Table 2. Cone shape approach results using the tool polygon (Pol) and oval (Oval). Pulp area (in mm²) at the CEJ level and volume (in mm³) calculation with the measured root length (in mm).

Area	Area Pol	Area Oval	Root length	Vol Pol	Vol Oval
1	22	20	1.55	11.2	10.2
2	29	30.5	1.46	14.1	14.8
3	28	24.5	1.46	13.6	11.9
4	20	9.85	1.51	10.0	4.9
5	21	16	1.04	7.3	5.5
6	16	13.5	1.56	8.3	7.0
7	46	29	1.86	28.6	18.0
8	37	20.5	1.64	20.3	11.2
9	52	41	1.38	24.0	18.9
10	32	26.5	1.63	17.4	14.4
11	30	17	1.28	12.8	7.2
12	34	16	1.38	15.8	7.4
13	32	22	2.10	22.4	15.4
14	28	14	1.71	16.1	8.0
15	42	28.5	1.79	24.9	16.9
16	27	16	1.71	15.4	9.1
17	25	17.5	1.96	16.2	11.3
18	35	25.5	1.47	17.2	12.5
19	58	44.5	1.73	33.9	26.0
20	39	26.5	1.52	19.8	13.4
21	46	24.5	2.17	33.3	17.7
SD	8.7	10.86		7.45	5.2