Crowns and bridges are both fixed prosthetic devices. They are used to cover damaged or weakened teeth or fill gaps where teeth are missing. They can also be used as a cosmetic option to give you a brighter fuller smile without gaps or broken teeth.
Technology advancements have come a long way and laboratory made bridges and crowns are now made to look natural and unnoticeable. They can last up to a lifetime but most current crowns and bridges usually last between 5 and 15 years.