Fig. 4From: The immediate effect of alternate rapid maxillary expansions and constrictions on the alveolus: a retrospective cone beam computed tomography studyThe changes of alveolar bone thickness at the first molars (upper row), second premolars (middle row), first premolars (bottom row) before expansion (T0), and 7-week Alt-RAMEC (T1). The first premolars (bottom row) had the greatest buccal alveolar bone thickness reduction at 7-week Alt-RAMECBack to article page