Analyses of a Cantilever-Beam Based Instrument for Evaluating the Development of Polymerization Stresses
Martin Y. Chiang, Anthony A. Giuseppetti, Joy P. Dunkers, Jing Qian, Sheng Lin-Gibson, Gary E. Schumacher, Joseph M. Antonucci
Analytical and finite element analyses have been performed on a cantilever-beam based methodology (tensometer) for evaluating the development of stresses as the concomitant of constrained polymerization shrinkage. A guideline for designing a tensometer satisfying necessary requirements for the accuracy of evaluation have been provided on the basis of a formula for deducing the polymerization stresses (PS) and the instrument sensitivity to the presence of shrinkage. The result of PS evaluation on a commercial dental composite, using our new tensometer designed according to analyses, gives a right trend in the development of PS. This has demonstrated the importance of beam dimensions and relative rigidity of components in the tensometer system on the accuracy of the evaluation.
, Giuseppetti, A.
, Dunkers, J.
, Qian, J.
, Lin-Gibson, S.
, Schumacher, G.
and Antonucci, J.
Analyses of a Cantilever-Beam Based Instrument for Evaluating the Development of Polymerization Stresses, Dental Materials, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=906870
(Accessed June 24, 2022)