When Getting a Chin Implant is It Better to Do Incision Via the Mouth or Under the Chin?

Placing a chin implant through an incision under the chin is the best way to perform chin augmentation. There is a lower risk of infection, the implant is less likely to migrate and there is no need for a screw.

Not only is infection more likely to occur when the implant is placed through the mouth, the implant tends to move upwards away from where it was originally placed.   

Although both approaches are acceptable, there is greater chance of infection and injury to the chin muscles using the intraoral approach. I prefer the external incision. It is about a one inch incision placed near the chin crease and in most barely perceptible once healing has taken place.

This comes down to training and experience. Clearly the single primary advantage of placing the incision inside the mouth is the advantage of concealing the scar whereas the disadvantage is placing an implant through likely the most contaminated part of the human body with the potential increased risk of infection as well as the possible disinsertion or disruption of the mentalis muscel. The advantage of placing it under the chin is the cleaner anatomic path but the disadvantage of a potentially more visible incision.