Evaluation of the Effects of Flat and Modified Inclined Fixed Anterior Bite Planes on Mandibular Position in Growing Females With Skeletal Class 2 Malocclusion Due to Mandibular Deficiency and Deep Bite

Evaluation of the Effects of Flat and Modified Inclined Fixed Anterior Bite Planes on Mandibular Position in Growing Females With Skeletal Class 2 Malocclusion Due to Mandibular Deficiency and Deep Bite: A Randomized Controlled Trial

Status

UNKNOWN

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT03308175

Enrollment

Registered

2017-10-12

Start date

2017-11-30

Completion date

2018-09-30

Last updated

2018-02-06

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

Conditions

Skeletal Class 2

Brief summary

This study will be conducted to see if unlocking mandible from deep bite in growing females by flat fixed anterior bite plane will change mandibular position in skeletal mandibular deficiency and if there is a difference in the change of mandibular position if we assisted the mandible by holding it in a more forward position by modified inclined fixed anterior bite plane .These results will be compared to normal mandibular growth from previous records of a matched control group in the discussion afterthat.

Detailed description

Two groups of patients the first for flat fixed anterior bite plane, the second for modified inclined fixed anterior bite plane.Full records are taken to patients. Then bands selection for upper first molars,impressions for upper arch with bands fitted and impression to lower arch, fabrication of either flat/ modified inclined fixed anterior bite planes and cementation in patient's mouth,evaluation of results after 8 months.

Interventions

DEVICEflat fixed anterior bite plane

It causes unlocking mandible from deep bite in growing females

DEVICEmodified inclined fixed anterior bite plane

It causes unlocking mandible from deep bite in growing females plus putting the mandible in a more forward position

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender

FEMALE

Age

10 Years to 13 Years

Healthy volunteers

Yes

Inclusion criteria

* (1)Growing females aged 10-13 (2)Skeletal maturational stage: stages 3,4 of the cervical maturational index CVMI. (3) low-angle/moderate normal growth pattern (4) Overjet of 4-7 mm as measured from labial surface of upper incisors to labial surface of lower incisors (5)Skeletal class 2 due to mandibular deficiency 77 degrees \<SNB\> 73 degrees (6) Normal or slightly protruded maxillary base (7) All cases had dental deep bite; with the upper incisors covering more than 50% of the height of the lower incisors. (8)Only deep bite cases that required extrusion of posterior teeth.

Exclusion criteria

1- No syndromic or medically compromised patients 2- No growth disorders 3- No use of other appliances before or during the period of functional treatment \-

Design outcomes

Primary

Measure	Time frame	Description
Change in mandibular position	8 months	assessed onCBCT

Secondary

Measure	Time frame	Description
Maxillary anteroposterior and vertical growth change.	8 months	assessed onCBCT
Anteroposterior and vertical dental changes.	8 months	assessed onCBCT

Countries

Egypt

Contacts

Primary Contactyomna Elfiky, resident

princessyomna7@outlook.com01001987078

Outcome results

None listed

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