Even the gentlest sip of a cold drink can send a jolt through our teeth. That familiar sting, long thought to be a side effect of enamel wear, might instead hint at something far more ancient — the ...

Anyone who has ever squirmed through a dental cleaning can tell you how sensitive teeth can be. This sensitivity gives important feedback about temperature, pressure—and yes, pain—as we bite and chew ...

CT scan of the front of a skate, showing the hard, tooth-like denticles on its skin (shown in orange). Credit: Yara Haridy CT scan of the front of a skate, showing the hard, tooth-like denticles on ...