scholarly journals Comparison of Orange Oil and Chloroform as Gutta- Percha Solvents in Endodontic Retreatment

2013 ◽  
Vol 14 (3) ◽  
pp. 478-482 ◽  
Author(s):  
Farhan Raza Khan ◽  
Kiran Rehman ◽  
Nadia Aman
Keyword(s):  
Sampling Technique ◽  
University Hospital ◽  
Chi Square ◽  
Orange Oil ◽  
Gutta Percha ◽  
Significant Difference ◽  
Tooth Type ◽  
Level Of Significance ◽  
Endodontic Retreatment

ABSTRACT Objective To compare the efficacy of gutta-percha removal achieved with simple mechanical technique using two different solvents. Materials and methods It was an in vitro experimental study conducted at the Aga Khan University Hospital, Karachi, Pakistan on 27 extracted human molars divided into two groups by alternate sampling technique. The teeth were prepared by manual filing and obturated with gutta-percha and calcium hydroxide sealer. Two drops of the assigned solvent were placed on the orifice of the obturated canal and Gates Glidden drills #1, 2 and 3 were used for removal of coronal gutta-percha. Manual filing was done for removal of remaining gutta-percha and the solvent was used in drops until needed. Postoperative periapical radiographs were taken to visualize the remaining gutta-percha left in the canals. Descriptive statistics (mean and SD) of the variables such as tooth type, obturation length and canal curvatures were determined. Chi-square and independent sample t-tests were applied and level of significance was set at 0.05. Results There was 5.19 (3.8) mm of remaining gutta-percha in the orange oil group and 5.37 (4.2) mm in the chloroform group (p = 0.90). Conclusion There is no statistically significant difference between the orange oil and chloroform when used as solvent for removing gutta-percha. How to cite this article Rehman K, Khan FR, Aman N. Comparison of Orange Oil and Chloroform as Gutta-Percha Solvents in Endodontic Retreatment. J Contemp Dent Pract 2013;14(3):478-482.

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

RSBO ◽  
2018 ◽  
Vol 1 (3) ◽  
pp. 152
Author(s):  
Kelly 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

Introduction: 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 thesolvent with improved ability to dissolve the gutta-percha points, with better results at longer time periods.

scholarly journals Collaborative Learning Practices by Gender: A Case of a Community School in Nepal

2020 ◽  
Vol 13 (4) ◽  
pp. 75
Author(s):  
Kamal Prasad Acharya ◽  
Milan Acharya ◽  
Madhav Kumar Shrestha
Keyword(s):  
Collaborative Learning ◽  
Sampling Technique ◽  
Learning Activities ◽  
Community School ◽  
Open Communication ◽  
Chi Square ◽  
Significant Difference ◽  
Chi Square Test ◽  
Level Of Significance ◽  
Basic Level

This study explores the situation of basic level community school boy and girl students’ science and health learning through collaborative culture. Fifth, sixth and seventh-grade students (both boys and girls) took part in this study. As per the aim of this study, a set of questionnaire was developed and administered to the sampled students. Two hundred and fifty-eight students were selected from the sampled school using the census sampling technique. All the students were involved in collaborative learning activities such as building trust and open communication, establishing group interaction, respect diversity and sharing creative ideas based on the basic level science and health curriculum aiming at promoting inquiry learning through collaboration. A quantitative analysis involving the use of the Chi-square test at 0.05 level of significance, Likelihood ratio and Somer’s symmetric was conducted to see the association between the variables. The results showed that science and health collaborative learning activities by gender were not associated significantly. There was no statistically significant difference (α=0.05) between the variables studied. The findings showed a weak association with gender and collaborative science and health learning activities in the classrooms.

scholarly journals Evaluation of apically extruded debris during removal of gutta-percha and ResilonTM using different instrumentation techniques

2018 ◽  
Vol 75 (1) ◽  
pp. 56-61
Author(s):  
Dragana Pesic ◽  
Irena Melih ◽  
Veljko Kolak ◽  
Ana Nikitovic ◽  
Ankica Jakovljevic
Keyword(s):  
Treatment Success ◽  
In Vitro Study ◽  
Filling Material ◽  
Gutta Percha ◽  
Rotary Instruments ◽  
Apical Extrusion ◽  
Significant Difference ◽  
Ah Plus ◽  
Endodontic Retreatment

