Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12494/41425
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Title: Effect of aging on the microstructure, hardness and chemical composition of dentin
Author: Montoya C.
Arango Santander, Santiago
Pelaez Vargas, Alejandro
Arola D.
Ossa E.A.
Email autor: alejandro.pelaezv@campusucc.edu.co
Issue Date: 2015
Keywords: adolescent
adult
age
aged
aging
chemistry
dentin
female
hardness
human
in vitro study
male
middle aged
molar tooth
Raman spectrometry
scanning electron microscopy
surface property
ultrastructure
Adolescent
Adult
Age Factors
Aged
Aging
Dentin
Female
Hardness
Humans
In Vitro Techniques
Male
Microscopy
Electron
Scanning
Middle Aged
Molar
Third
Spectrum Analysis
Raman
Surface Properties
Abstract: Objective Understanding the effects of biological aging on human tissues has been a topic of extensive research. With the increase in healthy seniors and quality of life that topic is becoming increasingly important. In this investigation the effects of aging on the microstructure, chemical composition and hardness of human coronal dentin was studied from a comparison of teeth within "young" and "old" age groups. Methods The microstructure of dentin within three regions (i.e., inner, middle and outer) was analyzed using electron and optical microscopy. The mineral-to-collagen ratio in these three regions was estimated using Raman spectroscopy and the hardness was evaluated using microindentation. Results Results showed that there were significant differences in tubule density, tubule diameter and peritubular cuff diameter with depth. Although there was no difference in tubule density and diameter of the tubules between the age groups, there was a significant difference in the occlusion ratio. A significant increase in hardness between young and old patients was found for middle and outer dentin. An increase in mineral-to-collagen ratio from inner to outer dentin was also found for both groups. In old patients, an increase in mineral content was found in outer coronal dentin as a consequence of tubule occlusion. Conclusions An increase in occlusion ratio, hardness, and mineral content was found in the dentin of adult patients with age. This increase is most evident in the outer coronal dentin. © 2015 Elsevier Ltd. All rights reserved.
Type: Artículo
Citation: Montoya C,Arango S,Peláez A,Arola D,Ossa EA. Effect of aging on the microstructure, hardness and chemical composition of dentin. ARCH ORAL BIOL. 2015. 60. (12):p. 1811-1820. .
Other Identifiers: https://doi.org/10.1016/j.fluid.2012.03.014
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85058489415&doi=10.1016%2fj.humimm.2018.12.003&partnerID=40&md5=a0ab8d18facff517c4bacda974867f71
Appears in Collections:Artículos Científicos

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