Which type of stain is most commonly associated with poor oral hygiene and is easily removable with a prophy cup?

The most commonly associated type of stain with poor oral hygiene that is easily removable with a prophy cup is yellow stain. Yellow stains result from the accumulation of plaque and biofilm due to inadequate oral hygiene practices. Over time, if plaque is not effectively removed, it can lead to the deposition of substances that create yellow discoloration on the enamel surface.

Yellow stains are typically superficial and can be removed during routine dental cleanings when using a prophylaxis cup with polishing paste. This is an essential aspect of preventive dental care, as maintaining good oral hygiene can prevent the buildup of plaque and the formation of these stains.

In contrast, other stain types mentioned have different associations or removal characteristics. Green stains may indicate the presence of certain bacteria or may be related to specific habits, while brown tobacco stains require more intensive treatment due to the nature of tobacco use and may not be as easily removed. Black line stains are often linked to specific oral conditions and are more challenging to remove, often requiring more comprehensive cleaning procedures. Thus, yellow stains are particularly notable for their association with poor hygiene and ease of removal.