scholarly journals An Evaluation of GuttaFlow2 in Filling Artificial Internal Resorption Cavities: An in vitro Study

2016 ◽  
Vol 17 (6) ◽  
pp. 445-450 ◽  
Author(s):  
Mohammad Y Hajeer ◽  
Yara Mohammad ◽  
Hisham Alafif ◽  
Oula Yassin
Keyword(s):  
Cross Sections ◽  
Root Canal ◽  
In Vitro Study ◽  
Free Flow ◽  
Control Group ◽  
Injection Technique ◽  
Filling Material ◽  
The Third ◽  
Gutta Percha

ABSTRACT Introduction Obturation of root canal with internal resorption represents a major challenge in Endodontics. In spite of that, usual obturation techniques are often employed without considering the best technique to solve this problem. The goal of this study was to investigate the ability of GuttaFlow2 in filling artificial internal resorption cavities. Materials and methods The study sample included 36 human upper central incisors that were prepared using Protaper system (F4). Internal resorption cavities were prepared by cutting each tooth at 7 mm from the apex and preparing hemispherical cavities on both the sides and then re-attaching them. The sample was randomly separated into three groups (n = 12 in each group). In the first group, thermal injection technique (Obtura II) was employed and served as the control group. In the second group, injection of cold free-flow obturation technique with a master cone (GF2-C) was employed, whereas in the third group injection of cold free-flow obturation without a master cone (GF2) was followed. The teeth were re-cut at the same level as before and examined under a stereomicroscope. Subsequently, the captured images were transferred to AutoCAD program to measure the percentage of total filling “TF,” gutta-percha “G,” sealer “S,” and voids “V” out of the total surface of the cross sections. Results All materials showed high filling properties in terms of “total filling,” ranging from 99.17% (for Obtura II) to 99.72% (for GF2-C). Regarding gutta-percha percentages of filling, they ranged from 83.15 to 83.93%, whereas those for the sealer ranged from 5.71 to 15.24%. GuttaFlow2 group with a master cone appeared to give the best results despite the insignificant differences among the three groups. Conclusion The GuttaFlow2 with a master cone technique seemed to be a promising filling material and gave results similar to those observed with Obtura II. It is recommended for use to obturate internal resorption cavities in clinical practice due to its good adaptability to root canal walls, ease of handling, and application. Clinical significance Internal resorption defects can be successfully filled with GuttaFlow2 material when supplemented with a master cone, and the results are comparable with those obtained with the Obtura II technique. How to cite this article Mohammad Y, Alafif H, Hajeer MY, Yassin O. An Evaluation of GuttaFlow2 in Filling Artificial Internal Resorption Cavities: An in vitro Study. J Contemp Dent Pract 2016;17(6):445-450.

scholarly journals Evaluation of the apical microleakage of MTA Fillapex, AH26, and Endofill sealers

2020 ◽  
Vol 23 (3) ◽  
Author(s):  
Saeedeh Galledar ◽  
Robab Farhang ◽  
Malek Abazari ◽  
Parisa Negahdar
Keyword(s):  
Root Canal ◽  
Test Group ◽  
In Vitro Study ◽  
Negative Control ◽  
Vitro Study ◽  
Control Group ◽  
Dye Penetration ◽  
Gutta Percha ◽  
Significant Difference

Objective: Proper apical seal plays an important role in the success of root canal treatment. The most common cause of failure of root canal therapy is known as the lack of adequate apical seal. The aim of this in vitro study was to compare the apical microleakage of MTA Fillapex, , and Endofill sealers using dye penetration method. Material and Methods: In this in vitro study, 72 single-rooted extracted human teeth were selected. The teeth were randomly divided into three experimental groups of 20 and two positive and negative control groups of 6. The canals were prepared by step-back technique and then filled with gutta-percha and one of the sealers mentioned. In the positive control group, the canals were filled with gutta-percha without sealer, and in the negative control group, the canals were prepared but not filled. The teeth were immersed in 2% methylene blue dye for 72 hours. The teeth were then cut longitudinally and the level of dye penetration was measured under a stereomicroscope. Data were analyzed by SPSS ver. 19 software, ANOVA and Bonferroni post-hoc tests. Results: The mean level of dye penetration in the Endofill test group was significantly higher than that in the  and MTA Fillapex test groups. While, the observed difference between  and MTA Fillapex groups was not statistically significant (p<0.05). Conclusion: The results of this study showed that  and MTA Fillapex sealers did not show any significant difference in apical seal properties. However, their sealing strength was significantly greater than Endofill sealer.KeywordsAH26 sealer; Endofill; MTA Fillapex; Microleakag

scholarly journals Comparative evaluation of sealing ability of different obturation materials