Background/Aim. Apical extrusion of material is considered as one of the very important factor for endodontic treatment success. Microorganisms, necrotic tissue, filling material and irrigants, which can be extruded apically during endodontic retreatment, may jeopardize the success of the therapy. The aim of this in vitro study was to quantitatively evaluate the amount of apically extruded debris during endodontic retreatment of teeth obturated with two different materials, using one hand and three rotary instrumentation techniques. Methods. Ninety-six extracted single-rooted teeth were endodontically treated and enlarged to size 40 using BioRaCe system, and then randomly divided into 8 groups of 12 specimens each. Half of the specimens were obturated with gutta-percha and AH Plus? sealer and another half with RealSeal SE system, using lateral condensation technique. Retreatment was performed using: Hedstr?m files; ProFile rotary files; ProTaper Retreatment system and D-RaCe system. Apically extruded debris was collected in pre-weighed Eppendorf tubes and evaluated using an electronic microbalance. Data were analyzed statistically using t-test and analysis of variance. Results. In the AH Plus/gutta-percha group, all tested rotary instruments gave significantly less extruded debris compared with Hedstr?m files (p < 0.05). In theRealSeal group, there was significant difference between DRaCe and Hedstr?m instruments (p < 0.05). Conclusion. All retreatment techniques resulted in apical extrusion. DRaCe system produced significantly less extruded debris compared to hand files. No significant difference was found when comparing two instruments specially designed for retreatment: D-RaCe and ProTaper systems.

scholarly journals Psychotherapy can be effective in prolonging periods free of depression in early senescent

2016 ◽  
Vol 15 (1) ◽  
pp. 118-122
Author(s):  
Vidya Bhagat
Keyword(s):  
Medical Science ◽  
Age Groups ◽  
Sampling Technique ◽  
Age Group ◽  
Chi Square ◽  
Significant Difference ◽  
Before And After ◽  
The Difference ◽  
To Come ◽  
Level Of Significance

Background: The Psychotherapy can be effective in prolonging periods free of depression in early senescent has been focused on the study. People refused medication agreed to come for psychotherapy are treated to get free from their depressive symptom. The main objective of the study was therefore using psychotherapy as a treatment module to stretch time free of depression. Further psycho education to give more information on depression and increase patient flexibility for the combination of anti-depressant with psychotherapy when needed.Methodology: The subjects selected for the study were 60 patients from ‘Nitte Rural Psychiatry Clinic’ Nitte Mangalore Karnataka, India. They were selected by random sampling technique. Medico-Psychological questionnaire for general neuroticism was administered to find out the extent of depression before and after psychotherapy. To find the difference between the age and depression before and after psychotherapy Carl Pearson’s Correlation coefficient method was carried out.Results: The results reveal that a non-significant difference between age groups with extent of depression in different age group of early senescent before and after psychotherapy (Chi-square=1.7913, p>0.05) at the 5 % level of significance and (Chi-square=2.4485, p>0.05) at the 5 % level of significance respectively. Further the Comparison of extent of depression before and after psychotherapy in 50-55, 56-60 age groups and as a total by Wilcoxon matched pairs test has been administered and the result reveals that significant differences between extent of depression before and after psychotherapy in 50-55yrs of age group (Z=2.5205, p<0.05) at the 5 % level of significance, 56-60yrs of age group (Z=2.2014, p<0.05) at the 5 % level of significance. It means that, the significant means that, the significance of 15.7%, 10.5%depression was decreased before and after psychotherapy respectively. A significant difference was observed between extent of depression before and after psychotherapy in 50-60yrs of age group (Z=3. 2958, p<0.05) at the 5 % level of significance. It means that, the significance of 13.0% depression was decreased after psychotherapy.Conclusion: The implication of this study was to develop insight and understanding among the clinicians that importance psychotherapy as treatment of depression.Bangladesh Journal of Medical Science Vol.15(1) 2016 p.118-122

scholarly journals In vitro study of effect of solvent on root canal retreatment

2002 ◽  
Vol 13 (3) ◽  
pp. 208-211 ◽  
Author(s):  
Kazumi Onaga Nagayama Oyama ◽  
Evandro Luiz Siqueira ◽  
Marcelo dos Santos
Keyword(s):  
In Vitro Study ◽  
The Other ◽  
Orange Oil ◽  
Root Canals ◽  
Effect Of Solvent ◽  
Gutta Percha ◽  
Root Canal Retreatment ◽  
Significant Difference ◽  
Made In

