intercuspation

[ ĭn′tər-kŭ-spāshən ]

n.

The cusp-to-fossa relationship of the upper and lower posterior teeth to one another.
The interlocking or fitting together of the cusps of opposing teeth.interdigitation
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.