What monomer is commonly used with zinc phosphate cement powders?

Zinc phosphate cement is commonly used in dentistry for various applications, such as luting crowns and other restorations. The primary monomer that is utilized with zinc phosphate cement powders is phosphoric acid. When zinc oxide powder is mixed with phosphoric acid, it creates an exothermic reaction that results in the formation of a hard and durable cement. This cement is known for its strength and adhesive properties.

Phosphoric acid acts as a liquid component that effectively reacts with zinc oxide to produce the desired physical and chemical properties for dental applications. Specifically, it provides an acidic environment which helps to achieve optimal adhesion to the tooth structure and other materials.

The other acids listed in the choices, such as acetic acid, sulfuric acid, and citric acid, do not play this role in the context of zinc phosphate cement formulation. They have different chemical properties and applications in dentistry, but they are not utilized in the preparation of zinc phosphate cement, making phosphoric acid the correct and relevant choice.