Paralysis of Lower Lip After Chin Implant, Is this Temporary?

Having a true weakness of the lip muscle like you describe isn't commonly seen after chin implant placement, but it can occur. This is usually due to stretching or swelling of one of the branches of the facial nerve (marginal mandibular branch) that is responsible for pulling down the lower lip. This swelling should resolve with time, but this can take up to several months.

The  majority of the time this weakness resolves over several months. It is more common when the chin augmenation is performed through the mouth. If present after a year then it may mean it is permanent. Follow up with your plastic surgeon.

I read your concern:

I have seen lower lip weakness in several of my own Chin Implant patients and this has been self-limited, and temporary in my experience. It may last for 6 weeks or longer, and is typically a result of having your marginal mandibular nerve stretched during your surgery. The condition may last as long as 6 months: if you're not recovered by 6 months after your surgery, it may be permanent, but that scenario would be unusual. This may be associated with placing a larger-than-typical implant.

I hope this helps you.

Dr. Joseph

Facial weakness after chin augmentation is almost always a temporary condition caused by stretching or slight injury to the nerve that moves those muscles of the face.  If this does not improve, there are treatments that can be performed, such as Botox injections to the other side.

More than likely your symptom of lower lip weakness is temporary and related to swelling or a "stunned" nerve.  The risk of injury to the facial nerve is quite low.   It may take several weeks for this to improve.