Malocclusion, Angle Class III
Conditions
Keywords
Surgery-First, Orthognathic, Aligner, Aesthetic Treatment
Brief summary
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 Profile), SF-36 (Medical Outcomes Study 36 - Item Short-Form Health Survey) and IOTN (Index of Orthodontic Treatment Need).
Interventions
PROCEDUREOrthognathic Surgery
Type of surgery performed to correct skeletal malocclusions
Sponsors
Rio de Janeiro State University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)
Eligibility
Sex/Gender
ALL
Age
17 Years to 35 Years
Healthy volunteers
Yes
Inclusion criteria
* Adults; * Skeletal malocclusion; * ANB Angle zero or negative; * Witts negative; * Etiology: mandibular excess, a maxillary deficiency, or a combination of both; * Indication for bimaxillary surgery;
Exclusion criteria
* Previous orthodontic treatment; * Craniofacial anomaly or previous fracture of the facial bones; * Total edentulism; * Deep curve of Spee; * Vertical asymmetry; * Any medication use that contraindicates surgical treatment.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Quality of life accessed by validated questionnaires. | at the end of orthodontic treatment (up to 2 years). | Comparison between quality of life changes in the two groups at the end of treatment. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Treatment duration. | at the end of orthodontic treatment (up to 2 years). | Comparison between treatment time in the two groups at the end of the treatment. |
| Facial changes as measured by tomographic superimposition of the face. | at the end of orthodontic treatment (up to 2 years). | Comparison between facial changes in the two groups at the end of the treatment. |
| Incisors inclination | at the end of orthodontic treatment (up to 2 years). | Quantitative assessment of incisors inclination between the two groups as measured by tomographic superimposition at the end of orthodontic treatment. |
| Periodontal status. | at the end of orthodontic treatment (up to 2 years). | Comparison between periodontal changes in the two groups at the end of the treatment. |
| Swelling as measured by tomographic images. | 12 months post-operative. | Comparison between facial swelling in the two groups after orthognathic surgery. |
| Surgery stability as measured by tomographic superimposition. | 12 months post-operative. | Comparison between surgery stability in the two groups at the end of the treatment. |
| Changes in relationship between maxilla and mandible as measured by tomographic superimposition of the cranial base. | 12 months post-operative. | Comparison between the changes of the relationship among maxilla and mandible in the two groups at the end of the treatment. |
| Alveolar bone changes around incisors. | at the end of orthodontic treatment (up to 2 years). | Comparison between the alveolar bone changes around incisors by tomographic. |
Countries
Brazil
Contacts
Primary ContactArthur Cunha, MSc
Backup ContactJose Augusto M Miguel, PhD
Outcome results
None listed