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Article
Caries severity in relation to oral health knowledge and behavior of third and fifth year dental students / University of Baghdad (A comparative study)

Author: Nibal M. Hoobi
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2014 Volume: 26 Issue: 3 Pages: 164-168
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: The knowledge of dental students is important because these individuals are the future dental healthproviders. The purpose of the present study was to explore the severity of dental caries in relation to oral healthknowledge and behavior between two different grades of undergraduate dental students in the College of Dentistry/ University of Baghdad.Materials and methods: One hundred dental students were included in this study (50 third years and 50 fifth yearstudents). A questionnaire was distributed among them to evaluate their oral health knowledge and behavior.Dental students were examined for recording of dental caries severity.Results: Data analysis revealed that third year dental students had higher mean of decayed surfaces (DS) andmissing surfaces (MS), compared to the other group, the difference was statistically highly significant (P<0.01) for DSand significant for MS (P<0.05), while fifth year dental students were found to have higher mean value of filledsurfaces (FS) and the difference was highly Significant (P<0.01). However, higher DMFS value was recorded for finalyear students without any significant difference. Oral health knowledge was better for fifth grade and the differencewas highly significant (p<0.01) except for the question about complete removal of dental plaque by brushing only,the difference was significant (p<0.05) .Oral health behavior of third grade students was at lower level, the differencewas highly significant (P<0.01) except for the questions about frequency of brushing and sweet eating, it wassignificant (p<0.05) and it was not significant difference regarding use of siwak.Conclusion: The findings of this study highlights that increase the theoretical education of dental students in additionto clinical experience will improve their oral health knowledge and behavior, which in turn affect positively the oralhygiene towards health promotion and prevention of oral diseases

كا ن الغرض من ھذه الدراسھ ھو معرفة مدى شدة تسوس الاسنان وعلاقتھا بمعرفة صحة الفم و السلوك بین مرحلتین مختلفتین من طلاب كلیة طب الاسنان /جامعة بغداد شملت ھذهالدراسھ مائة طالب (خمسون طالب من المرحلھ الثالثھ وخمسون طالب من المرحلھ الخامسھ).وقد تم توزیع استبیان مكون من مجموعة اسئلھ فیما بینھم لتقییم معرفتھم بصحة الفموالسلوك بالاضافھ الى فحص شدة التسوس لھؤلاء الطلاب.وكشف تحلیل البیانات ان طلاب المرحلھ الثالثھ لدیھم متوسط اعلى من الاسطح المتسوسھ والاسطح المفقوده وكان الفرقاحصائیا معنویھ عالیھ للاسطح المتسوسھ في حین كان طلاب السنھ الخامسھ لدیھم قیمھ اعلى لسطوح الاسنان التي تم علاجھا وكان الفرق احصائیا معنویھ عالیھ وسجلت قیمھ اعلىلمجموع الاسطح المتسوسھ والمفقوده والمعالجھ لطلاب المرحلھ الخامسھ وكان الفرق احصائیا غیرمعنوي.كانت معرفة صحة الفم والسلوك الصحي افضل للمرحلھ الخامسھ.اوضحتھذه الدراسھ ان التعلیم النظري لطلاب المرحلھ الخامسھ بالاضافھ الى الخبره السریریھ ادت الى تحسین معرفتھم بصحة الفم والسلوك وھذا بدوره اثر ایجابیا على العنایھ بالفم نحوتعزیز الصحھ والوقایھ من الامراض.


Article
Concentrations of selected elements in saliva among a group of adolescent girls in relation to severity of caries and selected salivary parameters

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Abstract

Background: Saliva is one of the most important etiological host factors in relation to dental caries. It affects thecarious process by its organic and inorganic constituents; in addition to its physiological functions as (flow rate, pHand buffer capacity). The aims of this study were to determine the concentrations of major elements (calcium andphosphorus) and trace elements (ferrous iron, nickel, chromium and aluminum) in saliva among a group ofadolescent girls, and to explore the relation of these elements, flow rate and pH with dental caries.Material & Methods: The study group consisted of 25 girls with an age of 13-15 years old. Dental caries was diagnosedby both clinical and radiographical examinations following the criteria of D1-4MFS index. Stimulated saliva wascollected from patients between 9-11 Am under standarized conditions, and chemically analyzed to determine theconcentration of calcium, nickel, chromium and aluminum by Atomic Absorption Spectrophotometer, while salivaryphosphorus and ferrous iron were determined by using colorimetric method. The average salivary flow rate wasmeasured from total volume, and salivary pH was determined using digital pH meter. All data were analyzed usingSPSS version 19.Results: All elements measured in saliva in addition to P/Ca ratio recorded statistically non significant correlation withDMFS, except ferrous Fe ions which showed statistically significant correlation (r= 0.34, P=0.05). Salivary flow rate andpH correlated weakly and statistically not significant with DMFSThere were weak and statistically not significant correlations between all elements measured in saliva and salivaryflow rate and pH.Conclusions: It had been found that Fe, Ni, Al and Cr ions present in very small amounts in saliva in comparison to Caand P ions. The presence of these elements in saliva may indicate their presence in food, water and air


Article
Concentrations of selected elements in permanent teeth and enamel among a group of adolescent girls in relation to severity of caries

Authors: Shahba’a M. Al-Jorrani شهباء الجوراني --- Sulafa K. El- Samarrai سلافة السامرائي
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2013 Volume: 25 Issue: 1 Pages: 176-180
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Human teeth considered to be an important etiological host factor in relation to dental caries throughits morphology and composition. Elements may incorporate in tooth structure during pre and post-eruptive periodchanging the resistance for caries. The aims of this study were to determine the concentration of selected major(Calcium and phosphorus) and trace elements (Ferrous iron, nickel, chromium and aluminum) in permanent teethand enamel among a group of adolescent girls in relation to severity of dental cariesMaterial and Methods: The study group consisted of 25 girls with an age of 13-15 years old referred by Orthodontistsfor extractions of upper first premolars (two sides). Tooth and enamel samples were prepared for chemical analysisaccording to method described by Lappalainen and Knuttila (1979). Dental caries was diagnosed by both clinicaland radiographical examinations following the criteria of D1-4MFS index described by Muhlemann (1976). All datawere analyzed using SPSS version 19.Results: The concentration of major elements in teeth and enamel (measured in % of dry weight) showed that Caions were higher than P ions. On the other hand the concentration of trace elements in teeth and enamel samples(measured in ppm) showed that Al ions was the highest followed by Ferrous Fe then Ni ions, while Cr ions were theleast in concentration. All elements showed statistically highly significant difference in concentration between teethand enamel samples. Ca/P ratio was higher in enamel than tooth, but the difference was statistically not significant.Major elements (calcium and phosphorus) in tooth and enamel samples recorded negative correlations with DMFS.Trace elements except chromium ions recorded positive correlations with DMFS. They were not significant except fornickel ions in tooth and aluminum ions in enamel.Conclusions: The presence of these elements in both teeth and enamel samples indicated that these elementspresent in our environment; as foods, water, and air so they incorporate through out the tooth layers during the preeruptiveperiod of tooth development, and incorporate the outer enamel surface during the demineralization andremineralization processes that occurs in the post-eruptive periods. Ca and p ions play an important role inmineralization of tooth and enamel. Cr ions may play a role in improving mineralization and crystallity of teeth, whileFe, Ni and Al may act as cariogenic elements

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