There are about 83 clinical studies being (or have been) conducted in Syrian Arab Republic. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
This study will evaluate the efficacy of rapid maxillary expansion (RME) and slow maxillary expansion (SME) in treating posterior crossbite using cone beam computed tomography. The study sample will consist of 32 patients who suffer from a skeletal posterior crossbite. The sample will be allocated randomly into two groups: RME group and SME group. The skeletal and dento-alveolar changes occurring after treatment will be assessed by using cone beam computed tomography(CBCT) radiographs.
Patients at the Orthodontic Department of University of Damascus Dental School will be examined and subjects who meet the inclusion criteria will be included. Then, initial diagnostic records (diagnostic gypsum models, internal and external oral photographs, as well as radiographic images) will be studied to ensure that the selection criteria are accurately matched. The aim of this study is to compare flapless bone cutting by mechanical drills to evaluate the acceleration of the retraction of upper canines versus traditional bone cutting by piezo-surgery in comparison with a control group without bone cutting after extraction of upper first premolars in class II type I patients.
Patients at the Orthodontic Department of University of Damascus Dental School will be examined and subjects who meet the inclusion criteria will be included. Then, initial diagnostic records (diagnostic gypsum models, internal and external oral photographs, as well as radiographic images) will be studied to ensure that the selection criteria are accurately matched. The aim of this study is to compare two groups of patients with moderate crowding of the lower anterior teeth First group (Experimental): the patients in this group will be treated with orthodontic fixed appliances + surgery to the alveolus of the lower anterior teeth in order to induce remodeling of the bony structures and enhance orthodontic movement. Second group (Control): the patients in this group will be treated using fixed appliances with any acceleration method.
The general trend in the orthodontic practice is to become digital in many aspects. Since 1980s, digital photographs have been available and they play a principal role in the orthodontic practice for documentation and diagnosis purposes. Now photographs have an important role in teaching, scientific research and medical examination. Successful orthodontic treatment is based on a comprehensive diagnosis and treatment planning. A few of the fundamental factors in the diagnosis are the spacing condition, tooth size, arch form and dimensions, as well as the tooth-arch discrepancies. Intraoral photographs' major role is to enable orthodontists to document and analyze the occlusal relationships as well as the dental and soft-tissue features in order to arrive at a good diagnosis and an appropriate treatment plan. In 1975, Robert Little developed Little's irregularity index (LII). The index was proposed to assess teeth irregularity, crowding, relapse, and alignment of anterior teeth as it measured the linear displacements in the horizontal plane between contact points of anterior teeth, ignoring vertical displacement, from mesial surface of one canine to the contra-lateral one. The sum of the 5 liner measurements of displacements was the LII score. The higher the index value, the more severe irregularity of the teeth was. LII has been originally developed for mandibular incisors to study relapse; however, researchers have used it to assess upper and lower incisors irregularity Tooth-size-arch-length discrepancy (TSALD) is widely used on study models to assess the level of harmony between tooth size and the supporting basal bone. Bolton analysis is another important measurement used to identify disharmony between maxillary and mandibular tooth size which is considered an important factor to ensure the success of orthodontic treatment. With the application of the suggested formulas, the overall ratio should be 91.3% (±1.91) and the partial (anterior) ratio should be 77.2% (±1.65). The validity and reliability of performing the above mentioned analyses on images taken of the dental arches have not been evaluated yet in the literature. This is the aim of the current project.
Patients at the Orthodontic Department of University of Damascus Dental School will be examined and subjects who meet the inclusion criteria will be admitted then the initial diagnostic records (diagnostic gypsum samples - internal and external oral photographs as well as radiographic images) will be studied to ensure that the selection criteria are accurately matched. The aim of this study is to compare three groups of patients with severe crowding of the upper anterior teeth: - Group 1 : Patients will be treated using self-ligating brackets - Group 2 : Patients will be treated using self-ligating brackets associated with flapless corticotomy. - Group 3 : Patients will be treated using traditional brackets (i.e. brackets positioned on the labial surface of the teeth) At the end of leveling and aligning phase, we will compare the self-ligating brackets and traditional brackets ( the acceleration of teeth movement, dental and alveolar changes and other variables ) Also, there is an intention to study the effectiveness of using flapless corticotomy with the self-ligating brackets.
We will treat patients with class I malocclusion who have moderate crowding (4-6 mm) according to Little's irregularity index and asses the efficacy of low level laser therapy in accelerating orthodontic tooth movement . There is two groups : 1. treated with Low level laser therapy (LLLT) 2. treated traditionally without any irradiation Patients will be randomly allocated in any group and all data will be collected through photographs when leveling and alignment completed. Also pain levels will be assessed using numeric rating scale to compare between the two groups and if laser really can relief pain or not .
Patients who have severe crowding that require four premolars extraction will be treated in this study. The efficacy of the clear aligners and vestibular fixed appliances will be assessed. The treatment result of these two different methods will be explored using the Peer Assessment Rating (PAR) in two different times (T0: Before treatment, T1: After treatment) and the American Board of Orthodontics Objective Grading System (ABO-OGS) after treatment (T1). There are two groups: First group (Experimental): the patients in this group will be treated using clear aligners. Second group (Control): the patients in this group will be treated using fixed appliances.
Patients with class II malocclusion and retrognathic mandibles will be treated using functional appliances and asses the remodeling that is expected to occur in the temporomandibular joint (TMJ) using cone-beam computed tomography (CBCT) images and we will register mandibular movements using electronic axiograph ( a specific apparatus used to record jaw movements in three dimensions). There are three groups : 1. Activator Group 2. Twin block Group 3. Control Group with no treatment. Patients will be allocated to the three groups randomly. Data will be collected using three different approaches: - CBCT images before treatment and 12 months after treatment - Axiograph registrations before treatment and 12 months after treatment
The aim of this study is to find out if one blood group phenotype is more responsive than the others to the nonsurgical periodontal treatment.
Injection in the Suprachoroidal space has potential of increasing the efficacy of the drug upto six times with direct effect on retinal tissues sparing the crystalline lens and trabecular meshwork.