. 2022 Jan 23;6:100060. doi: 10.1016/j.yjsbx.2022.100060

Table 1.

Ratio of intertubular dentine to dentine tubule surface area by age and location.

Location	Median ratio of intertubular dentine to dentine tubule lumens (95% CI)
Location	Young	Mature
Shallow Central	29.6 (0.2, 59.0)^BC	76.2 (–20.4, 172.8)
Shallow Peripheral	69.3 (24.8, 113.9)^D	82.1 (–302.0, 466.2)
Deep Central	5.9 (–4.6, 16.4)^A	9.3 (–1.9, 20.4)^AB
Deep Peripheral	71.6 (39.8, 103.3)^D	46.8 (8.7, 84.8)^CD

*Margins sharing a letter show values are not significantly different at a type one error rate of 0.05 while controlling for the field of view.

Model: P-value (Location) = 0.024; P-value (Age) = 0.37; P-value (Location*Age) = 0.38; Model R-square = 0.10.