It is too soon 3 weeks after surgery to assess results and definitely too soon to perform revision surgery.
Chin implant surgery is characterized by swelling around the chin implant, causing a distorted facial appearance. It would be a mistake to reoperate for what is essentially water in the tissues that will go away.
Another consideration is psychological. Patients adapt well to rejuvenation surgery; most of us think we look younger than we actually look (me included!). Rejuvenating the face just reinforces what the patient has known all along. However when the appearance is changed (chin implants, cheek augmentation, breast augmentation), there is a period of adjustment during which patients feel they are not looking at themselves, and interpret this as dissatisfaction with the surgery. These things tend to mellow with time, another reason to wait 6 months for almost all revision surgery.
Brent Moelleken MD FACS
Offices in Beverly Hills and Santa Barbara
Clinical faculty, UCLA