Regards I can understand the frustration that chin numbness can cause to a patient. It is caused by trauma to inferior alveolar nerve (right or left) as it emerges out of the jaw bone (Near second premolars) and then called as mental nerve. Please understand that despite common suggestions that it recovers, it takes a long time to reach normality. Instead of approaching remedies for chin numbness, my experienced and humble suggestion is to accept it as a part of your life. It would be great if it improves! But please keep your hopes low. To make it assessable, use a color pencil to mark ares that feel numb. Then take a photograph. Repeat this every month for at least six months. When you compare these monthly photographs you as well as your dentist can analyse if any improvements are happening or not. If the numb areas are decreasing - means the nerve is healing. If increasing or remains the same - no healing is taking place. Braces, especially when attempting to move the 3rd molar can take considerable time. It is a good treatment strategy in experienced hands. It does not have any affect on chin paraesthesia. You could request your dentist to prescribe you a Cone Beam CT scan for the affected portion of the jaw. This will not show the nerve itself, but can identify any ongoing pathologies along the nerve tract.

If your numbness lasts for more than a week, that means  ther is partial paraesthesia. .its coz of close proximity of the nerve to the extracted tooth.   That will recover on its own, it might take weeks to months. U need to timely visit your dentist to have a check on it.

When u say recently do u mean hrs or days.The anaesthetisa works for 4-6 hrs. After that sensation comes back.. However in very rare cases it might take upto a week. If the numbness persists for more than a day do intimate ur dentist once. Secondly the braces treatment doesn't affect ur nerve in anyway.

Braces treatment would not cause paresthesia. If removal of second molar has caused paresthesia then sadly it recovers very slowly as the nerve tissues are very slow to heal.first 6 months are very crucial for recovery,so medications provided by your doctor will fasten healing in this period.. In most of the cases nerve does recover, only in rare cases it won't if the nerve is badly injured in surgery. Luckily it's not the nerve which controls lip movements otherwise it would have been more frustrating. Only Sensations would be altered to some degree.. And yes as the other doctor has mentioned, if it doesn't recover in first 6 months or so then sadly you will have to accept it and go ahead. Good luck.