Which substance enhances the attachment of calculus to teeth?

The acquired pellicle is a thin film composed primarily of proteins and glycoproteins that forms on the surface of the teeth shortly after they are exposed to saliva. This pellicle plays a crucial role in oral health and is significant in the context of calculus formation.

When the pellicle forms, it serves as a substrate for bacteria to adhere to, which encourages the development of dental plaque. Over time, plaque can mineralize and form calculus (tartar). This process indicates that the presence of the acquired pellicle is essential for initiation of calculus attachment and thus contributes to its buildup on the teeth.

Other options, such as enamel and saliva, have different roles in oral health. Enamel is the hard outer surface of teeth that protects against decay but does not itself enhance attachment of calculus. Saliva helps in the formation of the pellicle and contains minerals that can aid in remineralization but does not directly promote calculus attachment. Dental plaque, although it is associated with calculus formation, is not a substance that enhances the attachment itself; rather, it is the result of bacteria adhering to the acquired pellicle. Therefore, the acquired pellicle is the correct answer as it directly influences the initial attachment of calculus