View clinical trials related to Occlusion.
Filter by:The objective of this study is to assess the occlusal characteristics of Egyptian children 6-12 years old and their need for orthodontic treatment.
The aim of this multicenter randomized clinical trial is to compare the tunneling technique of PICC insertion with the non-tunneled insertion technique in the incidence of the combined or isolated outcome of catheter-related bloodstream primary infection, thrombosis, obstruction, and accidental dislodgement in the adult population within a period of up to 30 days.
The goal of this clinical trial is to learn about different head position's effect on occlusal contacts during digital interocclusal record. The main question aims to answer is: • Are different head positions in physiological limits can be affected the occlusal contact during interocclusal record? Participants will be asked to stand in three different physiological head positions (neutral, forward and backward) which are common in daily routine. In these positions, after maxillary and mandibular arch scans three different interocclusal records will be taken. Also for assessment of these records in digital occlusal analysis module (oJMA, zebras), three different oJMA record will be taken. Researchers will compare neutral, forward and backward head positions to see if there are any difference in number, density and location of occlusal contacts.
The goal of this observational study is to evaluate the impact of a full arch implant-supported prostheses in the lip support. In a complex rehabilitation cases, the process between the diagnosis and the delivery of a prostheses may lead with many clinical and laboratorial choices which influence the final design of the prosthetic work and consequently the facial profile of the patient. The use of 3D facial scanners and advanced superimposition methodology allows the investigators to objectively measure several relevant parameters such as vertical occlusion of dimension and lip support.
22 Patients having lower completely edentulous mandible aged 55-60 years were selected from the outpatient dental clinic of the Medical Excellence Centre of the National Research (NRC) Cairo, Egypt. Six dental implants were inserted in the mandible of each patient. The patients were randomly categorized into two groups according to the final restoration.
A triple function scan Body were done on healed dental implant, thus simplifying the workflow for full arch cases and reducing the number of visits to only 3 visits. In this technique, scan bodies were utilized for implant position scanning, facial scan alignment and as stoppers for jaw relation capturing as scan bodies were used as stoppers for jaw relation registration.
Routine revascularization of asymptomatic carotid stenosis is questionable as optimal medical therapy has significantly reduced the risk of stroke. Therefore, it is crucial to identify high-risk patients who may still benefit from carotid revascularization. In 2017, the ESC guidelines clarified the criteria associated with a high risk of stroke despite optimal treatment to consider a revascularization procedure, including altered cerebral vasoreactivity. However, cerebral vasoreactivity using transcranial Doppler ultrasound is reserved for qualified centers. It requires a technical platform and trained personnel, is time-consuming and generally not readily available. A simpler test is therefore necessary. The goal is to quickly and easily detect patients with normal vasoreactivity who do not benefit from the cerebral vasoreactivity test (reference standard) and to reserve the time-consuming cerebral vasoreactivity test for patients likely to have altered vasoreactivity. The hypothesis of the study is that on a routine measure in transcranial echo-Doppler, the resistance index (RI), can predict the response to the cerebral vasoreactivity test. With this new test, it will be possible to select patients who do not benefit from pharmacological cerebral vasoreactivity testing ("true negatives"). Thus, the time-consuming cerebral vasoreactivity test will be reserved only for patients with a possibility of impaired vasoreactivity.
The aim of this study is to evaluate effects of clear aligners versus fixed appliances on occlusion after treatment of mild anterior crowding a T-scan study.
The aim of the following study was to investigate the existence of a statistically significant correlation between the incisal features (incisal guidance angle, interincisal angle, overbite, overjet), temporomandibular joint (TMJ) morphology and its function. The hypothesis was: I. The protrusive movement of the mandible does correlate with the TMJ anatomy. II. The protrusive movement of the mandible does not correlate with the incisal features. III. The position and relationship of upper and lower permanent incisors do not have a direct and significant effect on the TMJ morphology in young adults.
the aim of this study was to evaluate the accuracy of the various virtual articulator mounting procedures.