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首页> 外文期刊>The Journal of Prosthetic Dentistry >A comparative analysis of optical and conventional axiography for the analysis of temporomandibular joint movements.
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A comparative analysis of optical and conventional axiography for the analysis of temporomandibular joint movements.

机译：光学和常规血管造影的比较分析，用于颞下颌关节运动的分析。

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STATEMENT OF PROBLEM: Currently available systems for pantographic tracing are heavy, bulky, and can interfere with jaw movements. PURPOSE: This study describes the development and clinical application of optoelectronic axiography designed to overcome system inherent problems of conventional bulky frame-based registration axiography. The purpose of this study is the comparison of the newly developed system and conventional axiography. MATERIAL AND METHODS: Three-dimensional recordings of condylar pathways were acquired by means of infrared digitizers interfaced to newly developed software. Ten distinct curves in each of 10 subjects were recorded by synchronous optoelectronic axiography (100 tracings) and by conventional axiography (100 tracings). Usually, two 3-dimensional (3D) light weight sensors are provisionally fixed to the facial surface of a maxillary and mandibular incisor by means of a single orthodontic bracket. To allow for direct comparison of all 100 pairs of curves in this study, the 3D sensors of the optoelectronic system were attached to the bulky double face-bow system of the axiograph. The conformity of tracings (protrusion, opening/closing, mediotrusion, and laterotrusion) was evaluated by means of correlation analysis. Resulting axiographic recordings from both systems were evaluated by 3 experts (dentists, experienced in axiographic investigations, who were blind to the source of the data), focusing on standardized qualitative criteria of the recordings (homogeneity/smoothness, pathway-characteristics, excursion, and left/right-symmetry). After testing for normal distribution of the ratio scaled data (length of pathway, horizontal condylar inclination [HCI], Bennett angle) with the Kolmogoroff-Smirnov test (alpha=.01), axiographic curves were quantitatively compared by means of an intraclass correlation coefficient ([ICC] alpha =.01). The Wilcoxon test (alpha=.01) was used to evaluate equivalence of ordinally scaled values (homogeneity of tracings) and Cohen's Kappa was used to compare excursion and left/right symmetry. RESULTS: High correspondence between curves recorded by conventional and optoelectronic axiography was observed. The mean differences of lengths between the protrusive, opening/closing, and mediotrusive pathways were 0.0 mm, 0.6 mm, and 0.1 mm, respectively. Pathways and values for HCI were found highly correlated (pathways: 95% CI of ICC 0.9776-0.9908; HCI: 95% CI of ICC 0.8641-0.9597). The 95% CIs for differences of pathways, HCI-value, and Bennett angle were -0.1mm/0.3mm, -3.4 degrees/1.9 degrees, and -2.8 degrees/4.8 degrees, respectively. Pathway characteristics also corresponded well (Cohen's Kappa: 0.73 for symmetric and 0.72 for asymmetric movements), 0.77 for left/right symmetry, whereas other characteristics showed less significant correlation (Cohen's Kappa of excursion: 0.21 for symmetric and 0.09 for asymmetric movements, homogeneity: 0.08 for symmetric and 0.15 for asymmetric movements). CONCLUSION: Within the limitations of this study, optoelectronic axiography proved to be an applicable, promising technique, leading to diagnostic interpretations equivalent (with respect to the CIs) to conventional axiography.
机译：问题陈述：当前可用的全景图跟踪系统笨重，笨重，并且会干扰颚的运动。目的：本研究描述了旨在克服常规笨重的基于帧的注册轴画的系统固有问题的光电轴画的发展和临床应用。这项研究的目的是比较新开发的系统和常规轴测图。材料与方法：of突通路的三维记录是通过与新开发的软件连接的红外数字化仪获得的。通过同步光电心动描记法（100次描记）和常规心动描记法（100次描记）记录了10位受试者中每条的10条不同曲线。通常，两个3维（3D）轻型传感器通过单个正畸托架临时固定在上颌和下颌切牙的面部。为了在本研究中直接比较所有100对曲线，将光电系统的3D传感器连接到了轴测仪的笨重双弓系统上。通过相关性分析评估了跟踪的一致性（突出，打开/关闭，中等拉伸和横向拉伸）。由3位专家（牙医，经验丰富，对数据来源​​视而不见的专家）评估了两个系统产生的轴向记录，重点是记录的标准化定性标准（均质性/光滑度，路径特性，偏移和左/右对称）。用Kolmogoroff-Smirnov检验（alpha = .01）测试比例比例数据（路径长度，horizo​​ntal突水平度[HCI]，贝内特角）的正态分布后，通过类内相关系数定量比较轴测曲线（[ICC] alpha = .01）。使用Wilcoxon检验（alpha = .01）来评估常规比例值的等效性（描迹的均匀性），并使用Cohen's Kappa来比较偏移和左右对称性。结果：观察到常规和光电轴测图记录的曲线之间高度对应。伸出，打开/闭合和伸入路径之间的平均长度差分别为0.0 mm，0.6 mm和0.1 mm。发现HCI的途径和值高度相关（途径：ICC的95％CI为0.9776-0.9908; HCI：ICC的95％CI为0.8641-0.9597）。路径差异，HCI值和Bennett角的95％CI分别为-0.1mm / 0.3mm，-3.4度/1.9度和-2.8度/4.8度。路径特征也很好地对应（科恩氏Kappa：对称运动为0.73，非对称运动为0.72），左右对称性为0.77，而其他特征显示的相关性较低（科恩氏运动偏移：对称运动为0.21，非对称运动为0.09，均一性：对称运动为0.08，非对称运动为0.15）。结论：在这项研究的局限性内，光电轴测图学被证明是一种可应用的，有前途的技术，导致诊断解释（相对于CIs）等同于常规轴测图学。

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