This natural-looking dental material when placed on the affected tooth acts as a source of fluoride, which helps in remineralization. In addition, durability is a big disappointment as this filling need to be replaced after every 3 to 5 years.
Constructed from porcelain material, these tooth-colored fillings are sturdy and long-lasting. Their natural appearance makes them impossible to differentiate from natural teeth. They are expensive.
This material is very strong, and hence, can successfully withstand wear and tear for quite long. The filling does not wear away for at least 15 years.
Known as white fillings, they essentially consist of synthetic resin combined with plastic and glass particles. As the tooth-colored material cannot be detected, it is a sought-after filling for frontal teeth. This material does not last for more than 5 years.
These fillings are a combination of multiple metals including mercury, silver, copper, and tin. In most cases, well-placed fillings last for about 12-13 years. Some dentists are of the opinion that this filling when fitted correctly, and complemented with proper oral care, may not require replacement for even up to 50 years!
Exercise 3:Complete the text using the words and phrases: