A bridge is usually used where there are fewer teeth to replace, or when the missing teeth are only on one side of the mouth. Bridges are usually made of a precious metal base.
If the bridge will show, porcelain is then bonded to the base. Sometimes, there are other non-precious metals used in the base for strength.
There are also new bridges made entirely of a special type of strong porcelain.
You should replace missing teeth for a number of reasons. Your appearance is one reason. Another is that the gap left by a missing tooth can mean greater strain is put on the teeth at either side.
A gap can also mean your ‘bite’ is affected, because the teeth next to the space can lean into the gap and alter the way the upper and lower teeth bite together. This can then lead to food getting packed into the gap, which causes both decay and gum disease.
A fixed bridge is made by putting crowns on the teeth at either side of the space, and then joining these crowns together by placing a false tooth in the space. This is all made in the laboratory and then cemented into place with special adhesives.
Another option is an adhesive bridge. This has wings that are bonded to the back of the supporting teeth with very little drilling involved.
Be guided by your dentist. They will know the condition of your remaining teeth and will be able to advise you on your individual situation.