Malocclusion
Conditions
Interventions
Class II division 2:Class II division 2 Malocclusion
Class ?:Class ? Malocclusion
Sponsors
Stomatological Hospital, China Medical University
Eligibility
Sex/Gender
All
Age
11 Years to 17 Years
Inclusion criteria
Inclusion criteria: Class I: 1) When it was in centric occlusion position, the bilateral molars and canines were in neutral occlusion; 2) The upper and lower jaw teeth are well arranged; 3) The overbite and overjet were 2-4mm; 4) AND 0.7 degree to 4.7 degree. Class II Class 2: 1) When it was in centric occlusion position, the bilateral molars and canines were in distal occlusion and the first molars have distal volume of at least 1/2 cusp; 2) The maxillary incisors are inclined, overjet less than 2mm; 3) ANB>4.7 degree.
Exclusion criteria
Exclusion criteria: 1) The storage model was not well preserved, and the cusps were worn and damaged; 2) CBCT shooting was not clear; 3) Suffering from skeletal malformations such as mandibular deviation and congenital craniofacial malformations such as cleft lip and palate or systemic diseases.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| dental width;Alveolar width;Airway measurement index; | — |
Countries
China
Contacts
Public ContactFeng Cuijuan
Stomatological Hospital, China Medical University
Outcome results
None listed