Table 2:

Types of AEs based on severity and preventability across 2 academic institutions

AE categories	Severity*			Preventability
	E1, E2	G1, G2	F, H, I	AE preventable	AE not preventable	Not classifiable
Allergy/Toxicity/Foreign Body response	1 (1.7%)	0 (0.0%)	0 (0.0%)	1 (1.8%)	0 (0.0%)	0 (0.0%)
Aspiration/Ingestion of Foreign Body	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)
Infections	5 (8.3%)	1 (1.7%)	0 (0.0%)	5 (8.9%)	0 (0.0%)	0 (0.0%)
W-SPPs (Wrong-Site or Wrong-Procedure or Wrong-Patient)	1 (1.7%)	1 (1.7%)	0 (0.0%)	2 (3.6%)	0 (0.0%)	0 (0.0%)
Bleeding	5 (8.3%)	0 (0.0%)	0 (0.0%)	5 (8.9%)	0 (0.0%)	0 (0.0%)
Pain	16 (26.7%)	0 (0.0%)	0 (0.0%)	12 (21.4%)	2 (3.6%)	1 (1.8%)
Hard tissue damage	1 (1.7%)	8 (13.3%)	0 (0.0%)	7 (12.5%)	2 (3.6%)	0 (0.0%)
Soft tissue injury/Inflammation	7 (11.7%)	2 (3.3%)	0 (0.0%)	5 (8.9%)	2 (3.6%)	0 (0.0%)
Nerve injury	9 (15.0%)	1 (1.7%)	0 (0.0%)	7 (12.5%)	3 (5.4%)	0 (0.0%)
Other systemic harm	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)
Other oro-facial harm	0 (0.0%)	2 (3.3%)	0 (0.0%)	1 (1.8%)	0 (0.0%)	1 (1.8%)
Other harm	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)

^*Severity:

E1 (Temporary NOT moderate to severe harm)

E2 (Temporary moderate to severe harm)

F (Transfer to ER)

G1 (Permanent NOT moderate to severe harm)

G2 (Permanent moderate to severe harm)

H (Harm required intervention to sustain life)

I (Death)