Crowns:

A dental crown is a tooth-shaped “cap” that is placed over a tooth to cover the tooth to restore its shape and size, strength, and improve its appearance. The crowns, when cemented into place, fully encase the entire visible portion of a tooth.

Bridges:

Bridges are a set of natural-looking prosthetic teeth that span across the gap in your bite. The bridge attaches to the existing teeth on either side of the gap by using crowns.