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Recruiting NCT07739498

Posterior Resin Bite Turbos Effect on Maxillary Expansion Using a HYRAX Expander in Early Adolescents

No phase Interventional Maxillary Transverse Deficiency Requiring Rapid Maxillary Expansion in Early Adolescent Patients

For patients and families

In plain language

An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.

What is being studied
The protocol lists: Intervention 1: HYRAX expander with posterior disarticulatory resin bite turbos, Intervention 2 (Control): HYRAX expander alone.
Who it may be relevant to
Registry conditions: Maxillary Transverse Deficiency Requiring Rapid Maxillary Expansion in Early Adolescent Patients. Basic parameters: 10 years — 14 years · All.
What needs checking
Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
Where it takes place
Egypt
Next step
Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →

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Official title

Effect of Posterior Disarticulatory Resin Bite Turbos on the Rate of Maxillary Expansion Using HYRAX Expander in Early Adolescent Patients: Randomized Controlled Clinical Trial

Overview

This randomized controlled clinical trial aims to evaluate the effect of posterior disarticulatory resin bite turbos on the rate of maxillary expansion using a HYRAX expander in early adolescent patients. Participants will be randomly assigned to receive either maxillary expansion with posterior resin bite turbos or conventional expansion without bite turbos. The study will assess and compare the rate and effectiveness of maxillary expansion between the two groups during the treatment period. Clinical measurements will be recorded to evaluate skeletal and dental changes associated with the intervention.

Detailed description

This study is conducted as part of a Master's thesis in Orthodontics and aims to investigate the influence of posterior disarticulatory resin bite turbos on the rate of maxillary expansion achieved using a HYRAX expander in early adolescent patients.

The study evaluates whether modifying occlusal contacts can affect skeletal and dental responses during rapid maxillary expansion.

Participants will be monitored clinically throughout the expansion phase.

Participants will be assigned in two groups:

group 1: with posterior bite turbos group 2: without posterior bite turbos

Digital intraoral scans will be taken on a weekly basis to assess changes in maxillary dimensions and to accurately measure the rate and pattern of expansion over time.

These serial digital records provide high-resolution, non-invasive documentation of treatment progress.

CBCT will be taken before the expansion and after retention phase for skeletal and dental measurement .

Interventions

  • Device Intervention 1: HYRAX expander with posterior disarticulatory resin bite turbos
    Description: Arm 1: Participants in this group receive a HYRAX rapid maxillary expansion appliance combined with posterior disarticulatory resin bite turbos. The bite turbos are placed on the posterior teeth to disclude the occlusion, aiming to reduce occlusal interference and potentially enhance skeletal response during maxillary expansion. The HYRAX appliance is activated according to a standardized expansion protocol.
  • Device Intervention 2 (Control): HYRAX expander alone
    Participants in this group receive a HYRAX rapid maxillary expansion appliance alone without the use of posterior bite turbos. The appliance is activated following the same standardized expansion protocol as the intervention group.

Primary outcome measures

  • The effect of occlusal disarticulation on the rate of maxillary expansion by linear measurements made on digital models [Time frame: Baseline and weekly during the active phase of expansion and after 3 months of retention]
Secondary outcome measures (2)
  • -The effect of the posterior disarticulation on alveolar bone changes by CBCT . [Time frame: baseline and after three months of retention after complete active expansion]
  • pain felt by the patient after activating the expansion screw [Time frame: first two weeks in active phase of expansion]

Eligibility criteria

Inclusion criteria

  • Patients aged 10-14 years.
  • Bilateral posterior cross bite.
  • Functional lateral cross bite.
  • Good general and oral health.
  • Normal to decreased vertical height )average FMA 29.7 °± 4.2 °).23

Exclusion criteria

  • Patients with cleft lip and palate.
  • Severe facial asymmetry.
  • Anterior open bite.
  • Systemic conditions affecting tooth movement (e.g., diabetes, bone disorders).
  • Previous orthodontic treatment.

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Allocation
Randomized
Model
Parallel assignment
Masking
Double blind
Primary purpose
Treatment

Study locations

Egypt · 1 center
  • Orthodontic Department - Faculty of Dentistry Mansoura University — Al Mansurah

Identifiers

NCT: NCT07739498 · MS.26.02.145

Primary sources (government registries)

View this study on ClinicalTrials.gov ↗