Dear practo user Any history of trauma to incisor. Consult through chat box for definite diagnosis and treatment planning.

The blackish hue is due to very thin nature of your enamel structure of teeth. Bite hard food with caution. Little blackish stains present are mostly due to water quality at your area may be.

It seems that you have extrinsic stains on your teeth though you are brushing teeth twice a day still some bacteria which are chromogenic in nature gets mixed with other metabolic products like coffee or tea...so they can cause discolouration of your teeth. There is no any toothpaste or toothbrush by which you can remove this discoloration but by brushing you can maintain your oral hygiene.

You require cleaning of your teeth (scaling) ,visit your dentist and get it done and deposition of plaque and stains happens with improper oral hygiene (wrong brushing tech. And also with caffeine ).At certain point your brushing will not help and only it can be removed by dentist using tools ,it is good to visit ur dentist regularly for checkup and cleaning for maintaining good health of ur teeth and gums,and also I feel there is a discolouration in ur upper front tooth which might be bcoz of tooth injury at times and u don’t realised ,kindly get a radiograph for that particular tooth to make sure every thing is ok ,in case of injury there might be inferction reaching to the root of the tooth making the tooth dead n discoloured and May create pain n more infection

Scaling is second options first change yours habit of brushing don’t go rough and hard through it second do u have any gastric problem if yes than contact that branch first

Just do scaling will resolve the issue