What are the best treatment options for upper lip protrusion due to fat tissue around the lips? (photo)

Many patients are keen to treat only the teeth with the worst perceived alignment (in your case, the lower incisors only). It is a misconception that one jaw treatments are easier than treating all the teeth comprehensively, unless the misalignment is extremely mild (only involving 1 or 2 teeth, that are very close to ideal alignment). At the end of treatment even for both jaws, you WILL still have an overbite, since this is considered a normal feature that has functional benefits.

In order to decide which method would most effective, we would need to assess and treat the cause of the protrusion. If it is due to protruding upper teeth which are flaring out and causing the lip to come forward, braces or Invisalign treatment would be ideal to reduce the protrusion. There may be a possibility that extractions of some teeth may be required to provide some space for the upper front teeth to move back into. Sometimes, it may be due to the imbalance of the upper and lower jaws.