Table 1.

Linear measurements of root length, crown length, tooth length, root-to-crown ratio, and apical root morphology of teeth seen on CBCT scan

Tooth no.	Root-to-crown ratio determination
	Root length (mm)	Crown length (mm)	Root-to-crown ratio
17	15.6	2.4 (carious)	–
16*	5.2	6.5	0.8*
15	15.9	5.4	2.9
14	14.5	5.6	2.5
13	16	10	1.6
12*	7.8	9.2	0.84*
11*	6.6	10.0	0.66*
21*	6.4	10.3	0.62*
22*	8.7	9.6	0.90*
23	15.9	10.6	1.5
24	16.4	6.0	2.7
25	14.5	6.1	2.37
26*	5.5	6.2	0.89*
27	15.2	3.4 (carious)	–
38	10.6	5.6	1.89
37	14.8	4.3 (carious)	–
36*	5.3	6.7	0.79*
35	16.6	6.2	2.68
34	14.7	6.8	2.16
33	15.2	9.6	1.58
32*	2.5	9.4	0.2*
31*	0.0	9.2	No root formed *
41*	0.0	9.4	No root formed *
42*	0.0	10.4	No root formed *
43	14.8	9.2	1.6
44	15.9	6.3	2.5
45	15.3	6.0	2.55
46*	5.3	6.9	0.76*
47	12.8	4.5	2.8

^(*)Denotes teeth with short root anomaly