View clinical trials related to Malocclusion.
Filter by:This study will aim to evaluate the dental and skeletal effect of the Transpalatal arch and Nance holding arch as a space maintainers in children.
evaluate and compare the efficiency between elastomeric chains and burston T-loop retractors in terms of rate of maxillary canine retraction and canine movements
The objective is to compare the dento-alveolar therapeutic effects of wearing class II inter-arch traction elastics on aligners versus multi-brackets in an adult population. The principal hypothesis is no significant difference in therapeutic effects of using inter-arch elastics on aligners versus multi-brackets.
The objective of this study is to evaluate the effect of bone-anchored rapid maxillary expansion (RME) in the volume of the right maxillary sinus, left maxillary sinus and nasal and maxillary sinus airway complex, through bone anchored maxillary expansion devices (BAME); in addition, the influence of gender and age in the volume changes will be also analyzed. Material and method: 18 patients between undergone RME treatment with a jackscrew based on 4 miniscrews which will be placed in the palate on both sides of the midpalatal suture. Cone-beam computed tomography (CBCT) scans will be taken before and after suture palatine expansion and datasets will be uploaded into therapeutic digital planning software to measure the volume (mm3) of the right maxillary sinus, left maxillary sinus (mm3) and nasal and maxillary sinus airway complex (mm3). The airway volumes will be isolated after selecting the anatomical area in the axial, coronal and sagittal space plane and ensuring the air density measurement by reference points placement inside the selected area. Statistical analysis between preoperative and postoperative measurements will be performed using the statistical analysis of the t-test.
The purpose of this prospective study is to compare treatment outcomes and the quality of life of skeletal Class III patients treated with conventional fixed appliances and aligners undergoing Surgery-first approach. Data will be collected through validated questionnaires: OQLQ (Orthognathic Quality of Life Questionnaire), OHIP-14 (Oral Health Impact Proļ¬le), SF-36 (Medical Outcomes Study 36 - Item Short-Form Health Survey) and IOTN (Index of Orthodontic Treatment Need).
It is very important to decrease the bleeding during bimaxillary osteotomy in order to increase the visibility of the surgical site. Our primary goal is to investigate the predictive value of pre- and perioperative factors, including controlled hypotension, on visibility of surgical site during bimaxillary osteotomy.
The aim of the present study is to investigate the baseline upper airways dimensions in adult patients belonging to all skeletal classes
This study hypotheses that using low medial cut osteotomy BSSO in mandibular setback can be an efficient and effective method to limit the bony segment interferences , decreasing muscles stripping during osteotomy ,decrease condylar torque and so securing preoperative condylar position during BSSO in comparison with using high medial cut BSSO.
The orthodontist uses plaster models to collect information. This includes identification deviations, classification of malocclusion, formulation of treatment goals for specific patient. Models are used to examine the morphology of individual teeth and also to visualize the placement of teeth in individual dental arches. Study models It therefore appears to be one of the most important records for treatment planning. In USA, orthodontist can start practicing orthodontics which requires a lot of difficulty 300 new cases in a year and therefore may require an entire room to store plaster models. The minimum file retention period depends on the appropriate platform for the statute of limitations during which legal action for fault can be brought. in the USA, this time period varies from 5 to 15 years, varies from country to country. This platform can be started on the last day of treatment, or it can be postponed until the patient reaches adulthood. Regardless of how it is viewed, long term storage is required. Over ten years, if 300 new cases are initiated each year, that will represent 6,000 combinations of prototyping, pre-processing and post-processing. Additional storage space may be required, maybe somewhere else, with financial implications. With the recent introduction of digital models and CBCT images, the orthodontist now has an alternative to traditional plaster study models. Digital technology makes it possible to analyze a computer using software capable of rotating, examining and measuring digital images of the model and dental arches from different points of view. The intraoral scanner is a hand-held device that creates digital impressions of the oral fossa and displays it in 3D on a computer screen after being processed by the scanning program for each device. By 1985 the first intraoral scanner was available for commercial use, and over time it had evolved to become smaller, faster, and more accurate. Intraoral scanners provide easier treatment planning, better workflow, greater patient acceptance and shorter working time, but more studies are needed to investigate their accuracy and compare with traditional methods. The measurements of the tooth widths are one of the important elements in orthodontic diagnosis because of its role in calculating the partial and total Bolton ratio, the Ton relationship, and space analysis. Therefore, the aim of this study will be to assess the accuracy and reliability of measuring teeth widths and Bolton ratios based on three mains well -known methods (plaster models, CBCT images and intraoral images) to ensure the safety of orthodontic diagnostic outputs.
Patient with class ii division 1 malocclusion who have mild increased overjet will be treated in this study. The efficacy of clear aligners in the treatment of Class II division 1 Malocclusion Using Intermaxillary Elastics will be assessed. The skeletal, dental and soft tissues changes resulted by this intervention will be studied and compared with the results of Traditional treatment with fixed appliances. There are two group: 1. a group of patients in which participants will be undergo to the clear aligners with class ii elastics. 2. a group of patients in which participants will be undergo to the traditional fixed appliances with class ii elastics.