Removable Devices in Palatal Expansion

Comparison Between Removable Devices in Palatal Expansion: a Randomized Open Label Clinical Trial

The goal of this clinical trial si to compare two removable devices used to treat the transversal discrepancies in growing patients.

The main questions it aims to answer are:

• the efficacy of the two devices in the palatal expansion
• the neuromuscolar effects developed on the stomatognatic system Participants will be instructed in the use and maintenance of the devices and will be checked every 15-30 days for one year.

Inclusion Criteria:

skeletal class I relationship, molar class I relationship; complete eruption of upper first premolars ; presence of unilateral or bilateral cross bite (falling within grade 3 IOTN index)

Exclusion Criteria:

IOTN index >4; presence of temporomandibular disorders, epilepsy, systemic diseases, periodontal disease, absence of written informed consent signed by parents/legal guardians