Posts for tag: fillings
Recently, a number of new filling materials that mimic tooth color have come into popular use and, so far, have proven more durable than past versions. Even so, the traditional metal-based dental amalgam remains a viable choice, especially for less visible back teeth and their higher biting forces.
Used for more than a century, dental amalgam is a metal alloy composed of silver, mercury, tin and copper. The mixture is carefully proportioned so that potentially hazardous mercury is kept to a minimum and bonded with the other metals. Amalgam in its initial form is quite pliable so that it can be molded into the tooth structure under repair. Afterward it sets hard to form a durable filling that can withstand the daily force generated when we bite and chew food.
Besides durability, dental amalgam rarely causes an allergic reaction in a patient, and it’s easy for trained dentists to apply. On the downside, however, it can cause temporary temperature sensitivity in the tooth just after filling, and the tooth itself may require some removal of healthy structure to help keep the filling in place. And from an aesthetic point of view, its metallic appearance is considered unattractive especially for front teeth.
The presence of mercury in amalgam has also raised concerns over the years. “Free” mercury — atoms that escape through vapor emitted by the metal — can enter the bloodstream and potentially harm the nervous system. But after extensive study and research, U.S. and international health bodies including the American Dental Association have concluded any free mercury released during chewing is extremely low and well below any harmful levels. These studies have also found no ill effects in either children or adults with dental amalgam fillings.
Deciding on the type of filling material to use — dental amalgam or a newer composite resin, resin ionomer or glass ionomer — depends on a number of factors including the location of the teeth to be filled, the extent of decay and your personal preferences. Taking these into account, we’ll be happy to discuss which type of filling will suit you best for repairing decayed teeth.
If you would like more information on filling material options including dental amalgam, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine article “Silver Fillings — Safe or Unsafe?”
The goal of restorative dentistry is to return the teeth to full form (shape) and function. For years, a key tool for achieving this goal has been through the use of metal amalgams (silver looking dental fillings). However, this technique does have some disadvantages. One is the fact that they can involve removal of healthy tooth structure to retain them. Too much “undercutting” can undermine and weaken a tooth resulting in less resistance to biting forces possibly leading to fatigue fractures and cracked tooth syndrome. Another approach is call “biomimetic” which literally means mimicking life. This approach to dentistry is made possible through the structured use of tooth-like materials such as composite resins. Scientific studies and clinical experience have validated their use as both safe and predictable.
By mimicking life, we rely upon our delicate balance of artistry, experience and expertise to provide you with properly restored teeth that function and wear normally, while appearing indistinguishable from natural teeth. Dental composite are now the most commonly used materials for tooth-colored adhesive restorations and have properties similar to a natural tooth's enamel and dentin. They consist of resin which are plastic and fillers made of silica (a form of glass). The fillers give the composites wear resistance and translucency (see through properties). However, most of the properties of enamel are also mimicked quite well by dental porcelains. Porcelains are a form of ceramic, that are formed by the action of heat. Dental porcelains come in all colors and shades so we can easily and perfectly match the color of virtually any natural tooth. As for longevity, porcelain is typically your best option because it is the closest option in mimicking a natural tooth.
To learn more on this subject, you can continue reading the Dear Doctor magazine article “The Natural Beauty of Tooth Colored Fillings.” Or contact us today to schedule an appointment to discuss your specific questions.
It used to be that when it came to treating tooth decay (cavities), your primary option was to have the tooth decay removed and filled with a metal amalgam (silver-colored filling). This treatment sometimes requires a special shape cut called an “undercut” to be drilled into the tooth to hold it in. Unfortunately, it can also involve removal of some healthy tooth structure. Silver amalgam fillings still have limited applications and are still used in back teeth where they don't show in the smile. This is because they are strong and resist biting well; however, over time they can fatigue and fracture.
Older restorative concepts were based upon the development of strong and stiff materials such as gold, which tends to be unyielding and therefore contributed to failures of the remaining tooth substance around restorations (e.g., decay or cracking). Newer concepts tend to get away from the “stronger and stiffer is better” concept and have moved towards safety principles using materials that involve mimicking the properties of natural tooth structure. In fact, it is now clearly established that a new “biomimetic approach” (“bio” – life; “mimetic” – mimicking) to dentistry is possible through the use of tooth-like materials such as composite resins and porcelains. And unlike metal alloys, these newer materials bond directly to the remaining enamel and dentin of which the teeth themselves are made, which both stabilize and strengthen teeth.
These techniques are also suitable for children's teeth and can incorporate fluoride to reduce further decay. But perhaps best of all, using these materials and more modern technologies can restore proper tooth function and normal wear while producing results that appear indistinguishable from natural teeth.
To learn more, continue reading the Dear Doctor magazine article “The Natural Beauty of Tooth Colored Fillings.” You can also contact us today to schedule an appointment to discuss your specific questions about replacing your metal fillings with tooth-colored ones.
Cavities used to be nothing to smile about, but thanks to advances in technology, tooth-colored fillings have made repair of decayed teeth so natural, they're invisible. Now you no longer need to feel self-conscious about that unsightly flash of silver when you talk or laugh. While silver amalgam fillings were once the preferred option for tooth restoration filling materials, tooth-colored “composite resins” have gained popularity as a safe and effective alternative to treat new cavities or to replace old silver fillings.
A Better Alternative: Consumer demand for tooth-colored (metal free) restorations as well as the dental profession's desire to preserve as much natural tooth structure as possible has led to the development of special “adhesive” tooth-colored materials. Besides the aesthetic advantages over amalgam fillings, tooth-colored fillings require the removal of less tooth structure. While traditional silver fillings often crack or leak over time, composite resin fillings bond directly to tooth structure and actually reinforce and strengthen it while creating a natural looking smile.
The Choice is Yours: You can choose to replace unsightly silver fillings with tooth-colored ones to enhance their cosmetic appearance. Although concern has been expressed over the mercury content in older silver fillings, years of research cited by the American Dental Association has found that traditional amalgam fillings are safe. Unless you have cracks or damage to your current amalgam fillings or have other concerns regarding your dental health, replacing silver fillings is a matter of personal preference.
Cost: Although composite resin fillings may cost slightly more than silver fillings, they are very durable and may be more cost-effective in the long run.
Contact us today to schedule an appointment to discuss any questions you may have regarding tooth colored fillings. Read more about this topic in the Dear Doctor magazine article “The Natural Beauty of Tooth Colored Fillings.”