回复：这里是更全面的资料（说出ADA不愿意讲的话）

http://www2.aap.org/ORALHEALTH/pact/ch6_sect3b.cfm

First, you need to address the dosage question. EPA, NSF and ADA all recognize the importance of floride dosage in drinking water and supplement, and also different source of exposure to floride.  They made recommendation for communities of different drinking water sources.  It is not one solution fits all.

Secondly, you cited a decision set forth in 1994, which is nearly two decades ago.  Pediatric and dental standards advance very quickly. On one hand, you'd like to use ADA's decision to support your view, when it is against your personal belief, you just discredit them.

It is not necessary to cite or imply who and who has a doctoral degree. Most people on the forum are scientifically trained and they should be able to determine for themselves.

所有跟帖： 

• 科学家们，请说中文，好不好。 -用户名被占用了- ♂ (0 bytes) () 10/03/2012 postreply 16:34:35

• 不说了，啥也不说了. 偶去研究Schrodinger's Cat了 -也潜水- ♀ (0 bytes) () 10/03/2012 postreply 16:41:53

• 你是Schrodinger？失敬失敬！ -老忽叔叔- ♂ (0 bytes) () 10/03/2012 postreply 17:42:20

• 我还是爱因斯坦夫人呢 -也潜水- ♀ (0 bytes) () 10/03/2012 postreply 17:46:01

• 别忽悠。大家都知道你不是爱因斯坦夫人。你不会讲德语。 -老忽叔叔- ♂ (0 bytes) () 10/03/2012 postreply 17:53:36

• 既然不会讲德语，那肯定也不是schrodinger了。 -也潜水- ♀ (0 bytes) () 10/03/2012 postreply 18:19:00

• 所以要看最新的哈佛大学的研究成果啊。 -nWAY- ♂ (0 bytes) () 10/03/2012 postreply 17:01:51

• The cited Harvard Study -也潜水- ♀ (493 bytes) () 10/03/2012 postreply 17:33:46

• He would say: fluoride is fluoride. 4 ppm vs 0.7 ppm? who cares! -老忽叔叔- ♂ (0 bytes) () 10/03/2012 postreply 17:37:47

• 在2011年前，美国自来水氟化物“最佳”浓度是4 ppm -nWAY- ♂ (401 bytes) () 10/03/2012 postreply 17:55:10

• 查查资料再胡说吧。拿出政府记录来。靠一批conspiracy theorists的胡说只有你这种猪脑会信。 -老忽叔叔- ♂ (0 bytes) () 10/03/2012 postreply 18:02:07

• MCL is not 最佳浓度，是maximun contaminant level -也潜水- ♀ (245 bytes) () 10/03/2012 postreply 18:08:21

• 其实，即便是0.7 ppm也是有害的，特别是对幼儿 -nWAY- ♂ (268 bytes) () 10/03/2012 postreply 18:47:23

• 到底4ppm是不是最佳浓度？到底是哪一年改成0.7ppm？空口胡说。猪头。 -老忽叔叔- ♂ (0 bytes) () 10/03/2012 postreply 20:50:35