Unit 4. Dental care
Part I. Speaking and vocabulary
Lead – in
Exercise 1: Read the definitions below, and then label the permanent teeth.
Label the Teeth
Canine (also called cuspid) - the pointy tooth located between the incisors and the premolars. A canine tooth has 1 root. Adults have 4 canine teeth (2 in the top jaw and 2 in the bottom jaw). Canine means, "of or like a dog."
Incisors - the front teeth, used for cutting food. An incisor has 1 root. Adults have 8 incisors (4 in the top jaw and 4 in the bottom jaw).
Premolars (also called bicuspids) - the teeth located between the canine and the molars. A premolar tooth has 1 root. Bicuspids have two points (cusps) at the top. Adults have 8 premolars (4 in the top jaw and 4 in the bottom jaw).
Molars - the relatively flat teeth located towards the back of the mouth, used for grinding food. Molars in the top jaw have 3 roots; molars in the lower jaw have 2 roots. Adults have 12 molars (6 in the top jaw and 6 in the bottom jaw).
Exercise 2: Match the types of dental fillings with its function:
Types of dental fillings
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1 |
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Gold Fillings |
a |
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. |
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2 |
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Amalgam |
b |
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. |
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3 |
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Composite |
c |
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. |
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4 |
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Ceramic Fillings |
d |
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. |
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5 |
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Glass Ionomers |
e |
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:
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1. nutritional support 2. oral health 3. picture |
4. remove 5. Chelation 6. alignment |
7. mercury-free 8. Cranial-sacral 9. well-being
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