Relevant factors of posterior mandible lingual plate perforation during immediate implant placement: a virtual implant placement study using CBCT

Table 1 The number of cases with D_IL < 0 mm, D_IL ≤ 1 mm, or D_IL ≤ 2 mm in different molar sites

Implant size	Distance threshold	First molar					Second molar
Implant size	Distance threshold	C-type	P-type	U-type	Total	Percent A (%)	C-type	P-type	U-type	Total	Percent A (%)
		40	34	26	100		22	8	51	81
	≤ 2 mm	0	0	8	8	100.0	0	2	36	38	94.7
⌀ = 4.1 mm	≤ 1 mm	0	0	5	5	100.0	0	0	21	21	100.0
	< 0 mm	0	0	2	2	100.0	0	0	13	13	100.0
Percent B (%)		0.0	0.0	30.8	8.0		0.0	25.0	70.6	46.9
		40	34	26	100		22	8	51	81
	≤ 2 mm	1	1	10	12	83.3	2	2	39	43	90.7
⌀ = 4.8 mm	≤ 1 mm	0	0	7	7	100.0	0	0	31	31	100.0
	< 0 mm	0	0	2	2	100.0	0	0	18	18	100.0
Percent B (%)		0.0	0.0	38.5	12.0		9.1	25.0	76.5	53.1

Percent A, the number of cases with D_IL < corresponding threshold distance in U-type subjects/the number of cases with D_IL < corresponding threshold distance in total subjects
Percent B, the number of cases with D_IL ≤ 2 mm in C/P/U-type subjects/the number of all the C/P/U-type subjects

ISSN: 1472-6831