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Study for determining whether the difference of cr-mi joint position can lead to the change of mandible position after orthodontic operation

Study for determining whether the difference of cr-mi joint position can lead to the change of mandible position after orthodontic operation

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2000033752
Enrollment
Unknown
Registered
2020-06-11
Start date
2020-07-01
Completion date
Unknown
Last updated
2020-06-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Malocclusion

Interventions

Case series:Nil

Sponsors

Stomatological Hospital of Air Force Military Medical University
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. From July 2020 to April 2021, the orthodontics Department of Stomatology Hospital of Air Force Military Medical University treated patients with malocclusion; 2. Aged 12-35 years, permanent dentition; 3. Patients with fixed bimaxillary correction; 4. Patients wearing transparent film holder; 5. More than 22 hours a day; 6. Healthy body, normal growth and development; 7. Patients and their families have informed consent and good compliance.

Exclusion criteria

Exclusion criteria: 1. Patients who do not wear retainers as required; 2. Patients after orthodontics who need anterior or posterior teeth restoration; 3. Patients with joint symptoms; 4. Patients who had over expansion of arch and guided mandible forward; 5. Patients with bone malocclusion; 6. Other conditions that the researchers think are not suitable for enrollment.

Design outcomes

Primary

MeasureTime frame
the discrepancy of CR-MI;—

Countries

China

Contacts

Public ContactZhao Hejian

Stomatological Hospital of Air Force Military Medical University

zhaohj12@qq.com+86 17694873279

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026