A dental bridge is a type of tooth replacement. Dental bridges are custom-made to fill up all of the space left from one or more missing teeth. In addition to helping your smile look more natural, a dental bridge also makes it easier to bite or chew food. Once you have a bridge installed, you'll need to pay extra attention to your oral hygiene. Bridges require brushing and flossing just like regular teeth, but you also have to remove the bridge and clean underneath it. The typical dental bridge needs to be replaced every five to 10 years.