Class II malocclusion
Conditions
Interventions
Experimental group :rapid molar distalization
Control group:sequential molar distalization
Sponsors
Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine
Eligibility
Sex/Gender
All
Age
18 Years to 35 Years
Inclusion criteria
Inclusion criteria: 1) Age:18-35 years old 2) Permanent dentition 3) Class II molar relationship 4) the distance of molardistalization: 2mm-4mm 5) ANB angle between 2 and 7° 6) MP-FH angle between 32-37° 7) Patients who can understand and cooperate in completing treatment, voluntarily sign an informed consent form.
Exclusion criteria
Exclusion criteria: 1) Patients who required functional appliance therapy 2) Patients with moderate to severe periodontal disease 3) Patients with temporomandibular joint disease 4) Craniofacial syndromes or cleft lip and palate 5) Excluding diseases that seriously affect bone metabolism
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The ratio of the actual space to the designed space ; | — |
Secondary
| Measure | Time frame |
|---|---|
| proclination of upper incisors relative to anterior cranial base plane;the duration of molar distalization; | — |
Countries
China
Contacts
Public ContactChu Fengting
Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine
Outcome results
None listed