Coronal Polish Certification Practice Test

What specific kind of bacteria is associated with green stain?

1. Pathogenic bacteria

2. Color-producing bacteria

3. Acid-producing bacteria

4. Oral cavity bacteria

The correct answer is: Color-producing bacteria

The association of green stain with color-producing bacteria is well established in dental hygiene. This type of bacteria is capable of producing pigments that can deposit on the tooth surface, leading to the characteristic green discoloration. In the context of dental health, these bacteria often thrive in biofilms and can become prominent in areas of poor oral hygiene, where they contribute to staining. While pathogenic bacteria can be involved in various oral health issues, their primary role is linked to disease processes rather than direct pigment production. Acid-producing bacteria are primarily known for their role in cavity formation by generating acids that demineralize tooth enamel, and while oral cavity bacteria is a broad term that could encompass many different species, it does not specifically indicate those that produce color. Thus, color-producing bacteria is the most precise answer when considering the specific type of bacteria directly responsible for producing a green stain on teeth.