Some people lose teeth in the back of the mouth. This is typically caused by gum infection (periodontitis) or by teeth cracking due to previous fillings.
In order to prevent bone loss and malposition of the teeth and jaw, a gap involving several teeth should be closed rapidly not only from the functional aspect but also from the medical aspect. The individual situation determines the number of implants used.
A major advantage of implant-borne bridges is that the healthy neighbouring teeth do not have to be ground.