2010 ◽  
Vol 138 (5-6) ◽  
pp. 287-291 ◽  
Author(s):  
Irena Melih ◽  
Ankica Jakovljevic ◽  
Milica Popovic ◽  
Dragana Pesic
Keyword(s):  
Root Canal ◽  
In Vitro Study ◽  
Control Group ◽  
Root Canal Filling ◽  
Single Root ◽  
Dye Penetration ◽  
Filling Materials ◽  
Gutta Percha ◽  
Ah Plus

Introduction Root canal filling materials are intended to prevent microleakage and passing of microorganisms and their toxins along the root canal space and into the periradicular tissues. Objective Objective of this in vitro study was to evaluate and compare apical leakage of root canals obturated using a modified warm vertical condensation technique and different materials. Methods Sixty-five extracted single-root teeth were prepared according to the crown-down/ step-back technique. Each canal was rinsed with 3% NaOCl during and after the preparation. The teeth were divided into 3 groups. Every group was obturated by the same technique, but with different materials: RealSeal system (SybronEndo), gutta-percha with AH Plus (Dentsply Maillefer) and gutta-percha with Acroseal sealer (Septodont). The remaining 20 teeth were in the control group. The teeth were immersed in 1% methylene blue for 72 hours. After that period, the roots were split longitudinally, and dye penetration was measured using a stereomicroscope. Results Dye penetration occurred in all groups. The least dye penetration occurred in the RealSeal group (0.33?}0.29 mm), while the highest dye penetration occurred in the Acroseal group (1.11?}0.52 mm). According to the Student's t-test, Acroseal showed significantly more leakage (p<0.001) than RealSeal and AH Plus materials. The microleakage of RealSeal system was not significantly different (p>0.05) from that of AH Plus sealer with gutta-percha. Conclusion The results suggested that new material Resilon (RealSeal) and conventional combination AH Plus with gutta-percha had the least apical dye penetration and provided the best sealing.

scholarly journals Comparative assessment of manual, rotary and reciprocating instruments for removal of root fillings, using stereomicroscope: An in vitro study

2019 ◽  
Vol 45 (1) ◽  
pp. 54-61
Author(s):  
Afzal Ali ◽  
Sazid Hussain ◽  
Sandeep Metgud ◽  
Shashank Mishra ◽  
Ankita Sharma ◽  
...  
Keyword(s):  
Root Canal ◽  
File Systems ◽  
In Vitro Study ◽  
Filling Material ◽  
Root Canal Filling ◽  
Root Canals ◽  
Tukey Test ◽  
Gutta Percha ◽  
Reciprocating Instruments

Background: To investigate the efficiency of Hedstrom (H; Dentsply Maillefer) file, Protaper Universal Retreatment system (PTUR; Dentsply Maillefer), Mani NRT-GPR files (Mani, Japan) and WaveOne (WO; Dentsply Maillefer) Reciprocating files in removing Gutta Percha (GP) and sealer from root canals. Methods: Sixty canals with less than 10° curvature from extracted human maxillary incisors were used. Root canal reinstrumentation was performed with H, PTUR, Mani NRT-GPR and WO files. Amount of residual root filling material (Gutta-percha and or sealer) were measured by using stereomicroscope. Data of GP or sealer remnants were statistically analyzed using one-way analysis of variance and Tukey test. Results: There were no significant differences among 4 groups in terms of residual root filling material in the apical third (p > 0.05). H-file group showed highest amount of root residual root filling as compared to groups. Conclusions: Reciprocating file system proved to be more efficient in removing the root canal fillings material than other retreatment file systems. H file group showed highest amount of root canal filling material. Bangladesh Med Res Counc Bull 2019; 45: 54-61

scholarly journals To Evaluate the Effect of Presence and Absence of Smear Layer with Different Instruments and Obturation Methods on Microleakage of Root Canal-Filled Teeth: An in vitro Study

