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Article
Evaluation of Canal Transportation Using Single File Rotary Systems, One Shape, Waveone GOLD and Reciproc in Simulated Curved Canals (in Vitro Study)

Author: Eanas Ittihad Jellil ايناس اتحاد جليل
Journal: Tikrit Journal for Dental Sciences مجلة تكريت لعلوم طب الاسنان ISSN: 20731213 Year: 2017 Volume: 5 Issue: 1 Pages: 121-125
Publisher: Tikrit University جامعة تكريت

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Abstract

Objectives maintaining root canal anatomy through minimal canal transportation by usingRotary single file systems: One Shape, Wave One Gold and Reciproc systems used insimulated artificial curved root canals. Materials and Methods 30 simulated curved rootcanals in clear resin blocks were used in this study and divided into three groups containing10 samples each: group (1) represented canals instrumented with Rotary One Shape files,group (2) canals instrumented with reciprocating Wave One Gold files while Group (3)canals were prepared with Reciproc files. All canals were imaged pre- and postinstrumentationat three levels, 2,3 and 5 mm apically and compared using Adobe Photoshopsoftware program. Amount of transportation were assessed. The three groups were comparedwith ANOVA and LSD statistic tests Results the mean transportation at 3mm level of thecanal had no significant difference among all groups, all shown transportation. At 2mm, and5mm levels there were significant difference between groups, G2 shown the leasttransportation among all groups. Conclusions Within the limits of this study, the canalpreparation with Wave One Gold files showed lesser transportation than One Shape andReciproc files.

Keywords

Root canal --- Rotary --- curve


Article
The solubility of a zinc oxide eugenol root canal sealer (Endofil) in normal saline solution at different time intervals

Authors: Suhad J. Hemed سهاد حمد --- Waleed M. Khalil وليد خليل --- Saif Al Arab A. Mohammed سيف العرب محمد
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2005 Volume: 17 Issue: 3 Pages: 4-7
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: The solubility of the root canal sealers is undesirable, because the process of dissolution may result in gaps and voids along the sealer-dentine or sealer-gutta percha interface. The aim of this study was to assess the solubility of zinc oxide based sealer (Endofil) in normal saline solution at different time intervals.Materials and methods: Fifty standardized plastic ring moulds were constructed and filled with Endofil sealer. The specimens were allowed to dry for 24h then weighed to the nearest 0.0001g .The samples were divided randomly into 5 groups and immersed in normal saline solution for 1,7,14,28 and 56 days. The samples were removed from the solution after completing the specified immersion period and allowed to dry for 24h. Then they were weighed, the percentage weight loss was then determined.Results: The percentage weight loss was less that 3% for immersion periods not exceeding 14 days and increased up to 5.4% for the 56 days. The statistical analysis of the results revealed a non significant difference between 1 and 7 days immersion time groups, while the differences between other groups were statistically significant.Conclusion: Under the conditions of the present study, the Endofil sealer met the International Standard ISO requirement for at least 14 days. The solubility rate of the sealer increased gradually from the first day till the 56 th days, but it remained within the acceptable limits for only 14 days.


Article
The bactericidal efficiency of Chlorhexidine as an endodontic irrigant

Authors: Abdul–Haq A Suleiman --- Ghada Y Abdul–Rahman --- Wiam M. Al–Ashou
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2006 Volume: 6 Issue: SpIss Pages: S71-S78
Publisher: Mosul University جامعة الموصل

