The influence of an initial lip dysfunction on the skeletal class II correction

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00021090

Enrollment

Registered

2020-03-12

Start date

2020-10-01

Completion date

Unknown

Last updated

2025-04-07

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

Conditions

K07.1 K07.5

Interventions

Group 1: Test group: Angle class II division 1 patients with initial lip dysfunction. N participants = 12. Age = 10-12 years. The aim of the orthodontic treatment with a functional orthodontic appl

Eligibility

Sex/Gender

All

Age

10 Years to 12 Years

Inclusion criteria

Inclusion criteria: - Late mixed dentition (age: 10-12 years) - Patients with a dental need for treatment as defined by the Federal Committee of Dentists and Health Insurance Funds (published in the Federal Gazette No. 226 (p. 24 966) of December 3, 2003). - Clinical overjet > 6mm and Angle class II > ½ premolar width in the molar region (KIG classification D4 or D5) - ANB > 4° - Skeletal age S2-S3 according to the cervical vertebral maturation method by Baccetti et al. [2005]. - No presence of systemic diseases - Adults: presence of a written declaration of consent - Minors: Presence of a written declaration of consent

Exclusion criteria

Exclusion criteria: - Extraction of teeth during functional orthodontic therapy - Additional orthodontic therapy - Craniofacial abnormalities - Rheumatoid diseases - Medication with substances influencing bone metabolism - No written consent to participate in the study - Patients who are not willing to keep all appointments

Design outcomes

Primary

Measure	Time frame
The main target criterion is to determine the influence of an initial lip dysfunction on the skeletal advancement of the mandible. After achieving the desired advancement with a stable Angle Class I occlusion in the molar region and a physiological overjet of approx. 2mm, the treatment is stated as successfully completed. The initially prepared documents (models, cephalometric radiograph, orthopantomogram, extra- and intraoral photos) are prepared and evaluated again.	—

Measure

Time frame

The main target criterion is to determine the influence of an initial lip dysfunction on the skeletal advancement of the mandible. After achieving the desired advancement with a stable Angle Class I occlusion in the molar region and a physiological overjet of approx. 2mm, the treatment is stated as successfully completed. The initially prepared documents (models, cephalometric radiograph, orthopantomogram, extra- and intraoral photos) are prepared and evaluated again.

—

Secondary

Measure	Time frame
The secondary target criterion is to record the time (in months) in which a stable Angle Class I occlusion is achieved in the molar region. The endpoint ist the same as for the primary Outcome.	—

Countries

Germany

Contacts

Public ContactHeike Korbmacher-Steiner

Philipps-Universität Marburg, FB MedizinMZ für ZMKAbt. für Kieferorthopädie

korbmacher@staff.uni-marburg.de+49 6421 5863220

Outcome results

None listed

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