浮出形状角度作为牙周上方牙前牙牙前牙的牙周上方牙组织尺寸的决定因素
The International journal of periodontics & restorative dentistry
|January 26, 2026
概括
牙的出现形状角度 (EPA) 随牙形状和牙特征而变化. 较厚的牙和较平的结构与较低的EPA相关,影响组织高度.
科学领域:
- 牙科解剖学 牙科解剖学
- 牙周病学 牙周病学
- 生物材料是一种生物材料.
背景情况:
- 突出形状角度 (EPA) 是美学牙科的一个关键参数.
- 了解EPA与局部组织特征的关系对于可预测的治疗结果至关重要.
研究的目的:
- 为了研究出现形状角度 (EPA) 与前牙的表型特征之间的关联.
- 探索EPA,牙厚度 (GT),上组织高度 (STH),牙结构 (GA) 和牙形状之间的相关性.
主要方法:
- 使用形束计算机断层扫描 (CBCT) 和标准化口内照片.
- 测量包括EPA,GT,STH,水泥接点-骨峰距离 (CEJ-BC),口舌牙尺寸,GA和牙形状.
- 对100名受试者 (600颗牙) 的数据进行了统计分析 (ANOVA,皮尔森相关性,线性回归).
主要成果:
- 总体平均EPA为14.4°±3.06,牙类型之间存在显著差异.
- 厚的牙部位的EPA显著低于薄的牙部位.
- 与正方形牙和平面GA相比,三角牙和状GA表现出更高的EPA.
- 美国环保署显示,与GT和STH有显著的负相关性.
- 美国环保署预测的STH (p < 0.001).
结论:
- EPA受牙类型,形状,牙厚度和结构的影响.
- 在EPA和牙厚度 (GT) 和上组织高度 (STH) 之间存在显著的反向相关性.
- 这些发现有助于更好地了解牙形态和牙周组织之间的相互作用.
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