My back molar tooth broke a while back but it does not cause me any pain what so every. I noticed several months ago that there was some tissue growing inside. Tonight, I noticed that the tissue is black. This happened a few months ago and I used some of my oral tools and poked it and it started to bleed. A few days later I noticed it was pink again. I noticed tonight that it is black again. I cant afford to go to the dentist right now. What should I do?
Hello, Your description indicates that the tooth is decayed to the point that unhealthy tissue has invaded the tooth. You now most likely have an unrestorable tooth that is infected. The infection is surrounded with hemmoraghic tissue that bleeds easily and a pocket of pus and blood may be released after you poke at the area.  Chat Doctor.  You need to evaluate the tooth with an x-ray to determine if it requires an extraction or can be restored. If a tooth has a fractured section untreated for a long period, sometimes the gum will cover that section and become inflamed, but with tooth restoration will easily heal.  The longer you delay with dental care, the more severe problems occur and less treatment options. Since you are not sensitive, I believe the tooth to be necrotic. The nerve is not alive any longer, but now infection will spread from the tooth. At some point you may experience pain, swelling and pressure sensitivity. Anti-inflammatory medication and rinsing with warm salt water may offer temporary relief. Try not to let debris block the tooth to allow 