The toothlike structures represent a step toward bioengineered replacements for dental implants, say researchers behind the ...

Of course, where dinosaurs were large, diverse, and intimidating, the first mammals were very small, rat-like creatures scurrying ... “Yet since the 1980s, the perplexing tooth shape seen ...

The first step for researchers was to drill holes in two rat molars, exposing the interior of the tooth underneath. They exposed dentin, which is the harder-than-bone but softer-than-enamel tissue ...