Pogrel M A, Kaban L B, Vargervik K, Baumrind S
University of California, San Francisco, School of Dentistry.
Int J Adult Orthodon Orthognath Surg. 1992;7(1):37-41.
Twelve adults with maxillary width discrepancy of greater than 5 mm were treated by surgically assisted rapid maxillary expansion. The procedure consisted of bilateral zygomatic buttress and midpalatal osteotomies combined with the use of a tooth-borne orthopedic device postoperatively. Mean palatal expansion of 7.5 mm (range of 6 to 13 mm), measured in the first molar region, was achieved within 3 weeks in all patients. Expansion remained stable during the 12-month study period, with a mean relapse for the entire group of 0.88 +/- 0.48 mm. Morbidity was limited to mild postoperative discomfort. The results of this preliminary study indicated that surgically assisted rapid maxillary expansion is a safe, simple, and reliable procedure for achieving a permanent increase in skeletal maxillary width in adults. Further study is necessary to document the three-dimensional movements of the maxillary segments and long-term stability of the skeletal and dental changes.
12名上颌宽度差异大于5毫米的成年人接受了外科辅助快速上颌扩弓治疗。该手术包括双侧颧突支柱截骨术和腭中缝截骨术，并在术后使用牙支持式矫形装置。所有患者在3周内实现了第一磨牙区平均7.5毫米（范围为6至13毫米）的腭部扩弓。在12个月的研究期内，扩弓效果保持稳定，整个组的平均复发量为0.88±0.48毫米。发病率仅限于轻微的术后不适。这项初步研究的结果表明，外科辅助快速上颌扩弓是一种安全、简单且可靠的手术方法，可使成年人的上颌骨宽度永久性增加。有必要进行进一步研究以记录上颌骨段的三维运动以及骨骼和牙齿变化的长期稳定性。
