Comparison of orthodontic and orthopedic effects of a modified maxillary protractor between deciduous and early mixed dentitions

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
K KajiyamaAkira Suzuki

Abstract

The purpose of this study was to investigate the effects of the maxillary protractor bow appliance (MPBA) on dentoalveolar structure and skeletal morphology in patients with Class III malocclusions in different dental stages. The sample consisted of 63 treated and 57 untreated Japanese patients who all had anterior crossbites. The former group was treated with MPBA and included 34 subjects with deciduous dentition (DT group) and 29 subjects with early mixed dentition (MT group). In the DT group, MPBA was used over a mean period of 5 months to obtain positive overjet, and, in the MT group, MPBA was used over a mean period of 10 months identically. Analysis of variance with 3 factors (appliance, treatment stage, sex) between treated and untreated subjects and unpaired t tests between DT and MT groups were performed from 2 lateral cephalograms before and after treatment to compare the dentofacial changes. The mechanisms of improving anterior crossbite were similar in both groups; however, the mean skeletal and dentoalveolar changes in the DT group were significantly greater than those in the MT group. The clinical effects of MPBA treatment were greater in the deciduous-dentition group than in the early-mixed-dentition group.

Citations

Aug 18, 2010·L' Orthodontie française·Sarah Gebeile-ChautyJean-Jacques Aknin
Dec 29, 2017·Orthodontics & Craniofacial Research·W-C LeeE Fu
Jul 28, 2019·Case Reports in Dentistry·Echeverry Juan Carlos, Barbosa-Liz Diana
May 21, 2010·The Angle Orthodontist·Dong-Yul LeeSug-Joon Ahn
Apr 1, 2010·Journal of Orofacial Orthopedics = Fortschritte Der Kieferorthopädie : Organ/official Journal Deutsche Gesellschaft Für Kieferorthopädie·Claudia Sade HoefertGernot Göz
May 12, 2010·European Journal of Orthodontics·Devrim IsciSelma Elekdag-Turk
Apr 18, 2008·The Angle Orthodontist·Laura De ToffolPaola Cozza
Feb 3, 2015·The Cleft Palate-craniofacial Journal : Official Publication of the American Cleft Palate-Craniofacial Association·Wakako TomeTakashi Yamashiro
Jan 1, 2012·The Journal of Clinical Pediatric Dentistry·B Solano-MendozaE Solano-Reina
Dec 20, 2013·European Journal of Orthodontics·Eliana YepesAndrea Pedroza
Jun 21, 2007·L' Orthodontie française·Carine Benyounes-Uzan
Dec 12, 2017·Progress in Orthodontics·Saad A Al-MozanyM Ali Darendeliler
Oct 31, 2014·International Journal of Clinical Pediatric Dentistry·Mohammadi Begum Khan, Arjun Karra

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
K KajiyamaA Suzuki
European Journal of Orthodontics
O UnerNeslihan Ucuncü
American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
Sung-Jin KimHyoung-Seon Baik
Journal of Orofacial Orthopedics = Fortschritte Der Kieferorthopädie : Organ/official Journal Deutsche Gesellschaft Für Kieferorthopädie
Catharina WeyrichJörg A Lisson
© 2022 Meta ULC. All rights reserved