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Article
The skeletal features of Iraqi adult nasal obstruction sample (A posteroanterior cephalometric comparative study)

Authors: Saief A. Mustafa سيف مصطفى --- Ausama A. Al-Mulla اسامة احمد الملا
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2012 Volume: 24 Issue: 1 Pages: 127-132
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Chronic respiratory obstruction can be produced by prolonged inflammation of the nasal mucosaassociated with allergies or chronic infection. It can also be produced by mechanical obstruction any where withinthe nasorespiratory system from the nares to the posterior nasal change. There may be a relation between theskeletal features of the facial skeleton and the respiratory pattern and this relation should be studied carefully. Thisstudy aimed to study and compare the relation between the nasal obstruction and the skeletal features of the facialskeleton in adults between the sample and control groups and to find the Pearson correlation coefficient betweenthe variables related to the nasomaxillary complex for the sample and control groups.Materials and methods: The sample is composed of 50 Iraqi Arab adult patients out of 167 with age range from 18-35years, having nasal obstruction had been examined in Tikrit general hospital and identified by the E.N.T. specialist.The control group will be 50 subjects out of 150 in the same age group and also had been examined and identifiedby the E.N.T specialist in Tikrit general hospital as having no nasal obstruction. Twelve linear measurements and a ratiowere determined on each radiograph. For each variable, the arithmetic mean, the standard deviation, and thestandard error were calculated. For statistical evaluation, an independent-samples t-test was performed. ThePearson correlation coefficient was calculated to indicate the relationship between nasal and maxillary variables.Results: There was no significant difference between the sample and control groups for the skeletal features of thefacial skeleton except the ramal height of the right and left sides and there was weak correlation between the nasaland maxillary variables for the sample and control groups.Conclusion: There is no effect of the nasal obstruction on the skeletal features of the facial skeleton in Iraqi adultsample.


Article
Tooth attrition patterns in a group of Iraqi adults sample with different classes of malocclusion (A comparative study)

Authors: Issam M. Abdullah عصام عبد الله --- Ausama A. Al- Mulla اسامة احمد الملا
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2012 Volume: 24 Issue: 2 Pages: 114-119
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Tooth attrition is wearing away of tooth structure during mastication. This study investigated tooth wearpatterns in adults with different classes of malocclusion and compared them with normal occlusion.Materials and methods: The sample consisted of 363 subjects that were divided into 5 groups with an age range “18-25” years: 85 normal occlusion, 128 class I with crowding, 90 class II division 1, 30 class II division 2 and 30 class III.Dental wear was assessed by using a modified version of the tooth wear index.Results:1. The class I malocclusion group had statistically greater tooth wear in incisal surfaces of maxillary central and lateralincisors, and mandibular lateral incisors than did the normal occlusion.2. The class II division 1 group had statistically greater tooth wear in the occlusal surfaces of maxillary secondpremolars, mandibular first and second premolars. Buccal surfaces of mandibular canines, mandibular secondpremolars and mandibular first molars than did the normal occlusion.3. The class II division 2 malocclusion group had statistically greater tooth wear in labial surfaces of mandibularcentral and lateral incisors. Buccal surfaces of mandibular second premolars, mandibular first molars. Occlusalsurfaces of maxillary first and second premolars and mandibular second premolars than did normal occlusion.4. The class III malocclusion group had statistically greater tooth wear in the occlusal surfaces of maxillary first andsecond premolars than did normal occlusion.Conclusion: In conclusion subjects with normal occlusion and those with different classes of malocclusions havedifferent tooth wear patterns

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