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

NCT ID: NCT03308175

Last Updated: 2018-02-06

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

30 participants

Study Classification

INTERVENTIONAL

Study Start Date

2017-11-30

Study Completion Date

2018-09-30

Brief Summary

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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

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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.

Conditions

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Skeletal Class 2

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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flat fixed anterior bite plane

Bands selection will be done for upper 6s. Alginate impressions taken and molar bands are fitted in place into the impressions. Impressions for upper and lower arches are poured with stone plaster. Mounting on simple hinge articulator will be done.

Lingual arches (diameter 1 mm) with anterior acrylic bite plates with thickness enough to separate posterior teeth 4mm .

The acrylic bite planes were in occlusion with the lower anterior teeth and extended sagittally 2-3mm beyond edges of lower incisors.

Finishing ,polishing and cementation into patient's mouth with glass ionomer cement.

Group Type EXPERIMENTAL

flat fixed anterior bite plane

Intervention Type DEVICE

It causes unlocking mandible from deep bite in growing females

modified inclined fixed anterior bite plane

In modified inclined fixed anterior bite plane,the modification is that some indentations will be done in the acrylic part where the lower anteriors will fit such that mandible will be held in a more forward position. These indentations will be relieved lingually to overcome it's flaring effect on mandibular incisors .The inclined plane will be 60 degrees to occlusal plane.

Functional bite will be taken to position the mandible in the proper position forward.

Bite taken edge-to-edge for appliance construction. Mounting upper and lower casts on simple hinge articulator for construction of modified flat fixed anterior bite plane

Group Type EXPERIMENTAL

modified inclined fixed anterior bite plane

Intervention Type DEVICE

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

Interventions

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flat fixed anterior bite plane

It causes unlocking mandible from deep bite in growing females

Intervention Type DEVICE

modified inclined fixed anterior bite plane

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

Intervention Type DEVICE

Eligibility Criteria

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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

\-
Minimum Eligible Age

10 Years

Maximum Eligible Age

13 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes

Sponsors

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Cairo University

OTHER

Sponsor Role lead

Responsible Party

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Yomna Elfiky

Resident

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Faculty of Dentistry,Cairo University

Cairo, , Egypt

Site Status RECRUITING

Countries

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Egypt

Central Contacts

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yomna Elfiky, resident

Role: CONTACT

01001987078

Other Identifiers

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CEBD-CU-2017-10-04

Identifier Type: -

Identifier Source: org_study_id

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