scholarly journals Apical Extrusion of Debris Produced during Continuous Rotating and Reciprocating Motion

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Giselle Nevares ◽  
Felipe Xavier ◽  
Luciana Gominho ◽  
Flávia Cavalcanti ◽  
Marcely Cassimiro ◽  
...  
Keyword(s):  
Cross Section ◽  
Sodium Hypochlorite ◽  
Reciprocating Motion ◽  
Continuous Motion ◽  
Analytical Balance ◽  
Root Canals ◽  
Apical Extrusion ◽  
Final Weight ◽  
The Difference

This study aimed to analyse and compare apical extrusion of debris in canals instrumented with systems used in reciprocating and continuous motion. Sixty mandibular premolars were randomly divided into 3 groups (n=20): the Reciproc (REC), WaveOne (WO), and HyFlex CM (HYF) groups. One Eppendorf tube per tooth was weighed in advance on an analytical balance. The root canals were instrumented according to the manufacturer’s instructions, and standardised irrigation with 2.5% sodium hypochlorite was performed to a total volume of 9 mL. After instrumentation, the teeth were removed from the Eppendorf tubes and incubated at 37°C for 15 days to evaporate the liquid. The tubes were weighed again, and the difference between the initial and final weight was calculated to determine the weight of the debris. The data were statistically analysed using the Shapiro-Wilk, Wilcoxon, and Mann-Whitney tests (α=5%). All systems resulted in the apical extrusion of debris. Reciproc produced significantly more debris than WaveOne (p<0.05), and both systems produced a greater apical extrusion of debris than HyFlex CM (p<0.001). Cross section and motion influenced the results, despite tip standardization.

scholarly journals Effect of Passive Ultrasonic Irrigation on Apical Extrusion of Irrigating Solution

2008 ◽  
Vol 02 (03) ◽  
pp. 198-203 ◽  
Author(s):  
Tamer Tasdemir ◽  
Kursat Er ◽  
Davut Celik ◽  
Tahsin Yildirim
Keyword(s):  
Stainless Steel ◽  
Sodium Hypochlorite ◽  
Root Canal ◽  
Control Group ◽  
Passive Ultrasonic Irrigation ◽  
Root Canals ◽  
Apical Extrusion ◽  
Ultrasonic Irrigation ◽  
The Mean ◽  
Mandibular Incisors

ABSTRACTObjectives: To determine the influence of passive ultrasonic irrigation (PUI) on apical extrusion of irrigating solution.Methods: Twenty freshly extracted maxillary and mandibular incisors with single straight root canals were instrumented with ProTaper rotary files. During final irrigation, the root canals were filled with 2.5% sodium hypochlorite (NaOCl) solution and PUI was performed with a piezoelectronic unit. A stainless steel instrument (size 15) was inserted into the root canal and the irrigant was ultrasonically activated for one minute. This sequence was repeated three times, resultingin a total PUI time of three minutes. The volume of extruded irrigant was measured by Pipetman pipettes. The data were statistically analyzed with the Mann-Whitney U test.Results: The mean volume of apical extruded irrigant was 2.15 �L for the PUI group and 14 �L forthe control group. The experimentalgroup extruded significantly smaller amounts of irrigant than the control group (P<.05).Conclusions: The PUI procedure as a final irrigation was associated with less apical extrusion of the irrigating solution. (Eur J Dent 2008;2:198-203)

scholarly journals Apical Extrusion of Debris and Irrigant using Novel Preparation Systems

2014 ◽  
Vol 15 (4) ◽  
pp. 423-427 ◽  
Author(s):  
Emel Uzunoglu ◽  
Melahat Görduysus
Keyword(s):  
Clinical Significance ◽  
Sodium Hypochlorite ◽  
Gravitational Force ◽  
Bonferroni Correction ◽  
Root Canals ◽  
Apical Extrusion ◽  
Significant Difference ◽  
The Mean

ABSTRACT Aim The aim of this in vitro study was to assess the amount of apically extruded debris and irrigant using Reciproc vs self-adjusting file (SAF) and to investigate the effect, if any, of gravitational force via mandibular and maxillary positioning of the teeth. Materials and methods Forty human mandibular premolars were randomly assigned to four groups of 10 teeth each. The root canals were instrumented according to the manufacturers’ instructions using the Reciproc and SAF. Sodium hypochlorite was used as the irrigant. The apically extruded debris was collected in pre-weighted glass vials using the Myers and Montgomery method, and teeth were placed in vials both in downward and upward positions. After drying, the mean weight of debris was assessed with a microbalance and statistically analyzed using two-way ANOVA with Bonferroni correction. Results All instrumentation techniques and positions caused measurable apical extrusion of debris. A significant difference was observed according to position and instrument used (p < 0.05). The Reciproc extruded significantly more debris than SAF and vial downward position extruded significantly more debris than upward position (p < 0.05). Conclusion Under the conditions of this study, all systems caused apical debris extrusion, especially in the downward position. Clinical significance According to results of this study, the SAF was associated with less debris extrusion compared to the Reciproc in both mandibular and maxillary positions. How to cite this article Uzunoglu E, Görduysus M. Apical Extrusion of Debris and Irrigant using Novel Preparation Systems. J Contemp Dent Pract 2014;15(4):423-427.

