Larson M, Sällström K O, Larson O, McWilliam J, Ideberg M
Department of Jaw Orthopedics, University Hospital, Uppsala, Sweden.
Cleft Palate Craniofac J. 1993 Jan;30(1):29-34. doi: 10.1597/1545-1569_1993_030_0029_meopmo_2.3.co_2.
Sixty-eight children born with complete unilateral cleft lip and palate were studied using dental casts taken at ages 0-0.1; 0.2-0.4; and 0.5-0.6 years of age. They were all treated with preoperative maxillofacial orthopedics using an external device (T-traction). The treatment was started after the first model was taken. Dental casts were analyzed regarding the morphology of the cleft region and the maxillary segments before and after treatment. The measurements were compared with measurements on dental casts of nontreated cleft children of similar age. The results suggest that a more normal anatomy of the cleft region occurs during the first 6 months of life whether preoperative maxillofacial orthopedics (T-traction) is used or not. However, this normalized growth seems to occur faster with the T-traction.
对68名单侧完全性唇腭裂患儿进行了研究，这些患儿分别在0至0.1岁、0.2至0.4岁以及0.5至0.6岁时取了牙模。他们均使用外部装置（T型牵引）进行术前颌面正畸治疗。在获取首个模型后开始治疗。对治疗前后的牙模进行分析，观察腭裂区域和上颌骨段的形态。将测量结果与年龄相仿的未治疗腭裂患儿的牙模测量结果进行比较。结果表明，无论是否使用术前颌面正畸治疗（T型牵引），在出生后的前6个月内，腭裂区域的解剖结构都会变得更加正常。然而，使用T型牵引时，这种正常化的生长似乎会更快出现。
