Chen Kaiyun, Zheng Yi, Wang Xin
College of Stomatology, West China University of Medical Sciences.
Hua Xi Kou Qiang Yi Xue Za Zhi. 2002 Feb;20(1):35-8.
One of the prime concerns of both the orthodontist and the oral surgeon must be the final soft tissue profile and the esthetic appearance of the patient. The purpose of this study was to evaluate the amount, direction, and predictability of the soft tissue changes associated with simultaneous skeletal changes.
The authors analyzed the recent 22 cases with skeletal class II maloclusion in Orthodontic Department, College of Stomatology, West China University of Medical Sciences with 7 male and 15 female from 20 to 30 years old. Each patient was taken standardized lateral cephalograms before the treatment and 6-12 months after the treatment. A total of 16 hard and soft tissue landmarks were evaluated in both horizontal and vertical directions.
In the horizontal directions, the soft tissue maxillary landmarks (superior labial sulcus, labrale superius, and upper lip stomion) moved posterior with a range of 2.17 to 2.33 mm. The strongest correlations were found between the posterior movement of the upper incisal edge and the three soft tissue parameters: superior labial sulcus r = 0.78, labrale superius r = 0.81, upper lip stomion r = 0.75. The soft/hard tissue ratios of the mandible anterior movement is 0.83:1 between inferior labial sulcus and B point, and 0.95:1 for Pog' to Pog. In the vertical directions, all the soft tissue mandible landmarks (Pog', inferior labial sulcus, labrale inferius, lower lip stomion) moved upward more than 2 mm. And the soft/hard tissue ratio is from 1.07:1 to 1.34:1.
The combined orthodontic and surgical treatment is an efficient way to cure skeletal class II malocclusion. All the patients regained satisfactory face appearance and profile. Although the soft tissue movement is less than the hard tissue in both jaws in the horizontal direction, the vertical movement of the mandibular soft tissue is greater than that of the underlying hard tissue.
正畸医生和口腔外科医生最主要的关注点之一必然是患者最终的软组织侧貌和美观外观。本研究的目的是评估与骨骼变化同时发生的软组织变化的量、方向及可预测性。
作者分析了华西医科大学口腔医学院正畸科近期收治的22例骨骼Ⅱ类错 畸形患者，其中男性7例，女性15例，年龄在20至30岁之间。每位患者在治疗前及治疗后6 - 12个月拍摄标准化的头颅侧位片。在水平和垂直方向上共评估了16个软硬组织标志点。
在水平方向上，软组织上颌标志点（上唇沟、上唇缘点、上唇切牙点）向后移动，移动范围为2.17至2.33 mm。上前牙切缘的向后移动与三个软组织参数之间存在最强的相关性：上唇沟r = 0.78，上唇缘点r = 0.81，上唇切牙点r = 0.75。在下唇沟与B点之间，下颌前部移动的软组织/硬组织比值为0.83:1，Pog'至Pog的比值为0.95:1。在垂直方向上，所有下颌软组织标志点（Pog'、下唇沟、下唇缘点、下唇切牙点）向上移动超过2 mm。软组织/硬组织比值为1.07:1至1.34:1。
正畸与外科联合治疗是矫治骨骼Ⅱ类错 畸形的有效方法。所有患者均获得了满意的面部外观和侧貌。虽然在水平方向上，上下颌的软组织移动均小于硬组织，但下颌软组织的垂直移动大于其下方的硬组织。
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