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 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 Comparative evaluation of various endodontic irrigants on apical extrusion of debris

2013 ◽  
Vol 60 (3) ◽  
pp. 119-123
Author(s):  
Sameer Makkar ◽  
Simranjeet Kaur
Keyword(s):  
Sodium Hypochlorite ◽  
Test Results ◽  
Root Canal Preparation ◽  
Root Canals ◽  
Tukey Test ◽  
Group 4 ◽  
Apical Extrusion ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

Introduction. All techniques and instruments used to clean and shape canals produce some amount of apically extruded debris. The type of irrigant can affect the amount of apically extruded debris. The aim of the present study was to quantitatively compare the amount of debris extruded apically from root canals when three different irrigants were used during canal preparation with hand instruments. Material and Methods. Twenty extracted single-rooted human mandibular premolars with straight root canals were used. The teeth were randomly divided into 4 groups based on the irrigant used: Group 1: Biopure MTAD (Dentsply), Group 2: 3% NaOCl (Prima Dentalproducts), Group 3: 2% Chlorhexidine (Vishal Industries, Gujarat), Group 4: Control (no irrigation). Debris extruded through apical foramen during root canal preparation was collected into pre weighed empty guttapercha tubes. The weight of dry extruded debris was calculated by subtracting the preinstrumentation and postinstrumentation weight for each group. Obtained data was analyzed using one-way analysis of variance and Tukey test. Results. Group 2 (3% sodium hypochlorite) had the greatest amount of extruded debris which was significantly different from other groups (p<0.05). Conclusion. The type of used irrigant can affect the amount of apically extruded debris. Sodium hypochlorite in the concentration of 3% showed the greatest amount of extruded debris.

Effect of a novel laser-initiated photoacoustic activation of a solvent or sodium hypochlorite in the removal of filling remnants after retreatment of curved root canals

2021 ◽  
pp. 102535
Author(s):  
Ivona Bago ◽  
Gianluca Plotino ◽  
Marko Katić ◽  
Adriana Ferenac ◽  
Gabrijela Kapetanović Petričević ◽  
...  
Keyword(s):  
Sodium Hypochlorite ◽  
Root Canals ◽  
Curved Root Canals

Theoretical study on photoemission of double-layer AlxGa1−xAs/GaAs nanocone array photocathode

2021 ◽  
Author(s):  
Yan Sun ◽  
Lei Liu ◽  
Zhisheng Lv ◽  
Xingyue Zhangyang ◽  
Feifei Lu ◽  
...  
Keyword(s):  
Cross Section ◽  
Light Trapping ◽  
Spectral Response ◽  
Circular Cross Section ◽  
Geometrical Parameters ◽  
Internal Electric Field ◽  
Surface Emission ◽  
The Difference ◽  
Section Structure ◽  
Light Capture

In the design of photocathode, the internal electric field could be formed due to the graded Al compositional [Formula: see text] nanostructure, which can improve the top surface emission probability of carriers. In this paper, [Formula: see text] nanostructure array photocathode composed of two sub-layers is presented. Based on the finite element method, the influence of graded geometrical parameters on their optoelectronic characteristics is investigated. The results show that when the thickness of the sublayer is equal, the difference of the Al composition between the two sublayers of nanostructure is larger, the sub-layers are less, and the quantum efficiency is higher. The light capture ability of the photocathode can be enhanced by increasing the thickness and the array spacing of the first sublayer. Compared with the hexagonal cross-section structure, the light trapping effect and spectral response of the circular cross-section structure are better.

scholarly journals ANTIUROLITHIC ACTIVITY OF BERBERIS TRIFOLIATA EXTRACT ON INDUCED UROLITHIASIS IN RATS BY ZINC DISC IMPLANTATION

2017 ◽  
Vol 15 (1) ◽  
pp. 168
Author(s):  
Raymundo Alejandro Pérez-Hernández ◽  
Silvia Guadalupe Treviño-Moreno ◽  
Gilberto Arévalo- Martínez ◽  
Eduardo Sánchez -García ◽  
Catalina Leos-Rivas ◽  
...  
Keyword(s):  
Kidney Stone ◽  
Methanolic Extract ◽  
Stone Formation ◽  
Final Weight ◽  
The Difference ◽  
Postsurgical Recovery ◽  
Kidney Stone Formation ◽  
Treatment Of Urolithiasis ◽  
Different Doses

Background: In clinical therapy, there is no satisfactory drug available for treatment of urolithiasis, especially for the prevention of their recurrence. The aim of this work was to evaluate in vivo antiurolithic activity of methanolic extract of Berberis trifoliata leaves. Material and methods: Urolithiasis was induced in Wistar rats by zinc disc implantation in urinary bladder. Upon postsurgical recovery, different doses of the methanolic extract of B. trifoliata leaves (50, 100 and 150 mg/kg body weight) were administered orally to zinc disc implanted rats for a period of 20 days. Antiurolithiatic activity was evaluated by measuring the difference between the weight of the implanted zinc discs at the time of implantation and the final weight of the dried calculi taken out from the bladder at the end of the 20 days period of treatment. Results: Extract of B. trifoliata significantly reduced calculi deposition around the implanted zinc disc at all doses (50, 100, and 150 mg/kg). Conclusion: Treatment with methanolic extract of B. trifoliata is useful agent against the kidney stone formation.

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