Strömberg C, Holm J
Department of Oral and Maxillofacial Surgery, Central Hospital, Karlstad, Sweden.
J Craniomaxillofac Surg. 1995 Aug;23(4):222-7. doi: 10.1016/s1010-5182(05)80211-2.
This study presents a technique for surgically assisted, rapid maxillary expansion performed on 20 patients and the results after orthodontic treatment. The mean age of the patients was 36.3 years and on average they had been followed-up for 3 years and 6 months. The results seemed to be reliable long-term. The definitive expansion in the first molar region was 7.1 mm +/- 2.4 and in the canine region 4.8 mm +/- 2.7. The relapse measured after the observation period, was in the corresponding regions 1.2 mm +/- 1.3 and 0.2 mm +/- 2.1. The study also seemed to support the theory that the suture, anterior to the incisive canal, never ossifies until very late in life.
本研究介绍了对20例患者实施手术辅助快速上颌扩弓的技术以及正畸治疗后的结果。患者的平均年龄为36.3岁，平均随访时间为3年6个月。结果显示长期效果似乎可靠。第一磨牙区域的最终扩弓量为7.1毫米±2.4，尖牙区域为4.8毫米±2.7。观察期后测量的复发量，在相应区域分别为1.2毫米±1.3和0.2毫米±2.1。该研究似乎也支持这样一种理论，即切牙管前方的缝直到生命晚期才会骨化。
