American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics
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Am J Orthod Dentofacial Orthop · Jun 2009
Twenty-year cohort study of health gain from orthodontic treatment: temporomandibular disorders.
Temporomandibular disorder (TMD) is a common condition. Studies of TMD in relation to orthodontic treatment did not show an association, but longitudinal studies from adolescence to adulthood are lacking. The aim of this study was to investigate the relationship between orthodontic treatment and TMD with a longitudinal study design. ⋯ Orthodontic treatment neither causes nor prevents TMD. Female sex and TMD in adolescence were the only predictors of TMD in young adulthood.
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Am J Orthod Dentofacial Orthop · Nov 2008
Comparative Study Controlled Clinical TrialComparison of treatment outcomes between skeletal anchorage and extraoral anchorage in adults with maxillary dentoalveolar protrusion.
The goal of this retrospective cephalometric study was to compare orthodontic outcomes in patients with maxillary dentoalveolar protrusion malocclusion treated with extraoral headgear or mini-implants for maximum anchorage. ⋯ In both the anteroposterior and vertical directions, skeletal anchorage achieved better control than did the traditional headgear appliance during the treatment of maxillary dentoalveolar protrusion. Greater retraction of the maxillary incisor, less anchorage loss of the maxillary first molar, and the possibility of counterclockwise mandibular rotation all facilitated the correction of the Class II malocclusion.
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Am J Orthod Dentofacial Orthop · Nov 2008
Case ReportsOrthodontic treatment of Class II malocclusion with miniscrew implants.
Orthodontic treatment of patients with Class II malocclusion who show poor compliance with conventional treatment modalities such as extraoral headgear, functional orthopedic appliances, or conventional fixed appliances with intermaxillary elastics, can be challenging. Noncompliance approaches can be used, but they often pose anchorage problems. ⋯ This case report illustrates the use of MISDS to distalize the maxillary molars and retract the anterior teeth, providing noncompliance, nonextraction, and efficient approach for the orthodontic treatment of patients with Class II malocclusion, which is initially invisible.
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Am J Orthod Dentofacial Orthop · Oct 2008
Putative golden proportions as predictors of facial esthetics in adolescents.
In orthodontics, facial esthetics is assumed to be related to golden proportions apparent in the ideal human face. The aim of the study was to analyze the putative relationship between facial esthetics and golden proportions in white adolescents. ⋯ Few golden proportions have a significant relationship with facial esthetics in adolescents. The explained variance of these variables is too small to be of clinical importance.
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Am J Orthod Dentofacial Orthop · Sep 2008
Treatment and posttreatment skeletal effects of rapid maxillary expansion studied with low-dose computed tomography in growing subjects.
The aim of this study was to apply low-dose computed tomography (CT) to evaluate treatment and posttreatment effects produced by rapid maxillary expansion (RME) at the levels of the midpalatal suture and the pterygoid processes. ⋯ At the end of the retention phase after RME therapy, the transverse width of the midpalatal suture was similar to the pretreatment width, whereas the width between the pterygoid processes was significantly increased.