Hey there,
Yes it can be filled to form an esthetic shape and contour.
There are various options that you can go for.
An xray will give us a picture as to which of the options will be a right fit for you.
Options include -
Direct Composite build up
Ceramic Veneers
Crowns - which is the most invasive process
Next Steps
Visit a cosmetic dentist to discuss your options and what your expectations are with your smile and teeth.
Health Tips
Once you get cosmetic treatment, for it to sustain a good amount of time you need to commit to maintaining it as well with good oral hygiene practices.