The Use of Statically Determinate Force System in Closure of Anterior Open Bite in Adults.

Dentoalveolar and Skeletal Changes Associated With a Statically Determinate Force System in the Closure of Anterior Open Bite in Adults: A Single-arm Clinical Trial

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT04901221

Enrollment

Registered

2021-05-25

Start date

2019-04-01

Completion date

2021-05-01

Last updated

2022-07-15

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

Conditions

Anterior Openbite

Brief summary

The aim of the current study was to evaluate and quantify the cephalometric changes produced by maxillary and mandibular extrusion arches in closure of anterior open bite in non-growing patients.

Interventions

DEVICEExtrusion arch

one couple force system is applied; a custom-made extrusion wire from 0.016x0.022 stainless steel wire with helical bends placed 2-5 mm mesial to the molar tube placed in the upper and lower arches and tied distal to the lateral incisors

Study design

Allocation

Intervention model

SINGLE_GROUP

Primary purpose

TREATMENT

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

17 Years to 30 Years

Healthy volunteers

Inclusion criteria

* Adult patients with anterior open bites more than 1 mm, permanent dentition except for the third molars which were extracted if erupted

Exclusion criteria

* Frankfort to mandibular plane angle \> 40 * congenital craniofacial malformations or temporomandibular joint disorders, * patients with severe gum show during smiling or increased incisal show at rest.

Design outcomes

Primary

Measure	Time frame	Description
angular and vertical linear effects on incisors	up to 6 months	Extrusion of upper and lower incisors measured from: incisal edge, centroid point and apex to the palatal and mandibular planes for the upper and lower incisors respectively. Angles between long axis of upper incisor to SN plane and palatal plane, Angle between long axis of lower incisor and mandibular plane using lateral cephalometric xray
angular and vertical linear effects on first molars	up to 6 months	For the first molars: Angular measurements between the long axis of the measuring jigs and the palatal plane and mandibular plane for the upper and lower molars, respectively. Vertical measurements: perpendicular vertical distance from the measuring jigs to the palatal and mandibular planes for the upper and lower molars, respectively, using lateral cephalometric xray.

Secondary

Measure	Time frame	Description
change in the SN' to Mandibular plane angle	up to 6 months	measuring the change in the angle between SN' to Mandibular plane angle, using lateral cephalometric xray
change in the palatal to Mandibular plane angle	up to 6 months	measuring the change in the angle between the palatal to Mandibular plane angle, using lateral cephalometric xray
change in the Anterior facial height	up to 6 months	measuring the change in the vertical distance between Nasion and Menton, using lateral cephalometric x-ray.

Countries

Egypt

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026