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Article
Comparative study of the effects of the denture liners on the mucosa of denture bearing area and on the denture hygiene

Authors: Fakrea I. Al-Azzawi --- Muneer Y. Kotane --- Ghada M. Mustafa
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2007 Volume: 19 Issue: 1 Pages: 50-54
Publisher: Baghdad University جامعة بغداد

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Abstract

ABSTRACT
Background: In this study an attempt was made to evaluate the effects of using denture liners on the oral mucous membrane of the denture bearing area.
Materials and methods: A sample of 36 patients coming to the clinic of the college of Health and Medical Technology were included in the research, and three types of denture liners were used (Hard process or heat cured, cold cured acrylic and soft liner).
Results: Soft liner exhibited viscoelastic behavior that lead to improvement in masticatory function, patients comfort compared with heat and cold cured liners. Soft liners had the least effects on the mucosa of denture bearing area, while heat cured liners showed little changes on the mucosa and high influences on the soft tissues properties by cold cured liners. Conclusion: Denture hygiene was found poor in cold cured liners, fair in both hard processed and soft liners.
Key words: Denture liners, denture hygiene, masticatory function. (J Bagh Coll Dentistry 2007; 19(1)50-54)

Keywords


Article
The effect of orthodontic relapse on the proliferation of fibroblast and epithelial rests of Malassez in periodontal ligament of rat molars (A histopathological study)

Authors: Munad J. Al-Duliamy --- Ghada M. Mustafa --- Omar A. Kader
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2013 Volume: 25 Issue: 4 Pages: 114-119
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Relapse of previously moved teeth, is major clinical problem in orthodontics with respect to the goals ofsuccessful treatment. This study investigated the effect of orthodontic relapse on the proliferation of fibroblast andepithelial rests of Malassez cells in periodontal ligament of rat molars.Materials and Methods: Sixteen ten-week- old male Wister rats were randomly divided into four groups composed offour animals each: Group I received no orthodontic force (control). In both Group II and Group III, uniformstandardized expansive springs were used for moving the maxillary first molars buccally for periods of one and threeweeks respectively. The spring initially generated an average expansive force of 20 g on each side. In Group IV thesprings were left for three weeks, until the maxillary first molars moved buccally, after that the springs were removedand the animals were scarified after three weeks of relapse tooth movement. After the humanly scarification ofanimals, each maxilla in all groups was dissected into two halves each half including the three maxillary molars andprocessed for histological examination. The number of both fibroblast and ERM cells in each cluster was counted inthe PDL of the pressure side of the mesio-buccal roots of the maxillary right and left first molars in all groups and thesurface areas of the ERM clusters were also measured in all groups.Results: The number of fibroblast was significantly increased at the end of active movement (Group III) andsignificantly very highly increased during the relapse period (Group IV). Regarding the ERM cells there werestatistically significant increase in both the number of cells in each ERM cluster and the surface areas of the ERMclusters in Group III and highly significant increase in Group IV, while Group II showed no significant differencesregarding all measurements.Conclusions: It was concluded that fibroblast and ERM cells may play an important role during orthodontic relapse


Article
Comparing the Effects of Denture Base Materials on Hygiene of Mucosal Denture Bearing Area

Authors: Ghada M. Mustafa --- Mohammed A. Abed AlBaki --- Sahar A. Naji
Journal: Tikrit Journal for Dental Sciences مجلة تكريت لعلوم طب الاسنان ISSN: 20731213 Year: 2014 Volume: 3 Issue: 1 Pages: 71-76
Publisher: Tikrit University جامعة تكريت

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Abstract

This study attempted to evaluate the effects of using partial denture on the oral mucous membrane of the denture bearing area between 48 patients attended the private clinic seeking RPD treatment , two types of denture material were used (Hard or heat cured acrylic partial denture and flexible(Nylon) partial denture) .Flexible dentures exhibited viscoelastic behaviour that lead to improvement in masticatory function and patients comfort compared with hard dentures .Flexible dentures showed little effects on the mucosa of denture bearing area and little changes on the mucosa, but there were high influences on the soft tissues properties with using hard acrylic denture type . Denture hygiene found mainly fair in both hard and flexible(nylon) denture base materials.


