Effect of orthognathic surgery on facial expressions and psychosocial well-being - a 4D preliminary study

Status

Recruiting

Phases

Phase 1

Study type

Interventional

Source

DRKS

Registry ID

DRKS00017206

Enrollment

Registered

2019-11-12

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

Interventions

Group 1: Patients undergo combined orthodontic surgical treatment with orthognathic surgery of one or both jaws. Group 2: Patients with indication for orthodontics only and neutral jaw relation

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: - Need for orthognathic surgery (Index of orthognathic functional treatment need >4) - skeletal class III or skeletal class II - Braces in situ on both investigation time points T0 and T1 - >24 teeth in situ - adult patient (> 18 years old) - ASA class 1 or 2

Exclusion criteria

Exclusion criteria: - cleft lip and/or palate - impaired facial motion - excessive facial hair - positive history of orthognathic surgery - excessive facial asymmetry (menton deviation > 4mm)

Design outcomes

Primary

Measure	Time frame
Oral-health related quality of life is determined using the Orthognathic Quality of Life Questionnaire 1 day preoperative (T0) and 4 months postoperative (T1).	—

Secondary

Measure	Time frame
Secondary outcomes are measured 1 day preoperative (T0) and 4 months postoperative (T1) as follows: a) Maximum smile: magnitude - speed - similarity b) Lip purse: magnitude - speed - similarity c) self-efficacy d) body image	—

Countries

Germany

Contacts

Public ContactAnja Quast

Poliklinik für Kieferorthopädie Universitätsmedizin Göttingen

anja.quast@med.uni-goettingen.de0551399697

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 8, 2026