European Journal of Prosthodontics and Restorative Dentistry

Hardness Changes of Tissue Conditioners in Various Storage Media: An in Vitro Study

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Cover Date

March 2015

Print ISSN

0965-7452

Vol

23

Issue

1

Abstract

doi: 10.1922/EJPRD_1346Ntounis05

Hardness Changes of Tissue Conditioners in Various Storage Media: An in Vitro Study
Athanasios Ntounis, Phophi Kamposiora, George Papavasiliou, Kimon Divaris, Spiros Zinelis

Abstract:
The aim of the present study was to evaluate the effects of storage media on the longitudinal hardness changes of tissue conditioning materials. Four tissue-conditioning materials were used for fabrication of 80 disc-shaped specimens and divided in four groups, stored in four storage media. The specimens underwent artificial ageing corresponding to 30 nights of extra-oral storage. Hardness measurements were obtained at nine intervals between 8 and 240 hours after specimen fabrication. To test the effects of storage media on hardness we employed multivariate modelling (Bonferroni correction; α=0.05). The materials exhibited varying hardness changes, most pronounced when stored in ambient air.
Keywords:
Tissue conditioners, Soft liners, Denture cleansers, Hardness, Shore A