拔牙与非拔牙治疗后三维牙弓及腭部形态变化。第2部分。腭部容积与高度。
Three-dimensional dental arch and palatal form changes after extraction and nonextraction treatment. Part 2. Palatal volume and height.
作者信息
Heiser Wolfgang, Niederwanger Andreas, Bancher Beatrix, Bittermann Gabriele, Neunteufel Nikolaus, Kulmer Siegfried
机构信息
Department of Internal Medicine, University of Innsbruck, Innsbruck, Austria.
出版信息
Am J Orthod Dentofacial Orthop. 2004 Jul;126(1):82-90. doi: 10.1016/j.ajodo.2003.05.016.
The purpose of this study was to investigate the changes in palatal volume and palatal height in patients treated with and without premolar extractions. Records were collected at pretreatment, at bracket removal, at the end of retention, and 5 years out of retention. Stone casts were mounted in a SAM 2 articulator with an anatomic face-bow and a central wax record, and measurements were made with a 3-dimensional digitizer. The hypothesis, that orthodontic treatment with premolar extractions changes the palatal form, was verified. Increases in palatal volume and height were demonstrated in the nonextraction group. The extraction group showed a decrease in palatal volume but could compensate for some loss by an increase in volume in the anterior segment.
本研究的目的是调查拔牙和不拔牙治疗的患者腭部容积和腭部高度的变化。在治疗前、去除矫治器时、保持结束时以及保持结束5年后收集记录。将石膏模型用解剖面弓和正中蜡记录固定在SAM 2型咬合架上，并用三维数字化仪进行测量。拔牙正畸治疗会改变腭部形态这一假设得到了验证。非拔牙组腭部容积和高度增加。拔牙组腭部容积减小，但前牙段容积增加可弥补部分损失。
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