Teeth numbering errors produced by the system: for each case, the classification
provided by the software is at the top, the expert annotation is at the bottom. (a)
decayed tooth 47 was misclassified, (b) tooth 17 (severely decayed) was misclassified,
(c) teeth 13, 14 obstructed by a prosthetic device were misclassified, (d) tooth 28
was misclassified probably due to the lack of context (missing neighbouring
teeth).