Comparative dental anatomy in newborn primates: Cusp mineralization.

ABSTRACT: Previous descriptive work on deciduous dentition of primates has focused disproportionately on great apes and humans. To address this bias in the literature, we studied 131 subadult nonhominoid specimens (including 110 newborns) describing deciduous tooth morphology and assessing maximum hydroxyapatite density (MHD). All specimens were CT scanned at 70 kVp and reconstructed at 20.5-39 μm voxels. Grayscale intensity from scans was converted to hydroxyapatite (HA) density (mg HA/cm³ ) using a linear conversion of grayscale values to calibration standards of known HA density (R² = .99). Using Amira software, mineralized dental tissues were captured by segmenting the tooth cusps first and then capturing the remainder of the teeth at descending thresholds of gray levels. W

SUBMITTER: Paddock K 

PROVIDER: S-EPMC7269855 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature