An in vivo study to evaluate the role of tooth's type and the position of Jaw in success or failure root canal treatment

The Rootcanal treatment is considered as the most accurate one followed in (( dentistry )), which need a right diagnosis and exact treatment steps to be performed completely for an excellent prognosis treatments ended by along time –perfect success.

Evaluation of the airway dimension changes after treatment of maxillary deficiency using Modified Tandem Appliance

The current study aimed to examine the effects of the modified tandem appliance on the dimensions of the airways. Pretreatment and post-treatment cephalograms of twelve patients with maxillary deficiency, (7 girls, 5 boys; mean age 8±0.5 years), who were seeking treatment at the Department of Orthodontics, Damascus University, were studied. These patients were treated using the modified tandem appliance with rapid maxillary expansion.

The relationship between the kind of facial growth and the Bony Support around the apexes of upper central incisors using ct scan

The research aim for testing the correlations between the morphology of the bone around the apexes of the central incisors and facial type.the sample consist of 59 patient.They were divided into three groups according to their facial Type.the result is three groups ,19 short face type, 20 norm face type, and 20 long face type patients, aged 19 to 40 years.we have measured many measurement that determine the relationship between the apex of central upper incisor and its surroundings. The measurements were processed using analysis of variance Anova and Mann-Whitney U-tests and (Correlation coefficient )r .We find that at the upper central incisors, In short face type subjects the root apex of the upper central incisors was farther away from the lingual cortex than in the norm face type and long face type. In long face type subjects the root apex of the upper incisors was farther away from the palatal plane than in the norm face type and long face type.

Three-dimensional Assessment of Skeletal Effects Following Rapid Maxillary Expansion Using Conebeam Computed Tomography

In this study, 24 patients with posterior skeletal cross-bite were treated at Orthodontics Department-Faculty of Dentistry in Hama University. Hyrax expansion device was applied in all patients and the results were assessed after active expansion period. Cone beam computed tomography radiograph were taken at the assessment times. Results showed that the midpalatal suture width has increased significantly at all measured areas. The results revealed that significant tipping in the canines , premolars and molars was recorded in this study.

Skeletal and Dentoalveolar Changes Following Surgically Assisted Rapid Maxillary Expansion by Using Buccal Corticotomy with Two Palatal Osteotomies ( Comparative Clinical and Radiographic study)

Maxillary stenosis is a common skeletal disorder. There are many surgical techniques used to treat maxillary stenosis in adults. One of these techniques is the surgically assisted maxillary expansion technique, around which studies differed in terms of surgical technique and the resulting structural and alveolar effects.

A Study of Nasal Cavity Width Change after Maxillary Expansion Using two Different Techniques

The constriction of Maxilla is considered a common disorder in daily clinical practice; which is usually accompanied with narrow nasal cavity. Many techniques are used to expand constricted maxilla; such as slow maxillary expansion and rapid maxillary expansion. The aim of this study is to evaluate changes in nasal cavity width after slow maxillary expansion by using Spring Jet II expander in late mixed dentition; and to compare them with changes caused by rapid maxillary expansion using Hyrax expander .