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Status unknownNCT04997083Updated Aug 9, 2021

Slow Expansion and Protraction in Cleft Lip and Palate Patients

An interventional study of Maxillary Expander with Differential Opening (EDO) and Petit face mask in Cleft Lip and Palate, sponsored by Faculty of Dental Medicine for Girls. Status unknown at 1 site in Egypt. Open to participants aged 8 Years to 12 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-08-09.

Sponsored by Faculty of Dental Medicine for Girls · Not applicable, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Aug 2021), so the status shown — last known as Recruiting — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
10
Allocation
Not applicable
Ages
8 Years to 12 Years
Sex
All
01

Study summary

Evaluate the treatment outcome of slow maxillary expansion protocol on patients with cleft lip and palate, using a differential opening expander and face mask which will be measured and recorded by cone beam computed tomography (CBCT).

Read the detailed description

Cleft lip and palate are among the most common deformities in children. Cleft patients are usually having orofacial problems as missing or unerupted permanent teeth, alveolar bone defect, speech difficulty. Patients with cleft lip and palate (CLP) commonly have maxillary arch constriction (maxillary hypoplasia) and Class III malocclusions due to deficient of maxillary growth. The upper jaw of patients with cleft palate will be expanded using maxillary Expander with Differential Opening (EDO) which has two screws; one anterior and one posterior. This will be done with slow expansion protocol, which is one 1/4 turn three times weekly. Petit facemask will be used to protract the retracted maxilla. The differences in measurements between before and after treatment will be assessed by cone beam computed tomography (CBCT).

02

Conditions studied

  • Cleft Lip and Palate

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Keywords

  • Cleft lip and palate
  • Expansion
  • Slow expansion
  • Maxillary expander with differential opening (EDO)
  • Protraction
  • Face mask
  • Cone beam computed tomography (CBCT)
03

In context

Cleft Lip

162 studies on the registry are indexed under Cleft Lip; 51 are open to participants now.

This study's planned enrollment of 10 is below the median of 30 across 114 interventional studies indexed under Cleft Lip.

Browse Cleft Lip studies →

Lead sponsor

Faculty of Dental Medicine for Girls is the lead sponsor of 52 studies on the registry; 4 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
8 Years to 12 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • All patient age ranges from 8 to 12 years.
  • Patients of both sexes.
  • Cleft lip and palate patients.
  • All the cases showed maxillary arch constriction and deficiency.
  • All patients had maxillary permanent first molars.
  • Primary lip adhesion and palatal closure.

Exclusion criteria

Exclusion Criteria:

  • Patients had received any surgical assisted rapid maxillary expansion or maxillary protraction of fixed orthodontics before.
  • Maxillary dentition unsuitable to bond the expander (less than two dental units beside permanent first molar).
  • Absent maxillary permanent first molars.
  • Uncooperative patients/parents.
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
10 participants (estimated)

Study arms

  • Experimental
    cleft lip and palate patients

    Cleft patients with transverse maxillary constriction and anteroposterior deficiency

    Device: Maxillary Expander with Differential Opening (EDO) · Device: Petit face mask

Interventions

  • DeviceMaxillary Expander with Differential Opening (EDO)

    The EDO is designed with two expansion screws positioned transversely. When more expansion is required between the canines, the anterior screw can be further activated. Both expansion screws can be activated to open in a parallel configuration. Pivoting corner screws allow for different amounts of expansion without significant risk of binding during activation.

  • DevicePetit face mask

    The face mask is anatomical, multi-adjustable, lightweight and an ideal therapeutic alternative for the correction of Class III malocclusion. It consists of forehead cap, chin cap, and cross bar.

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What researchers measure

Primary outcomes

  1. Changes in 3 dimensions of skull before and after expansion

    Full skull Cone Beam Computerized Tomography

    Time frame: Six months

07

Study locations

1 of 1 sites recruiting
  • Faculty of dental medicine for girls, Al-Azhar University
    Cairo, Nasr City 0000, Egypt
    Recruiting
08

References and documents

Publications

  • Alves ACM, Janson G, Mcnamara JA Jr, Lauris JRP, Garib DG. Maxillary expander with differential opening vs Hyrax expander: A randomized clinical trial. Am J Orthod Dentofacial Orthop. 2020 Jan;157(1):7-18. doi: 10.1016/j.ajodo.2019.07.010. PubMed 31901284 ↗
  • Massaro C, Garib D, Cevidanes L, Janson G, Yatabe M, Lauris JRP, Ruellas AC. Maxillary dentoskeletal outcomes of the expander with differential opening and the fan-type expander: a randomized controlled trial. Clin Oral Investig. 2021 Sep;25(9):5247-5256. doi: 10.1007/s00784-021-03832-9. Epub 2021 Feb 12. PubMed 33580351 ↗

Individual participant data

Plan to share: No — Evaluation of EDO, Slow maxillary expansion and facemask in patients with cleft lip and palate (CLP) using Cone Beam Computed Tomography (CBCT)

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 9, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04997083
Lead sponsor
Faculty of Dental Medicine for Girls
Responsible party
Amira Helmy Abdulsattar Eldawy (Principal Investigator, Faculty of Dental Medicine for Girls) — Principal investigator
First posted
Aug 9, 2021
Start date
Jul 15, 2021
Primary completion
Jul 2022 (estimated)
Completion
Jul 2023 (estimated)
Last update
Aug 9, 2021

Study contacts

Amira H. Eldawy, Master
Contact
amiraeldawy.p5821@azhar.edu.eg
+201112788674
Taghreed R. Alazzawi, Master
Contact
TaghreedAlazzawi.p5821@azhar.edu.eg
+201001581382
Amany M. Diab, PhD
study director · Lecturer of Orthodontics Department, Faculty of Dental Medicine for Girls, Al-Azhar University

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Aug 2021. You cannot join it, but the record below documents what was studied.

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