Sagittal dentoskeletal modifications associated with different activation protocols of rapid maxillary expansion

Authors

  • A Baldini Dental School, Vita-Salute San Raffaele University, Milan
  • A Nota Dental School, Vita-Salute San Raffaele University, Milan
  • C Santariello Department of Clinical Sciences and Translational Medicine, University of Rome Tor Vergata
  • S Caruso Department MeSVA, University of L'Aquila
  • V Assi Edinburgh Clinical Trials Unit (ECTU), University of Edinburgh
  • F Ballanti Department of Clinical Sciences and Translational Medicine, University of Rome Tor Vergata
  • R Gatto Department MeSVA, University of L'Aquila
  • P Cozza Department of Clinical Sciences and Translational Medicine, University of Rome Tor Vergata

DOI:

https://doi.org/10.23804/ejpd.2018.19.02.10

Keywords:

Cephalometry, Maxillary expansion, Orthodontic appliances, Orthodontics, Palatal expansion

Abstract

AIM: The aim of this study is to compare the sagittal dentoskeletal changes associated with different activation protocols of maxillary expander. METHODS: A total of 101 subjects with constricted maxillary arches (49 males and 52 females; mean age 10.08 ± 1.57 years) were enrolled in the study. The study comprised also a control group of 20 subjects (11 females and 9 males, mean age 10.27 ± 1.24 years) who were not treated during the observation period. All the subjects underwent rapid maxillary expansion with a stainless steel banded expander cemented to the maxillary first molars. The expansion screw was randomly activated with two different rapid maxillary expansion protocols (one-quarter per day or two-quarters per day). A statistical comparison between the sagittal cephalometric variations obtained in the two expansion groups was made, and compared with the untreated control group. Data were then stratified for skeletal maturation of each subject.

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