White Fillings for Restoring Back Teeth
Today people are aware that back teeth are very noticeable when we talk and especially so when we laugh. Everyone wants natural looking white teeth. Seeing dark unsightly areas of metal can detract from what otherwise might be a perfect set of teeth. If this is your concern, relax. Now we have available several options to correct this. In the case of small areas of decay or replacement of fillings that are not overly large, directly placed bonded tooth colored composite resin fillings can make a tooth look like new.
In 1955 Dr. Michael Buoncore demonstrated that an acrylic resin could be bonded to a tooth whose enamel has been roughened or etched with a weak acid. This resin placement today is commonly referred to as a sealant in today’s terminology.
Tooth colored composite resin filling material is composed of long chain carbon molecules linked by small molecules called monomers in a process referred to as polymerization. The resulting product is called a polymer. This was originally described to Bowen in 1965 and was often referred to as Bowen’s formula, chemically known as bisphenol glucidyl methycrylate (BIS-GMA). Dispersed within the resin polymer are inert crystals of quartz or silicone dioxide which give this hard material its strength and fracture toughness. The size variations and compactness of the quartz crystals are responsible for strength variability, and light refraction index which dictates how closely the material can mimic a natural tooth. Polishability of the material as well as its resistance to breakdown and staining are influenced by the size, shape, and the quantity of the filler material. Today, after four decades of refinement dentist have an array of tooth colored filled resin materials to choose from so that different materials can be placed that are more appropriate for one tooth’s location and appearance than another’s.
As back teeth receive a lot of heavy biting forces, large cavities and replacement of large old fillings could require the use of a porcelain ceramic or laboratory made resin ceramic inlay, which have greater strength than directly placed composite resin fillings. While this approach requires two dental visits, the results can dramatically improve the health, strength, and attractiveness of back teeth. Natural white teeth help you to exude confidence when you smile wide.