Authors : C. Stavrianos , L. Vasiliadis , I. Stavrianou , M. Diedrich and P. Kafas
Abstract: The aim of this study, is to evaluate the changes appearing on the pulpal wall of root dentine with age with special reference to the number and diameter of dentinal tubules� openings as well as to the morphology of calcospherites. For this purpose 38 permanent human teeth, 22 premolars and 16 canines, of patients between 9 and 60 years of age, were experimentally fractured. After specific preparation they were studied with Scanning Electron Microscope (SEM). It was assessed that the number and width of dentinal tubules was considerably greater in teeth of younger patients and the highest number of openings and greatest diameter were observed at sides were formation was ongoing. The pulpal surface of dentine of younger patients was relatively smooth and after the removal of organic material and predentin an active front of calcification was observed by means of calcospherites. In teeth of older patients, the pulpal surface of dentine was irregular and instead of an active calcification process, a calcified net of interlacing branches of collagen fibers was observed. Lateral root canals were seen in a greater amount in younger patients. The calcification process inside and around the lateral root canals was intense compared to adjacent sides showing formation of predentine and active front calcification. These findings indicate the significant changes appearing with age on the pulpal surface of root dentine implying changes in dentine permeability.
C. Stavrianos , L. Vasiliadis , I. Stavrianou , M. Diedrich and P. Kafas , 2008. Assessment of Morphological Changes on the Pulpal Wall of Root Dentine During Growth. Research Journal of Medical Sciences, 2: 269-274.