Method 112 children aged from 6 to 8 were tested with their 225 milk tooth and molar in 2001 by Adapting ART technology and followed the tracks for one year.

  • 方法:于2001年选取1120例6岁 ̄8岁儿童,225颗乳磨牙,采用ART技术,跟踪随访1年。

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