The aim of this study was to assess the effectiveness of five different solvents: xylol, eucalyptol, halothane, chloroform and orange oil on softening gutta-percha in simulated root canals. One drop of solvent was placed into a reservoir made in a simulated canal whose channel was previously instrumented and filled with gutta-percha and N-Rickert sealer. After 5 min, softening was evaluated for each solvent by the penetration of a spreader while applying force with a 442 Instron apparatus to reach a depth of 5 mm. The results were analyzed statistically by the Kruskal-Wallis test. Xylol and orange oil were better in softening gutta-percha than the other solvents. There was no significant difference between xylol and orange oil, but these were statistically different from eucalyptol, halothane and chloroform (p<0.01).

scholarly journals Assessment of Apical Extrusion of Debris during Endodontic Retreatment with 3 Rotary Nickel-Titanium Retreatment Systems and Hand Files

2016 ◽  
Vol 20 (1) ◽  
pp. 22-28
Author(s):  
S. Gkampesi ◽  
Z. Mylona ◽  
T. Zarra ◽  
T. Lambrianidis
Keyword(s):  
Root Canal ◽  
Complete Removal ◽  
Filling Material ◽  
Root Canal Filling ◽  
Gutta Percha ◽  
Apical Extrusion ◽  
Significant Difference ◽  
Level Of Significance ◽  
Hand Instrumentation ◽  
Endodontic Retreatment

SummaryAim: to evaluate the amount of debris extruded apically as well as the time needed for removal of root canal filling material using ProTaper, MTwo, REndo NiTi rotary retreatment systems and hand files.Materials and methods: 60 freshly extracted human single-rooted teeth were instrumented with Protaper files and obturated with gutta-percha and MTA Fillapex sealer with the cold lateral compaction technique. Teeth were then randomly assigned to 4 groups. ProTaper, MTwo, REndo rotary retreatment systems and Hedstroem hand files were utilized for root canal filling removal. Debris extruded apically was collected into pre-weighed vials. The weight of the dry extruded debris was established by subtracting the pre-retreatment and post-retreatment weight of vials. Time needed for reaching WL, complete removal of gutta-percha and total retreatment time were also recorded with a stopwatch. The data obtained were analyzed using One-way ANOVA (the level of significance was set at P=0.05).Results: Hand instrumentation caused significantly more debris extrusion compared with rotary systems (P<0.001). There was no significant difference among the other groups (P>0.05). Hedstroem hand files needed significantly more time for the completion of the retreatment procedure than rotary systems (P<0.001). Among rotary retreatment files, ProTaper completed the procedure significantly quicker than MTwo and REndo (P<0.001).Conclusion: Rotary retreatment files caused less apical extrusion of debris and needed less time for the completion of the retreatment procedure compared to hand files.

A Study to Evaluate the Effectiveness of Webinar on Knowledge Regarding the Strategies to Prevent Covid 19 among Nursing Students of SIIHS, Honavar, Uttara Kannada

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Sagaya Arockiya Mary. A ◽  
Susai Mari.A ◽  
Wincy. C ◽  
Thirumurugan. M ◽  
Verginia Dsouza ◽  
...  
Keyword(s):  
Nursing Students ◽  
Student Nurses ◽  
Sampling Technique ◽  
Knowledge Score ◽  
P Value ◽  
Sufficient Information ◽  
Knowledge Level ◽  
Chi Square ◽  
Significant Difference ◽  
Post Test

Background: The one virus stumbled the whole universe is the novel corona virus and impacted physical, emotional and social health status of almost every individual in the world irrespectively. Since the existence of Covid-19 till now it is been noticed that student nurses also affected by this fatal viral infection during their clinical practice. Objectives: The study focused on evaluating the effectiveness of webinar on knowledge regarding the strategies to prevent Covid -19 among student nurses of SIIHS, Honavar, Uttara Kannada. The study aimed at enhancing the knowledge level and influences others through effective health teaching at clinical areas and even in community settings. Methodology: An evaluative approach with pre- experimental, non-randomized, one group pre and post-test research design was adapted. The sample size was 294, purposive sampling technique was adapted. Data collected through testmoz web page and webinar was conducted by google meet app for one week. Data analysed by descriptive and statistical methods (chi-square and z-test) and interpreted by graphs. Results: The findings show that in pre-test 10(3.41%) had poor, 127(43.19%) had average, 157(53.40%) Good and 00% excellent knowledge level whereas in post-test 00% had Poor, 59(20.06%) Average, 176(59.86%) Good and 59 (20.06%) had excellent knowledge level. The pre-test mean score was 23.1 (46.2 %.) and of post-test was 35.6 (71.2%). The computed z’-test value showing significant difference in the pre (x?1=23.1) and post-test (x?2=35.6) knowledge score (p=1.18357, < z= -5.1679, critical z score=-1.6449 ? =0.05 level of significance). Hence the p value is greater than the z value (p(x?Z) = 1.18357e-7), it indicates the webinar was effective and the null hypothesis (H0) is rejected. Conclusion: The study was concluded as the webinar was highly effective and influenced the participant to gain sufficient information on prevention and the spread of Covid 19. Hopefully this enables them to apply

scholarly journals The Antibacterial Efficacy of Biopure MTAD in Root Canal Contaminated with Enterococcus faecalis

