Dental Fillings
Dental fillings are used to repair damage to the structure of a tooth or teeth. Structural damage can be caused as a result of tooth decay, wear or trauma. After the removal of a problematic tooth structure, the tooth is restored with one of several filling materials. For example, nano-hybrid composite combines new revolutionary technology, beautiful esthetic, and sustained wear and durability. Tooth-colored fillings are made of composite resin and serve to fill cavities just like silver amalgam fillings. However, tooth-colored fillings are matched to the color of your teeth and are virtually invisible. Tooth-colored fillings have become more popular over the years. As the availability of tooth-colored fillings has increased and the possible dangers associated with amalgam fillings have been publicized, more and more patients are having their cavities filled with beautifully white, tooth-colored fillings. When a new cavity needs filling, the vast majority of patients now choose tooth-colored composite fillings. Many patients also opt for the removal of their amalgam fillings as well. These patients want to enhance their cosmetic appearance by ridding their mouths of unsightly silver fillings and replacing them with tooth-colored composite fillings. This simple procedure is an easy way to make a big difference in your smile. Dental inlays and onlays are restorations used to repair rear teeth that have a mild to moderate amount of decay. They can also be used to restore teeth that are cracked or fractured if the damage is not severe enough to require a dental crown. Inlays and onlays are usually made from porcelain, composite resin, and gold. Because they can be created from tooth-colored materials, inlays and onlays are often used to replace metal fillings for patients who desire a more natural looking smile. Your dentist will work with you to determine which material is appropriate for you.
What is a Filling?
A filling is a way to restore a tooth damaged by decay back to its normal function and shape. When a dentist gives you a filling, he or she first removes the decayed tooth material, cleans the affected area, and then fills the cleaned out cavity with a filling material.
By closing off spaces where bacteria can enter, a filling also helps prevent further decay. Materials used for fillings include gold, porcelain, a composite resin (tooth-colored fillings), and an amalgam (an alloy of mercury, silver, copper, tin and sometimes zinc).
Which Type of Filling is Best?
No one type of filling is best for everyone. What's right for you will be determined by the extent of the repair, whether you have allergies to certain materials, where in your mouth the filling is needed, and the cost. Considerations for different materials include:
Gold fillings are made to order in a laboratory and then cemented into place. Gold inlays are well tolerated by gum tissues, and may last more than 20 years. For these reasons, many authorities consider gold the best filling material. However, it is often the most expensive choice and requires multiple visits.
Amalgam (silver) fillings are resistant to wear and relatively inexpensive. However, due to their dark color, they are more noticeable than porcelain or composite restorations and are not usually used in very visible areas, such as front teeth.
Composite (plastic) resins are matched to be the same color as your teeth and therefore used where a natural appearance is desired. The ingredients are mixed and placed directly into the cavity, where they harden. Composites may not be the ideal material for large fillings as they may chip or wear over time. They can also become stained from coffee, tea or tobacco, and do not last as long as other types of fillings generally from three to 10 years.
Porcelain fillings are called inlays or onlays and are produced to order in a lab and then bonded to the tooth. They can be matched to the color of the tooth and resist staining. A porcelain restoration generally covers most of the tooth. Their cost is similar to gold.
If decay or a fracture has damaged a large portion of the tooth, a crown, or cap, may be recommended. Decay that has reached the nerve may be treated in two ways: through root canal therapy (in which nerve damaged nerve is removed) or through a procedure called pulp capping (which attempts to keep the nerve alive).
What Happens When You get a Filling?
If your dentist decides to fill a cavity, he or she will first remove the decay and clean the affected area. The cleaned-out cavity will then be filled with any of the variety of materials described above.
How Do I Know if I Need a Filling?
Only your dentist can detect whether you have a cavity that needs to be filled. During a check-up, your dentist will use a small mirror to examine the surfaces of each tooth.
Anything that looks abnormal will then be closely checked with special instruments. Your dentist may also X-ray your entire mouth or a section of it. The type of treatment your dentist chooses will depend on the extent of damage caused by decay.
