3 ms·
Teeth themselves maybe, but that's kind of like saying a drill bit is inanimate without moving parts.
by dalbasal 9y ago
Teeth themselves maybe, but that's kind of like saying a drill bit is inanimate without moving parts.
- jstanley 9y agoBut it's not the jaw that fails... it's the teeth, or the tooth-jaw interface. Neither of which have any moving parts!
- jessaustin 9y agoDrill bits break much more often than drills themselves do.
- PeterisP 9y agoThe tooth-food or tooth-tooth interaction "counts" as a moving part - it gets friction, it gets all kinds of forces/stress applied, exactly as the interaction between moving parts in a mechanism.