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首页> 外文学位 >Clinical outcomes of Frankel appliance therapy using high resolution three-dimensional magnetic resonance images.
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Clinical outcomes of Frankel appliance therapy using high resolution three-dimensional magnetic resonance images.

机译：使用高分辨率三维磁共振图像进行Frankel矫治器治疗的临床结果。

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摘要

The advent of high spatial resolution 3D volumetric imaging has led to significant progress in diagnosis, treatment planning, surgical planning and image-guided intervention, and studies of craniofacial anomalies developmental aspects. This dissertation substantiates data collection and quantitative assessment of 3D compensatory changes to skeletal discrepancies, that result from displacement and remodeling of diverse structural counterparts in the craniofacial complex.; The present work assessed the following alterations with Frankel Regulator-II (FR-II) therapy: (1) temporomandibular articular disc position and shape changes; (2) mandibular ramus growth response relative to its developmental equivalents in the craniofacial structure, as assessed in 2D cephalograms; (3) actual developmental and morphologic 3D interrelationships among craniofacial components; and (4) 3D growth vectors at skeletal landmarks.; The results of the first study showed that significant configurational changes toward a normal biconcave shape occurred in the temporomandibular joint discs of treated children with Class II malocclusion, a unique finding suggesting that FR-II therapy at the beginning of the pubertal growth spurt might help prevent internal derangements of TMJs. The second study found that the treated group presented a more forward rami alignment and increased rami vertical dimension relative to the middle cranial fossae and posterior nasomaxilla dimension, using Enlow's counterpart analysis in 2D cephalograms. The third study showed striking statistically significant differences in the graphical display of relative 3D skeletal growth directions when we compared treated to untreated controls with Class II malocclusion and normal occlusion children. The group comparisons in the fourth study revealed highly significant differences of the 3D growth displacement vectors of gonion and pterygomaxillary relative to the other skeletal landmarks.; The novel and generalizable modeling techniques applied in this prospective and systematically controlled study facilitated assessment of differential craniofacial growth and response to treatment. When examining treatment effects, high resolution 3D imaging techniques significantly enhance the biological understanding of how the face actually grows by the regional anatomic structures that directly produce growth. Further applications of such techniques can lead to enormous advances in our diagnostic assessment of patient parameters in craniofacial biology.
机译：高空间分辨率3D体积成像的出现已在诊断，治疗计划，手术计划和图像指导的干预以及颅面畸形发展方面的研究方面取得了重大进展。本论文证实了颅面复合体中各种结构对应物的移位和重塑导致的骨骼差异的3D补偿性变化的数据收集和定量评估。本研究评估了Frankel Regulator-II（FR-II）治疗的以下改变：（1）颞下颌关节盘位置和形状变化; （2）在2D头颅图中评估的相对于其在颅面结构中下颌骨的生长相对于其下颌骨的生长反应; （3）颅面组件之间的实际发育和形态3D相互关系; （4）骨骼界标处的3D生长向量。第一项研究的结果表明，经治疗的II类错牙合儿童的颞下颌关节椎间盘发生了向正常双凹形状的明显构型变化，这一独特发现表明，青春期开始时FR-II治疗可能有助于预防TMJ的内部混乱。第二项研究发现，使用Enlow的2D头影分析，相对于颅中窝和后鼻颌，治疗组的rami排列更向前，并且rami垂直尺寸增加。第三项研究表明，当我们将未经治疗的对照组与II类错牙合和正常牙合患儿进行比较时，相对3D骨骼生长方向的图形显示具有显着的统计学差异。第四项研究中的组比较显示，相对于其他骨骼标志物，gonion和翼状ery肉的3D生长位移向量存在显着差异。在这项前瞻性和系统控制的研究中应用的新颖且可概括的建模技术有助于评估颅面差异性生长和对治疗的反应。在检查治疗效果时，高分辨率3D成像技术通过直接产生生长的区域解剖结构，大大增强了对面部实际生长方式的生物学理解。这种技术的进一步应用可以导致我们在颅面生物学中对患者参数的诊断评估取得巨大进步。

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  • 作者

    Cevidanes, Lucia Helena Soares.;

  • 作者单位

    The University of North Carolina at Chapel Hill.;

  • 授予单位 The University of North Carolina at Chapel Hill.;
  • 学科 Health Sciences Dentistry.
  • 学位 Ph.D.
  • 年度 2003
  • 页码 80 p.
  • 总页数 80
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 口腔科学;
  • 关键词

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