Hello. Hope you are doing well. Firstly, your concerns need a thorough clinical examination and history taking followed by some xrays before jumping to the treatment options. If your problem is on skeletal level (meaning size of jaws are not proper) along with other problems like Obstructive Sleep Apnoea (problem in breathing while laying down) then you most likely have to undergo surgical treatment. If the problems are at dental level then it can be solved with non-sugical methods. It will be best to visit an Oral and Maxillofacial Surgeon for proper diagnosis and treatment plan.

Now a days many options are available.

Yes, there is treatment for adults also . In today's technological innovation and advances are there in treatment also. So, go ahead and get the treatment done for smile designing.