Decreased dentin tubules density and reduced thickness of peritubular dentin in hyperbilirubinemia-related green teeth

Decreased dentin tubules density and reduced thickness of peritubular dentin in hyperbilirubinemia-related green teeth

BACKGROUND It is stated anecdotally that patients with liver diseases in childhood who develop green teeth have increased risk for rampant caries, which may be secondary to changes in dental structure. The aim of this study was to test the hypothesis that hyperbilirubinemia affects the dentin morphology of green teeth. MATERIAL AND METHODS Sixteen primary teeth were prepared and divided into ...

Peritubular dentin lacks piezoelectricity.

Dentin is a mesenchymal tissue, and, as such, is based on a collagenous matrix that is reinforced by apatite mineral. Collagen fibrils show piezoelectricity, a phenomenon that is used by piezoresponse force microscopy (PFM) to obtain high-resolution images. We applied PFM to image human dentin with 10-nm resolution, and to test the hypothesis that zones of piezoactivity, indicating the presence...

Peritubular hypercalcified zone of mammalian dentin.

According to FUJITA (1957) and TAKUMA (1960), the structure of the dentinal tubule wall in human dentin has been studied by KOLLIKER, NEUMANN, WALKHOFF, FLEISCHMANN, HANAZAWA, MEYER and ORBAN. Recently, TAKUMA and TSUCHIKURA (1950) found by means of the electron microscope that the dentinal tubules were lined with a hypercalcified area, and designated it as peritubular hypercalcified matrix. Th...

Remaining dentin thickness pdf

Dentin bonding: SEM comparison of the dentin surface in primary and permanent teeth.

The literature suggest differences between primary and permanent teeth regarding the composition and morphology of the dentin. The purpose of this study was to compare the effect of two dentin conditioners on the micromorphology of the dentin surface of primary and permanent teeth. Human extracted and noncarious molars were divided into four groups and conditioned with either 10% phosphoric aci...