Panoramic radiography and cone-beam computed tomography findings in preoperative examination of impacted mandibular third molars

Table 2 Relationship of the variables between DPR and CBCT images

			Variables for DPR images					Total	Chi-square	P value
Variables for CBCT images			Interruption in white line of IAC	Diversion of IAC	Narrowing of IAC	Darkening of roots	Other
Types of IMTM	Type A	n	41	8	8	40	5	102	10.4783	0.233
		%	40.2	7.8	7.8	39.2	4.9	100.0
	Type B	n	32	5	11	20	2	70
		%	45.71	7.14	15.71	28.57	2.86	100.00
	Type C	n	38	12	13	59	4	126
		%	30.16	9.52	10.32	46.83	3.17	100.00
	Total	n	111	25	32	119	11	298
		%	37.25	8.39	10.74	39.93	3.69	100.00
Buccolingual relationship of IAC-IMTM	Buccal	n	21	2	4	21	1	49	11.351	0.499
		%	42.9	4.1	8.2	42.9	2.0	100.0%
	Lingual	n	68	16	22	80	9	195
		%	34.9	8.2	11.3	41.0	4.6	100.0%
	Interradicular	n	5	0	1	7	0	13
		%	38.5	0.0	7.7	53.8	0.0	100.0%
	Inferior	n	17	7	5	11	1	41
		%	41.5	17.1	12.2	26.8	2.4	100.0%
	Total	n	111	25	32	119	11	298
		%	37.2	8.4	10.7	39.9	3.7	100.0%
Position of IAC-IMTM	Contact	n	61	23	27	101	1	213	54.113	0.000^*
		%	28.6	10.8	12.7	47.4	0.5	100.0%
	No contact	n	50	2	5	18	10	85
		%	58.8	2.4	5.9	21.2	11.8	100.0%
	Total	n	111	25	32	119	11	298
		%	37.2	8.4	10.7	39.9	3.7	100.0%
Mandible shape	Type 1	n	46	13	15	62	1	137	13.720	0.089
		%	33.6	9.5	10.9	45.3	0.7	100.0%
	Type 2	n	13	1	4	5	1	24
		%	54.2	4.2	16.7	20.8	4.2	100.0%
	Type 3	n	52	11	13	52	9	137
		%	38.0	8.0	9.5	38.0	6.6	100.0%
	Total	n	111	25	32	119	11	298
		%	37.2	8.4	10.7	39.9	3.7	100.0%

ISSN: 1472-6831