Hello dear , hope you are doing well , so as per your issue you need to tell avout why did you had extraction, is it for any braces / orthodontic treatment ??
There is no such procedure as reversed extraction .. if you have space than you can go for few other optios to cover up the space , i.e, implant , fpd.
For your information dear these all tooth after the complete procedure look pretty natural , even no one can distinguish that ..
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So if you want you can further consult me for more information
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Thank you