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Blerim Kamberi ◽  
Donika Bajrami ◽  
Miranda Stavileci ◽  
Shuhreta Omeragiq ◽  
Fatmir Dragidella ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Sodium Hypochlorite Solution ◽  
Antibacterial Efficacy ◽  
Human Teeth ◽  
Exact Test ◽  
Hypochlorite Solution ◽  
Root Canals ◽  
Significant Difference ◽  
Level Of Significance

Aim. The purpose of this in vitro study was to assess the antimicrobial efficacy of Biopure MTAD against E. faecalis in contaminated root canals. Materials and Methods. Forty-two single rooted extracted human teeth were inoculated with E. faecalis and incubated for four weeks. The samples were divided in two control and five experimental groups irrigated with 1.5% sodium hypochlorite solution (NaOCl); 3% NaOCl; BioPure MTAD; 1.5% NaOCl/17% EDTA; or 3% NaOCl/17% EDTA. After a one-week incubation, complete disinfection was confirmed by the absence of turbidity in the incubation media. Dentin shavings were taken from samples with no turbidity to verify whether E. faecalis was present in dentin tubules. Results were analyzed statistically using Fisher's exact test, with the level of significance set at . Results. Statistical analysis of the data obtained at Day 7 and after dentin shaving analysis showed that BioPure MTAD had significantly greater antibacterial activity than 1.5% NaOCl, 1.5% NaOCl/17% EDTA and 3% NaOCl/17% EDTA. No significant difference was detected between MTAD and 3% NaOCl. Conclusions. These findings suggest that BioPure MTAD possesses superior bactericidal activity compared with NaOCl and EDTA against E. faecalis.

scholarly journals Effect of Nursing Guidelines on Coping of Infertile Couples Undergoing In Vitro Fertilization

2020 ◽  
Vol 2 (2) ◽  
pp. 11
Author(s):  
Gehan S. Abdelgelel ◽  
Shadia H. Muhsib ◽  
Mona H. Abdelaal ◽  
Randa M. Ibrahim
Keyword(s):  
In Vitro Fertilization ◽  
Coping Strategies ◽  
Unprotected Sex ◽  
The Body ◽  
University Hospital ◽  
Vitro Fertilization ◽  
Significant Difference ◽  
Infertile Couples ◽  
Nursing Guidelines

Context: Infertility is defined as not being able to conceive after one year of unprotected sex. In vitro fertilization (IVF) is a process of fertilization where an ovum is combined with sperm outside the body, in vitro. In vitro fertilization (IVF) is psychologically and emotionally stressful. Coping strategies are needed to master, tolerate, reduce, or minimize stressful events. Aim: This study aimed to evaluate the effect of nursing guidelines on coping of infertile couples' undergoing In Vitro Fertilization. Methods: A quasi-experimental research design was utilized to achieve the aim of this study. This study conducted at the assisted reproductive technology unit of Ain shams Maternity University Hospital on a convenient sample of 98 couples undergoing fertility treatments. Two tools were used for data collection; the first tool was a structured interviewing questionnaire to assess the couple's socio-demographic data, obstetric history, the couple's knowledge regarding in vitro fertilization. The second tool was ways of coping scale (WQS) to assess coping strategies among the infertile couple. Results: There is no statistically significant difference between couples in both groups according to their knowledge and their coping strategies to IVF before the implementation of nursing guidelines (p> 0.05). In contrast, there is a highly statistically significant improvement in knowledge and coping strategies of couples on the study group compared to control group couples after implementation of nursing guidelines(p<0.001). Conclusion: The finding of the current study supported the hypothesis, which stated that the infertile couples who will expose to the nursing guidelines, will exhibit improved coping strategies to IVF compared to the controls. The study recommended the application of nursing guidelines at the IVF unit of Ain Shams Maternity University Hospital and other settings for IVF treatment as routine care to improve infertile couples' coping strategies.

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