2013 ◽  
Vol 4 (2) ◽  
pp. 103-107
Author(s):  
Dinesh Shetty ◽  
Veerendra Uppin ◽  
Priyadarshini Shetty
Keyword(s):  
Root Canal ◽  
In Vitro Study ◽  
Smear Layer ◽  
Vitro Study ◽  
Electrochemical Technique ◽  
Control Group ◽  
Root Canals ◽  
Gutta Percha ◽  
Presence And Absence

ABSTRACT Aim To evaluate the effects of presence and absence of smear layer with different instruments and obturation methods on microleakage of root canal-filled teeth. Materials and methods A total of 100 extracted human maxillary central incisors with closed apices and single roots were taken for the study. The teeth were divided into six groups A to F consisting of 15 teeth each. Control group consisted of 10 teeth with five positive and five negative teeth each. Groups A, B, C and D were instrumented with rotary files and groups E and F were instumented with conventional stainless steel files. Groups A, B, C and D were flushed with 3 ml of EDTA to remove the smear layer prior to obturation. All teeth were flushed with 5% NaOCl, then obturated with AH-26 sealer with lateral condensation technique on groups C, D, E, F and injectable thermoplasticized gutta-percha obturation technique on groups A and B. Using electrochemical technique the current flow in the circuit was observed for 45 days. The magnitude of the current for each tooth was directly proportional to the extent of leakage. At the intervals of 10, 20, 30 and 45 days the groups A-F were compared to identify statistically significant differences using students t-test. Results Significantly less microleakage occurred when the smear layer was removed and when the canals were obturated with thermoplasticized gutta-percha. Canals instrumented with engine driven NiTi files exhibited less leakage than hand instrumented canals. Conclusion Rotary instrumentation of the root canals provides a superior preparation in comparison to hand instrumentation. Removal of smear layer increases the resistance of microleakage. Thermoplasticized gutta-percha obturation appears to provide a superior seal as compared to lateral condensation. How to cite this article Shetty P, Uppin V, Shetty D. To Evaluate the Effect of Presence and Absence of Smear Layer with Different Instruments and Obturation Methods on Microleakage of Root Canal-Filled Teeth: An in vitro Study. World J Dent 2013;4(2):103-107.

Microbial Leakage of Cavit, IRM, and Temp Bond in Post-prepared Root Canals Using Two Methods of Gutta-percha Removal: An In Vitro Study

2005 ◽  
Vol 6 (3) ◽  
pp. 53-61 ◽  
Author(s):  
Hanan Balto ◽  
Saad Al-Nazhan ◽  
Khulood Al-Mansour ◽  
Moneera Al-Otaibi ◽  
Yunus Siddiqu
Keyword(s):  
Root Canal ◽  
Bacterial Suspension ◽  
Control Group ◽  
Endodontically Treated Teeth ◽  
Root Canals ◽  
Gutta Percha ◽  
Working Length ◽  
Significant Difference ◽  
Post Space

Abstract The aim of this study was to evaluate the integrity of the coronal seal of Temp-Bond and compare it to Cavit and IRM after post space preparation using S. faecalis as a microbial tracer. In addition, the affect of two methods of gutta percha removal on the apical seal of root canal fillings was also evaluated. Forty extracted human single rooted teeth were prepared chemomechanically and obturated with gutta percha and AH26 sealer cement using the lateral cold condensation technique to a standardized working length of 15 mm. About 10 mm of the coronal gutta-percha was removed with either Peeso-reamer or a hot plugger. The roots were divided into three experimental groups of 10 roots and a control group. Each experimental group was subdivided equally into two groups of 15 each according to the method of post space preparation. Cavit, IRM, and Temp-Bond were used to seal the access opening. Each root was fixed in a cuvette containing Tryptic Soya Broth which, covered 2 mm of the root apex. Bacterial suspension was introduced through pipette. Fresh bacterial suspension was added every week, and the system was monitored daily for the growth of microorganisms for a period of one month. The results showed there was no significant difference in terms of coronal leakage between the three coronal materials used (P=0.478), but the methods of gutta-percha removal did have an impact on the apical leakage (P=0.047). The mean value showed the Peeso-reamer provided less leakage compared to using a hot plugger during the 30-day experimental time period. It was concluded the temporary type of coronal seal of endodontically treated teeth will not prevent coronal leakage if left for a long period of time. In addition, permanent cementation of the post with the coronal restoration should be carried out as soon as possible to prevent recontamination of the root canal. Citation Balto H, Al-Nazhan S, Al-Mansour K, Al-Otaibi M, Siddiqu Y. Microbial Leakage of Cavit, IRM, and Temp Bond in Post-prepared Root Canals Using Two Methods of Gutta-percha Removal: An In Vitro Study. J Contemp Dent Pract 2005 August;(6)3:053-061.

