Epidemiological cross-sectional study on the impact of malocclusion and habits on oral health and quality of life

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00006208

Enrollment

818

Registered

2017-02-08

Start date

2017-03-01

Completion date

Unknown

Last updated

2026-03-30

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

Conditions

K02.0 K07.0 K07.1 K07.2 K07.3 K07.4 K07.5 K07.6 K07.8 K05.0 K05.1 K05.2 K05.3 K05.4 K03.0 K03.1 K03.2 K03.6 K03.7 K03.8 K13.1 K13.2 K13.3 K13.4 K13.5 K13.6 K13.7 F99

Interventions

Group 1: 14 clinical-oral inspections and 9 questionnaires concerning state of malocclusion, habits, oral health and quality of life

The participants receive a detailed information sheet, the consent form and the questionnaires and are informed orally and thoroughly about the study by the respective investigator. Participation is v

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: >18 years of age; no syndromes/dentofacial anomalies; no present - orthodontic treatment - orthodontic retention; no present or previous - orthognathic surgery - periodontal surgery; healthy (no serious or chronical ailments or metabolical disorders and regular medication within the previous 3 months)

Exclusion criteria

Exclusion criteria: <18 years of age; syndromes;dentofacial anomalies present - orthodontic treatment - orthodontic retention; present or previous - orthognathic surgery - periodontal surgery; patient not healthy (serious or chronical ailments or metabolical disorders or regular medication within the previous 3 months)

Design outcomes

Primary

Measure	Time frame
14 clinical-oral inspections and 9 questionnaires: a)Do malocclusions and habits, TMD/occlusion impact on quality of life? b)Does oral health impact on quality of life? c)Do correlations exist between malocclusions/habits and oral health/TMD/occlusion?	—

Secondary

Measure	Time frame
14 clinical-oral inspections and 9 questionnaires: a)Do differences in gender and age and background exist regarding the prevalence of malocclusion, habits, TMD/occlusion, oral health and quality of life? b)Do differences exist regarding the sites of recruitment? c)Does subjective oral health status concur with the actual oral health status? d)Do subjective malocclusion/need for orthodontic treatment correlate with actual malocclusion/need for orthodontic treatment?	—

Measure

Time frame

14 clinical-oral inspections and 9 questionnaires: a)Do differences in gender and age and background exist regarding the prevalence of malocclusion, habits, TMD/occlusion, oral health and quality of life? b)Do differences exist regarding the sites of recruitment? c)Does subjective oral health status concur with the actual oral health status? d)Do subjective malocclusion/need for orthodontic treatment correlate with actual malocclusion/need for orthodontic treatment?

—

Countries

Germany

Contacts

Public ContactChristian Kirschneck

Poliklinik für Kieferorthopädie,Universitätsklinikum Regensburg

christian.kirschneck@ukr.de+49 941/944-6093

Outcome results

None listed

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