皮肤粘性弹性作为最佳面部假肢设计的预测因素,使用4D面部表情建模
Yu Yamada1, Fumi Yoshioka2, Shogo Ozawa3
1Postgraduate student, Department of Removable Prosthodontics, School of Dentistry, Aichi Gakuin University, Nagoya, Japan.
The Journal of prosthetic dentistry
|December 21, 2025
概括
面部假肢的保留取决于皮肤的弹性,而不是粘度. 根据个体皮肤弹性量身定制假肢设计,可以改善面部运动中的稳定性,从而改善患者的治疗结果.
科学领域:
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
- 牙修复 牙修复 牙修复 牙修复 牙修复
背景情况:
- 假面假肢改善了面部缺陷的个人的生活质量.
- 面部假肢的稳定保留,特别是在移动区域,仍然是一个挑战.
- 虽然4D建模增强了适应性,但患者特定的因素,如皮肤粘性弹性对保留的影响尚不清楚.
研究的目的:
- 通过使用4D模型,研究面部皮肤粘性弹性对最佳假肢设计的影响.
- 建立个性化面部假肢制造的客观标准.
- 在面部运动期间增强假肢的功能保留.
主要方法:
- 30名健康的志愿者接受了3D打印的假肢 (30%,50%,70%的微笑表情).
- 通过面部运动期间的标准化"脱落测试"来评估假肢的保留.
- 皮肤弹性和粘度用切口仪测量;统计分析与皮肤特性相关联.
主要成果:
- 平均假肢保留时间为11.55±4.85秒.
- 皮肤弹性在保留组之间显著不同 (F30与F50/F70,P<.001,P=.002).
- 皮肤粘度在不同组之间没有显著差异 (P=.448).
结论:
- 皮肤弹性,而不是粘度,显著影响面部假肢的保留.
- 建议基于弹性水平的最佳4D面部表情模型 (30%为低,50%为中,70%为高).
- 研究结果为个性化假肢设计提供了一个框架,以提高稳定性和患者特定的制造,需要在有缺陷的患者中进行临床验证.
相关概念视频
Facial Feedback Hypothesis
532
Charles Darwin proposed that facial expressions are an evolutionary adaptation for communication. He argued that these expressions are not influenced by culture but are universal across species. For example, a snarling expression with exposed teeth signals a threat in many animals, including humans. Darwin also suggested that displaying an emotion can intensify the feeling. Smiling, for example, could enhance one's sense of happiness. This idea laid the foundation for understanding the role...
532
Muscles for Facial Expressions
4.6K
The craniofacial muscles are a collection of approximately 20 thin skeletal muscles situated beneath the skin of the face and scalp. These muscles, primarily responsible for the vast array of human facial expressions, originate from the bones or fibrous structures of the skull and extend outwards to connect with the skin. While most skeletal muscles in the body are enveloped in thick fascia, facial muscles generally have a more delicate fascial covering, with the buccinator muscle being a...
4.6K
Modeling and Similitude
574
Scaled modeling is a fundamental technique in engineering, enabling the study of large and complex systems by creating smaller, manageable replicas that recreate critical characteristics of the original. In hydrology and civil infrastructure, for example, scaled models of dams help analyze water flow, turbulence, and pressure. This method allows for accurate predictions of real-world behavior within a controlled environment, significantly reducing the cost and time involved in full-scale...
574
Elastin is Responsible for Tissue Elasticity
3.0K
Elastic fiber contains the protein elastin along with lesser amounts of other proteins and glycoproteins. The main property of elastin is that it will return to its original shape after being stretched or compressed. Elastic fibers are prominent in elastic tissues found in skin and the elastic ligaments of the vertebral column.
Ligaments and tendons are made of dense regular connective tissue, but in ligaments not all fibers are parallel. Dense regular elastic tissue contains elastin fibers and...
Ligaments and tendons are made of dense regular connective tissue, but in ligaments not all fibers are parallel. Dense regular elastic tissue contains elastin fibers and...
3.0K
Deformation of Member under Multiple Loadings
423
When a rod is made of different materials or has various cross-sections, it must be divided into parts that meet the necessary conditions for determining the deformation. These parts are each characterized by their internal force, cross-sectional area, length, and modulus of elasticity. These parameters are then used to compute the deformation of the entire rod.
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
423
Assessment of Airway, Skin Color, and Use of Accessory Muscles
1.6K
A thorough assessment of respiratory health is paramount in clinical settings to identify and manage respiratory distress and ensure adequate oxygenation. This article elaborates on the critical aspects of respiratory evaluation, including airway assessment, skin color examination, and the observation of accessory muscle use, which are integral to effectively diagnosing and managing patients with respiratory conditions.
Introduction
The initial evaluation of a patient's respiratory system...
Introduction
The initial evaluation of a patient's respiratory system...
1.6K


