What type of staining is more difficult to remove than green stain?

Intrinsic stains are more challenging to remove than green stains because they originate from within the tooth structure itself. These stains occur due to factors such as dietary choices, medications, or developmental conditions and are embedded in the dental enamel and dentin. As a result, they often require professional intervention, such as tooth whitening procedures or restorative treatments, for effective removal.

Green stains, typically associated with poor oral hygiene, are surface-level extrinsic stains that can often be removed easily through regular brushing and professional cleanings. While extrinsic stains can vary in persistence, intrinsic stains are generally more tenacious due to their deeper location within the tooth's structure.

In comparison, brown and black stains are considered extrinsic and can vary in how difficult they are to remove, generally being less challenging compared to intrinsic stains. This distinction reinforces the idea that intrinsic stains require more intensive treatment strategies for effective management.