Dental - All on 4 implants - existing implants?

It really depends on how the implants have been placed. The All on 4 (TM) requires a certain configuration of implant placement.



Inquire with your dentist i am certain they will be able to help you



Best of luck

It is very hard to say without completing an evaluation of your mouth to see how the previous implant were placed, where they are located and the quality of implant that was used. Typically, I will say that previous implants can be utilized. However, check with your dentist and ask for a full consultation.  

That really depends on the type of dental implants that were placed previously, as well as whether bone ridge reduction has to take place. This is a method of hiding the transition line of where the prosthesis meets the natural gum tissue. If your implants do not allow for enough space for the All on 4 prosthesis materials or are in a position that would make the case an aesthetic failure, then the implants would most likely have to be removed which is not uncommon for an experienced All on 4 surgeon. 

If those implants were correctly placed and have good bone levels they can be used. You would need to change components for the all-on-4 system.  You may need to have  an additional implant depending on the position of them

If those implants were correctly placed and have good bone levels they can be used. You would need to change components for the all-on-4 system.

None of your implants should really have to ever been removed. They can always be made dormant if they dont need to be involved in the new treatment plan. However, we have great success in usually re-engaging all the existing implants 

Good luck

Upgrading or replacing all on four treatment is common, and if the location and health of the existing implants are acceptable, all that is needed is a new bridge/restoration.  A deutsch removable bridge is often the best upgrade/replacement option.