Table 5.

Percentage of remaining chitosan on PMMA specimens after abrasion tests (n = 10).

Percentage of remaining chitosan after 3,000 cycles of abrasion
Test Series	Min	1. Quartile	Median	Mean	3. Quartile	Max
I	69.0	79.7	85.5	85.3	93.2	97.1
II	47.1	80.8	88.2	85.2	95.7	100.0
III	96.9	99.6	99.9	99.5	100.0	100.0
IV	50.6	71.1	82.4	79.6	94.9	98.3
V	90.5	96.9	97.7	97.0	99.8	100.0
VI	92.7	99.6	99.8	98.7	99.9	100.0
VII	90.0	96.4	98.4	97.4	99.7	100.0
Percentage of remaining chitosan after 30,000 cycles of abrasion
Test Series	Min	1. Quartile	Median	Mean	3. Quartile	Max
I	0.0	48.2	55.2	51.7	64.5	68.6
II	3.6	56.9	73.1	66.6	81.4	95.7
III	89.1	96.6	99.0	97.4	99.1	99.8
IV	5.0	13.2	33.6	32.9	49.5	70.1
V	73.5	79.5	92.9	87.6	94.6	95.8
VI	71.4	91.9	98.0	94.1	99.3	100.0
VII	64.9	71.9	81.6	80.3	89.9	91.8