The effect of ethylene glycol analogs on mechanical properties of moist demineralized dentin matrix
Year: 2006
Type: article
Abstract: Objectives: The purpose of this study is to evaluate the effect of ethylene glycol analogs on modulus of elasticity and ultimate tensile strength of moist, demineralized dentin matrix. Methods: Dentin disks 0.5 mrn thick were prepared from mid-coronal dentin of extracted. unerupted, human third molars. 'I' beam and hour-glass shaped specimens were prepared from the disks, the ends protected with nail varnish and the central regions completely demineralized in 0.5M EDTA for 5 days. Ultimate tensile stress (UTS) and low strain modulus of elasticity (E) were determined with specimens immersed for 60 min in distilled water , ethylene glycol , 2-methoxyethanol , and 1,2-dimethoxyethane prior to testing in those same media. Modulus of elasticity was measured on the same specimens in a repeated measures experimental design. The results were analyzed with a one-way ANOVA on ranks, followed by Dunn's test at . Regression analysis examined the relationship between UTS or E and hoy's solubility parameter for hydrogen bonding of each solvent. Results: The UTS of demineralized dentin in water, ethylene glycol, 2-methoxyethanol, and 1,2-dimethoxyethane was 24 (3), 30 (5), 37 (6), and 45 (6) MPa, (SD) N = 10. Low strain E for the same media were 16 (13), 23 (14), 52 (24), and 62 (22) MPa. Regression analysis of UTS vs revealed a significant $(p\;. Solvents with low values may permit new interpeptide H-bonding in collagen that increases its tensile properties. Solvents with high values prevent the development of these new interpeptide H-bonds.
Authors: Kyung-Ha Lee, Young-Gon Cho, Kwang-Won Lee
Institutions: Jeonbuk National University, Chosun University
Language: English
Subfield: Orthodontics
Field: Dentistry
Domain: Health Sciences
Open Access status: hybrid
OpenAlex ID: W1992670651