I have a dent on my upper cheek when I smile. What kind filler and how much of it would be needed to resolve this? (photo)

This "dent" may be a dimple, which is muscle related and not really a dent in the skin.  I would suggest using a hyaluronic acid filler like Juvederm or Restylane in the subdermal plane if it is not tethered to muscle.  See an experienced physician injector to get the right examination and recommendation.  All the Best, Alexis Parker MD

Hi Currently, there are a lot of fillers like Sculptra, Restylane Lyft, Voluma and Revanesse that are worth considering for your concern. Sculptra builds up your collagen and work over time while the hyaluronic filler effects are more immediate. Radiesse may look a little stiff considering that the area is affected when your face is mobile.All the best, Justin Harper, M.D.