A SEM analysis of the data obtained in different canal portions showed that, in the coronal zone, dentinal tubules had a greater diameter (4.32 μm) than the middle zone (3.74 μm) and the apical zone (1.73 μm).
Moving forward from coronal to apical zone our study shows how the tubular lumen area progressively decreases from 15.47 ± 7.06 μm of the coronal zone to 12.77 ± 10.23 μm of the middle zone, reaching his minimum of 3.033 ± 2.43 μm in the apical zone.
The average number of dentinal tubules (in an area of 1 mm) was similar in coronal zone (46,798 ± 10,644) and apical zone (45,192 ± 10,888), while in the middle zone they were lower in number (30,940 ± 7,651).
The aim of this study is to analyse the root canal dentin going from coronal to apical zone to find the ratio between the intertubular dentin area and the surface occupied by dentin tubules varies.
Tubular distribution does not seem to be regular moving from 46, 798 ± 10, 644 mm to 30, 940 ± 7, 651 mm and to 45, 192 ± 10, 888 mm, respectively, in the coronal, middle, and apical zones.
Evolution of this line intensity over the solar cycles is demonstrated and the relevance of the solar middle-latitude zones in displaying the coronal activity and variability is underlined.
(C ) Schematic diagram of a coronal slice through mouse brain shows the synaptic zone of primary visual cortex (V1) where EM, IHC and Golgi-cox staining analyses were performed.
As the curvature of the posterior condyle in the sagittal plane is smaller than in the weight-bearing zone but is comparable with the coronal plane of the weight-bearing zone of the condyle, the graft in some cases was rotated 90° for a flush fit.
For the right (diseased) breast images prior to treatment, the coronal perimeters are more uneven with elevated property zones in the lower quadrants and increased properties on the breast boundary likely corresponding to the tumor, skin thickening and edema appearing in the MRI, respectively.
Cutometer and ultrascan measurements were conducted at the following approximate positions: for the thigh, 20 cm below the iliac crest bone, 10 cm from the internal edge; for the abdomen, 3 cm from the navel (left or right); and for the brachial zone, 20 cm from the acromion in a coronal cut of the arm, 12 cm internal.
The use of sagittal and/or coronal images is crucial for this differentiation, as compression of the central zone is never continuous to PCa arising in the PZ (Fig. 1c).
