5 yrs ago one of my fillings came out of my tooth and I ignored it eventually my tooth broke in half and over time the toith has broken awau and I only have the root of the tooth in my mouth,it has decayed over tome and at times a horrible taste comes out of it, I know I have to get it surgically cut out but I'm so scard that I'm prolonging it, what health damage am I doing to my body?

Your blood stream is picking up an infection. You mouth is very close to your brain.

I think you can figure out the rest.