Table 3.

Laser fluorescence score system

Score 1	Laser fluorescence score 0–4, no caries or white opaque lesions
Score 2	Laser fluorescence score 5–10, enamel caries limited to the outer half of the enamel thickness
Score 3	Laser fluorescence score 11–20, enamel caries limited to the inner half of the enamel thickness without obvious spread in the dentine
Score 4	Laser fluorescence score ≥21, caries spread in the dentine