What does hot water do to a cavitie?

how can i deal with a caviti without going to the dentist dont have insurance or job, h what does warm watter do to a cavities

EAL,
HOT WATER HAS NO EFFECTON A CAVITY, NEITHER DOES COLD. THE ONLY WAY TO TREAT IT IS TO SEE A DENTIST.
CAN YOURPARENTSOR FRIENDS HELP PAY FOR THE DENTALCARE? IF NOT FIXED A CAVITY WILL ONLY GET WORSE ULTIMATELY LEADING TO POTENTIAL LOSS OF THE TOOTH AND LOTS OF PAIN.

I don't think hot water has anything to do with a cavity. I know when I had one when I was younger it hurt like h***. My dad had to take me to get it pulled because the pain was sooo unbar able. Please get it taking care of before you have to go through what I did.
See if you can get a job that has good dental ins. so it can help out some..if not it might cost you $130.00 out of pocket money or even more if you let it bad enough.