Is this a gap or black triangle? Very confused about what to do about my front teeth. (Photos)

I would suggest following up with your dentist. His (or her) suggestion to remove your wisdom teeth may have saved you from this predicament. Let them take a look at your front gums as well.Best of luck,James Asaf, DDS

These are both spaces and black triangles. However, my recommended treatment is minor tooth movement. This would need artistic reshaping of the sides of the teeth and not just stripping. The space is too small to be closed by injecting dermal fillers into the papilla. X-ray and periodontal exam are important before starting treatment. Finally, you would need bonded retainers. Another option is bonding followed by bonded retainers. 

one more thing u can notice is ratio of yr teeth is also not right. two central incisors are wide. so good option for u is braces / aligners treatment followed  by IPR of front two teeth . it will correct black triangle  issue and proportion of teeth both.

The cause is multifactorial.Make sure you are not forcefully over flossing. (How many times a day are you flossing?)Gum loss MAY signify bone loss, so you may consider getting a consultation with a Periodontist (Gum specialist), if you notice that your teeth are mobile or shifting. Depending on the position/spacing of the lower teeth, a Hawley retainer can be activated by the Orthodontist, to bring the tooth contacts closer together, potentially helping close the space. Tough to tell with only limited information.As with all information, please consult a local dental professional prior to getting any dental treatment.Hope that helps!

If you are happy with the shapes of your teeth I would recommend ortho to move the teeth to close the black triangle, this may require a little stripping of the teeth to squeeze them together.  Bonding will work, but realize the bonding can stain over time