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本研究采用体外培养的人牙周膜细胞，观察微量元素锌对细胞增殖、分化的影响。结果表明：适量浓度的锌可以显著促进细胞的增殖及DNA合成，提高碱性磷酸酶活性。提示：对处于生长发育期儿童，适量补锌也许有利于牙周组织的重建及新骨的形成。
In this study, human periodontal ligament cells cultured in vitro were used to observe the effect of trace element zinc on cell proliferation and differentiation. The results showed that: appropriate concentration of zinc can significantly promote cell proliferation and DNA synthesis, improve alkaline phosphatase activity. Tip: In the growth and development of children, appropriate amount of zinc may be conducive to the reconstruction of periodontal tissue and the formation of new bone.