What are the two classifications of pellicles?

The two classifications of pellicles are typically considered to be calcified and non-calcified. The pellicle is a thin, acellular film that forms on the tooth surface and plays a significant role in plaque formation. Non-calcified pellicles are essentially protein films that can serve as a medium for bacterial adhesion, whereas calcified pellicles involve the deposition of minerals on the pellicle layer, which may lead to calculus formation.

The other classifications do not accurately represent the fundamental understanding of pellicle types. For instance, staining impacts the nature of the pellicles but isn't a classification by itself. Similarly, the terms hard and soft usually describe the consistency of dental tissues or deposits rather than classifications relating to pellicles. Understanding these classifications can help dental professionals manage oral hygiene effectively and understand plaque dynamics better.