Effects of cervical headgear and edgewise appliances on growing patients
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Maxillary basal bone, dentoalveolar, and dental changes in Class II Division 1 patients treated to normal occlusion by using cervical headgear and edgewise appliances were retrospectively evaluated. A sample of 45 treated patients was compared with a group of 30 untreated patients. Subjects were drawn from the Department of Orthodontics, Araraquara School of Dentistry, Brazil, and ranged in age from 7.5 to 13.5 years. The groups were matched based on age, gender, and malocclusion. Roughly 87% of the treated group had a mesocephalic or brachicephalic pattern, and 13% had a dolicocephalic pattern. Cervical headgear was used until a Class I dental relationship was achieved. Our results demonstrated that the malocclusions were probably corrected by maintaining the maxillary first molars in position during maxillary growth. Maxillary basal bone changes (excluding dentoalveolar changes) did not differ significantly between the treated and the untreated groups. Molar extrusion after the use of cervical headgear was not supported by our data, and this must be considered in the treatment plan of patients who present similar facial types. (Am J Orthod Dentofacial Orthop 2001;119:531-9).
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case control study, cephalometry, growth, development and aging, malocclusion, maxilla, molar tooth, nonparametric test, orthodontic device, skull base, treatment outcome, Extraoral Traction Appliances, Malocclusion, Angle Class II, Molar, Statistics, Nonparametric, Treatment Outcome
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Inglês
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American Journal of Orthodontics and Dentofacial Orthopedics, v. 119, n. 5, p. 531-538, 2001.
