Title
Soft tissue treatment changes with fixed functional appliances and with maxillary premolar extraction in Class II division 1 malocclusion patients
Date Issued
01 April 2018
Access level
open access
Resource Type
journal article
Author(s)
Janson G.
Branco N.C.
Castanha Henriques J.F.
De Morais J.F.
University of São Paulo
Publisher(s)
Oxford University Press
Abstract
Objective: The aim of this study was to compare the soft tissue changes and post-treatment status after complete fixed functional appliance non-extraction and maxillary premolar extraction treatment in patients with Class II division 1 malocclusion. Materials/methods: The sample consisted of 96 lateral cephalograms of 48 patients, divided into two groups. Group 1 consisted of 23 patients treated with fixed functional appliance associated with fixed appliances, with initial and final mean ages of 12.71 and 15.16 years, respectively, mean treatment time of 2.44 years and initial mean overjet of 6.83 mm. Group 2 comprised 25 patients treated with extraction of two maxillary premolars with initial and final mean ages of 13.05 and 15.74 years, respectively, mean treatment time of 2.67 years and initial mean overjet of 7.01 mm. t-Tests were used to compare treatment changes and the final cephalometric statuses between the groups. Results: According to the results, there was no inter-group difference regarding the soft tissue changes and post-treatment status. Limitations: The use of exclusively one type of fixed functional appliance in group 1 and performance of only one type of mechanics during space closure in group 2 were not always possible. Conclusion: Late pubertal patients with Class II division 1 malocclusion treated with fixed functional appliances associated with fixed appliances present similar soft tissue results as two-maxillary premolar extraction treatments.
Start page
214
End page
222
Volume
40
Issue
2
Language
English
OCDE Knowledge area
Odontología, Cirugía oral, Medicina oral
Scopus EID
2-s2.0-85051867637
PubMed ID
Source
European Journal of Orthodontics
ISSN of the container
01415387
Sources of information: Directorio de Producción Científica Scopus