Saliva plays a crucial role in maintaining oral health and is particularly important in the prevention of dental cavities (caries)
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A zirconia crown is a type of dental crown made from zirconium dioxide, a very durable ceramic material that offers excellent strength, longevity, and aesthetics. The process of making and placing a zirconia crown involves several steps
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The grey line you're noticing around the edge of an older dental crown is likely due to the metal base of a porcelain-fused-to-metal (PFM) crown becoming exposed. PFM crowns consist of a metal substructure covered by a layer of porcelain. The grey line typically becomes visible over time for a few reasons, an older crown, a metal crown substructure, gum recession or decay.
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