Active clinical trials for "Malocclusion, Angle Class II"

Importance and justification The importance of carrying out this study is to verify the electrical activity generated by the masticatory muscles to be able to have clarity of their performance in the development of orthopedic treatment, thus complementing the diagnosis to achieve a more successful treatment with myofunctional device SN1 in Class II malocclusions. In addition, with the results of this study, treatment prediction criteria are provided to the clinician, depending on the thickness of the muscle, more specific equipment will be chosen to solve the malocclusion and prognosis when using the SN1 myofunctional device in class II malocclusions. Additionally, it has academic utility, since there is little scientific evidence about myofunctional SN1 device and its impact on masticatory muscles, thus opening the door to a line of research where this study can be used as a basis for future orthopedic clinical research. in UNICIEO. Added to this and according to the results, the knowledge about the SN1 will be updated, thus providing evidence for the teaching of orthopedics for the students; and also a measurement protocol with electromyography for children will be provided Overall objective To evaluate the electrical activity of the masseter and temporal muscles in patients from 7 to 12 years of age, with skeletal class II who are under treatment with myofunctional apparatus (Sn1), in the UNICIEO orthopedics clinic by means of kinesiological electromyography compare with a control group without use of the device Specific objectives Determine the activity of the masseter and temporal muscles of patients at rest (without functional orthopedic apparatus) in the two study groups. To determine the activity of the masseter and temporal muscles of the patients after the use of functional orthopedic equipment (Sn1), after six months of treatment and in the control group without treatment.

For improving the appearance of protruded upper front teeth when lower front teeth may touch palatal mucosa or have proximity to that; the innovated Seifi's Functional Appliance may be used.

To compare dentoskeletal changes in patients with skeletal class II malocclusion induced due to treatment with orthodontic appliances; removable twin block appliance and fixed AdvanSync2 appliance in two different age group patients.

What is the effect of the different treatment modalities (distalization versus upper premolar extraction) of class II malocclusion on the position, inclination and incidence of impaction of the upper third molars?

The purpose of this study is to provide evidence on the effectiveness, the efficiency and efficacy of Peizo-Corticission in accelerating orthodontic tooth movement and reducing orthodontic treatment time.

The present day social setup considers facial charisma as an important physical characteristic. The facial characteristics of an individual are measured through anthropometry, photogrammetry, computer imaging and cephalometric radiographs. Cephalometric radiographs offer significant diagnostic information regarding the association between the dental and skeletal structures. By means of photogrammetric measurements, a fresh diagnostic resource is accessible to the orthodontist which permits an intangible, radiation free attainment of measure points of soft tissue with no instrumental expense and radiation to the patient. Orthodontic patients range from adolescents to senior citizens and originate from an assortment of populations, thus an extensive series of representative norms will be ideal. Knowledge of the normal dentofacial outline of every group will make certain better success of treatment to set up the best possible facial agreement. Hence, it is extremely important to assess the soft tissue profile of a patient as it is one of the most vital components of orthodontic diagnosis and treatment planning. The purpose of the present study is to evaluate the photographic characteristics of soft tissue facial profile of patients with class II malocclusion as ethnic differences have been found to be reported in the literature. It is hypothesized that soft tissue facial characteristics on lateral profile photographs and lateral cephalometric radiographs in a sample of local population with class II malocclusion are closely related.

Together with the increased adult patient demand for orthodontic treatment and the push toward increasingly personalized treatment, technology developments have resulted in a growing worldwide demand for clear aligners, to the point that they are now an essential part of any orthodontic practice. Despite the widespread use of the technique, the existing literature about reliability of orthodontic tooth movement with Invisalign aligners seems not encouraging. Several papers have demonstrated that what is virtually planned is not what is clinically achievable. However, it should be considered that clear aligner orthodontics techniques are customized not only for the patients but for orthodontists too. Therefore, virtual treatment plan design, in terms of attachments' design and placement, orthodontic tooth movement (OTM) staging and aligner deformation overengineering, or in other words aligners biomechanics knowledge, plays a crucial role in defining the quality of the orthodontic treatment with Invisalign aligners. Based on these considerations the present study was designed to answer two research-clinical questions: 1) which are the less predictable orthodontic movements with Invisalign aligners when the treatment plan is designed by expert operators? and 2) which is the impact of the orthodontist experience, in terms of patient motivation, on the predictability of orthodontic tooth movement with Invisalign aligners? To answer those questions, the predictability of OTM in a sample of Invisalign patients treated by expert operators was compared with the predictability of OTM in a sample treated by post-graduate students. The null hypothesis for question 1 is that all the prescribed orthodontic tooth movements are predictable, while the null hypothesis for question 2 is that the reliability of orthodontic tooth movement is not affected by operator experience. 98 patients (31 M, 67 F; mean age 28 ± 12 years) were selected among those in treatment at the Department of Orthodontics of the University of Turin, which is the coordinating center, and at 5 private orthodontics offices across Italy. The inclusion criteria for practitioners were as follows: orthodontist with huge and renewed experience in Invisalign treatments; has the ability to scan plaster model or to collect intraoral scans and upload (via internet) the files obtained to a central repository; affirms that the practice can devote sufficient time in patient scheduling to allow focused recording of all data required for the study; and does not anticipate retiring, selling the practice, or moving during the study. Signed, written informed consent was required before inclusion in the trial. All participants included in this prospective observational study had Class I or mild Class II malocclusion with mild to moderate crowding or spacing in the maxillary and mandibular dental arches (nonextraction cases). Interproximal enamel reduction was performed as prescribed in each patient's virtual treatment plan. The average treatment time was 10 ± 5 months. The sample considered a total of 2716 teeth that were analyzed overlapping the real post-treatment .stl file obtained with the final intra-oral scan to the planned post-treatment .stl file obtained exporting the final stage of the virtual setup. Every virtual treatment plan was designed by orthodontists with a huge and renewed experience in Invisalign treatments. While in the private practices the treatment was directly conducted by 5 expert orthodontist (mean age 45.6 ± 8.2) who controlled the patient at every appointment, in the University setting the treatment was conducted by 5 post-graduate students at the last year of their program (mean age 26.4± 1.4). Control appointments were fixed at 6 weeks interval in both the University and the private settings. Posttreatment digital models and final virtual treatment plan models were exported from ClinCheck® software as stereolithography files and subsequently imported into Geomagic Qualify software (3D Systems(r), Rock Hill, South Carolina, USA), in order to compare individual tooth positions between digital models of each patient. The dental arches were superimposed using the landmark-based method and the surface-based method (Best Fit Alignment). So that the differences between the tooth positions could be calculated, 3 reference planes were identified on the virtual treatment plan model. Differences between the actual treatment outcome and the predicted outcome were calculated and tested for statistical significance for each tooth in the mesial-distal, vestibular-lingual, and occlusal-gingival directions, as well as for angulation, inclination, and rotation. Differences greater than 0.5 mm for linear measurements and 2° for angular measurements were considered clinically significant. In addition, the statistical significance of categorical variables was tested for each previously calculated difference in tooth movement.

the study is searching if there is a relationship between the blood groups and RH and the skeletal malocclusion using the skeletal class I as a control group