Angle Class II division 1 malocclusion
Conditions
Interventions
Group 1 :Wear functional aligners all day
Group 2:Wear functional aligners at night only
Sponsors
Nanjing Stomatological Hospital, Medical School of Nanjing University
Eligibility
Sex/Gender
All
Age
10 Years to 13 Years
Inclusion criteria
Inclusion criteria: 1. Distal relationship of the molars; 2. Profile appearance: retraction of mandible, mild protrusion of maxillary or normal, underdevelopment of mandible; 3. Anterior overjet more than 5 mm; 4. ANB > 4.5 degree; 5. No obvious symptoms of temporomandibular joint disease, no obvious facial deviation, no orthodontic treatment history; 6. Age 10-13 years old, mixed dentition or early permanent dentition, CBCT-generated lateral cranial radiographs show that the patient is in CVMS II to CVMS III; 7. Enrollees were asked to sign written informed consent prior to enrollment.
Exclusion criteria
Exclusion criteria: 1. Patients with a history of orthodontic treatment; 2. Those with systemic diseases who cannot cooperate.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| mandibular ramus length;coronoid process length;mandibular body length;mandible length;condyle process width;total upper airway soft tissue volume; | — |
Countries
China
Contacts
Public ContactLei Lang
Nanjing Stomatological Hospital, Medical School of Nanjing University
Outcome results
None listed