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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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