How to Tell if There is Nerve Damage After a Chin Implant Causes Numbness?

Complications and side effects are very uncommon with chin augmentation. However, there is a small degree of risk ,.. The most likely side effect is altered sensation in the chin and lower jaw, which may be temporary or permanent depending on the extent of the surgery. A plastic surgeon will be able to tell you if you are at particular risk for this type of side effect at time of consultation. In general the longer the numbness or lack of movement the more likely it is to be permanent, especially after a year and therefore it would be unlikely that your sensation would return after 5 years

It is unlikely to have an improvement in the numbness at this point in time. On occasion a large implant can press on the Mental nerve causing numbness. It really needs to be removed right away to give much of a chance for recovery. Keep in mind that many surgical procedures cosmetic and otherwise do result in changes in skin sensation. I think at this point if you are happy with the augmentation of your chin its best to keep the implant in place .

I would have to say that if it has been 5 years and you still have numbness, then the nevrves probably have some permanent damage to them from the implant itself.  If the implant has been pushing on those nereves this entire time, it would be pretty rare for the sensation to return just by removing the chin implant.  The pressure on the nerves has been going on for too long to expect and big recovery in sensation.

The implant itself is probably pressing on a nerve creating numbness. The only way to know for certain would be to remove the implant and see if the numbness goes away. There is no other test to determine whether any other type of nerve damage is present.

I wish you did not wait 5 years on the numbness.

Probably the numbness is due to direct injury of the mental nerve, or pressure on the nerve from the implant or stretch  of the nerve due to the implant, I do dout that removal of the implant will reverse the process, however The implant should be removed by an expert Plastic Surgeon and if possible explore the nerve, remove all scarring around the nerve and look at it .