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相关概念视频

One-Way ANOVA: Equal Sample Sizes01:15

One-Way ANOVA: Equal Sample Sizes

One-Way ANOVA can be performed on three or more samples with equal or unequal sample sizes. When one-way ANOVA is performed on two datasets with samples of equal sizes, it can be easily observed that the computed F statistic is highly sensitive to the sample mean.
Different sample means can result in different values for the variance estimate: variance between samples. This is because the variance between samples is calculated as the product of the sample size and the variance between the...
Multiple Comparison Tests01:13

Multiple Comparison Tests

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...
Randomized Experiments01:13

Randomized Experiments

The randomization process involves assigning study participants randomly to experimental or control groups based on their probability of being equally assigned. Randomization is meant to eliminate selection bias and balance known and unknown confounding factors so that the control group is similar to the treatment group as much as possible. A computer program and a random number generator can be used to assign participants to groups in a way that minimizes bias.
Simple randomization
Simple...
Structural Classification of Joints01:20

Structural Classification of Joints

Joints, also known as articulations, are classified based on their structural characteristics, i.e., based on whether the articulating surfaces of the adjacent bones are directly connected by fibrous connective tissue or cartilage, or whether the articulating surfaces contact each other within a fluid-filled joint cavity. These differences serve to divide the joints of the body into three structural classifications.
A fibrous joint is where the adjacent bones are united by fibrous connective...
Bioequivalence Experimental Study Designs: Completely Randomized and Randomized Block Designs01:20

Bioequivalence Experimental Study Designs: Completely Randomized and Randomized Block Designs

Bioequivalence experimental study designs are crucial methodologies used in evaluating and comparing the bioavailability of different drug products. These designs are categorized into various types: completely randomized, randomized block, repeated measures, cross and carry-over, and Latin square designs.Completely randomized designs involve randomly allocating treatments to all subjects participating in the experiment. This allocation is achieved by assigning unique random numbers to subjects...
Bioequivalence Experimental Study Designs: Repeated Measures, Cross-Over, Carry-Over, and Latin Square Designs01:15

Bioequivalence Experimental Study Designs: Repeated Measures, Cross-Over, Carry-Over, and Latin Square Designs

Bioequivalence experimental study designs play a pivotal role in testing the effectiveness of various treatments. Key among these are the repeated measures, cross-over, carry-over, and Latin square designs. In the repeated measures design, each subject receives all treatments, allowing for temporal comparisons. This type of design is useful in reducing variability but requires careful planning to avoid bias.The cross-over design, an economical method, involves sequential administration of...

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相关实验视频

Updated: Jun 30, 2026

An Improved Mechanical Testing Method to Assess Bone-implant Anchorage
11:51

An Improved Mechanical Testing Method to Assess Bone-implant Anchorage

Published on: February 10, 2014

由不同宏观结构的植入物支持的全弧假肢:一个多中心随机对照试验.

Ana Carolina Monachini Marcantonio1, Guilherme José Pimentel Lopes de Oliveira2, Paulo Afonso Tassi3

  • 1Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Univ. Est. Paulista/UNESP, Araraquara, Brazil.

Clinical implant dentistry and related research
|October 3, 2024
PubMed
概括
此摘要是机器生成的。

牙植入物宏观结构没有影响全门下假肢即时加载的临床性能或生存率. 穿孔三角线 (CT) 的圆柱体和结合线 (TST) 的圆柱体缩植入物都表现出可预测的结果.

关键词:
植入物设计 植入物设计 植入物设计植入物支持的康复疗法骨质整合 骨质整合整体的牙修复.

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科学领域:

  • 牙科植入物学 牙科植入物学
  • 生物材料科学 生物材料科学
  • 牙修复 牙修复 牙修复 牙修复 牙修复

背景情况:

  • 具有水友表面的牙植入物对于骨质整合至关重要.
  • 植入物宏观结构设计影响主要稳定性和长期临床结果.
  • 评估不同的宏观结构对于优化即时加载协议至关重要.

研究的目的:

  • 为了比较两个水友牙科植入物宏观结构的临床性能:带有穿孔三角线 (CT) 的圆柱体和带有组合线 (TST) 的圆柱体.
  • 评估存活率,初级和二级稳定性,边缘骨水平变化,以及植入周边临床参数.
  • 确定两种类型的植入物适合于立即加载全门下假肢的适用性.

主要方法:

  • 一个多中心,分口,单盲,随机对照试验.
  • 30名患者在无牙下中接受了CT和TST植入物.
  • 通过插入扭矩和共振频率分析 (RFA) 测量初级稳定性;在24个月内评估临床参数和RFA;通过X射线评估边缘骨水平变化.

主要成果:

  • 28名患者完成了为期2年的随访.
  • CT的生存率为99.16%,TST植入器的生存率为100%.
  • 在边缘骨水平变化或其他临床参数方面,CT和TST植入物之间没有发现显著差异.

结论:

  • 植入物宏观结构 (CT与TST) 没有影响生存率,稳定性,边缘骨损失或植入周围健康.
  • 这两种植入物设计都适合立即加载全门下假肢.
  • 这些发现支持这些水友植入物的可预测性使用,无论评估的宏观结构如何.