PubMed · 1289555
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S Clark. 1992. Spark erosion technology.. https://pubmed.ncbi.nlm.nih.gov/1289555/
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Glass-ionomer cements offer considerable advantages in certain areas over other restorative materials. These result from their cariostatic properties, their inherent dimensional stability and their adhesive properties both to enamel and to dentine. However, because they derive from silicate cements they are prone to desiccation and require protection during the setting phase of the material. This article describes the relationship between the setting time and finishing. The effects of various types of finishing on the surface of the restorative material are also discussed.
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This study compared the finishes on dental porcelain polished with four different polishing paste systems with oven reglazing and with a porcelain adjustment kit without a polishing paste. The polished/reglazed samples were rated according to quality of finish by independent observers and by scanning electron microscopy. On the basis of visual examination, two of the polishing paste systems tested were found to produce a surface equal to or better than oven glazing. On the basis of SEM examination, oven glazing was found to produce a better surface than the other polishing methods. Not all porcelain polishing systems produce a surface comparable to oven-glazed porcelain, and porcelain polishing systems should be chosen carefully.