This is a very important question, and one that truly is frequently asked. Implants and bridges both have the same end goal in mind: helping your smile look complete and beautiful. However, the methods in which this is accomplished is very different between these two treatments.
Implants and bridges are recommended when a tooth extraction has resulted in a missing space in your smile. The alternative to implants and bridges is to leave the space as it is, resulting in a gap in your smile. Bridges are two or more crowns for the teeth on either side of the gap and a false tooth/teeth in between, filling in the gap and making your smile full again. The downside of bridges, however, is that the two adjacent teeth will have to be shaved down in order for the crowns to rest on top.
Implants, on the other hand, are false teeth that are placed directly into the jawbone, without causing any damage or shaving down any other teeth. For this reason, implants are the preferred method of replacing teeth, for either cosmetic or functional uses. Dental implants have a success rate of about 98%.