Thanks for the question. I understand your concerns about your profile change after braces treatment because of 4 premolar extraction.
In braces, 4 premolar extraction is normally required for crowding or protrusion (Upper or Lower or Upper & Lower) cases.
1. If you already have nice profile + not much of crowding, then you may be able to expect some change of your profile, but it depends on lip thickness or facial profile like (rectangular or long profile)
But if you have much of crowding, then there would not be much of change in profile as extracted spaces will be used for teeth alignment, which will not give much of shift of front teeth.
2. If you have protruded profile + not much of crowding, profile will be changed at certain amount but profile will be nicer. This is because upper & lower front teeth will be retracted during braces treatment. you would be able to see improvement in profile.
But, if you have much of crowding, then may not be able to see much of change in profile as extracted space will be used for teeth alignment correction not retract the front teeth.
These are simple information about profile changes because of premolar extraction but it really depends on indivisual like soft tissue thickness, teeth size, facial profile and skeletal relationship etc.
Nowadays, TAD (Temporary Anchorage Devices) is useful method for braces treatment to give better outcome & shorten the treatment period. Please feel free to leave any questions if there are.
Warm regards,
Thanks so much.
Ryan (Dr)
