A dental implant is essentially a substitute for a natural root and commonly it is screw or cylinder shaped. Each implant is placed into a socket carefully drilled at the precise location of the intended tooth. After Osseointegration, or when the surrounding bone has attached to the implant, a replacement tooth is secured to the top of the implant. The new tooth looks, feels, and performs just like your natural teeth. 

Dental implants can be used in a variety of situations, whether you need to replace a single missing tooth or many teeth. They can even be used to replace a full denture. As anchor points, implants can also securely attach a partial denture or bridge.
With the advent of newer materials, implants are available today as titanium and zirconia, both which provide successful osseointegration to the bone.

Benefits :-
1.help prevent deterioration of the jawbone caused by loss of teeth, so your face retains its natural shape. 
2.As an alternative to bridgework, dental implants eliminate the need to grind down healthy teeth when replacing one or more adjacent teeth. 
3.There is no slipping or movement as there is with dentures. This eliminates some of the key worries of dentures, including poor fit, gum irritation, and pain from exposed nerves.