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材料与方法 一、材料 选用以快速扩大法(以下称R.M.E)矫治的7例双侧上颌狭窄患者,其中男4例、女3例。年龄为12～14岁。其中有三例为唇、腭裂患者,均已作过整复术,但表现上颌明显发育不足,上牙弓狭窄。每例患者均于矫治前后制作石膏模型、并拍上颌咬合片。矫治开始都使用了装有扩大螺丝的上颌固定矫正器。(图1)。 二、方法 1.矫正器设计:在64|46上制作带环,(若无44则用33),带环腭侧用1.0～1.2mm不锈钢丝连接起来,钢丝两侧末端弯向中央,并作小弯曲埋入塑料基托中。基托紧贴两侧上腭,其中央装置扩大螺丝。注意螺丝要与硬腭离开5mm左右,以便于加
Materials and methods First, the material selection Rapid expansion method (hereinafter referred to as R.M.E) correction of bilateral maxillary stenosis in 7 patients, including 4 males and 3 females. The age of 12 to 14 years old. There are three cases of lip, cleft palate, have been made for the whole surgery, but the performance of maxillary obvious underdevelopment, the upper arch of the stenosis. Each patient was cast in the gypsum model before and after correction, and the maxillary occlusion film. The orthodontic treatment consisted of maxillary orthosis with enlarged screws. (figure 1). Second, the method 1. Orthotic design: the production of 64 64 on the ring, (if no 44 is used 33), with the ring palate with 1.0 ~ 1.2mm stainless steel wire connected to the ends of the wire bent to the center and Small bend embedded in plastic base. Base close to the palate on both sides, the central device to expand the screw. Note that the screw and hard palate left about 5mm, in order to facilitate