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Abstract

to determine the bactericidal efficiency of 0.75% Chlorhexidine in vitro . The time required for this irrigant to start its antimicrobial effect on the selected microorganisms isolated from the infected root canals and unidentified samples taken from root canals with necrotic pulps were evaluated. Materials and Methods: The substantive antimicrobial effect of 0.75% Chlorhexidine in vitro is also considered. Samples taken from 13 teeth with necrotic pulp from patients attended the Department of Conservative Dentistry, College of Dentistry at Mosul University. The turbidity method was applied to determine the antimicrobial effect of 0.75% Chlorhexidine and the combination of 0.5% Chlorhexidine and 0.5% sodium hypochlorite comparing with the antimicrobial effect of 2.5% sodium hypochlorite, the time required for these materials to start their antimicrobial effect on the selected microorganisms was determined using contact test. The antimicrobial effectiveness were evaluated at different time intervals, immediately, 5, 10, 15 minutes after the contact of the microorganisms with the irrigating solutions. Results: Both 0.75% Chlorhexidine and 2.5% sodium hypochlorite are effective on microorganisms collected from root canal. There is no significant difference between Chlorhexidine and sodium hypochlorite in their antimicrobial effect on the anaerobic microorganisms, but Chlorhexidine is more effective on the aerobic microorganisms. Conclusion: Chlorhexidine 0.75% and 2.5% sodium hypochlorite has an immediate effect on the selected microorganisms and unidentified samples from the teeth with necrotic pulps. The combination of Chlorhexidine 0.5% and 0.5% sodium hypochlorite has an effect started after 5 minutes


Article
Evaluation of the Antimicrobial Effect of Ethanolic Extracts of Sage and Rue as a Root Canal Irrigants (An In Vivo Study).

Author: Maha M Al –Bazzaz
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2011 Volume: 11 Issue: 18 Pages: 310-316
Publisher: Mosul University جامعة الموصل

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Abstract

Aims: To evaluate the antimicrobial effect of the ethanolic extracts of Ruta graveolens (Rue) and Sal-via officinalis (Sage) in a concentration of 0.2% and compare the results with the same concentration of chlorhexidine 0.2% (CHX) and normal saline on root canal bacteria using the above plant extracts as an irrigating solutions clinically. Materials and Methods: Thirty five uniradicular teeth with necrotic pulps were chosen. The patients were divided randomly into four groups, 10 patients for groups I, II and III and 5 patients for group IV. Using 0.2% ethanolic extract of Sage, 0.2% ethanolic extract of Rue, 0.2% chlorhexidine gluconate (CHX) and normal saline, respectively. Samples were obtained from the canal at the beginning of the first and second appointments, at the end of the second appoint-ment and at the beginning of the third appointment using wet sterile paper points. Results: The results revealed that 0.2% of the ethanolic extract of both Sage and Rue have a significant antimicrobial effect when used clinically as an endodontic irrigant, and was significantly not different from 0.2% chlorhex-idine gluconate (CHX) and significantly different from normal saline. Conclusions: Rue and Sage demonstrated antimicrobial effects on the root canal bacteria (both aerobic and anaerobic) used as en-dodontic irrigants compared with CHX.


Article
The antimicrobial effect of water extraction of Salvadora persica (Miswak) as a root canal irrigant

Authors: Talal H Al–Salman --- Moataz Gh Al–Shaekh Ali --- Osama M Al–Nu’aimy
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2005 Volume: 5 Issue: 5 Pages: 33-36
Publisher: Mosul University جامعة الموصل

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Abstract

The aim of this study was to evaluate the antimicrobialeffect of 10% water extraction of Salvadora persica (Miswak)when used clinically as an endodontic irrigant.Twenty four uniradicular teeth with necrotic pulps werechosen. The patients were divided randomly into 2 groups:Experimental group, in which water extract of Salvadorapersica (10%) was used as a root canal irrigant; and controlgroup, in which distilled water was used as a root canal irrigant.Bacteriological samples were obtained from the canal atthe step of working length determination (before the canalwas subjected to instrumentation and irrigation procedures),and at the end of the biomechanical instrumentation proceduresby using a sterile K–file. The file was separated from thehandle using a sterile wire cutter, and the severed portion wasplaced in a sterile screw–capped vial containing 5 ml of thioglycollatebroth as a transport media. A 0.1 ml of thioglycollatebroth was inoculated on each of two brain–heart infusionagar plates: One plate was incubated under aerobic conditions,and the other was incubated under anaerobic conditionsusing anaerobic jar and gas pack anaerobic system. Both plateswere incubated at 37 ºC for 24 hours; then, the number ofbacterial colonies was counted.The results revealed that 10% water extraction of Salvadorapersica is an effective antimicrobial agent when utilizedclinically as an irrigant in the endodontic treatment of teethwith necrotic pulps.


