Can I do extraction and implant same time when teeth are infected?

With the anchor teeth of your bridge having an infection, it is ideal to extract the teeth, clean out the infection, and bone graft the areas to have the implants.  In four to six months those sites should be ready to have the implants placed.  You will likely need to wear a removable flipper during this time.  Good luck.  

Sometimes it is possible to place implants into sites infected by a root so long as the bone socket is cleaned thoroughly. However, it all depends on the infection, tooth in question and how things present on a 3D CAT scan image. See your local periodontist, oral surgeon and prosthodontist to assess the level of infection. At times a bone graft is necessary first in the remaining socket after extraction. Then you would wait about 4 months for the bone to heal prior to placing the dental implant. You would wear a provisional flipper partial denture in the interim. 

There are several studies out there in the Journal of Periodontology and the Journal of Oral surgery, oral medicine, oral pathology, and oral radiology (OOOO) showing that this can be done predictably.  Survival rates appear to be in the 92% range with implants being placed into infected sites.  So if you look at the research, the answer is yes this can be done.   The sites must be thoroughly cleaned and all infectious tissue removed.  More than likely, bone grafting will be needed to fill in any bony deficiencies that remain.  This will save you 4-6 months.  I hope this helps.  Shawn Hofkes, DDS

If your tooth is infected it is best to remove the tooth, bone graft and allow it to heal for several months. Placing the implant at a later date will lower the risk of failure of the implant. If the whole process is done in one day there is greater risk of failure due to the infection in the area and you aren't guaranteed good quality bone. If the implant fails due to infec tion in the area you will be back at the beginning of the process.

Depends on your doc and how bad the infection is.  Also depends on what you mean by infection.  If it's a small apical infection resulting from a fractured tooth you might be ok to do everything at once but the risk of doing it that way means a lower success rate of integration.   Do whatever your surgeon wants.  They know your situation best and more importantly their own skills and preferences.