s):  
Sodium Hypochlorite ◽  
Root Canal ◽  
Etidronic Acid ◽  
Hard Tissue ◽  
Debris Accumulation ◽  
Root Canal Instrumentation

scholarly journals Root Dentine Strain Generation during Root Canal Instrumentation with Rotation and Reciprocation Motions

2020 ◽  
Vol 10 (2) ◽  
pp. 66-70
Author(s):  
Bnar O. Hama faraj ◽  
Raid F. Salman
Keyword(s):  
Sodium Hypochlorite ◽  
Root Canal ◽  
Strain Measurement ◽  
Statistical Difference ◽  
Strain Gauges ◽  
Student’S T ◽  
Rotation Motion ◽  
Root Canal Instrumentation ◽  
Dentine Surface ◽  
Student’S T Test

The aim of the study is to measure and compare strain generated on root dentine surface by two different instrumentation motions. Thirty extracted single canal premolars were used in this study which randomly was divided into two groups, one group was prepared with ProTaper NEXT X2 file in rotation motion, and the second group was prepared by WaveOne GOLD primary file in reciprocation motion, the canals were irrigated during canal preparation by 2 ml of sodium hypochlorite and 17% EDTA gel was used. Strain measurement was performed by strain gauges and a digital strain output reader, data were recorded every 5 s for 50 s. The results of this study have shown that WaveOne GOLD had higher mean 0.7308±0.41106 than ProTaper next 0.5385±0.39904 which means WaveOne GOLD generates greater strain than ProTaper NEXT. However, according to Student’s t-test between two groups there is no statistical difference between them. Based on the results of this study, there was no difference between the two motions; both motions generated strain on root dentine surface.

scholarly journals Micro-computed tomographic evaluation of the effect of the final apical size prepared by rotary nickel-titanium files on the removal efficacy of hard-tissue debris

2018 ◽  
Vol 46 (6) ◽  
pp. 2219-2229 ◽  
Author(s):  
Ke Xu ◽  
Juan Wang ◽  
Ke Wang ◽  
Nan Gen ◽  
Jin Li
Keyword(s):  
Root Canal ◽  
Shape Recognition ◽  
Nickel Titanium ◽  
Micro Computed Tomography ◽  
Root Canal Preparation ◽  
Hard Tissue ◽  
Root Canals ◽  
Computed Tomographic ◽  
Debris Accumulation ◽  
Before And After

Objective This study was performed to compare the removal efficacy of hard-tissue debris in mandibular first molars prepared to various apical sizes. Methods The mesial root canals of 40 extracted mandibular first molars were prepared by rotary nickel-titanium files to an apical size of #25/0.04 (Group #2504), #30/0.04 (Group #3004), #35/0.04 (Group #3504), and #40/0.04 (Group #4004). Irrigation was performed with 5.25% NaOCl and 17% EDTA. Micro-computed tomography was used to scan the samples before and after root canal preparation. Remnant hard-tissue debris was identified, quantified, and visualized three-dimensionally using shape recognition and image superimposition analysis, and the debris was mapped to its location. Results After preparation, 11.67%±2.99% of the root canals contained hard-tissue debris in Group #2504, 8.00%±2.71% in Group #3004, 7.17%±2.88% in Group #3504, and 4.51%±1.61% in Group #4004. The amount of accumulated hard-tissue debris was significantly less in Group #4004 than in the other groups. However, there were no significant differences between Groups #3004 and #3504. Conclusions An increased final apical size resulted in significantly lower debris accumulation. However, no root canal in any group was completely free from hard-tissue debris, and debris was mostly found in the isthmus of the mesial root canals.

scholarly journals Root canal debridement efficacy of heated sodium hypochlorite in conjunction with passive ultrasonic agitation: An ex vivo study

2020 ◽  
Vol 14 (4) ◽  
pp. 235-238
Author(s):  
Yogesh Damade ◽  
Ramchandra Kabir ◽  
Sunanda Gaddalay ◽  
Sharvaree Deshpande ◽  
Sonali Gite ◽  
...  
Keyword(s):  
Sodium Hypochlorite ◽  
Root Canal ◽  
Ethylenediaminetetraacetic Acid ◽  
Ex Vivo ◽  
Canal System ◽  
Ultrasonic Agitation ◽  
Root Canal System ◽  
Post Hoc ◽  
Root Canal Instrumentation ◽  
Ex Vivo Study

Background. This study aimed to investigate the endodontic debridement efficacy of different sodium hypochlorite (NaOCl) irrigation regimens with and without ultrasonic agitation, followed by ethylenediaminetetraacetic acid (EDTA) via scanning electron microscopy (SEM) after using a rotary instrumentation system. Methods. Mandibular premolars (n=50) were randomly divided into five experimental groups (n=10) for root canal instrumentation with ProTaper Universal rotary system up to F3. The root canal system was treated with intracanal-heated NaOCl (100°C) or preheated NaOCl (55°C), followed by ultrasonic agitation and EDTA treatment. Samples irrigated with conventional needle irrigation (CNI) using normal saline solution were used as controls. Debridement efficacy was analyzed by SEM. A five-point scale was used to estimate the presence/absence of debris for each canal segment (coronal, middle, and apical). The results were analyzed using one-way ANOVA and post hoc Tukey tests (P<0.05). Results. The experimental groups exhibited less debris compared to CNI with saline (P<0.05). The amount of debris decreased significantly for the group with NaOCl intracanal heating compared to extraoral heating. Ultrasonic agitation further enhanced the root canal debridement efficacy of NaOCl. Conclusion. In summary, intracanal heating of NaOCl with and without ultrasonic agitation followed by EDTA appears to be a promising method to flush debris from the root canal system.

Effect of Optimum Torque Reverse Motion on Torque and Force Generation during Root Canal Instrumentation with Crown-down and Single-length Techniques

2020 ◽  
Vol 46 (2) ◽  
pp. 232-237 ◽  
Author(s):  
Shunsuke Kimura ◽  
Arata Ebihara ◽  
Keiichiro Maki ◽  
Miki Nishijo ◽  
Daisuke Tokita ◽  
...  
Keyword(s):  
Root Canal ◽  
Force Generation ◽  
Reverse Motion ◽  
Root Canal Instrumentation
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