Does the crypt: tooth ratio in the developing tooth correlate with chronological age in children?—a novel, radiographic, cross-sectional pilot study using ImageJ tools

Egyptian Journal of Forensic Sciences

Table 2 The results of the tests for the reliability of the variable, CTR (N=20)

Variable	n	Mean value	SD	Mean diff.	SD	Dahlberg’s formula value	Paired t test (p value)*	ICC
CTR (1st attempt)	20	2.178	0.922	0.045	0.312	0.21	0.523	0.935
CTR (2nd attempt)	20	2.133	0.803	0.045	0.312	0.21	0.523	0.935

*Significant at p<0.05; CTR crypt to tooth ratio, SD standard deviation, ICC intraclass correlation coefficient