Journal article

Effect of Hydration on the Strain Gradients in Dental Hard Tissues after Heat and Cold Application

Annie Shrestha, Harold H Messer, Anand Asundi, Anil Kishen

JOURNAL OF ENDODONTICS | ELSEVIER SCIENCE INC | Published : 2010

Abstract

INTRODUCTION: This study was aimed to investigate the thermal strain gradients on dental hard tissues to localized heat and cold applications, applied to assess the vitality of pulp. The role of hydration on the thermal strain distribution within the enamel, dentin, and dentino-enamel junction (DEJ) was examined by using a digital moiré interferometry. METHODS: Extracted bovine incisors were prepared, and high-frequency diffraction gratings were replicated on one surface. Heat (120°C-140°C) and cold (-50°C) stimuli were applied on the external surface, and the strain patterns were recorded and analyzed for the first 3 seconds. The specimens were tested under fully hydrated and partially dehy..

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University of Melbourne Researchers