Dental implants prevent bone shrinkage and facial collapse from missing teeth.
They do not require crowns on adjacent teeth. To place a dental bridge the teeth next to the missing tooth must be ground down and have crowns placed on them to hold the bridge in place.
A dental implant can look more natural at the gum line. It is more difficult to have a bridge look like it is growing out of the gum.
A dental implant acts and feels like your own tooth.
Advantages to Dental Bridges:
They cost less than dental implants.
If the adjacent teeth need crowns anyway, a bridge may be a good choice.