Article
Radiographic evaluation of the anatomy of endodntically treated maxillary premolars in Iraqi group

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Abstract

order to determine the number of root canals and the number of apicalforamens, 1528 endodontically treated. Teeth were examined. Out of 777 maxillary firstpremolars 9.1% had one canal, (8.6% of them had one apical foramen and 0.5% had twoforamens) and 89.7% had two canals (8.5% had one apical foramen and 81.2% had twoapical foramens). Only 1.2% of examined teeth had three canals and three foramens. Outof 751 maxillary second premolars 68.6% had one canal (65.1% of them had one apicalforamen and 3.5% had two apical foramens) and 31.4% of teeth had two canals (11.9% ofthem had one apical foramen and 19.6% had two apical forameris


Article
Evaluation of the push-out bond strength of root canal obturation materials filled by four different obturation techniques

Authors: Saif N, --- Nawal A. Al Sabawi نوال السبعاوي --- Maha M. Yahya مها يحيى
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2014 Volume: 26 Issue: 2 Pages: 37-43
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: The aim of this study was to comparatively evaluate the push out bond strength (PBS) of root canalfillings using four different obturation techniques (single cone (SC), cold lateral compaction (CLC), continuous wave(CW), and carrier based gutta percha (CBG)).Materials and Methods: Forty mandibular premolar decoronated and instrumented with rotary ProTaper to F3 thenteeth were divided randomly into 4 groups of 10 teeth for each as follow: group (I) single- cone obturation withmatched-taper gutta-percha, group (II) cold lateral compaction technique, group (III) continuous wave ofobturation technique, and group( IV) carrier based gutta-percha technique. Zinc oxide eugenol (ZOE) sealer wasused as a root canal sealer for the four groups. After obturation of the root canals, all the roots were sectionedhorizontally at three levels in the apical, middle, and cervical thirds of each group. PBS test was performed usingdigital universal testing machine. Mode of failures was evaluated using digital stereomicroscope (40 X). Collecteddata were analyzed statistically using one way ANOVA and Tukey test.Results: PBS of CW and CBG significantly higher than SC and CLC, but significantly there were no differencesbetween CW and CBG, and between SC and CLC.Conclusion: Under the condition of this study it can be concluded that thermoplasticized techniques obtain superiorPBS of the filling materials in comparisons with cold gutta percha obturation techniques


Article
Relation of Mandibular Canal to the Root Apices of Different Types of Impacted Mandibular Third Molars Using Panoramic Radiographs in Iraqi Sample

Author: Alaa Salah Mahdi علاء صلاح مهدي
Journal: Tikrit Journal for Dental Sciences مجلة تكريت لعلوم طب الاسنان ISSN: 20731213 Year: 2017 Volume: 5 Issue: 2 Pages: 75-80
Publisher: Tikrit University جامعة تكريت

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Abstract

The lower third molar is the most teeth failed to erupt in thealveolar process and the surgical extraction of lower third molar iswidely carried out in the dental clinic due to pathologic changeand prophylactically purpose, the damage of the inferior dentalcanal can be occurred when the lower third molar located deep andits root is closely to the inferior dental canal, the aim of this studywas to investigate the prevalence of the types of impacted lowerthird molar between male and female and to determine theradiographic relationship of the inferior dental canal to the rootapices of different types of the impacted lower third molar usingdental panoramic radiograph, eighty (80) panoramic radiographicimages ,40 male 40 female aged (18-41) were selected from thepool of data stored in the computer of the digital panoramicmachine, the teeth were divided according to the relation to thelower 7th molar (angulation), and the relation of the root apices tothe inferior dental canal according to the distance of root apicesfrom the inferior dental canal either far, close , superimposed. Theresult of this study showed that the mesioangular type ofimpaction is the most closely positioned to the inferior dentalcanal , and this may represent an independent risk factor forpostoperative paraesthesia, the majority of patients showed theposition of the inferior dental canal varies in relation to the rootapices of impacted mandibular third with the majority being inadjacent position , The superimposed relation of roots apices ofthe mesioangular impaction in male was 32% while in female was46% so the risk of the damage to the mandibular canal in femalemore than the male during the surgical extraction of lower thirdmolar, this variation should be appreciated by the oral surgeonwhen undertaking surgical extraction of the impacted mandibularthird molars.


