Abstract
The anatomy of human teeth reflects its usage. Spatially resolved X-ray scattering permits quantitative studies of the characteristic arrangement of the anisotropic calcium phosphate crystallites and the collagen fibers within the hard tissues of the crown. The present study summarizes the distinctive nanometer-sized anatomical features of the tooth hard tissues including their interface taking advantage of spatially resolved synchrotron radiation-based small-angle X-ray scattering. The comparison of slices from eight teeth indicates a long-range organization of tooth nanostructures.
Highlights
Quality of life implicates proper nutrition presuming longterm oral health, which is associated with the number of teeth in the dentition [1]
Human tooth crowns consist of dentin as supporting core, which is composed of highly mineralized peri-tubular dentin surrounded by less mineralized inter-tubular dentin [5]
3.1 Microanatomy of the Tooth Revealed by Scanning small-angle X-ray scattering measurements (SAXS)
Summary
Quality of life implicates proper nutrition presuming longterm oral health, which is associated with the number of teeth in the dentition [1]. Teeth are a limiting life factor, as they are necessary for nutrition. Teeth are subject to high wear and mechanical loads resulting from biting forces of approximately 500 N and biting pressures of up to 34 MPa [3] for decades. E.g. bone, remodeling does not occur in human teeth with the exception of relatively minor secondary dentin formation [4]. Enamel is hard and brittle, whereas dentin is much tougher and less stiff. The DEJ exhibits remarkable mechanical properties transferring the loads from enamel to dentin [15]
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