Palatal surface area measurement: Comparisons among different cleft types
Palatal surface area measurement: Comparisons among different cleft types
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DOI：
10.1097/00000637-200301000-00004
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发表时间：
2003-01-01
影响因子：
1.5
通讯作者：
Ko, EWC
中科院分区：
文献类型：
--
作者：
Lo, LJ;Wong, FH;Ko, EWC
本研究的目的是利用三维成像方法测量未修复腭裂患者的腭面。对4组3月龄唇腭裂患者的牙石膏模型进行三维计算机断层成像，确定并测量腭裂的表面面积。单侧完全性唇腭裂（UCLP） 30例，双侧完全性唇腭裂（BCLP） 27例，完全性完全性腭裂（GP） 23例，单侧无腭裂（UCL） 19例。这些患者无综合征，未手术，无其他重大畸形。对牙模进行扫描，并将计算机断层扫描数据传输到成像实验室进行处理和重建三维图像。上颚的表面积被划定，其定义为在牙槽嵴和连接两个结节的线内。在UCLP和BCLP中，腭裂边缘形成各腭架区域的内侧边界，BCLP组的腭表面积为两腭架和上颌前区域的结合。测量了表面面积。重复定义和测量任务以计算误差。使用Analyze程序（Biomedical imaging Resource, Mayo Foundation， MN）对成像数据进行管理和测量。此外，测量牙槽嵴犬齿点（线C）与结节点（线T）之间的线性距离。对不同组的测量结果进行比较。采用方差分析和多重比较进行统计分析。结果表明，本研究中重复区域定义与测量值的平均误差为1.86%。双侧完全性唇腭裂（BCLP）组和单侧完全性唇腭裂（UCLP）组的腭表面积显著小于单侧无腭裂（UCL）组和孤立性不完全性腭裂（CP）组。BCLP组与UCLP组间无显著差异。BCLP和UCLP组的C线和T线距离显著长于UCL和CP组。结果表明，与UCL和CP患者相比，BCLP和UCLP患者的上颚存在固有的组织缺陷。
The purpose of this study was to use three-dimensional imaging methods to measure the palatal surface of unrepaired cleft patients. The surface area of the palate was defined and measured on three-dimensional computed tomography images of dental plaster models in four different groups of cleft patients at 3 months of age. There were 30 unilateral complete cleft lips and palates (UCLP), 27 bilateral complete cleft lips and palates (BCLP), 23 isolated cleft palates of incomplete form (GP), and 19 unilateral cleft lips without cleft palates (UCL). These patients were nonsyndromic, unoperated, and without other major deformities. The dental casts were scanned, and the computed tomography data were transferred to an imaging laboratory for processing and reconstruction of three-dimensional images. Surface area of the palate was delineated, which was defined as within the alveolar crest and the line connecting both tuberosities. In UCLP and BCLP, the edge of cleft formed the medial boundary of the area for each palatal shelf, and the palatal surface area was the combination of both palatal shelves and the premaxillary area in BCLP group. The surface area was measured. Repeated definition and measurement tasks were performed for calculation of errors. The imaging data management and measurement were performed using the Analyze program (Biomedical Imaging Resource, Mayo Foundation, MN). In addition, linear distances were measured between the canine points on the alveolar crest (line C) and the tuberosity points (line T). The measurements were compared among the different groups. Analysis of variance and multiple comparisons were used for statistical analyses. The results showed that the mean error between repeated area definitions and measurements in this study was 1.86%. The bilateral complete cleft lip and palate (BCLP) and unilateral complete cleft lip and palate (UCLP) groups had significantly smaller palatal surface area than the unilateral cleft lip without cleft palate (UCL) and isolated cleft palate of incomplete form (CP) groups. There was no significant difference between the BCLP and UCLP groups. Line C and line T distances were significantly longer in BCLP and UCLP groups than in UCL and CP groups. The findings suggest that compared with UCL and CP patients, there is an intrinsic tissue deficiency in the palate/maxilla of BCLP and UCLP patients.