green stain

green stain

a deposit, produced by chromogenic bacteria, found on the cervicolabial portions of the teeth, usually in children.
See also: acquired pellicle.

green stain

(grēn stān)
Such discoloration or deposit on the gingival half of the labial surfaces of the maxillary anterior teeth, usually in children. Caused by chromogenic bacteria or orally inhaling dust containing copper and nickel.
References in classic literature ?
and I gave it such a hearty kiss that my nose and chin were smudged into one green stain, and still I did not care.
I was standing in the same mysterious tangle of damp little paths that had always been just there; they curled away on either side among the shrubs, with the brown tracks of recent footsteps in the centre of their green stains, just as they did in my day.
She observed green stains of moss on the steps of the terrace.
Items,Sodium dihydrogen orthophosphate ( Sigma / Merck/ Himedia),Disodium hydrogen orthophosphate (Sigma / Merck/ Himedia),Sodium thjoride ( Sigma / Merck/ Himedia),Tween 20 ( Sigma / Merck/ Himedia),Polyethylene Glycol 6C00 ( Sigma / Merck/ Himedia) ,Brilliant green stain powder (Sigma / Merck/ Himedia),Methyl red Indicator (Sigma / Merck/ Himedia),Citric acid (Sigma / Merck/ Himedia),Disodium hydrogen orthophosphate ( Sigma / Merck/ Himedia),Sulfuric acid (Molecular Grade)( Sigma / Merck/ Himedia)
The basin was empty, water dried away, leaving a powdery green stain.
The chromogen is a two-component system that produces a green stain in the presence of horseradish peroxidase (HRP).
and noticed a big green stain on what was to have been slice No 4.
There's a tiny, a negligible, green stain on my shirt.
Luckily my costume made me feel quite good although it wasn't the most flattering: brown leather skirt with a huge green stain and a brown top with only one strap.
After brief incubation with SYTOX Green stain, the nucleic acids of dead cells fluoresce bright green when excited with the 488-nm spectral line of the argon-ion laser.