I have a small black line on my molar , and it shows no signs of pain or sensitivity . What is it ? What do I do ?
Dentistry : My upper right Rear Molar -LRB- wisdom tooth -RRB- broke about 10 years ago . Only one small piece is left above the gum line . It has never caused any pain and is not loose . Since it has not caused any pain in 10 years , is it ok to not have it extracted ?