Left lower second molar (PA839) (o: occlusal, B or b: buccal, M or m: mesial, l: lingual, d: distal. I and II: The occlusal (I) and buccal (II) views of the dentine surface reconstructed from micro-CT scanning.

<p>Dotted lines indicate the Cusp 6 and 7 on the occlusal surfaces and the protostylid on the buccal surfaces of the crown. I and II are not scaled.