Document Classification

Section Type: METHODS

Text: 120 intact caries-free human molars were randomly divided into six groups (n = 20), sealed with Fissurit-F and polymerized using either a conventional halogen unit (Optilux) (Control group) in standard mode (40 seconds @ 600 mW/cm2) ; a very high intensity LED unit (Mini LED) in fast (10 seconds @ 1, 100 mW/cm2) or soft-start mode (pulse mode : ten 1-second flashes @ 1, 100 mW/cm2 ; exponential mode : exponential increase from 0 to 1, 100 mW/cm2 within 10 seconds followed by 10 seconds @ 1, 100 mW/cm2) ; or a conventional LED unit (Elipar Freelight) in standard (40 seconds @ 400 mW/cm2) or exponential mode (exponential increase from 0 to 400mW/cm2 within 12 seconds followed by 28 seconds @ 400 mW/cm2).