In Dental Bridges, Can 4 Abutment Teeth Be Enough for 6 Pontic Teeth?

What you describe is a pretty long bridge, even with double abutments. In the past, that would have been your only option other than a partial denture. The problem with long bridges is if one of the teeth fails, the entire bridge fails and needs to be replaced. Today you also have the option of dental implants. With implants, there can be either shorter bridges, or each tooth can be replaced by it's own implant. In this way, if something fails, you don't have to start over. The first question with dental implants is whether or not you have enough bone. Check with your dentist or an oral surgeon to see if you are a good candidate.

I would be very hesitant to place a long span bridge as you stated in your question. The excess forces of eating would put excessive stress on your remaining teeth. I do agree with the other doctors concerning losing one of the supporting teeth would cause the bridge to fail. With such a long span, you are risking causing those abutment teeth to fail sooner, with catastrophic results. I would discuss all options with your dentist. Today dental implants are the treatment of choice in your situation, if your bone can support them.

I would seek the advice of a prosthodontist.  You have advanced dental needs so get the help of a dentist who has experience.

You can look into copings on the permanent teeth that fit under a super structure to replace all your teeth.  You should also talk about using Implants to replace the long span of missing teeth and leaving the good teeth alone.

There are all sorts of options so do your home work.