scholarly journals Orange-Brown Precipitate: A Threat to the Success of Endodontic Treatment – An In Vitro Study

2020 ◽  
Vol 8 (D) ◽  
pp. 53-57
Author(s):  
Shashidhar Chandrashekhar ◽  
Dinesh Rao ◽  
Jyothi Shashidhar ◽  
Smitha Naik
Keyword(s):  
Root Canal ◽  
Isopropyl Alcohol ◽  
Sodium Thiosulfate ◽  
In Vitro Study ◽  
Control Group ◽  
Group 4 ◽  
Root Canal Irrigants ◽  
Group 5 ◽  
Brown Precipitate

AIM: The aim of the present study was to evaluate the effect of various intermediate irrigating solutions in the removal of orange-brown precipitate formed due to alternative use of sodium hypochlorite (NaOCl) and chlorhexidine (CHX) root canal irrigants. METHODS: The root canals of 50 mandibular premolars were prepared using ProTaper Universal Rotary instruments (Dentsply Maillefer, Ballaigues, Switzerland) up to size F3. The roots were randomly divided into five experimental groups specified by the intermediate irrigant used; Group 1: No intermediate irrigant used (control), Group 2: Saline, Group 3: 7% maleic acid (MA), Group 4: 4% sodium thiosulfate, and Group 5: 70% isopropyl alcohol (n = 10). After final irrigation with CHX, the specimens were evaluated for the presence/absence of orange-brown precipitate under stereomicroscope. RESULTS: Mean precipitate for all experimental groups was calculated using ANOVA F test which showed orange-brown precipitate (parachloroanaline) in all groups except Group 4 and Group 5 which were highly significant (p < 0.001) at all the levels of root canal. Intergroup pairwise comparison was done using Tukey’s post hoc test. CONCLUSION: About 7% MA is effective in minimizing the formation of orange-brown precipitate when used as intermediate irrigant between NaOCl and CHX. However, the precipitate was not observed with 4% sodium thiosulfate and 70% isopropyl alcohol.

scholarly journals In vitro evaluation of gutta-percha dissolution ability of different solvents

RSBO ◽  
2017 ◽  
Vol 14 (3) ◽  
pp. 152-05
Author(s):  
Kelly Cristina Santana de Oliveira ◽  
Flávia Sens Fagundes Tomazinho ◽  
Monique Marchiori ◽  
Marilisa Carneiro Leão Gabardo ◽  
Sérgio Herrero Moraes ◽  
...  
Keyword(s):  
Statistical Test ◽  
Control Group ◽  
Filling Material ◽  
Time Intervals ◽  
Orange Oil ◽  
Loss Analysis ◽  
Gutta Percha ◽  
Significant Difference ◽  
Endodontic Retreatment

The removal of the filling material during the Endodontic retreatment is essential, so a better action of solvents on the gutta-percha is desired. Objective: To evaluate in vitro the gutta-percha dissolution ability of different solvents. Material and methods: Four solvents (xylol, eucalyptol, citrol, and orange oil) were applied on gutta-percha points, which had been later submitted to the weight loss analysis at 2, 5, and 10 minutes. For each solvent, 30 size #60 main cones were used, divided into three groups. Distilled water was used as control group. The statistical test applied was Kruskal-Wallis. Results: No statistically significant difference occurred among the solvents at 2 minutes (p > 0.05); however, during this period, citrol had the best performance. In longer time intervals, the xylol showed differences compared to eucalyptol at 5 minutes and to eucalyptol and citrol at 10 minutes (p < 0.05). The worst results were found for eucalyptol. Conclusion: This xylol was the solvent with improved ability to dissolve the gutta-percha points, with better results at longer time periods.

