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The aim of the study was to evaluate The relation between frontonasal complex and cases with class I, II, III Malooclousion. Material and methods: True lateral cephalometric radiograph of the sample that comprises 61 patienta of 34 females and 27 ma les aged 18-25 years.The data were analyzed using independent sample Student t-test, Anova analysis and Pearson correlation analysis. The results showed that significant differences between the value of front complsx and frontonasal angle and different malooclusion classes, but there were no significant differences between male and female according to frontal convex and frontonasal angle, However, the differences between classes according to frontal convex and frontonasal angle were found in females.
Malocclusion is considered one of the most prevalent dental problems .This research aimed to study the prevalence of malocclusion states in the Syrian coast community. The sample of study consists of 1200 patients in mixed dentition stage (569 male s – 631 females) with mean age (8.65 ± 1.4 years for male, 8.64 ±1.36 years for females). The study showed a prevalence of malocclusion in about 84.8% of the sample, with about 58.33% for vertical plane malocclusion and 84% for sagittal plane malocclusion, and 37.8% for transversal plane malocclusion. We concluded that it is very important to improve the hygiene awareness between our community population for better prevention and treatment of these problems.
This study was carried out aiming to investigate the accuracy of measurements , differences in linear and angular measurements of the craniofacial complex using both the two and three dimensional method of measuring in patients with different kind s of malocclusion ; and also to compare each kind of malocclusion to the others. The sample of the study consisted of 40 patients , divided into three groups – a group for each skeletal malocclusion , Cone Bean Computed Tomography (CBCT) was performed for each patient , then two dimensional radiographs were derived from the CBCT ; after performing the measuring , collecting the results and analyzing them statistically.
Objective: The aim of this study was to determine palatal and maxillary arch width changes during MBT PEA with maxillary first premolars extraction treatment in patients with Class II division 1 malocclusion. Material and Methods: Dental casts of 24 Class II division 1 patients (8 males and 16 females) were evaluated. The minimum age of the subjects at the beginning of treatment was above 16 years with mean age 02.02± 2.82. All patients were treated with extraction of the maxillary first premolars and MBT PEA. Pre- and post-treatment maxillary and palatal (inter-canine and inter-molar) widths were measured using a digital calliper of 0.01 accuracy. Paired samples t-test was used to evaluate the treatment changes within total sample and within males group and females group. Differences between males and females were tested using independent samples t-test. Results: At the end of treatment, maxillary and palatal inter-canine widths increased significantly (P>0.001).The maxillary inter-molar width increased but the values were statistically insignificant (P<0.05). The palatal inter-molar width increased significantly (P>0.01). No significant differences were observed between males and females. Conclusions: Class II division 1 patients treated with extraction of maxillary first premolars had tendency for an increase in palatal and arch width during treatment except maxillary inter-molar width. It seems that a more thorough assessment and investigation including pretreatment arch shape and factors related to anchorage should be carried out.
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