Table 1 Study design
From: Effect of dentin pretreatment on the resulting abrasive dentin wear
30 bovine permanent incisors | |||||||
Group A (incisors 1 to 15) | Group B (incisors 16 to 30) | ||||||
4 dentin samples (a to d) from each incisor n = 60 | 4 dentin samples (a to d) from each incisor n = 60 | ||||||
A1 n = 15 (samples -a- of the incisors 1 to 15) | A2 n = 15 (Samples -b- of the incisors 1 to 15) | A3 n = 15 (Samples -c- of the incisors 1 to 15) | A4 n = 15 (Samples -d- of the incisors 1 to 15) | B1 n = 15 (Samples -a- of the incisors 16 to 30) | B2 n = 15 (Samples -b- of the incisors 16 to 30) | B3 n = 15 (Samples -c- of the incisors 16 to 30) | B4 n = 15 (Samples -d- of the incisors 16 to 30) |
Pretreatment of the samples as follows: | |||||||
1200 grit | 1200 grit + 2000 grit | 1200 grit + 2000 grit + 4000 grit | 1200 grit + 2000 grit + 4000 grit + 1000 brushing strokes | 1200 grit | 1200 grit + 2000 grit | 1200 grit + 2000 grit + 4000 grit | 1200 grit + 2000 grit + 4000 grit + 1000 brushing strokes |
Recording of baseline profiles | |||||||
Brushing sequence (25 min, 120 strokes/min) | |||||||
RDA-85 Slurry (Sident 2480-1) | RDA-174 Slurry (Zeodent 103) | ||||||
Recording of final profiles | |||||||