But this is one of the places where the differences between your natural teeth and dental implants matters. Dental implants are affixed in the bone. Natural teeth, on the other hand, are encased in bone, but they’re actually secured by periodontal ligaments, soft but tough tissue that has a certain amount of flex to it. This acts as a cushion for the tooth under force.
So, when a dental implant and a tooth support a dental bridge together, the force distributes unevenly. Whenever force is put on the dental bridge, the natural tooth will give slightly because of the ligaments, but the dental implant won’t. This means that the dental implant will take more than its share of the bite force, and excessive bite force can lead to dental implant failure. In addition,there is tension on the dental bridge, trying to flex the hard, inflexible material, which could cause it to break.
And it’s not just the dental implant that might be in trouble. In some situations, the tooth in question might not be up to the task of supporting its side of the bridge. Then it’s best to remove it and replace it with a dental implant, too.