Removable Devices in Overjet Reduction

Comparison Between Removable Devices in Overjet Reduction: a Randomised Open Label Clinical Trial

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

The main questions it aims to answer are:

• the efficacy of the two devices in the reduction of the overjet
• 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 II relationship,
• complete eruption of upper first premolars
• presence of unilateral or bilateral cross bite (falling within grade 3 IOTN index).

Exclusion Criteria:

• IOTN (INDEX OF ORTHODONTIC TREATMENT NEED) index > 4;
• presence of epilepsy,
• systemic disease,
• TMD, or periodontal disease;
• lack of written informed consent from a parent or legal guardian.