Which of the following dental cements is used as a luting and base cement and is high in strength?

The dental cement that is commonly used as both a luting agent and a base cement, and is recognized for its high strength, is Zinc Phosphate Cement. This type of cement has been traditionally used for its excellent mechanical properties and ability to withstand significant loads.

Zinc phosphate cement is composed of zinc oxide and phosphoric acid, which results in a hard, durable material once set. It provides good bond strength to tooth structures and is often employed in the cementation of crowns, bridges, and other restorative materials.

Other dental cements, such as glass ionomer and resin cements, are also used for luting and bases but may vary in strength and application depending on specific clinical situations. However, for high strength in both roles, zinc phosphate is a preferred choice in many cases.

In summary, if you are looking for a cement that serves effectively as both a luting and base cement with high strength, Zinc Phosphate Cement would be the right option.