Dentin Morphology of Root Canal Surface: A Quantitative Evaluation Based on a Scanning Electronic Microscopy Study

Table 2

Observation data (mm² and %) for each root portion.

Portion	Tubular number (mm^2)	Tubular lumen area (m^2)	Surface occupied by tubules (1 mm^2)	Intertubular area (mm^2)	Tubular lumen area/dentinal surface (%)
Apical	45,192 ± 10,888	3.033 ± 2.43	0.14	0.86	13.71%
Middle	30,940 ± 7,651	12.77 ± 10.23	0.40	0.60	39.53%
Coronal	46,798 ± 10,644	15.47 ± 7.06	0.72	0.28	72.42%