"Owain" wrote in message
...
No. Apart from the *warm* water being more likely to have bacterial or
other contamination, the warm water will soften the bristles of your
toothbrush, which means they will be less effective against plaque and gum
disease, and all your teeth will fall out of your bleeding septic
gingivae.

Ewwwwwwww Owain! You certainly have a way with words