3D analysis of palatal shape changes in children treated with a rapid palatal expander

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study aims to evaluate the changes in palatal morphology among growing patients with different vertical facial growth patterns who are treated with a rapid palatal expander. Thirty-six children with posterior cross-bite and mixed dentition will be selected and divided into three groups based on their facial divergency. Digital dental casts will be recorded before and after treatment using an intraoral scanner, and geometric morphometric analysis will be performed to assess the palatal shape changes. The study will provide insights into how different growth patterns affect treatment outcomes.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Caucasian origin;
* Mixed dentition stage;
* Angle class I or straight step or mesial step molar relationship in primary dentition;
* Skeletal class I (ANB angle between 0° and 5°);
* Vertical dimension evaluated on lateral cephalograms: SN\^GoGn\>37°: hyperdivergent, SN\^GoGn\<27°: hypodivergent, 27°\<SN\^GoGn\>37°: normodivergent;
* Cervical vertebral stage 1 or 2 (CVS methods 1-2);
* Posterior cross-bite including deciduous or permanent teeth;
* Presence of good quality pre-treatment records (history, intraoral and extraoral photographs, oral scan, panoramic radiographs, and lateral cephalometric radiographs with reference ruler);
* Oral scan and photographs available for each subject 6 months after the beginning of the therapy;
* Signing the informed consent form.

Exclusion Criteria:

* Previous orthodontic treatment;
* Tooth agenesis or supernumerary teeth;
* Craniofacial abnormalities;
* Tooth impaction in the maxilla;
* Torus palatinus;
* History of dental trauma (avulsion and alveolar/jaw fracture);
* Refusal to sign consent form.

Where it's running

• UOC Clinica Odontoiatrica, Fondazione Poli..
  Roma, Italy Recruiting

Study contacts

• Principal investigator: Massimo Cordaro — Fondazione Policlinico Universitario Agostino Gemelli IRCCS
• Study coordinator: Massimo Cordaro
• Email: massimo.cordaro@policlinicogemelli.it
• Phone: +393356309535

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.