Tooth beyond repair is extracted from the jaw bone. This leads to changes in and around the extracted site. The neighbouring teeth will move into the space created by the missing teeth and also the bone starts receding in the extracted site since there are no biting forces in that area.

This could be avoided by placing an implant. It is as good as a natural tooth, since it retains the bone from recession and functions like a normal tooth in all aspects in the mouth

The most favourable and important advantage of implant is that the implant is placed without the support of adjacent teeth, unlike bridging, where the support giving teeth are reduced all around using special drills and bridge is fixed with the support of adjacent teeth.