I have a small lower jaw and my doctor has advice for braces to make a gap for two teeth on both sides to implant. how long it take to get 6 mm gap?

Orthodontist: The only way your question can be answered is by seeing you and doing an evaluation of your teeth and jaw. See an orthodontist about this.

Complete treatment: To create a 6 mm space on each side it requires complete orthodontic treatment. The length typically ranges from 12 - 36 months. Factors include the age, cooperation level, and growth factors of the patient. The complexity of the case may also impact the treatment time. Rec.: consult with orthodontist and oral surgeon or dentist for more accurate information.