Structure of human dentine—I

摘要: Abstract Examination of human dentine by phase contrast microscopy has revealed that the odontoblast process gives rise to large numbers lateral branches. Large branches with a diameter 0·25–0·5μ leave main from all sides at intervals 1.0–2.0μ. Smaller 0.2μ or less arise directly branches, and occur throughout matrix. Both matrix, processes are birefringent when viewed polarizing microscope. The display birefringence colour different reflecting difference in their structure and/or composition. pericanalicular matrix was shown have major orientation right angles long axis dentinal canal. It may also spiral component around refractive index measured an interference values obtained ranged 1.414 1.493, range generally given for cytoplasm. been same use appropriate mounting media. Measurements gave 1·7132–1·8699, indicating its composition distinctly those magnitudes these accounts (1) clarity demonstration microscope, (2) differences seen Dentine sections stained thionin pattern parallel concentric bands, which visible polarization methods. darker approximately 0.5μ width, alternate lighter 1.0–1.5μ width. They appear be produced intimate association between bands collagen