"A 6-months Evaluation of Patients' Compliance and Oral Hygiene During Rapid Maxillary Expander (RME) Treatment Using Ortodontika Smartphone Application"

parents will download and use Ortodontika smartphone application for all the duration of the study. It will be an aid during orthopedic treatment. During the activations, a notification will be set to remind the daily activation of RME. After the end of the activation protocol, parents will receive a notification every 2 weeks to instruct their children to proper oral hygiene maneuvers. Parents will have to show their children the videos for oral hygiene maintenance every 2 weeks until the end of the study.

verbal instructions will be given chairside to patients and parents regarding RME activation and its cleaning, together with instructions for daily oral hygiene manoeuvres.