Australian Dental Council (ADC) Test 2026 – 400 Free Practice Questions to Pass the Exam

The primary component of the acquired pellicle is salivary glycoproteins. The acquired pellicle is a thin, proteinaceous film that forms on the surface of teeth shortly after they are cleaned. This structure plays a critical role in dental health. Salivary glycoproteins are derived from saliva and are responsible for the initial coating of the teeth, helping to protect them from demineralization and providing a barrier against harmful bacteria.

These glycoproteins contribute to the pellicle's ability to promote the adhesion of beneficial bacteria while inhibiting the attachment of harmful microbial species, which can lead to dental plaque formation and subsequent caries or periodontal disease. As such, salivary glycoproteins not only form the structural basis of the pellicle but also are integral to maintaining oral health by influencing the microbial composition in the mouth.

The other components mentioned, such as calcium and chloride ions, do play roles in oral health, particularly in the mineralization and demineralization processes, but they are not the primary constituents of the acquired pellicle.