Dental liners are dental materials that provide additional protection for the health and well-being of a tooth being restored by providing a thin barrier that protects the pulpal tissue from irritation caused by physical, mechanical, chemical and biologic element. Dental cements are hard, brittle materials formed by mixing powder and liquid together and are used for a variety of dental and orthodontic applications, including use as luting agents, pulp-protecting agents or cavity-lining material.