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

Table 1 Relationship between DPR and CBCT findings for the number of roots

The number of roots on DPR images		The number of roots on CBCT images			Total	Chi-square	P value
The number of roots on DPR images		1 root	2 roots	3 roots	Total
1 root	n	29	14	1	44	159.579	0.000^*
1 root	%	65.9%	31.8%	2.3%	100.0%
2 roots	n	2	223	28	253
2 roots	%	0.8%	88.1%	11.1%	100.0%
3 roots	n	0	0	1	1
3 roots	%	0.0%	0.0%	100.0%	100.0%
Total	n	31	237	30	298
Total	%	10.4%	79.5%	10.1%	100.0%

ISSN: 1472-6831