scholarly journals Influence of Exposing Root Canal Dentin to Calcium Hydroxide on Its Flexural Strength

2015 ◽  
Vol 1 (3) ◽  
pp. 143
Author(s):  
Diatri Nari Ratih
Keyword(s):  
Flexural Strength ◽  
Calcium Hydroxide ◽  
Root Canal ◽  
Artificial Saliva ◽  
Testing Machine ◽  
In Vitro Study ◽  
Control Group ◽  
Sterile Saline ◽  
Root Canal Dentin

Calcium hydroxide has been used extensively in endodontic treatments, for instance as an intra-canal dressing; however, the exposure of root canal dentin to calcium hydroxide may affect its flexural strength and could have important clinical implications for endodontic treatment. The purpose of this in vitro study was to investigate the influence of calcium hydroxide on the flexural strength of root canal dentin.Seventy-two extracted single-rooted human mandibular premolars were used in this study. Each tooth was instrumented using crown-down technique and was irrigated using sterile saline. The teeth were assigned into three groups of 24 each. The prepared root canal system of each tooth was filled with calcium hydroxide mixed with sterile saline (group 1), a calcium hydroxide commercially available product (UltraCal®) (group 2) or saline solution (group 3, as control). The apices and access opening were sealed using composite resin, and the teeth were immersed in artificial saliva. After 7, 14 and 30 days of immersion, the inner root canal dentin of 8 teeth respectively from each group were sectioned to create dentin bars (1 X 1 mm, with 7 mm in length). Each dentin bar then was subjected to a three-point bending flexural test using MTS (Universal Testing Machine). Data gathered were then analyzed using two-way ANOVA, followed by Tukey’s test with the level of significance of 95%. The results showed that exposure to calcium hydroxide either using calcium hydroxide mixed with sterile saline or UltraCal® for 14 and 30 days can reduce flexural strength of root canal dentin compared to control group (p<0.05). In contrast, after 7 days exposure, there was no significantly different of flexural strength between three groups (p>0.05).   It can be concluded that calcium hydroxide reduced the flexural strength of root canal dentin. The longer the exposure to calcium hydroxide would produce a greater effect on flexural strength of root canal dentin.   

scholarly journals Dissolution capacity of orange and eucalyptus oils versus endodontic types of cement (in vitro study)

2022 ◽  
Vol 10 (19) ◽  
pp. 29-33
Author(s):  
Sebastián M. Ulloa-Alvarez ◽  
María E. Guerrero-Coello ◽  
José E. Torracchi-Carrasco
Keyword(s):  
In Vitro Study ◽  
Control Group ◽  
Filling Material ◽  
Cement Sample ◽  
Orange Oil ◽  
Eucalyptus Oil ◽  
Before And After ◽  
The Difference ◽  
Post Hoc

Introduction: Endodontic retreatment seeks reentry to the root canal system to remove all filling material, identification and correction of pathological or iatrogenic defects. Objective: This study aimed to compare the dissolving capacity of eucalyptus oil, orange oil, and distilled water versus three types of endodontic cements. Materials and methods: Two hundred and four stainless steel molds were fabricated, where each cement sample was placed to the edge and left to set in the incubator, simulating normal oral conditions for 7 days. Subsequently, the solubility of each cement was analysed by immersing the samples in eucalyptus and orange oil for ten minutes in a static and ultrasonic environment. The solubility of the cement was evidenced by the difference between the weight before and after contact with the oils, data were statistically analysed with the ANOVA test and the post hoc Tukey bootstrap means test with 1,000 repetitions. Results: The control group and eucalyptus oil having no significant effect (p>0.05), the ultrasonic environment was found to be effective (p<0.05), whereas orange oil had better dissolution effects (p=0.004). Conclusions: The most susceptible cement was Sealapex, while the least soluble was MTA-Fillapex in all the solvents studied.

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