Calcium hydroxide is a low strength base that can be used as a liner, intermediary base or pulp-capping agent.

lass ionomer cements are high strength bases used primarily for permanent cement, as a base, and as a Class V filling material. They are supplied as a powder and a liquid, or as a powder that is mixed with water.

Zinc oxide-eugenol cement (IRM) is a low-strength base used as a temporary cement filling in the event that the patient will return at a later date for a semi-permanent restoration.