Patients with malocclusion who have varying degrees of irregular tooth arrangement and/or protruding teeth, or combined with jaw bone development abnormalities
Conditions
Interventions
Non-extraction orthodontic group without implant anchorage:None
Extraction orthodontic group without implant anchorage:None
Extraction orthodontic group with implant anchorage:None
Non-extraction orthodontic group with implant anchorage:None
Sponsors
Beijing Friendship Hospital ,Capital Medical University
Eligibility
Sex/Gender
All
Age
9 Years to 60 Years
Inclusion criteria
Inclusion criteria: 1.There is no restriction on the age or gender for the initial orthodontic visit; 2.after complete orthodontic treatment, CBCT images were taken both before and after the treatment; 3.the CBCT scanning range covers from the supraorbital margin of the patient to the chin.
Exclusion criteria
Exclusion criteria: 1.Exclude cases whose image blurring caused by motion artifacts, head rotation, and translation makes accurate measurement impossible.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Periodontal ligament area; | — |
Secondary
| Measure | Time frame |
|---|---|
| Root length, alveolar bone height, alveolar bone width, labiolingual displacement of incisal edge or root apex of teeth, tooth inclination angle; | — |
Countries
China
Contacts
Public ContactRuiqi Li
Beijing Friendship Hospital ,Capital Medical University
Outcome results
None listed