用微硬度测定仪检测根管牙本质的微硬度。
The roots were sliced and root-dentin microhardness was measured.
目的：了解上下颌第一磨牙牙釉质及牙本质的厚度。
Objective: To measure the thickness of enamel and dentin of the first molars.
这些研究显示DPP在正常牙本质和病理性牙本质的形成中起重要的作用。
Previous studies clearly indicate the importance of DPP in both normal and diseased dentin formation.
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