摘要
Ｘ线衍射分析表明，脱矿和再矿化后釉质表层的晶体参数变化主要表现为磷灰石晶胞ａ和ｃ轴的比率变化，这也见于模拟龋齿状态脱矿和再矿化的牙齿切片与完整牙齿的表层釉质。分析还表明，在病损区表层，一部分晶体是新形成的，表现为ａ轴增长而ｃ轴变短，一部分晶体是原有的，无变化，前者较后者更加抗酸溶解并包绕后者，使后者免于溶解。
esults from X-ray diffraction showed significant changes
of crystallinity parameters in surface enamel of hu- man teeeth after
de-and remineralization. The main findings were an increase of ratio
of the two axes,a and c. Further analysis suggested that new
crystals,with the longer a axis and the shorter c axis,deposited
surrounding the original sound crystals and prevented the latter from
dissolution,was the main reason for persistence of an enamel surface
layer during continuous demineralization.
出处
《北京医科大学学报》
CSCD
1995年第2期100-103,共4页
Journal of Peking University(Health Sciences)
关键词
牙釉质
解剖学
组织学
牙
再矿化
晶体学
Headings Dental
enamel/anat
Tooth remineralization
Lens,crystalline
Tooth
demineralization
