[Introduction and application of European Academy of Paediatric Dentistry judgment criteria and scoring system for molar-incisor hypomineralization].

Molar-incisor hypomineralization (MIH) is defined as an enamel mineralization defect caused by systemic factors, which is characterized by demarcated opacities. These opacities are liable to result in brittle hypomineralized enamel breakdown, which expediting the eventual development of cavities, even tooth loss. Early diagnosis and prompt intervention are essential. The MIH scoring system based on the diagnostic criteria of the European Academy of Paediatric Dentistry (EAPD) is internationally recognized. This system is particularly helpful to diagnose and evaluate the MIH, as well as conductive to the performance of epidemiological investigations. This paper gives a presentation on the EAPD judgment criteria and scoring system as well as their applications, based on the current situation of MIH studies and our findings of MIH epidemiological investigation.磨牙-切牙釉质矿化不全（molar-incisor hypomineralization，MIH）是一种临床常见的全身因素引起的牙釉质矿化性缺陷，表现为磨牙和切牙牙釉质颜色改变，牙釉质崩解，易患龋且进展迅速，病损严重者无法保留患牙。早期准确诊断对MIH的防治具有重要意义。基于欧洲儿童牙科学会（European Academy of Paediatric Dentistry，EAPD）诊断标准的评分系统是一种被国际认可的MIH评分系统，该系统不仅可以帮助医师明确诊断MIH，对受累牙进行评价，还可指导流行病学调查的开展，推动MIH研究。本文结合国内外MIH研究现状和本课题组MIH流行病学调查结果，对EAPD诊断标准和评分系统及其应用进行介绍。.