Jensen A C, Sinclair P M, Wolford L M
University of North Carolina.
Am J Orthod Dentofacial Orthop. 1992 Mar;101(3):266-75. doi: 10.1016/0889-5406(92)70096-S.
The purpose of this study was to evaluate the amount, direction, and predictability of the soft tissue changes associated with simultaneous maxillary impaction and mandibular advancement surgery. The results suggested that the soft tissue responses were similar to those seen in single jaw procedures, with the exception of the changes seen in the nasolabial angle and in the area of the lower lip and chin. The type of soft tissue manipulation employed, in particular the use of the alar base cinch suture and V-Y closure techniques, were important factors in determining the response of the upper lip to the surgery. The maxillary soft tissues moved forward 90% of the hard tissue change and showed 20% shortening of the upper lip, with the changes in the nasolabial angle being due primarily to the degree of the maxillary rotation. A predictable progressive increase was seen in the horizontal movement of the mandibular soft tissues ranging from 73% of the hard tissue change at the lower lip to 100% at pogonion. The vertical movement of the mandibular soft tissue was greater than that of underlying hard tissues, particularly in the area of the lower lip as it was freed from the effects of the maxillary incisors.
本研究的目的是评估与上颌骨垂直牵引和下颌骨前徙手术相关的软组织变化的量、方向和可预测性。结果表明，软组织反应与单颌手术所见相似，但鼻唇角以及下唇和下巴区域的变化除外。所采用的软组织处理类型，特别是鼻翼基底收紧缝合和V-Y闭合技术的使用，是决定上唇对手术反应的重要因素。上颌软组织向前移动了硬组织变化的90%，上唇缩短了20%，鼻唇角的变化主要归因于上颌旋转的程度。下颌软组织的水平移动呈现出可预测的逐渐增加，范围从下唇处硬组织变化的73%到颏前点处的100%。下颌软组织的垂直移动大于其下方硬组织的垂直移动，尤其是在下唇区域，因为它摆脱了上颌切牙的影响。
