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Article
The cytotoxic effect of different intracanal medicaments

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Abstract

Background: Different intracanal medicaments are being used in endodontics but little attention is paid to their cytotoxicity. The aim of this research was to assess the cytotoxic effect of the traditionally used intracanal medicaments and compare them with 2% acetic acid.Materials and Methods: Different intracanal medicaments and 2% acetic acid were inoculated in the tibia bone of white albino rabbits for 3, 7, 14 and 28 days. After the incubation time, the animals were sacrificed and the inoculated areas were assessed histopathologically.Results: Two percent acetic acid induced an inflammatory reaction comparable to that of normal saline, and calcium hydroxide that subsided after 14 days. The formaldehyde containing agents, and CMCP induced a more severe inflammatory reaction, with tricresol formalin showing a reaction even after 28 days.Conclusions: Two percent acetic acid was more biocompatible than the other tested root canal medicaments.


Article
Antibacterial Effect of Local Propolis Extracts and Pastes Against Enterococcus Faecalis

Authors: Jumana A. AL-Jawadi --- Ghada Y. Abdul Rahman --- Makdad N.Chakmakchi
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2014 Volume: 14 Issue: 29 Pages: 189-195
Publisher: Mosul University جامعة الموصل

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Abstract

AIMS:The aim of this study was to determine the antibacterial effect of ethanolic and aqueous extracts and pastes of propolis against Enterococcus faecalis and compare it with that of calcium hydroxide (intracanal medicament) (in vivo and ex vivo). MATERIALS AND METHODS:The antibacterial effect of the 30%,40% ethanolic and aqueous extract of propolis as well as of calcium hydroxide were detected by the turbidity method. The turbidity of the bacterial cultures was measured by light absorption in spectrophotometer and the antibacterial effect of propolis pastes prepared from ethanolic extract as well as that prepared from aqueous extract was examined on teeth and compared with that of calcium hydroxide by colony counting method. The result were analyzed by ANOVA test and Post Hoc tests.


Article
Comparison the PH of roots after intra canal placement of four types of calcium hydroxide (An in vitro study)

Author: Dr. Ihsan N. Kaka. B.D.S, M.Sc. * د. احسان نافع كاكا
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2013 Volume: 10 Issue: 1 Pages: 8-16
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

The successful outcome of endodontic treatment depends on the reduction orelimination of bacteria present in an endodontic infection. It has been reported thatchemo-mechanical instrumentation alone is not enough for this purpose.The purpose of this in vitro study was to compare the pH changes that occurredover a period of 14 days using four types of calcium hydroxide. Four types of calciumhydroxide materials were filled in fifty extracted single rooted teeth which were keptin individual vials containing distilled water at a pH of (7.4). Digital pH-meter wasused to measure the pH of different groups at two hours, 24 hours, 7 days & 14 daysafter immersion of the specimens. The mean pH was found for all groups andstatistical analysis was carried out using ANOVA and POST HOC TEST (LSD).Calcium hydroxide was found to significantly raise the root PH. Therefore calciumhydroxide is an effective choice in clinical practice to be used as intra canalmedicament between appointments.


Article
The incidence of posttreatment pain using two different intracanal medicaments

Author: Dr. Iman M. Al-Zaka. B.D.S, M.Sc. د. ايمان محمد
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2007 Volume: 4 Issue: 2 Pages: 110-116
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

AbstractThe purpose of this study was to compare the incidence of posttreatment pain to two medicaments placed in the root canal system. One hundred teeth belonging to 100 patients were included in this study. All teeth under went conventional root canal, which involved the instrumentation to the apices of each canal at the first visit. Canals were instrumented using a step-back technique and hand-files along with irrigant. The canals were dried and one of the following two medicaments was inserted into the canal: group I: Chlorhexidine- containing gutta-percha point; group II Calcium hydroxide- containing gutta-percha point. All teeth were temporized with intermediate restorative material. Patients' assessed posttreatment pain up to 48 hours as none, mild, moderate, or sever. The pain levels in each test group at each time period were compared statistically with Chi-square test, a significant difference was found in posttreatment pain between the two groups at 4h and 24h. No significant difference in posttreatment at 48h.


Article
Effect of different impregnated gutta-percha points on post operative discomfort

Author: Dr. Jamal A. Mehdi, B.D.S., M.Sc. (Assistant Prof.) د.جمال عزيز مهدي
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2007 Volume: 4 Issue: 2 Pages: 102-109
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

The purpose of this study was to compare levels of post operative discomfort after cleaning and shaping of root canals using intracanal medicaments. Two hundreds forty teeth requiring root canal treatment were included. At random, canals were cleaned and shaped with crown-down technique and then dried and one of the following medicaments was used. Group I: medicated with chlorhexidine containing gutta-percha points (Activ points). Group II: medicated with calcium hydroxide containing gutta-percha points and finally group III: with no medicaments. Access cavities were closed with a sterile cotton pellet and cavit. The patients recorded degree of discomfort of various time intervals after cleaning and shaping on a visual analogue scale for 72hr. A significant statistical difference was found in the degree of discomfort between the three groups.


Article
Effect of Tea Tree, Thymus Vulgaris and Nigella Sativa Oils on The Elimination of Enterococcus Faecalis (In Vitro Study)

Authors: Rafid J. Al-Badr --- Hussain F. Al-Huwaizi حسين فيصل الحويزي
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2017 Volume: 29 Issue: 1 Pages: 55-62
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: The main goal of chemomechanical endodontic treatment is the reduction or elimination of microorganisms from root canal system. The intracanal medicaments were used to enhance the disinfection process. This study was conducted to evaluate the antibacterial effect of thymus vulgaris, tea tree essential oils and cold pressed black seed oil (BSO) against E.faecalis.Materials and methods: E.faecalis was isolated from ten patients in need for endodontic treatment. The sensitivity of E.faecalis to the tested oils was evaluated in different concentrations in agar well diffusion method and compared with calcium hydroxide. The sensitivity of E.faecalis to vapor of the tested oils was also evaluated, in disk vaporization method using inverted agar plate and compared to tricresol formalin (TC) and camphorated monochlorophenol (CMCP).The micro broth dilution method was used to evaluate the minimum inhibitory concentration (MIC) and the minimum bactericidal concentration (MBC) of the tested oils against E.faecalis. The presence of biologically active volatile components of two samples of BSO with different origins was evaluated by the use of high performance liquid chromatography (HPLC).Results: All the tested oils exhibited antibacterial activity against E.faecalis in different concentrations with different levels in agar well diffusion and disk vaporization methods. The MBC was 2μl/mL, for thymus vulgaris oil and 32μl/mL for tea tree and Black seed oils. The vapor forming medicaments (TC and CMCP) induced effective antibacterial action but calcium hydroxide showed a low antibacterial action against E.faecalis. The active volatile components were present in one sample of BSO only (the Iraqi one).Conclusion:The three oil extracts were active against E.faecalis, and the origin, condition of storage and method of extraction may affect the components of cold pressed black seed oil

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