orofacial pain classification?

Question 1

what are the 2 main systems for orofacial pain classification?

Answer 1

international classification of headache disorders edition 3 2018 (ICHD3)
International classification of orofacial pain edition 1 (ICOP)

Question 2

under the ICOP classification, what are the 6 groups of orofacial pain?

Answer 2

1. orofacial pain attributed too disorders of dentoalveoolar and anatomically related structures
2. myofascial orofacial pain
3. TMJ pain
4. orofacial pain attributed to lesion or disease of the cranial nerves
5. orofacial pains resembling presentations of primary headaches
6. idiopathic orofacial pain