Table 1. Definition and classification system used to identify dental AEs.

AE definition	Physical harm that is moderate or severe due to treatment within a specific time frame
AE type	1. Allergy/toxicity/foreign body response
	2. Aspiration/ingestion of foreign bodies
	3. Infections
	4. Wrong-site, wrong-procedure, and wrong-patient errors
	5. Bleeding
	6. Pain
	7. Hard tissue injury
	8. Soft tissue injury
	9. Nerve injury
	10. Other systemic complications
	11. Other orofacial complications
	12. Other harm
AE severity	E1: temporary minimal harm E2: temporary moderate-to-severe harm G1: permanent minimal harm G2: permanent moderate-to-severe harm

Abbreviation: AE, adverse event.