| 释义 |
cementum 英/ s??ment?m / 美/ s??ment?m / - 1
医药科学 牙骨质 They suggested that the potentials wasmuch higher hi crown surface than in the root; enamel surface had positive electricity and can be considered as anode, while the cementum had negative electricity and can be considered as cathode. 研究表明，牙齿硬组织具有方向恒定的表面电位：牙冠表面(牙釉质)相对于牙根表面(牙骨质)电位高；牙釉质表面带正电，相当于正极，牙骨质表面带负电，相当于负极。
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