There is a nerve which comes out of your mandble (jaw bone) which can be irritated or injured when performing chin implant surgery. This nerve provides sensation to one half of the lower lip and chin.
Generally, it is relatively rare to injure the nerve permanently. More often than not, the nerve is stretched or compressed and may shut down for 10 days to 3 weeks (called a neuropraxia) and is similar to what happens when your foot falls asleep. As the nerve recovers (usually around 10 days-3 weeks) it becomes very excitable and causes a "pins & needles" or shooting electrical sensation like when your foot wakes up or when hitting your funny bone. These are called dysesthesias and may last for 3-6 weeks. This is the probably what is occurring in your particular situation.
Rarely the edge of the implant may irritate or pinch the nerve and certain movements may cause pain. In this rare instance the implant may need to be repositioned but that is not likely the case.
In any event, seek you surgeon's advice and give it some time for the nerves to settle down and be less excitable.
I hope this helps!
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