Table 1. Radiopacity of the investigated foreign bodies and their surroundings.

	HU
Metal	3863–15363
Glass	540–1740
Wood	50–80
Stone	2200–2900
Acrylic	80–130
Graphite	750–1036
Bakelite	85–170
Bone	80–110
Muscle	55–65
Air	−1024