The cause of green stain on teeth is believed to be:

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Multiple Choice

The cause of green stain on teeth is believed to be:

Green stain is produced when chromogenic bacteria on the enamel cuticle produce pigmented substances that become incorporated into the dental plaque on the tooth surface. This creates a greenish discoloration, most often seen on the facial surfaces of the anterior teeth in children with suboptimal oral hygiene. The enamel cuticle (nasmyth’s membrane) provides the initial pellicle for bacterial colonization, making this bacterial pigment the primary driver of the stain. Other options don’t fit the typical mechanism or appearance: pigments from green tea can stain but aren’t the usual cause of this clinical finding; iron deposition can cause greenish stains but is less characteristic as the primary etiology; fluorosis causes white to brown mottling from enamel hypomineralization, not a green stain.

Green stain is produced when chromogenic bacteria on the enamel cuticle produce pigmented substances that become incorporated into the dental plaque on the tooth surface. This creates a greenish discoloration, most often seen on the facial surfaces of the anterior teeth in children with suboptimal oral hygiene. The enamel cuticle (nasmyth’s membrane) provides the initial pellicle for bacterial colonization, making this bacterial pigment the primary driver of the stain. Other options don’t fit the typical mechanism or appearance: pigments from green tea can stain but aren’t the usual cause of this clinical finding; iron deposition can cause greenish stains but is less characteristic as the primary etiology; fluorosis causes white to brown mottling from enamel hypomineralization, not a green stain.

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