Activation Intervals Effects on Non-surgical Maxillary Expansion in Adults

OBJECTIVE: To evaluate the effects of different time intervals activations on the non‐surgical maxillary expansion in adults. Methods: This study will include two groups, 10 adult patients each (mean age 20‐35) with maxillary transverse deficiency and unilateral or bilateral crossbite. In the first group, the expansion is going to be activated every four days. In the second group, activation will occur every eight days. The primary outcomes are transverse dimension, the buccal cortical bone formation, and the upper premolar and molar labial inclination. Dentoalveolar changes will be evaluated using CBCT images and digital models.