Article
Push Out Bond Strength of GuttaFlow 2, Thermafil and Guttacore (An Invitro Study)

Authors: HaidarT.F. Elmuttalibi --- Jamal Aziz Mahdi
Journal: Journal of Oral and Dental Research مجلة طب الفم والاسنان ISSN: 23106417 Year: 2019 Volume: 6 Issue: 1 Pages: 7-16
Publisher: Iraqi Association for Oral Research الجمعية العراقية لبحوث طب الفم

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Abstract

Background Several root canal filling materials and techniques have been developed and studied, aiming to completely fill the root canals, their ramifications, and any anatomical variations, which are frequently observed. The objective is to investigate the push out bond strength of three different obturation materials GuttaFlow 2, Thermafil and GuttaCore at different levels. Materials and methods thirty extracted upper molars were collected and the palatal roots were sectioned at the CEJ of the tooth. The platal roots were instrumented with Hyflex CM rotary files to the size of 40/0.06. The instrumented samples were divided into three groups of ten samples each, the first group was obturated with GuttaFlow 2, the second group was obturated with Thermafil and the third group was obturated with GuttaCore obturating materials. After an incubation period of 7 days, each sample were sectioned into three sections of 2 mm thickness (apical, middle, coronal), each slice then introduced to the push out testing using a universal testing machine at a cross head speed of 0.5 mm/min.Results it showed Push-out bond strengths were significantly higher when canals were filled with GuttaCore than those filled with Thermafil and GuttaFlow 2. And Thermafil showed a higher significant difference than the GuttaFlow 2. It also showed that the bond strength values decreased from the coronal to the apical direction. Conclusion The thermoplasticized gutta-percha appears to achieve higher push out bond strength values than the cold flowable gutta-percha. With GuttaCore showed higher push out bond values than Thermafil.


Article
Retrospective Assessment of the Success Rate of Single-Visit Root Canal Treatment: A Clinical and Radiographical Analysis

Author: Ali M. Rashid
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2008 Volume: 8 Issue: 11 Pages: 104-109
Publisher: Mosul University جامعة الموصل

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Aim: The purpose of this study was to determine retrospectively, clinically and radiographically the suc-cess rate of single–visit root canal treatment and determine the possible factors that could affected there prognosis.Materials and Methods: nine–hundred and sixty–five single–visi1 cases, of which 322 present for re–examination appointment ranging from 6 months to 5 years from the day of treatment were considered. Clinical and radiographical data were used to form overall impression of the outcomes for each case at the time of re–examination. Available demographics and treatment information of these 322 cases were compiled for comparison. The number of treatment visits was not determined by a pre-treatment diagnosis or a re–assessment of the pulp status upon entry in to the tooth; therefore both vital and necrotic cases, as well as those with and without periradicular pathosis, Were included. Statistical analysis was carried out using Chi–square test and considered variations in failure rates based on gender, tooth type, position and arch. A t–test was used to evaluate data on age. Results: The overall success rate was 92.8%. No statistically significan1 differences were seen based on gender and arches. The data show almost younger ages more candidate for failure rate than older age group. Statistically, anterior teeth were more successful than posterior teeth. Conclusion: The success rate of single–visit root canal therapy was engorgement for this approach .Both gender and arches were not affecting the treatment outcome in this study, where as the treatment for older age and anterior teeth more successful than younger and posterior teeth respectively.

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