Figure 2 | Scientific Reports

Figure 2

From: Growth and development of the third permanent molar in Paranthropus robustus from Swartkrans, South Africa

Figure 2

Transmitted light micrograph (TLM) of daily dentine increments in the apical root dentine of the palatal root of SK 835 (left image). A SXRF image of Ca concentration of the dentine in the same general region. The blue line is ~ 160 µm long and shows the transect represented in the plot of Ca concentration (from top to bottom) against distance (µm). Error bars associated with each datapoint represent SD. Across more than 30 incremental markings, Ca concentration fluctuated between 410,000 and 430,000 ppm but broader zones of lower Ca concentration spanned daily increments in some regions. (300 × 300 µm2, 17.0 keV, 0.25 µm, 10 ms, scan time 4.5 h).

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