Table 5.

Open Challenges for Oral Cancer Diagnosis.

References	Difficulty in Getting Accuracy	Choosing Correct Features	Data Privacy and Confidentiality	Challenges in Deep Learning/Machine Learning	Trustworthy AI
[36]	✓	✓	✓	✓	✓
[131]	×	✓	×	×	✓
[134]	×	✓	✓	×	✓
[139]	✓	✓	×	✓	✓
[209]	✓	✓	×	✓	✓
[225]	✓	✓	✓	✓	✓
[226]	✓	✓	×	✓	✓
[227]	✓	✓	✓	✓	✓