There are many types of filling materials available, each with their own advantages and disadvantages. Composite fillings, along with silver amalgam (silver) fillings, are the most widely used today. Dr. Bell will discuss the advantages and disadvantages of each and together you will decide the option that best suits you and your specific dental needs.   

 

Amalgam Fillings

Dental amalgam is made from a combination of metals that include mercury, silver, tin, and copper. Sometimes described as “silver-colored” fillings, dental amalgam has been used by dentists for more than 100 years because it lasts a long time

(10  - 15 years), can withstand chewing forces and is less expensive than other cavity-filling materials such as tooth-colored composites or gold fillings.

 

Because of their durability, these silver-colored fillings are often the best choice for large cavities or those that occur in the back teeth where a lot of force is needed to chew. Amalgam hardens quickly so it is useful in areas that are difficult to keep dry during placement, such as below the gum line. Because it takes less time to place than tooth-colored fillings, amalgam is also an effective material for children and special needs people who may have a difficult time staying still during treatment.

 

Composite Fillings (tooth-colored)

Because composite fillings are tooth-colored, they can be closely matched to the color of existing teeth and are more aesthetically suited for use in front teeth or the more visible areas of the teeth. These fillings are made of a combination of plastic and glass and have become more durable with technological improvements in resin strength. As with most dental restorations, composite fillings are not permanent (5 - 7 years) and may someday have to be replaced. 

 

Reasons for using composite fillings:

• Chipped teeth

• Closing space between two teeth

• Cracked or broken teeth

• Decayed teeth

• Worn teeth

 

What is a cavity and how does a filling fix it?

A cavity is a hole left behind after tooth decay destroys part of a tooth. When tooth decay destroys part of a tooth, the resulting cavity is often sensitive. The cavity in the tooth still contains the bacteria that created it. Left unchecked, this decay will continue to spread and damage the tooth. It could expose inner nerves, compromise the tooth’s structural integrity, or become a site of continued infection. Even if the dentist removed the decay from inside the cavity, the hole itself would present a problem for the tooth. Fillings prevent bacteria or plaque from building up inside cavities, which could lead to serious infections. They also reinforce the tooth, to keep it from chipping, cracking, or breaking inward from trauma. Without a filling, even minor cavities could seriously compromise the health and function of your teeth. By filling in the hole, dentists restore full functionality to a damaged tooth.