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The impacted factor in the change of labiomental angle after orthodontic treatment in Chinese: a retrospective study

The impacted factor in the change of labiomental angle after orthodontic treatment in Chinese: a retrospective study

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2000033189
Enrollment
Unknown
Registered
2020-05-23
Start date
2020-06-01
Completion date
Unknown
Last updated
2020-06-01

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

Conditions

Malocclusion

Interventions

IM Group:N/A
IF Group:N/A

Sponsors

Tianjin Stomatology Hospital
Lead Sponsor

Eligibility

Sex/Gender
All
Age
8 Years to 40 Years

Inclusion criteria

Inclusion criteria: All the cases were from the orthodontic cases treated by two chief doctors of Tianjin stomatological hospital from 2010 to 2020.

Exclusion criteria

Exclusion criteria: 1. Patients whose parents and grandparents are not Chinese; 2. Before and after treatment, patients with obvious changes in body position on cephalometric films; 3. The patients with obvious mental muscle tension can be seen on the lateral cephalogram; 4. Patients who have undergone chin surgery during orthodontic treatment; 5. The patient is open jaw or reverse jaw

Design outcomes

Primary

MeasureTime frame
Cephalometrics;—

Countries

China

Contacts

Public ContactLinkun Zhang

Tianjin Stomatology Hospital

30217082@nankai.edu.cn+86 15900398050

Outcome results

None listed

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