Skeletal Class 2NCT03308175
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 study testing flat fixed anterior bite plane and modified inclined fixed anterior bite plane in people with Skeletal Class 2, run by Cairo University at 1 site in Egypt.
Trial 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… Read more about this study
- Who is it for?
- Ages 10 to 13 years, women onlyHealthy volunteers can take part
- Conditions the study is for
- Skeletal Class 2
- What is being tested?
- flat fixed anterior bite plane and modified inclined fixed anterior bite plane
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 30 participants
- Where
- 1 siteEgypt
- Study dates
- 30 Nov 2017to Sep 2018
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 10 to 13 years
- Women only
- Healthy volunteers accepted
- Child
Who may be able to join
- (1)Growing females aged 10-13 (2)Skeletal maturational stage: stages 3,4 of the cervical maturational index CVMI.
- 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
- -
Who cannot join
None listed.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: 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
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.
Read the 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.
- Conditions
- Skeletal Class 2
- Being tested
- flat fixed anterior bite plane, modified inclined fixed anterior bite plane
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
flat fixed anterior bite planeDevice
It causes unlocking mandible from deep bite in growing females
modified inclined fixed anterior bite planeDevice
It causes unlocking mandible from deep bite in growing females plus putting the mandible in a more forward position
| Study group | Role | What they receive |
|---|---|---|
| flat fixed anterior bite plane | Experimental | 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. Receives: Device: flat fixed anterior bite plane |
| modified inclined fixed anterior bite plane | Experimental | 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 Receives: Device: modified inclined fixed anterior bite plane |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in mandibular position
assessed onCBCT
Measured: 8 months
Secondary outcomes (2)
Maxillary anteroposterior and vertical growth change.
assessed onCBCT
Measured: 8 months
Anteroposterior and vertical dental changes.
assessed onCBCT
Measured: 8 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Oct 2017
- Study start30 Nov 2017
- Primary completionSep 2018 (estimated)
- Study completionSep 2018 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Skeletal Class 2Studies of the same condition, open and under way.
- More trials run by Cairo UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Outcomes assessor
- Enrolment
- 30 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Cairo University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Yomna Elfiky, Cairo University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03308175
- Sponsor's protocol ID
- CEBD-CU-2017-10-04
- Status last verified
- Oct 2017
- First submitted
- 7 Oct 2017
- Last updated
- 6 Feb 2018
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 6 Feb 2018. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- 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
- ClinicalTrials.gov ID
- NCT03308175
- Acronym / sponsor ID
- CEBD-CU-2017-10-04
- Conditions
- Skeletal Class 2
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 30 participants (estimated)
- Lead sponsor
- Cairo UniversityUniversity, hospital or other
- Study start
- 30 Nov 2017 (actual)
- Primary completion
- Sep 2018 (estimated)
- Study completion
- Sep 2018 (estimated)
- First posted
- 12 Oct 2017 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| flat fixed anterior bite plane | Experimental | Device: flat fixed anterior bite planeBands 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. |
| modified inclined fixed anterior bite plane | Experimental | Device: modified inclined fixed anterior bite planeIn 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 |
Who may qualify
- Ages
- 10 to 13 years
- Sex
- Female only
- Healthy volunteers
- Accepted
- Age groups
- Child
Key inclusion criteria (5 listed)
- (1)Growing females aged 10-13 (2)Skeletal maturational stage: stages 3,4 of the cervical maturational index CVMI.
- (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
- -
Key exclusion criteria (0 listed)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| flat fixed anterior bite planeIt causes unlocking mandible from deep bite in growing females | Device | flat fixed anterior bite plane |
| modified inclined fixed anterior bite planeIt causes unlocking mandible from deep bite in growing females plus putting the mandible in a more forward position | Device | modified inclined fixed anterior bite plane |
Primary outcome
Change in mandibular position
Time frame: 8 months
assessed onCBCT
2 secondary outcomes
Maxillary anteroposterior and vertical growth change.
Time frame: 8 months
Anteroposterior and vertical dental changes.
Time frame: 8 months
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 6 Feb 2018.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing flat fixed anterior bite plane and modified inclined fixed anterior bite plane in people with Skeletal Class 2, run by Cairo University at 1 site in Egypt.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 0 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 6 Feb 2018. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Egypt. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact yomna Elfiky, resident (01001987078, princessyomna7@outlook.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Change in mandibular position (time frame: 8 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Feb 2018; AzTrials last refreshed its copy on 7 Nov 2026.