Rapid maxillary expansion with incisor intrusion: A study of vertical control

This is a prospective study of 20 consecutively treated patients needing maxillary expansion and incisor intrusion. The patients were treated with a bonded maxillary expansion appliance, intrusion of the incisors with either a one-piece or three-piece base arch and anchorage augmented by the use of...

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Veröffentlicht in:American journal of orthodontics and dentofacial orthopedics 1999-05, Vol.115 (5), p.576-582
Hauptverfasser: Pearson, Lloyd E., Pearson, Bradley L.
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container_title American journal of orthodontics and dentofacial orthopedics
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creator Pearson, Lloyd E.
Pearson, Bradley L.
description This is a prospective study of 20 consecutively treated patients needing maxillary expansion and incisor intrusion. The patients were treated with a bonded maxillary expansion appliance, intrusion of the incisors with either a one-piece or three-piece base arch and anchorage augmented by the use of vertical pull chincup therapy. Because rapid palatal expansion and intrusion of maxillary incisors both produce extrusion of posterior teeth, this study was undertaken to determine if a combination of controlled forces could prevent undesirable increases in vertical dimension. The maxillae were widened approximately 8 mm, the incisors were intruded 3 mm, the maxillary molars stayed the same or were intruded slightly, and the mandibular plane angle stayed essentially the same. In addition, A-point was retracted slightly and the occlusal plane was rotated in a counter-clockwise direction. (Am J Orthod Dentofacial Orthop 1999;115:576-82)
doi_str_mv 10.1016/S0889-5406(99)70283-0
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subjects Cephalometry - statistics & numerical data
Child
Dentistry
Extraoral Traction Appliances
Female
Humans
Incisor
Male
Malocclusion - therapy
Maxilla
Palatal Expansion Technique - instrumentation
Prospective Studies
Time Factors
Tooth Movement Techniques - instrumentation
title Rapid maxillary expansion with incisor intrusion: A study of vertical control
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