The aim of this study is to report the diagnostic features, prevalence, mineral content, clinical significance and treatment options of molar incisor hypomineralization(MIH) and pre-eruptive intracoronal lesions(PEIR)...The aim of this study is to report the diagnostic features, prevalence, mineral content, clinical significance and treatment options of molar incisor hypomineralization(MIH) and pre-eruptive intracoronal lesions(PEIR), in order to minimize miss-treatment of primary and permanent teeth in young children.MIH was defined as the occurrence of hypomineralization of one up to four permanent first molars from a systemic origin and frequently associated with affected incisors. PEIR are lesions that are located in the occlusal portion of the crown of unerupted permanent or primary teeth. The prevalence of MIH was reported between 2.5%-40% in the permanent first molars and 0%-21.8% in primary second molars. PEIR was observed in 2%-8% of children, mainly in mandibular second premolars and second and third permanent molars. A number of possible causes for MIH were mentioned, including environmental changes, diet and genetics in prenatal and postnatal periods, but all are questionable. In PEIR, the resorption of the intracoronal dentine begins only after crown development is complete and is caused by giant cells resembling osteoclast observed histologically on the dentine surface close to the pulp. The mineral content in MIH is reduced in comparison to normal enamel and dependent on the severity of the lesion. In PEIR the resorbed surface of enamel showed less mineral content. The hypomineralized enamel in MIH is not suitable for restorations with amalgam or composite materials, and the best material should be based on remineralization material like glass-ionomers. Similar, the resorbed dentin surface in PEIR should be covered by the biocompatible and remineralizing glass-ionomer cement.展开更多
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...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。展开更多
文摘The aim of this study is to report the diagnostic features, prevalence, mineral content, clinical significance and treatment options of molar incisor hypomineralization(MIH) and pre-eruptive intracoronal lesions(PEIR), in order to minimize miss-treatment of primary and permanent teeth in young children.MIH was defined as the occurrence of hypomineralization of one up to four permanent first molars from a systemic origin and frequently associated with affected incisors. PEIR are lesions that are located in the occlusal portion of the crown of unerupted permanent or primary teeth. The prevalence of MIH was reported between 2.5%-40% in the permanent first molars and 0%-21.8% in primary second molars. PEIR was observed in 2%-8% of children, mainly in mandibular second premolars and second and third permanent molars. A number of possible causes for MIH were mentioned, including environmental changes, diet and genetics in prenatal and postnatal periods, but all are questionable. In PEIR, the resorption of the intracoronal dentine begins only after crown development is complete and is caused by giant cells resembling osteoclast observed histologically on the dentine surface close to the pulp. The mineral content in MIH is reduced in comparison to normal enamel and dependent on the severity of the lesion. In PEIR the resorbed surface of enamel showed less mineral content. The hypomineralized enamel in MIH is not suitable for restorations with amalgam or composite materials, and the best material should be based on remineralization material like glass-ionomers. Similar, the resorbed dentin surface in PEIR should be covered by the biocompatible and remineralizing glass-ionomer cement.
文摘磨牙-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。
