硬组织是生物体内通过生物矿化而形成的组织(如骨骼、牙齿等)。是介于无机物和有机物之间的特殊物质。
随着鼻子和下巴的硬组织和软组织的快速生长，嘴唇变得相对后缩。
With the faster growth of both hard and soft tissues of nose and chin, the lips become comparatively retrusive.
目的研究青少年拔牙矫治对颅面部硬组织的影响。
Objective To investigate the hard tissue impaction of orthodontic extraction treatment with extraction.
目的研究牙体硬组织表面电位与骨生长改建的关系。
Objective To investigate the influence of surface potentials of tooth hard tissue on bone remodeling.
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