Is it possible to fix bone structure with braces. i had four teeth removed for braces and now my profile isn't looking very nice. can it be fixed by wearing braces again?

Braces can help improve alignment and position of teeth, which may enhance your profile to some extent, but they cannot fundamentally change your bone structure. If you're concerned about your facial profile, it may be beneficial to consult with an orthodontist or oral surgeon who can evaluate your specific situation and suggest appropriate treatment options, such as orthodontic appliances or even surgical interventions if necessary.