Active clinical trials for "Malocclusion"

Technological advances have made computer aided orthodontic treatment planning possible. 3D dental scanners and software make it possible to design and approve the outcome before treatment begins. Manufacturers have provided different customized appliance systems that would help practitioners achieve those computer-designed outcomes. The purpose of this study is to determine the accuracy of computer-guided indirect bonding of orthodontic brackets at achieving the predicted alignment and comparing that to the accuracy of conventional orthodontic bracket placement at achieving a predetermined goal. The results of this study will help orthodontists and patients know if there is an advantage to using custom appliances. The study will be a prospective clinical study and will include a total of 60 arches from 30 patients enrolled at the Harvard School of Dental Medicine. 15 patients will be assigned to each of the two study groups (Motion View or control). Both groups will have a 3D intra-oral scan to measure the initial discrepancy and determine the computer-simulated design that the orthodontist believes is the optimized outcome. At the end of each patient's participation, a 3D intraoral scan will be taken and used to assess intra-arch leveling and alignment using ABO's objective grading system's criteria for alignment, marginal ridges and buccolingual inclination. Each arch will then be superimposed on the predicted outcome to determine how accurate each system was at achieving the planned movements in all 3 dimensions. We hypothesize that the accuracy of computer-guided indirect bonding (Motion View) at achieving the predicted outcomes will differ in comparison to the accuracy of conventional orthodontic bracket placement at achieving a predetermined goal.

The purpose of this randomized clinical trial (RCT) is to compare traditional CuNiTi archwires and a recently marketed multiforce version of the same material for the initial alignment and leveling of dental arches, as well as the expression of EARR in adult orthodontic patients.

It is intended to evaluate changes in arch dimensions and incisor inclination as well as changes in the WALA Ridge in no extraction patients treated with interactive self-ligating brackets (Empower®) and passive (Carriere SLX®) at the end of the phase of alignment and leveling. For this, study models and profile radiographs taken before the start of treatment and at the end of the alignment and leveling phase will be evaluated. The parameters to be measured are: intercanine distance, arch depth, upper and lower incisor inclination, and WALA ridge analysis

Incorporating wire threaded custom tunnel attachments with clear aligner therapy is a novel approach developed to address the shortcomings of the currently available orthodontic systems. This hybrid system is anticipated to take advantage of the benefits and overcome many of the limitations of traditional fixed buccal/lingual appliances and clear aligner therapy. The concept utilizes light arch wires to be threaded through computer designed, chairside-fabricated composite tunnel attachments to achieve better control of three-dimensional tooth movements not achievable by clear aligners, such as Invisalign® (Align Technology, Santa Clara, CA) alone. The superelastic feature of the arch wires allows delivery of more continuous forces than aligners alone, potentially permitting shorter duration of recommended aligner wear during orthodontic treatment. A virtual set-up would be used to plan the desired position of the teeth, which in turn will be used to customize the size and position of composite tunnel attachments based on how two round arch wires will pass through tubes within the attachments. The attachments can be placed on either the buccal or lingual surfaces of teeth, depending on clinical preferences and esthetic demands. This is achievable using in-house aligners, which will also allow the fabrication of aligners in the office or at a conventional orthodontic lab at a fraction of the cost of traditional clear aligners.

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.

The trial is aimed to investigate an orthodontic treatment with a new removable-part-time-wearing appliance, based on "High-Tech" technology. The appliance should be wear only 12-14 hours a day, and is made of a single silicone aligner, made specifically for the patient, using 3-D screening technology of the patient's malocclusion. The aligner has a designed pathway "built-in" for the tooth to move, from the original position of the malocclusion to the "end point" - the correct position. The force system, that is needed in order to generate tooth movement, is produced by tiny air-balloons which are incorporated in the aligner. The study hypothesis is, that an orthodontic treatment can be done successfully with this part-time wearing appliance.

Dental occlusion is the reciprocal confrontation of the two dental arches. The child has two set of temporary and permanent teeth and passes through different stages of dentition during which dental, skeletal or functional abnormalities may appear. Dental malocclusion is defined as an incorrect position of the teeth in the bone base, as well as the incoordination of the teeth of the opposite arches or the displacement of the maxillary and mandibular skeletal bases. When a malocclusion is detected during clinical examination, patients are referred to an orthodontic specialist. The interception in orthodontics is carried out during a growing period; it consists of correcting or reducing malocclusions in evolution and eliminating the functional causes to prevent aggravation of skeletal and dental abnormalities. An epidemiological study conducted in France on 789 children showed that 37.4% had at least one type of dental malocclusion. In 2010, a study of 5988 French children showed that 14% of them had received orthodontic treatment. These studies reveal a discrepancy between treatment needs and treatments conducted. In addition, certain dental malocclusions and skeletal disorders, such as lateral and anterior crossbite, require early orthodontic treatment in order to avoid aggravation of the occlusion disorder and induction of craniofacial growth disorders. Unfortunately these discrepancies are not always detected by the caregivers (pediatrician, general dentist, pediatric dentist). A schematic representation of malocclusions in temporary and mixed dentition requiring orthodontic interception has been developed by the investigator's team to provide a simple visual means of identifying these dental and skeletal disorders in order to improve early screening by practitioners involved in the mandatory medical follow-up of children.

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.

The aim of the present project is to analyze the impact from orthognathic surgery on the upper airway respiratory volume. The primary objective is comparison of differences in the in the airway changes due to maxillary movements and mandibular movements. Secondary objectives are the analysis of any correlation between the magnitude of the movement and the airway volume, correlation between the direction of the movements and the changes in airway volume and correlation with Health-Related Quality of Life (HRQoL). Expected confounding factors like smoking habits and Body Mass Index (BMI) will be analyzed.

Research questions: Will the panoramic images derived from cone beam CT data give better diagnostic ability than conventional panoramic radiographs? Will 3D cephalometric analysis offer the orthodontists and surgeons better information for treatment planning? Will the 3D cephalometric analysis give more accurate treatment plan and better treatment outcome? General hypothesis and special aims Overall aims: To compare 2D versus 3D cephalometric analysis: treatment planning and therapeutic outcome. To determine the accuracy and diagnostic ability and usability of the 3D cephalometric analysis. To evaluate the diagnostic ability and usability of the panoramic image derived from cone beam CT data as compared to 2D panoramic images. To evaluate the value of the cone beam CT data in cephalometric analysing process for orthodontic and maxillofacial surgery treatment. Hypotheses: The availability of the 3D cephalometric analysis influences the orthodontic and maxillofacial treatment plan and decision, and might change the treatment outcome. Panoramic images derived from cone beam CT data may provide equal information for diagnosis as conventional panoramic images. Cone beam CT will be able to replace "classic orthodontic imaging" being more time and dose efficient and having a beneficial effect on treatment outcome.