intercuspation

noun
in·​ter·​cus·​pa·​tion | \ -ˌkəs-ˈpā-shən How to pronounce intercuspation (audio) \
variants: or intercuspidation \ -​ˌkəs-​pə-​ˈdā-​shən How to pronounce intercuspidation (audio) \

Medical Definition of intercuspation

: the meshing together of cusps of opposing teeth in occlusion