Long-term stability after Class II treatment with the Herbst appliance after the end of growth

Long-term stability after Class II treatment with the Herbst appliance after the end of growth - Long-term stability Herbst-MBA treatment (adults)

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00023022

Enrollment

Registered

2020-09-14

Start date

2020-09-14

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

Class II malocclusion (long-term stability after treatment) K07

Interventions

Group 1: (after) Herbst-Multibracket treatment: taking impressions to obtain study casts, inspection of oral cavity, screening of temporomandibular joint and lower jaw mobility, taking intra- and extr

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Orthodontic Herbst appliance treatment as well as subsequent multibracket appliance treatment after the growth period, treatment completed at least 15 years ago

Exclusion criteria

Exclusion criteria: Failure of inclusion criteria, incomplete treatment records

Design outcomes

Primary

Measure	Time frame
Overjet increase during the post-treatment period; changes >1,5mm are to be considered as clinically relevant (measurements performed on orthodontic study casts)	—

Secondary

Measure	Time frame
Increase of overbite as well as sagittal molar and canine relationship (assessment performed on orthodontic study casts) Facial profile changes (assessment using extraoral photographs) Overall orthodontic diagnosis (PAR-Index) using orthodontic study casts General oral health and temporomandibular joint function as well as current orthodontic treatment need by means of clinical inspection and examination Oral health related quality of life using a questionnaire (OHIP-G14)	—

Measure

Time frame

Increase of overbite as well as sagittal molar and canine relationship (assessment performed on orthodontic study casts) Facial profile changes (assessment using extraoral photographs) Overall orthodontic diagnosis (PAR-Index) using orthodontic study casts General oral health and temporomandibular joint function as well as current orthodontic treatment need by means of clinical inspection and examination Oral health related quality of life using a questionnaire (OHIP-G14)

—

Countries

Germany

Contacts

Public ContactNiko Christian Bock

Justus-Liebig-Universität Giessen Poliklinik für Kieferorthopädie

niko.c.bock@dentist.med.uni-giessen.de0641-9946123

Outcome results

None listed

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