Buccal Alveolar Bone changes and upper first molar displacement after maxillary expansion with RME, Ni-Ti leaf springs expander and Tooth- Bone-borne Expander. A CBCT based analysis.

• DOI: 10.23804/ejpd.2023.1896
• Publication Date: 2023-09-01
• Authors: M. Maschio; Francesca Gaffuri; Alessandro Ugolini; Valentina Lanteri; Andrea Abate; Alberto Caprioglio

To evaluate the buccal alveolar bone changes and upper first molar displacement in subjects treated with conventional rapid maxillary expansion (RME), Ni-Ti leaf springs expander (Leaf Expander) Tooth-Bone-borne Expander (Hybrid using CBCT scans.The sample consisted of 52 children RME (n=18), Leaf (n= 17) Hybrid 17). CBCTs were taken before after Horos software was used for analysis. Descriptive statistics paired t-test to assess between pre-treatment post-treatment measurements. ANOVA test Tukey's post hoc Bonferroni correction groups comparison.The during preadolescence showed few advantages over use tooth-anchored expanders. An approach mini-screws is not preferable early mixed dentition a approach. The differences dental tipping values clinically insignificant reduction cortical thickness remained less than 1 mm. When possible, second primary molars as anchorage should be preferred.