短根歯の3つの異なる移動モード下での有限要素解析
Shengnan Lu1, Ting Zhang, Jiajia He
1Department of Stomatology, First Affiliated Hospital of Anhui Medical University. Hefei 230012, Anhui Province, China.
まとめ
短根歯の全体的な後方移動は、最も軽い力と最小限の歯根吸収をもたらした。しかし、短根歯は、特に全体的な後方移動方法において、傾斜と伸長を起こしやすい。
科学分野:
- 歯列矯正学
- 生体力学的解析
- 歯科画像診断
背景:
- 短根歯は、歯列矯正治療において特有の課題をもたらす。
- 後方移動中の力学的力を理解することは、合併症を防ぐために不可欠である。
主な方法:
- 円錐ビームCT(CBCT)スキャンを用いて3Dモデリングを行った。
- 有限要素解析(FEA)により、段階的後方移動と全体的な後方移動をシミュレーションした。
- 変位、応力値、歯根膜における応力分布を調査した。
結論:
- 全体的な後方移動(条件1)は、最も軽い力と最小限の歯根吸収をもたらした。
- 短根歯は、特に全体的な後方移動において、傾斜と伸長を起こしやすい。
関連する概念動画
Tooth Anatomy
2.4K
The human tooth enables us to eat a variety of foods, speak clearly, and even aid in shaping our faces. Teeth are composed of various elements that work together. Here's a detailed look at the anatomy of a human tooth.
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or...
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or...
2.4K
Teeth
1.9K
The formation of teeth, also known as odontogenesis, is a complex process that begins in utero, around the sixth week of embryonic development. There are three stages to this process: the bud stage, the cap stage, and the bell stage.
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin...
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin...
1.9K
Thin-Walled Hollow Shafts
609
In analyzing a thin-walled hollow shaft subjected to torsional loading, a segment with width dx is isolated for examination. Despite its equilibrium state, this segment faces torsional shearing forces at its ends. These forces are quantitatively described by the product of the longitudinal shearing stress on the segment's minor surface and the area of this surface, leading to the concept of shear flow. This shear flow is consistent throughout the structure, indicating a uniform distribution of...
609


