Can you take antibiotics after a dental appointment instead of before?

While many/most surgeon would say this is not needed(as it really isn't for total knee and hip prosthesis either), IF you actually want a benefit, you need to take the abx at least 1 hour prior to dental work. Taking the medication after won't really do much as the horse is already out of the barn.

Hello dear, thanks for your question and provided information as well, you are suposed to take antibiotics before the appointment as suscribed.

You need to take it before.  With tooth extraction, mouth bacteria can enter the blood stream and potentially seed the implant.  The same principle holds true for the antibiotics that are given prior to making an incision for any plastic surgery procedure.  It has to be BEFORE the incision is made.