Document Classification

Section Type: RESULTS

Text: The surface loss in the nine groups was as following : (1) brush/calcium pyrophosphate : 6. 18 microm (a) ; (2) brush/pumice : 5. 51 microm ; (3) brush/Nupro coarse : 10. 10 microm (b) ; (4) brush/Hawe cleanic : 1. 88 (a, b) ; (5) prophy cup/calcium pyrophosphate 2. 07 (c) ; (6) prophy cup/pumice : 6. 07 microm ; (7) prophy cup/Nupro coarse : 5. 93 microm (c) ; (8) prophy cup/Hawe cleanic : 4. 93 microm (c) ; (9) pasteless prophy cup : 11. 86 microm (c).