Hi.
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain a dark spot above the root of the front left tooth seems to be most probably due to either an
abscess of
cyst formation and in chronic or long standing cases the tooth can be pain free..
It can also be an opening of incisive canal if it is not exactly above the tooth..
So my suggestion is to consult an Oral Physician or an Endodontist and get your
x ray re-checked and even x rays can be taken by changing angulations of x rays..
In case if there is an abscess or cyst formation then
root canal treatment is the best appropriate option..
You can also send me your x rays by asking a question by clicking "Ask me a question" button on my profile..
I will evaluate it and advise you more appropriately..
Hope this information helps..
Regards.
Dr.Honey Nandwani Arora..