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

Not Applicable

• Conditions: K07.1; K07.5; Anomalies of jaw-cranial base relationship; Dentofacial functional abnormalities

• Registration Number: DRKS00021090
• Lead Sponsor: Philipps-Universität Marburg, FB MedizinMZ für ZMKAbt. für Kieferorthopädie

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Study Start: 2020-03-12
• Study Completion: 2023-05-05
• Results First Posted: 2024-01-30
• Last Update Posted: 19 August 2024

Recruitment & Eligibility

• Status: Complete
• Sex: All
• Target Recruitment: 42

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

- 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

Study & Design

• Study Type: interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
The main target criterion is to determine the influence of an initial lip dysfunction on the skeletal advancement of the mandible. <br><br>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 Outcome Measures

Name	Time	Method
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.<br><br>The endpoint ist the same as for the primary Outcome.