受区域性牙发育不良影响的母牙的微观结构和机械特征
Wenxiang Jiang1, Minjian Shen2, Jian Wang1
1Engineering Research Center for Oral Biomaterials and Devices of Zhejiang Province, Cancer Center of Zhejiang University, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang Provincial Clinical Research Center for Oral Diseases, Zhejiang University School of Medicine, School of Stomatology, Stomatology Hospital, Department of Pediatric Dentistry, Hangzhou, China.
Journal of applied oral science : revista FOB
|January 15, 2026
概括
原始牙的根性牙发育不良 (ROD) 会导致牙和牙的显著异常,导致机械强度降低. 早期检测和监测对于管理这种情况至关重要.
科学领域:
- 儿科牙科 儿科牙科
- 牙科材料科学 牙科材料科学
- 发展生物学 发展生物学
背景情况:
- 根性牙增生症 (ROD) 是一种罕见的发育异常,影响主牙和永久牙.
- ROD呈现出典型的临床和放射特征,影响牙结构和功能.
研究的目的:
- 研究受ROD影响的母牙的微观结构和机械特性.
- 使用先进的分析技术,将受ROD影响的牙与健康的母牙进行比较.
主要方法:
- 临床检查两颗受ROD影响的母牙.
- 使用微计算机断层扫描 (micro-CT),X射线衍射 (XRD),SEM,TEM,EDS和纳米印记进行分析.
- 与无牙控制母牙进行比较.
主要成果:
- ROD牙表现出低化的牙,牙,矿物质密度降低,结晶度较低.
- SEM/TEM揭示了异常的牙结晶包装和不组织的牙原蛋白.
- EDS显示了Ca/P和Mg/Ca比率的变化;纳米印表明了质的硬度和模量减少.
结论:
- 有ROD的母牙显示出显著的微观结构缺陷.
- 这些异常导致受影响牙的机械性能受到损害.
- 早期干预和长期监测对于管理ROD并发症至关重要.
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