Hi, the black triangles can be due to variety of reasons like gum disease, age, smoking, bone loss, brushing teeth hard or using improper techniques, improper tooth shape etc usually when you do not maintain good oral hygiene these gaps called black triangles get filled with plaque or bacteria build up and when you get a scaling done they are cleaned and appear as black triangles.
Next Steps
Use a soft bristled toothbrush to brush your teeth
Learn proper brushing techniques
Massage your gums daily
Health Tips
There are different lines of treatment for black triangles. We can discuss all of them if you opt for a consultation. Thank you.