[儿童永久牙面膜的微硬度和微结构研究]
Qihong Gu1,2, Wenjing Jiang3, Yijing Liu1,2
1Dept. of Pediatric Dentistry, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China.
概括
新出现的永久牙面膜更柔软,更多孔,增加了牙的风险. 随着时间的推移,微硬度和结构完整性得到改善,突显了早期牙损伤预防策略的需要.
科学领域:
- 牙科科学
- 儿童牙科
- 材料科学
背景情况:
- 永久牙面膜在喷发后经历微硬度和微结构的显著变化.
- 了解这些变化对于评估儿童的脏易感性至关重要.
- 幼儿牙仍然是一个重要的公共卫生问题.
研究的目的:
- 研究永久牙面膜在爆发后的不同阶段的微硬度和微结构.
- 为儿童牙提供早期预防策略的数据.
- 为了与喷发时间相关联的质特性.
主要方法:
- 收集了45个前牙和15个未爆发的第三牙.
- 根据喷发时间分组前:0-1年,1-3年和3-5年.
- 测量表面微硬度 (维克斯),微结构 (SEM) 和元素组成 (电子探针).
主要成果:
- 随着喷发时间的延长,乳的微硬度显著增加 (P<0.05).
- 表面孔隙性减少,而表面含量随着时间的推移而增加.
- 喷发后和表面的含量有所降低.
结论:
- 永久牙面膜的微硬度和微结构随着喷发阶段而变化.
- 在喷发后的第一年内,乳对最容易受到伤害.
- 强烈建议强调儿童牙的早期预防措施.
相关概念视频
01:15Teeth
672
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...
672
01:21Tooth Anatomy
1.0K
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...
1.0K