Are there any cases why an external approach to cheek implants would be used over an internal approach ?
The external approach to cheek implants is performed through a lower eyelid incision. If you were going to have a lower eyelid incision as part of another procedure along with the cheek implants, then it would make sense to insert them in that fashion. However, there are surgeons who prefer the external approach exclusively for the insertion of cheek implants.