Table 2.

Instance-level class distribution of the dataset, stratified into training and validation sets

Class	Training Instances	Validation Instances	Total Instances
Crown	1,541	77	1,618
Dental Fillings	5,881	325	6,206
Endodontic Post	632	38	670
Root Canal Treated Tooth	1,400	91	1,491
Bridge	604	22	626
Implant	838	13	851
Total	10,896	566	11,462