You are being supported by the same principles as a dental bridge when you drive across a bridge. Abutments are crowns on the opposite side of a space. They are used to support an artificial tooth called a pontic. Although a bridge can last many years, it is not always strong enough to support missing teeth.
Dental implants are an excellent alternative to traditional bridge abutments. They can reduce the load-bearing strain and make it more comfortable. Implants are placed carefully in the bone to mimic the roots of teeth. Implants can support the same load as natural teeth, but they are lighter than the ones used to. Sometimes, two implants are needed to create a bridge.