NCT05586997

Brief Summary

The posterior crossbite is a common type of malocclusion that might affect the normal growth pattern. Early treatment is recommended by rapid maxillary expansion with different appliances. This line of treatment needs a sufficient retention period to decrease the rate of relapse. The low level laser therapy has been used to enhance tissue regeneration. This study aims to compare the effect of rapid maxillary expansion with low level laser versus rapid maxillary expansion in children with posterior cross bite malocclusions.

Trial Health

57
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
60

participants targeted

Target at below P25 for phase_3

Timeline
Completed

Started May 2019

Longer than P75 for phase_3

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

May 17, 2019

Completed
3.4 years until next milestone

First Submitted

Initial submission to the registry

October 16, 2022

Completed
3 days until next milestone

First Posted

Study publicly available on registry

October 19, 2022

Completed
3.2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2025

Completed
3 months until next milestone

Study Completion

Last participant's last visit for all outcomes

March 30, 2026

Completed
Last Updated

February 24, 2025

Status Verified

April 1, 2024

Enrollment Period

6.6 years

First QC Date

October 16, 2022

Last Update Submit

February 20, 2025

Conditions

Keywords

bonded-HyraxHyrax-expanderMaxillary constrictionPosterior cross biteRapid maxillary expansion

Outcome Measures

Primary Outcomes (3)

  • Inter-jugale width

    Horizontal distance between right and left Jugale points, in millimeters.

    six months of retention

  • Buccal maxillary width

    Horizontal distance between the most lateral point on the right and left buccal alveolar plate at the level of the root trifurcation, in millimeters.

    six months of retention

  • Bone density of the mid-palatal suture

    Average density of 200mm3 volume, in hounsfield units.

    six months of retention

Secondary Outcomes (21)

  • Facial width

    six months of retention

  • Inter-infraorbitale width

    six months of retention

  • Inter-lateral pterygoid width

    six months of retention

  • Nasal width

    six months of retention

  • Palatal maxillary width

    six months of retention

  • +16 more secondary outcomes

Study Arms (2)

Bonded Rapid Maxillary Expansion

ACTIVE COMPARATOR

Bonded-hyrax with a 7mm expansion screw activated a full turn twice daily

Device: Bonded-Hyrax

Bonded Rapid Maxillary Expansion and low-Level Laser

EXPERIMENTAL

Bonded-hyrax with a 7mm expansion screw activated a full turn twice daily with 10 sessions of Indium Gallium Arsenide Phosphoride (940nm) semiconductor diode laser

Device: Bonded-HyraxCombination Product: Bonded Rapid Maxillary Expansion and low-Level Laser therapy

Interventions

The expansion screw of the bonded-hyrax will be activated until the palatal cusps of the permanent maxillary first molars are opposing the buccal cusps of the permanent mandibular first molars

Also known as: Rapid maxillary expansion (RME)
Bonded Rapid Maxillary ExpansionBonded Rapid Maxillary Expansion and low-Level Laser

Ten sessions of 0.5 watts for 20 seconds at 4 points along the mid-palatal suture

Also known as: low level laser therapy (LLLT)
Bonded Rapid Maxillary Expansion and low-Level Laser

Eligibility Criteria

Age7 Years - 14 Years
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17)

You may qualify if:

  • Posterior crossbite
  • Patent mid-palatal suture
  • Mixed dentition or early permanent teeth
  • Subjects who reported no medical conditions or prolonged medications

You may not qualify if:

  • Poor oral hygiene
  • Active periodontal disease
  • Craniofacial abnormalities
  • Previous orthodontic treatment
  • Any systemic disease or medication that might affect bone metabolism.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Al-Azhar University

Cairo, Cairo Governorate, 18884, Egypt

RECRUITING

Related Publications (5)

  • Lagravere MO, Major PW, Flores-Mir C. Long-term dental arch changes after rapid maxillary expansion treatment: a systematic review. Angle Orthod. 2005 Mar;75(2):155-61. doi: 10.1043/0003-3219(2005)0752.0.CO;2.

    PMID: 15825776BACKGROUND
  • Skondra FG, Koletsi D, Eliades T, Farmakis ETR. The Effect of Low-Level Laser Therapy on Bone Healing After Rapid Maxillary Expansion: A Systematic Review. Photomed Laser Surg. 2018 Feb;36(2):61-71. doi: 10.1089/pho.2017.4278. Epub 2017 Oct 25.

    PMID: 29072861BACKGROUND
  • Kang Y, Rabie AB, Wong RW. A review of laser applications in orthodontics. Int J Orthod Milwaukee. 2014 Spring;25(1):47-56.

    PMID: 24812743BACKGROUND
  • Baratieri C, Alves M Jr, de Souza MM, de Souza Araujo MT, Maia LC. Does rapid maxillary expansion have long-term effects on airway dimensions and breathing? Am J Orthod Dentofacial Orthop. 2011 Aug;140(2):146-56. doi: 10.1016/j.ajodo.2011.02.019.

    PMID: 21803251BACKGROUND
  • Molen AD. Considerations in the use of cone-beam computed tomography for buccal bone measurements. Am J Orthod Dentofacial Orthop. 2010 Apr;137(4 Suppl):S130-5. doi: 10.1016/j.ajodo.2010.01.015.

    PMID: 20381753BACKGROUND

MeSH Terms

Conditions

Malocclusion

Interventions

Low-Level Light Therapy

Condition Hierarchy (Ancestors)

Tooth DiseasesStomatognathic Diseases

Intervention Hierarchy (Ancestors)

Laser TherapyTherapeuticsPhototherapy

Study Officials

  • Hend S ElSayed, PhD

    National Research Centre, Egypt

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Study Design

Study Type
interventional
Phase
phase 3
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, OUTCOMES ASSESSOR
Masking Details
The patients will be masked by receiving sham LASER therapy in the control group. While, the outcome assessors will evaluate unidentified radiographic images and will have no knowledge of the intervention allocated.
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Associate Professor

Study Record Dates

First Submitted

October 16, 2022

First Posted

October 19, 2022

Study Start

May 17, 2019

Primary Completion

December 31, 2025

Study Completion

March 30, 2026

Last Updated

February 24, 2025

Record last verified: 2024-04

Data Sharing

IPD Sharing
Will not share

Locations