INTERVENTIONS
palate
The Hybrid Hyrax appliance used in this study was supported by two mini-implants
inserted in the anterior region of the palate, posterior to the third palatal
rugae, paramedian 2-3 mm from the palatal raphe, based on the appliance of
Wilmes et al.Mini-implants (1.5-mm in diameter; 8-mm in length, Dental Morelli LTDA,
Sorocaba/SP, Brazil) were inserted after local anesthesia using lidocaine.
Further, a digital dental scan of the maxillary arch was performed using an
intraoral scanner (Trios Pod version, 3Shape, Copenhagen, Denmark). The model
was printed using a Form2 printer (Form labs, Somerville, Massachusetts, USA),
and the appliance was fabricated on the printed model (
