That's because hydrogen peroxide soaks through the protective outer coating of enamel and into the softer layer of dentin underneath, irritating the nerve-rich dental pulp at the core.
这是因为过氧化氢会渗入釉质的外部保护层并进入牙质下面的较为柔软的一层，刺激神经组织比较多的牙髓。
2
Methods used to screw and form a silver amalgam core, re-porcelain dental restoration.
方法先用螺纹钉和银汞合金形成桩核，再行烤瓷牙修复。
3
The dental polymerizable core build-up material of the separately packed type has satisfactory workability in core build-up operation and gives a cured polymer having excellent mechanical properties.