There may be a fair amount of judgment necessary when determining whether to place porcelain veneers or crowns dental vibrator. For example, your dentist may feel that circumstances dictate that a porcelain veneer needs to be made thicker than normal to cover a larger percentage of a tooth to align it with a neighboring or adjacent tooth. Additionally, more tooth preparation may be required to achieve a desired effect in a severely stained tooth [Figure 8]. Other circumstances may present a sort of compromise between a veneer and a crown — where more than just the face of the tooth needs enhancing. Indeed, porcelain “veneer” restorations have been prescribed where the whole surface of the tooth is “veneered” [Figure 9 and 10]. What Crowns and Veneers Can't Do These techniques cannot fully correct poor tooth position, poor bite relations, or a poor profile. They may, however, correct minor alignment problems, depending upon the individual case. Many situations may first require some form of orthodontic treatment (braces) to move the teeth into proper position — for both function as well as esthetics. Ceramic restorations may serve as an excellent restorative solution, but like most other techniques, they have both advantages and disadvantages Dental Chair. Beginning to See the Light? A talented ceramic artist can sculpt dental porcelain into spectacular tooth imitations that mimic tooth enamel. Properties associated with porcelains include glass-like whiteness and translucence — most important from an optical or visual standpoint. It is these particular nuances that allows light to penetrate and/or scatter, making the restoration life-like. Porcelains are a form of inorganic, non-metallic ceramic material formed by the action of heat. Dental porcelains are made in many colors and shades; they are manufactured in a powder form corresponding to the primary colors of basic tooth structure dental lab supplies australia. These are mixed with water and placed in an oven for “firing” — hence their ceramic nature. Porcelains are built up in layers to mimic the natural translucency, staining and contours of the enamel of teeth. New Ceramic Materials Problems with porcelain restorations in the past have been in those composed of high concentrations of glass particles. They were brittle and had low tensile strength, and like glass, they were prone to fracture. One way of overcoming this has been to incorporate a core or substructure material made out of metal, i.e. cast gold, with porcelain facings. Unfortunately, while strengthening the crown, the metal tends to detract from the glass-like translucence of the porcelain and from its life-like appearance — not so bad for back teeth but not so great for front teeth. Recently, the newest category of all-ceramic crowns make use of an internal ceramic “core” made from “Zirconia” which adds significant strength as well as esthetic beauty. This polycrystalline ceramic core (poly – many, crystalline – a crystal-structure which imparts greater strength) is the same material that forms the basic structure of fake diamonds. CAD-CAM technology. CAD-CAM (Computer Aided Design – Computer Aided Manufacturing) technology is another innovation in dentistry which allows extraordinary accuracy of fit and contour of crown restorations. Using a special wand to scan a tooth that has been modified for a new crown, information is beamed from a computer to a milling machine that sculpts an exact fitting “ceramic core” of the crown Which Is The Oil Mouth Of The Dental High-Speed Handpiece? for more information.. Porcelain is then baked on top of this core to mimic tooth form and color as well as impart its traditional brilliance and translucence. The result of this computer-aided system is a crown composed of a strengthened core which is permanently cemented to the remaining natural tooth. Secrets of Success — Veneers or Crowns? In many instances porcelain veneers and crowns can produce pleasing and excellent results but these two types of dental restorations do have different structural characteristics. Ultimately, the precise terminology is unimportant. The secret to a successful outcome is to know what to use and when to use it. This is the province of the dental professional, who combines knowledge, skill and experience. Whether veneers or crowns are used to enhance your smile, the truth of the matter is that no one should know that you've had anything done, just that you look great!