数字和传统制造的模拟模型的真实性比较
Mehran Falahchai1, Mahyar Ezzati2, Amirreza Hendi1
1Department of Prosthodontics, Dental Sciences Research Center, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran.
Clinical and experimental dental research
|February 10, 2026
概括
传统的牙科模型制造在整体工作流程和生产阶段都比数字方法更准确. 这种传统的方法还可以减少坐在椅子上的时间,特别是当牙准备不够时.
科学领域:
- 牙科材料科学 牙科材料科学
- 数字牙科数字牙科
- 牙修复 牙修复 牙修复 牙修复 牙修复
- 审美牙科 审美牙科
背景情况:
- 准确的手术前评估对于实现牙科所需的美学结果至关重要.
- 数字工作流正在进步,但与传统方法相比,它们的真实性需要进一步调查.
- 模型是术前评估和治疗规划的重要工具.
研究的目的:
- 为了比较评估传统制造的模型与数字制造的模型的真实性 (增量和减量).
- 评估整个工作流程的准确性和不同模型制造技术的生产准确性.
主要方法:
- 包括14名需要在上前部进行陶 Veneer 的患者.
- 每位患者制造了三个模型:一个常规模型,一个增量数字模型和一个减量数字模型.
- 模拟器被放置在口内,扫描,并叠加在参考模型和上,以评估准确性.
主要成果:
- 与添加式 (0.60) 和减法 (0.51) 数字技术 (p < 0.001) 相比,传统方法在整个生产过程中显示出明显较低的根平均平方 (RMS) 误差 (0.13).
- 对于生产阶段,常规方法显示了最低的平均RMS (0.22),而添加式 (0.76) 和减法式 (0.73) 数字技术显示了更高的RMS值 (p < 0.001).
- 减法数字方法比增法数字方法显示出更高的真实性.
结论:
- 传统的模型制造在整个工作流程和生产阶段提供了优越的真实性,相比于添加和减去的数字方法.
- 传统方法可以显著减少坐在椅子上的时间,特别是当牙表面不需要处理时.
- 减法数字制造比增法数字制造更准确.
相关概念视频
Sign Convention
3.5K
When analyzing a beam subjected to various loads, it is crucial to understand the internal forces and moments generated within the structure. These internal forces can be broadly classified into normal forces, shear forces, and bending moments. To determine these forces and moments, we use the method of sections and apply a specific sign convention based on their direction and the side of the section being analyzed.
The normal force acts perpendicular to the beam's cross-section and can...
The normal force acts perpendicular to the beam's cross-section and can...
3.5K
The Sense of Self: Reflected Self-Appraisal and Social Comparison
56.1K
According to Charles Cooley, we base our image on what we think other people see (Cooley 1902). We imagine how we must appear to others, then react to this speculation. We don certain clothes, prepare our hair in a particular manner, wear makeup, use cologne, and the like—all with the notion that our presentation of ourselves is going to affect how others perceive us. We expect a certain reaction, and, if lucky, we get the one we desire and feel good about it. But more than that, Cooley...
56.1K
Enolate Mechanism Conventions
2.9K
When a carbonyl compound is treated with a strong base, the α position gets deprotonated to give a resonance-stabilized intermediate called an enolate. Enolates are ambident nucleophiles because they possess two nucleophilic sites that can attack an electrophile owing to the delocalization of the negative charge between the α carbon and oxygen atoms. When the oxygen atom attacks an electrophile, it is called O-attack, whereas electrophilic attack via the α carbon is known as...
2.9K
Multiple Comparison Tests
4.5K
Multiple comparison test, abbreviated as MCT, is a post hoc analysis generally performed after comparing multiple samples with one or more tests. An MCT will help identify a significantly different sample among multiple samples or a factor among multiple factors.
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...
4.5K
Evolutionary Relationships through Genome Comparisons
7.1K
Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
7.1K
Comparison Between Electrical And Gravitational Forces
4.1K
There are four fundamental forces in nature: the gravitational force, the electromagnetic force, the strong nuclear force, and the weak nuclear force. To compare the numerical strengths of the first two, take two particles of the same kind. Since electrons are fundamental particles, they are a good example.
Since both are inverse square law forces, the distance gets canceled when the ratio of the two forces is considered. Instead, the ratio of the electrical and gravitational forces depends on...
Since both are inverse square law forces, the distance gets canceled when the ratio of the two forces is considered. Instead, the ratio of the electrical and gravitational forces depends on...
4.1K


