Comparison of Rapid and Semi-Rapid Maxillary Expansion Efficiency According to Skeletal Maturation Stages: A Retrospective Study

Objective: This study aimed to compare the skeletal and dentoalveolar effects of expansion force created by semi-rapid rapid activation protocols. Material Methods: The comprised 54 patients (26 female 28 male) with transverse maxillary insufficiency. Of these patients, 22 were treated (SRME) 32 (RME). SRME group consisted 6 prepubertal, 8 pubertal, postpubertal RME 11 10 patients. Treatment both protocols evaluated different measurements on posteroanterior cephalograms plaster models taken before treatment after a retention period 3 months. Kruskal-Wallis analysis was used for comparisons between maturation periods. Independent sample t-test Mann-Whitney U test Bonferroni correction pairwise two Results: increases in nasal dental widths found be higher than prepubertal patient (p0.05). No statistically significant difference among groups all (p>0.05). Conclusion: current represented some evidence that protocol might cause less tissue resistance conventional RME. efficiency therapy is similar whom sutural resolved.