The interdental plate refers to the bone-filled mesial-distal region between the teeth.
[1] The word "interdental" is a combination of "inter" + "dental" (meaning "between the teeth") which originated in approximately 1870.
[3] Its presence in Archaeopteryx, an extinct avialan, resulted in the proposal of the dinosaur-bird connection.
[citation needed] The term can also be used to refer to a manufactured object designed to be placed or worn between the teeth.
An example would be a dental prosthetic designed to prevent contact between the teeth while the wearer is sleeping.