The share of health expenses that a beneficiary must pay, including the deductibles, copayments, coinsurance, and charges over the amount reimbursed by the dental benefit plan.
A surface of a posterior tooth or occlusion rim that is intended to make contact with an opposing occlusal surface. (The Journal of Prosthodontic Dentistry; The Glossary of Prosthodontic Terms; July 2005, page 57)