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Article
The Relation of Bruxism with Teeth Attri-tion and Condylar Asymmetry (Clinical and Radiological Assay)

Authors: Rand Sh Al-Ani --- Lamia T Rejab
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2011 Volume: 11 Issue: 2 Pages: 265-274
Publisher: Mosul University جامعة الموصل

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Abstract

Aim : The paper aims to evaluate the effect of teeth wear severity associated with bruxism on the con-dylar height asymmetry index among different gender using panoramic radiograph viewing technique. Materials and methods: One hundred fifty subjects were participate in this study. Seventy five were bruxers and seventy five were non-bruxers. Degree of tooth wear severity was graded using Smith and Knight method. The panoramic radiographs were taken for each patient using a panoramic apparatus to determine vertical mandibular height asymmetry indices by a method developed by Habets et al. Mann-Whitney U test, Kruskal-Wallis test and Pearson Chi-Square test were used to determine the possible statistically significant differences between groups set at (P ≤ 0.05).Results: The results showed there are significant differences between the vertical mandibular height asymmetry indices of the bruxers and non-bruxers subjects. The female bruxer subjects had the higher condylar index value than that of the male but statistically , there is no significant difference, while the severity of tooth wear had a signifi-cant different affect on the condylar indices. Conclusions: The results showed that the vertical man-dibular asymmetry indices were affected by the tooth wear associated with bruxer subjects. The bruxer subjects had the higher value than the non-buxer subjects and there is no significant difference of the condylar index of bruxer subjects among different genders. While , condylar index value increased significantly as the tooth wear severity grade increased.

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Article
Reliability of digital, panoramic and periapical radiological techniques in the assessment of marginal bone level

Authors: Rand Sh. Al-Ani رند العاني --- Abdul Satar S. Almaadhidi عبد الستار المعاضيدي --- FahadM. Al Dabbagh فهد الدباغ
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2011 Volume: 23 Issue: special issue Pages: 65-69
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: This study aimed to evaluate the reliability and repeatabilityof digital, panoramic and intraoralperiapical Radiological techniques in the assessment of marginal bone level.Materials and method: Digital, panoramic and periapical Radiological techniques were performed for forty eightrandomly selected patients between twenty five to the thirty five years of old. Dimax3 digital system pan/ceph,PLANMECA, Helsinki, Finland was used for panoramic Radiological techniques. Intraoral periapical exposurewas done using the same digital radiological system. The X-ray unit operated at range of 70-80 kV and 10-12 mA according to the patient age for panoramic technique while 70KV,8Ma for periapical techniquewhich was done according to the user manual of the machine.Posterior periapical image were taken by paralleling technique. Five observers assessed the marginal bone level inboth techniques independently.Results: Assessments of the marginal bone level by five observers for both techniques were analyzed by pairedsamples t-test, Anova test and reliability test. The statistical analysis of marginal bone level show no significantdifferences in periapical radiological techniques, while in panoramic radiological techniques shows high significantdifferences between the observers.Reliability test (used for measuring the degree of agreement between the first observer and other observers), showhigh degree of agreement in periapical technique than panoramic technique in assessment of alveolar bone level.The overall agreement in periapical technique for observer one and two, three, four, five was 81.3%, 93%, 90.1%,75.6% respectively. While in panoramic radiography was 51.7%, 19.2%, 35.8%, 28.2% respectively.Conclusion: It was concluded that digital periapical view could be considered the radiological techniqueexamination of choice for assessment of marginal bone level, comparing with digital panoramic technique.

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