Why would often tooth bleeding?

Why would often tooth bleeding?

Question:

Gender: female
Age: 47
History: it has been a long time 23 years.
Description: get up every disease is a tooth blood. What is this? How to check has treatment?

Treatment:

Check whether the first suggestion has thrombocytopenia and note if fruits and vegetables could eat little lack of vitamin c may. Must pay attention to the teeth and whether such cause periodontitis.