Table 3.

LTT results

Material	Nonreactive	Mild	Moderate	High
Bulk
Cobalt-chrome alloy	123 (91.1%)	8 (5.9%)	4 (3.0%)	0 (0.0%)
Cobalt*	134 (99.3%)	1 (0.7%)	0 (0.0%)	0 (0.0%)
Chromium*	127 (94.1%)	6 (4.4%)	2 (1.5%)	0 (0.0%)
Molybdenum*	132 (97.8%)	2 (1.5%)	1 (0.7%)	0 (0.0%)
Porous coating
Titanium alloy	109 (80.7%)	25 (18.5%)	1 (0.7%)	0 (0.0%)
Vanadium*	125 (92.6%)	8 (5.9%)	2 (1.5%)	0 (0.0%)
Aluminum*	127 (94.1%)	5 (3.7%)	3 (2.2%)	0 (0.0%)
Other
Iron*	125 (92.6%)	8 (5.9%)	1 (0.7%)	1 (0.7%)
Nickel*	83 (61.5%)	17 (12.6%)	10 (7.4%)	25 (18.5%)
Zirconium*	121 (89%)	12 (8.9%)	1 (0.7%)	1 (0.7%)
Cement monomer	123 (91.1%)	11 (8.1%)	1 (0.7%)	0 (0.0%)

^*Highest available concentration