Treatment timing for rapid maxillary expansion

The Angle Orthodontist
Tiziano BaccettiJames A McNamara

Abstract

The aim of this study was to evaluate the short-term and long-term treatment effects of rapid maxillary expansion in 2 groups of subjects treated with the Haas appliance. Treatment outcomes were evaluated before and after the peak in skeletal maturation, as assessed by the cervical vertebral maturation (CVM) method, in a sample of 42 patients compared to a control sample of 20 subjects. Posteroanterior cephalograms were analyzed for the treated subjects at T1 (pretreatment), T2 (immediate post-expansion) and T3 (long-term observation), and were available at T1 and at T3 for the controls. The mean age (years: months) at T1 was 11:10 for both the treated and the control groups. The mean ages at T3 also were comparable (20:6 for the treated group and 17:8 for the controls). Following expansion and retention (2 months on average), fixed standard edgewise appliances were placed. The study included transverse measurements on dentoalveolar structures, maxillary and mandibular bases and other craniofacial regions (nasal, zygomatic, orbital, and cranial). Treated and control samples were divided into 2 groups according to individual skeletal maturation. The early-treated and early-control groups had not reached the pubertal peak in skel...Continue Reading

Citations

Jun 15, 2006·BMC Medical Imaging·Philippe HujoelAlex Grosso
Jun 6, 2012·Journal of Applied Oral Science : Revista FOB·Renato Rodrigues de AlmeidaHenry Victor Alves Marques
Jul 11, 2020·Sleep & Breathing = Schlaf & Atmung·Audrey YoonDaniela Silva

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