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Zinc phosphate was the very first dental cement to appear on the dental marketplace and is seen as the “standard” for other dental cements to be compared to. The many uses of this cement include permanent cementation of crowns, orthodontic appliances, intraoral splints, inlays, post systems, and fixed partial dentures.
The "graded" zirconia crown has a darker cervical area consisting of tetragonal zirconia, a main tooth color in the buccal area, and a translucent incisal edge consisting of cubic zirconia. The only thing a dental technician has to do is to use the proper height of the zirconia block so that the crown fits in all the different color zones.
Zinc polycarboxylate is adherent to tooth structure such as enamel and dentine, but has weak or no bond with gold and porcelain. This presents limited use when it comes to luting gold or porcelain crowns. However, zinc polycarboxylate bonds to non-precious metal alloys that have been increasingly used in porcelain fused to metal (PFM) crowns. [23]
The use of gold as a restorative material for the production of inlays and onlays is fading due to the increase in usage of more aesthetically pleasing tooth coloured materials. Gold has many advantages as a restorative material, including high strength and ductility, making it ideal to withstand the masticatory forces put upon the teeth.
Crown to root ratio is the distance from the occlusal/incisal surface of the tooth to the alveolar crest in relation to the length of root within the bone. The minimum ratio of crown to root is considered to be 1:1, although the most favourable is a crown:root of 2:3. As the proportion of tooth supported by bone decreases, the lever effect ...
Estimated value: $25,000 As another part of the original “Sweet 16” lineup, this model features a stunning chrome body with a translucent paint overlay, creating a mirror-like effect.
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