This work regards the digital representation of tangible and intangible dimensions of heritage crafts, towards craft preservation. Based on state-of-the-art digital documentation, knowledge representation and narrative creation approach are presented. Craft presentation methods that use the represented content to provide accurate, intuitive, engaging, and educational ways for HC presentation and appreciation are proposed. The proposed methods aim to contribute to HC preservation, by adding value to the cultural visit, before, and after it.
PurposeRecent modifications in composition, structure, and fabrication methods have led to monolithic zirconia ceramics of superior translucency. However, during aging, intrinsic microstructural features, such as grain boundaries and pores, may affect light scattering and consequently the translucency of zirconia. The aim of this study was to systematically review if hydrothermal aging affects the translucency of monolithic zirconia.Materials and MethodsAn electronic search in Medline and Scopus was conducted to identify the effect of hydrothermal aging on the translucency of zirconia. The search was limited to English‐language publications and in vitro studies. The following search terms were used alone or in combination: “monolithic zirconia,” “full contour zirconia,” “Y‐TZP zirconia,” “tetragonal zirconia,” “cubic zirconia,” “aging,” “hydrothermal aging,” “steam autoclave,” “translucency,” “translucency parameter,” and “contrast ratio.” From the titles found after searching the electronic databases, only 10 articles met the inclusion criteria and were included in this review. The translucency parameter or total transmittance was used to extract data from the studies.ResultsAging reduced the translucency of monolithic zirconia in most of the studies; however, the differences varied according to the brand tested and the microstructure and thickness of the specimens. The thinner specimens presented higher translucency alterations. Although in all studies a change in translucency was recorded, its mean values suggest that the differences are within the acceptability threshold in most cases, independent of the color system used to calculate translucent parameter, so they are clinically undetectable. For longer aging times, beyond the perspective clinical life of the restorations, the change in translucency is higher than the acceptability threshold.ConclusionsThere is a controversy regarding how aging affects the translucency of monolithic zirconia ceramics; however, this may not be clinically important, as in most cases, changes (either decrease or increase) in translucency were within the acceptability thresholds.
Advances in Cultural Heritage (CH) representation and presentation technologies are explored concerning new potentials brought by the gaming industry. These include the use of digitisation technologies for the creation of realistic digital assets, educational gaming concepts, and immersive technologies. In this context, it is shown how the creative sector can exploit these potentials in novel educational and gaming experiences, inspired by CH. The aim is to enhance the way that cultural content is experienced in the digital world, to present, and to valorise intangible dimensions and, ultimately, exploit technological advances to enhance our understanding, appreciation, and preservation of tangible and intangible heritage.
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