What is a cold water extraction?

Ask a junkie. They usually hang out on street corners.

It's when you strip opiates of a drug that prevents them from being used recreationally. For example, Vicodin contains hydrocodone and acetaminophen. Hydrocodone is the opiate and acetaminophen...

yes should take cold not hot on the day of tooth extraction

It depends on where it's coming from. There is no cooling system connected to most cold water taps, so the temperature never drops below that of the source.

Lack of heat energy in the surrounding area to warm it up.