Table 1.

Inter-incisor distance achieved using the McIvor gag versus Floor of Mouth Window (FOMW)

		Inter-incisor distance (mm)
Cadaver	Dental status	McIvor gag	FOMW	Difference
1	Edentulous	30	40	+ 10
2	All incisors present	25	30	+ 5
3	Edentulous	38	42	+ 4
4	Upper incisors absent	32	34	+ 2