Combinatorial characterization of photopolymerizable composites: Effect of filler type and content on properties

Published

March 22, 2009

Author(s)

Li Piin Sung, Aaron M. Forster, Haiqing Hu, Nancy Lin, Sheng Lin-Gibson

Abstract

Multi-component formulations coupled with complex processing conditions govern the final properties of photopolymerizable dental composites. In this study, a single test substrate was fabricated to support multiple formulations with a gradient in degree of conversion (DC), allowing the evaluation of multiple processing conditions and formulations on one specimen. Mechanical properties and damage response were evaluated as a function of filler type/content and irradiation. DC, surface roughness, modulus, hardness, scratch deformation, and cytotoxicity were quantified using techniques including near infrared spectroscopy, laser confocal scanning microscopy, depth sensing indentation, scratch testing, and cell viability. Total filler content, nanofiller, and irradiation time/intensity all affected the final properties, with the dominant factor for improved properties being a higher DC. This combinatorial platform accelerates the screening of dental composites through the direct comparison of properties and processing conditions across the same sample.

Proceedings Title

American Chemical Society Division of Polymer Chemistry|237th | |ACS

Conference Dates

March 22-26, 2009

Conference Location

Salt Lake City, UT, US

Conference Title

Polymer Preprints

Pub Type

Conferences

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Keywords

combinatorial, composite, cytotoxicity, nanoindentation, scratch test

Citation

Sung, L. , Forster, A. , Hu, H. , Lin, N. and Lin-Gibson, S. (2009), Combinatorial characterization of photopolymerizable composites: Effect of filler type and content on properties, American Chemical Society Division of Polymer Chemistry|237th | |ACS, Salt Lake City, UT, US, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=900240 (Accessed October 5, 2024)