Braun S, Hnat W P, Hnat T W, Legan H L
Vanderbilt University Medical Center, Louisville, KY, USA.
Am J Orthod Dentofacial Orthop. 2001 Feb;119(2):121-6. doi: 10.1067/mod.2001.110986.
Mandibular symphyseal distraction osteogenesis has recently been introduced as a means of resolving arch length deficiencies in the anterior segment and as a method of reducing large vestibular spaces related to a narrow mandible. Accurately relating the required distraction for a given anterior tooth mass and desired future anteroposterior location of the central incisors has not been possible until recently. The relationship between these 3 controlling factors has been mathematically described by the hyperbolic cosine function and a computer program designed for easy use by the clinician. Two clinical cases illustrate the application of the program. A Web site where the program can be downloaded at no cost is mentioned.
下颌骨联合部牵张成骨术最近已被引入,作为解决前段牙弓长度不足的一种手段,以及作为减少与下颌骨狭窄相关的大前庭间隙的一种方法。直到最近,才有可能准确地确定给定前牙量所需的牵张量以及中央切牙未来期望的前后位置。这三个控制因素之间的关系已通过双曲余弦函数进行了数学描述,并设计了一个便于临床医生使用的计算机程序。两个临床病例说明了该程序的应用。文中提到了一个可以免费下载该程序的网站。