What Radical Plato stated is true.
There have been numerous studies published in the New England Journal of Medicine on urine therapy or Urotherapy.
Now, I recommend using a friends, or a family member perhaps, and mixing it with your own at a 3:1 ratio.
The reason for that is to raise the ph level and lower the acidity. I want you to stop brushing for the next 48 hours and only use urine as a mouthwash/rinse after every meal. Again, do not brush your teeth for AT LEAST 48 hours!!!
You want to gargle and rinse for 2-3 minutes and then you may swallow or choose to spit it out. Do NOT wash your mouth out with water or drink anything (unless it's more urine) for at least 2-3 hours. Let the urine work it's magic. It also kills bacteria in the mouth which will keep your breath smelling clean and fresh.
I also recommend drinking plenty of urine throughout the day as well and applying it to the skin (massage) to experience it's full benefits.
Give it a try.