Article
Effects of Prenatal metallic mercury vapor exposure on the developing teeth of rats

Author: Ghada M. Mustafa B.D.S . M.Sc.* د. غادة مصطفى
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2006 Volume: 3 Issue: 2 Pages: 197-201
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

This Study represents an attempt to investigate histologically the effect of metallicmercury vapor on the developing rat teeth after inhalation by pregnant rats .In this study albino – wistar rats were used and divided into control andexperimental groups.The control group consisted of 8 pregnant rats, and the experimental groupconsisted of 12 pregnant rats. Then 20 born rats from the control group and 20 bornrats from the experimental group were selected to be sacrificed at the ages of (3&13)days.The specimens were prepared for processing and staining with haematoxylin andeosin, and examined under light microscope.Results showed no histological abnormalities in the dental tissue of theexperimental group when compared to that of the control group .This Study represents an attempt to investigate histologically the effect of metallicmercury vapor on the developing rat teeth after inhalation by pregnant rats .In this study albino – wistar rats were used and divided into control andexperimental groups.The control group consisted of 8 pregnant rats, and the experimental groupconsisted of 12 pregnant rats. Then 20 born rats from the control group and 20 bornrats from the experimental group were selected to be sacrificed at the ages of (3&13)days.The specimens were prepared for processing and staining with haematoxylin andeosin, and examined under light microscope.Results showed no histological abnormalities in the dental tissue of theexperimental group when compared to that of the control group .


Article
Denture Stomatitis in an Edentulous Iraqi Patients

Author: Ghada M. Mustafa B. D. S. M.Sc. د. غادة مصطفى
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2006 Volume: 3 Issue: 3 Pages: 255-258
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

Denture related stomatitis is an inflammatory process that mainly involves thepalatal mucosa when it is covered by complete or partial dentures; it appears frequentamong denture wearer and varies widely. Fifty patients were examined in this study,66% of them had denture stomatitis. This study aimed to evaluate the presence ofdenture stomatitis in denture wearers' patients, and to know the relation betweendenture age, denture hygiene, and denture cleansing with denture stomatitis.Results of the present study showed that poor denture hygiene was associated withhigh percentage of denture stomatitis.Also low percent of denture stomatitis appeared in the denture wearers of 3-4times/ day denture cleansing.The percentage of reduction in the prevalence of denture stomatitis was clear innewly or less years wearing dentures.


Article
The Effect of local injection of strontium on inhibition and repair of orthodontically induced root resorption in rats (An experimental study)

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Abstract

Background: Strontium (Sr) is an alkaline earth trace metal cation that has a highaffinity for hydroxyapatite. This study aimed to examine the histological effect oflocally injected strontium (Sr) on prevention and repair of induced root resorptionof rat molar subjected to orthodontic tooth movement.Materials and Methods: Eighteen ten-week- old male Wister rats were randomlydivided into two groups of nine animals for two experiments. In both experiments;uniform standardized expansive springs were used to move maxillary first molarsbuccally for three weeks and then removed. In experiment No.1, at the time ofspring placement, 0.25 ml of the strontium chloride solution at a concentration 240mg/ml was injected at the sub-periosteum of the buccal side of the maxillary leftfirst molar which was the experimental side. On other hand, 0.25 ml of distilledwater was injected at the sub-periosteum of the buccal side of the right maxillaryfirst molar which was the control side. The injections repeated every other day forthree weeks whereas in experiment 2 it was begun at the day of spring removal andrepeated every other day for another three weeks. After that the animals werescarified humanly and biopsies were taken for histological examination.Results: In experiment 1 the side injected with strontium showed statisticallysignificant lesser root resorption than control side, while in experiment two thestrontium injected side showed significantly more repair.Conclusion: Results of the study suggested that local injection of strontium caninhibit root resorption process and enhance repair.

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