Being a dentist doesn't make you an expert in the effects of water flouridation on the human body. And your singular opinion on the matter doesn't negate the decades of empirical evidence, and comprehensive research that the scientific consensus is based on. You're making an argument from authority—an established logical fallacy. Science is based on a body of peer-reviewed research and data, not the opinions or beliefs of someone with claimed expertise. And you know that.  

 jackass didn't even watch the vid, and can't cite his own sources.  goes ad hominem instead.  8 years of training in chemistry, biology, and oral physiology makes one pretty much a damn expert in everything mouth related including fluoride.  Hell, that's the definition of expert. 

 You need to take a moment to go learn what an ad hominen is, because nothing I've said meets the definition. You, on the other hand, have engaged in nothing but ad hominens and personal attacks since sliding into the discussion. Go ahead, resume your petty name-calling. I'm sure it will get you far.  

 Mute/block > move on.