The effect of first premolar extraction on vertical dimension

The purpose of this study was to evaluate the vertical changes occurring in Class I patients treated orthodontically with first premolar extraction and to compare these changes with those occurring in Class I patients treated orthodontically without extractions. Records of 40 Class I nonextraction c...

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Bibliographic Details
Published in:American journal of orthodontics and dentofacial orthopedics 1999-07, Vol.116 (1), p.41-45
Main Author: Kocadereli, I
Format: Article
Language:English
Subjects:
Bicuspid - surgery
Cephalometry
Child
Chin - pathology
Dentistry
Female
Humans
Male
Malocclusion, Angle Class I - pathology
Malocclusion, Angle Class I - therapy
Mandible - pathology
Maxilla - pathology
Nose - pathology
Radiographic Image Enhancement
Sella Turcica - pathology
Serial Extraction
Tooth Movement Techniques
Treatment Outcome
Vertical Dimension
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Summary:The purpose of this study was to evaluate the vertical changes occurring in Class I patients treated orthodontically with first premolar extraction and to compare these changes with those occurring in Class I patients treated orthodontically without extractions. Records of 40 Class I nonextraction cases (24 girls, 16 boys) and 40 Class I maxillary and mandibular first premolar extraction cases (23 girls, 17 boys) were obtained. The pretreatment and posttreatment cephalograms were digitized, and 6 linear and 8 angular cephalometric measurements were selected to evaluate vertical changes. Evaluation of the treatment results of the extraction and nonextraction cases showed that the vertical changes occurring after the extraction of maxillary and mandibular first premolars were not different than those occurring in the nonextraction cases. (Am J Orthod Dentofacial Orthop 1999;116:41-5)
ISSN:0889-5406
1097-6752
DOI:10.1016/S0889-5406(99)70301-X