在抽取空间关闭的第一阶段评估大和关节运动:多层次分析
Luiz Gonzaga Gandini Júnior1, Patricia Pigato Schneider1, Ki Beom Kim2
1Universidade Estadual Paulista (UNESP), School of Dentistry, Department of Orthodontics (Araraquara/SP, Brazil).
Dental press journal of orthodontics
|September 20, 2023
概括
大牙收缩显示出更快的初始牙运动,尖端比顶端移动更多. 第一个月后,牙的移动速度变得不变,不会加速或减速.
科学领域:
- ортодонтика 和 牙科 生物力学
- 面外科手术 面外科手术
背景情况:
- 了解牙运动机制对于有效的正牙治疗至关重要.
- 狗的收缩是抽取空间关闭的一个关键阶段,影响整体治疗结果.
研究的目的:
- 分析和比较尾和顶部运动的尾犬和第一个牙在收缩期间.
- 评估牙运动的速度,特别是寻找加速或减速模式.
主要方法:
- 25名患者通过使用-封闭卷轴弹进行了上犬收缩.
- 在多个时间点 (T0,T1,T3,T5,T7个月) 进行斜脑图以进行分析.
- 用多级程序和统计测试 (学生的t测试,ANOVA) 来分析运动模式.
主要成果:
- 狗牙和牙尖端的水平移位比各自的顶部更大.
- 水平移动没有遵循二次曲线,表明没有显著的加速或减速.
- 最初的收缩阶段显示出更高的运动速度,一个月后稳定了下来.
结论:
- 大牙收缩不涉及随着时间的推移牙运动的显著加速或减速.
- 起初牙的移动更加明显,尖端显示出比顶端更大的位移.
- 在收缩的最初一个月后,观察到一个恒定的,较慢的运动速度.
相关概念视频
01:09Functional Classification of Joints
Functional Classification of Joints
The functional classification of joints is determined by the amount of mobility between the adjacent bones. Joints are functionally classified as a synarthrosis or immobile joint, an amphiarthrosis or slightly moveable joint, or as a diarthrosis, a freely moveable joint. Fibrous and cartilaginous joints can be functionally classified as either synarthroses or amphiarthroses, whereas all synovial joints are classified as diarthroses.
Synarthrosis
An immobile...
The functional classification of joints is determined by the amount of mobility between the adjacent bones. Joints are functionally classified as a synarthrosis or immobile joint, an amphiarthrosis or slightly moveable joint, or as a diarthrosis, a freely moveable joint. Fibrous and cartilaginous joints can be functionally classified as either synarthroses or amphiarthroses, whereas all synovial joints are classified as diarthroses.
Synarthrosis
An immobile...
01:20Structural 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...
A fibrous joint is where the adjacent bones are united by fibrous connective...