Anthropometric evaluation of bilateral cleft lip nose with cone beam computed tomography in early childhood: Estimation of nasal tip collapse
Anthropometric evaluation of bilateral cleft lip nose with cone beam computed tomography in early childhood: Estimation of nasal tip collapse
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DOI：
10.1016/j.bjps.2011.08.036
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发表时间：
2012-02-01
影响因子：
2.7
通讯作者：
Kishi, Kazuo
中科院分区：
文献类型：
--
作者：
Miyamoto, Junpei;Miyamoto, Shimpei;Kishi, Kazuo
背景：唇裂鼻的鼻尖特征不能用传统的测量方法很好地确定。因此，我们开发了一种新的方法，其中垂直鼻尖（鼻突）的位置评估的基础上法兰克福水平面。方法：回顾性分析13例5 ~ 8岁双侧唇裂鼻整形术后患者的锥形束CT（Cone beam computed tomography，CT）资料。作为年龄匹配的对照组，包括正常组（n = 17）和初次鼻成形术后完全单侧唇裂组（n = 19）的数据。结果：双侧唇裂患者的鼻唇角（beta）、鼻尖角（alpha）、鼻宽（al-al）、鼻小柱长（sn-c '）、鼻尖前突（sn-prn）、鼻尖垂直位置（sn'-prn '/sn'-n '）测量数据除鼻尖垂直位置和鼻宽外，其余均符合要求。双侧唇裂组鼻尖垂直位置显著高于正常组和单侧唇裂组，鼻宽显著大于正常组和单侧唇裂组（分别为P < 0.0001和P = 0.0298; P = 0.0001和P = 0.0002）。在唇裂鼻中，通常组成鼻尖圆顶的下外侧软骨向外张开，导致鼻突点的头部定位。双侧唇裂组鼻尖塌陷较单侧唇裂组严重。这些结果与许多双侧唇裂患者在青春期后甚至在初次鼻成形术后需要隆鼻术的事实相一致。(C)2011年英国整形、重建和美容外科医生协会。由爱思唯尔有限公司出版。保留所有权利。
Background: Nasal tip features of cleft lip nose cannot be defined well using conventional measurement methods. Therefore, we developed a new method in which vertical nasal tip (the pronasale) position is evaluated based on the Frankfurt-Horizontal plane. This measurement was applied to bilateral cleft lip patients in early childhood.Methods: Cone beam computed tomography (CT) records of bilateral cleft lip patients after primary rhinoplasty aged from 5 to 8 years (n = 13) were investigated retrospectively. As age-matched controls, data from a normal group (n = 17) and complete unilateral cleft lip group after primary rhinoplasty (n = 19) were included. In each group, nasolabial angle (beta), nasal tip angle (alpha), nasal width (al-al), columellar length (sn-c'), nasal tip protrusion (sn-prn), and vertical nasal tip position (sn'-prn'/sn'-n') were investigated.Results: With the exception of vertical nasal tip position and nasal width, the measurement data of the bilateral cleft lip patients were acceptable. In the bilateral cleft lip group, however, vertical nasal tip position was significantly higher and nasal width was significantly larger than those in the normal and unilateral groups (P < 0.0001 and P = 0.0298; P = 0.0001 and P = 0.0002, respectively).Conclusions: In cleft lip nose, the lower lateral cartilage that normally composes the nasal tip domes is splayed out, causing cephalic positioning of the pronasale. Nasal tip collapse was more severe in bilateral cleft lip than in the unilateral group. These results were compatible with the fact that many bilateral cleft lip patients require augmentation rhinoplasty after adolescence even after primary rhinoplasty. (C) 2011 British Association of Plastic, Reconstructive and Aesthetic Surgeons. Published by Elsevier Ltd. All rights reserved.