可以的。 儿童三岁起就应该每年检查一次牙齿。我的孩子现在4岁，已洗过两次。也是牙齿上有黑色的东西。牙医洗掉了。 我怀疑是水的问题，而非缺钙。自打我们搬到上海，我和老公及宝宝都在牙齿上发现有黑色的东西。 牙医洗掉后过一段时间又出来了。.

这是我google的结果:

"The American Academy of Pediatrics recommends that you take your child to visit the dentist for the first time at around the age of 12 months. At this stage, the dentist will be able to diagnose problems or potential problems that your pediatrician may not have been able to notice. Most dentists recommend that you begin a regular regimen of visits and cleanings at the age of 2 years. "

Source:  http://www.thelaboroflove.com/ar ... st-visit-a-dentist/.