A prospective evaluation of Bass, Bionator and Twin Block appliances. Part II--The soft tissues.
A prospective evaluation of Bass, Bionator and Twin Block appliances. Part II--The soft tissues.
复制标题
对 Bass、Bionator 和 Twin Block 电器的前瞻性评估。
DOI：
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发表时间：
1998
影响因子：
2.6
通讯作者：
Robert T. Lee
中科院分区：
文献类型：
--
作者：
DO Morris;HM Illing;Robert T. Lee
建立了一项前瞻性临床研究，将47名患者随机分配到三个不同的功能矫治器组，并在9个月的时间内与略年轻的对照组进行比较。评估头影测量硬组织的变化与产生的软组织变化的关系，并通过面部软组织的三维(3D)激光扫描来评估患者。每一次“平均”的矫正器组扫描都与“平均”的对照组面部进行比较。在使用Twin Block矫治器的治疗组中，在统计学和临床上发生了显著的变化，而在使用Bionator矫治器的治疗组中，改变的程度较小。Bass矫治器组无统计学意义的面部软组织改变。尽管三种矫治器组的覆盖明显减少，但上唇位置保持稳定。在所有矫治器组中，下唇突(最大3.8 mm)、下唇长度(最大4.0 mm)、软组织下垂和总面部高度均有不同程度的增加。需要充分评估这些变化的长期影响。激光扫描系统被发现是一种灵敏而准确的方法来定量评估软组织面部形态的微小变化。该技术突出了面部组织在横断面上的显著变化。
A prospective clinical study with a random allocation of 47 patients to three different functional appliance groups was established and compared with a slightly younger control group over a 9-month period. The cephalometric hard tissue changes were assessed in relation to the soft tissue changes produced and the patients were also assessed by three-dimensional (3D) laser scanning of the facial soft tissues. Each 'averaged' appliance group scan was compared with the 'averaged' control group face. Statistically and clinically significant changes occurred in the group treated with the Twin Block appliance, and to a lesser extent in the group treated with the Bionator appliance. No statistically significant facial soft tissue changes could be demonstrated in the Bass appliance group. Upper lip position remained stable despite the significant overjet reduction attained in the three appliance groups. Lower lip protrusion (up to 3.8 mm), lower lip length (up to 4.0 mm), and soft tissue lower and total face height increased significantly in all appliance groups by varying amounts. The long-term effect of these changes needs to be fully evaluated. The laser scanning system was found to be a sensitive and accurate method of quantitatively assessing small changes in the soft tissue facial form. Significant changes of the facial tissues in the transverse plane were highlighted by this technique.