Are you missing a tooth that you would like to have replaced? Sometimes people get along just fine with a missing tooth but it can be very bothersome to others. It really depends on where it is in the mouth and how much you use it.
A missing tooth can easily be replaced with something called a bridge. A bridge is similar to a crown where it encases both teeth surrounding the missing tooth with a crown or “cap” as some call it. Those crowns are then attached with a false tooth in-between them thusly “bridging” the gap. The bridge is permanently cemented to your teeth.