Chapter 7 Lesson 3 Caring for Your Teeth Bellringertexhillhealth.weebly.com/uploads/5/3/6/2/53626673/... · Lesson 3 Caring for Your Teeth How to Floss Your Teeth 1. Use 12 to 18

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Lesson 3 Caring for Your Teeth

Bellringer

Write a brief paragraph that describes a trip you took to

the dentist.

Chapter 7




Objectives

• Describe the structure and function of teeth.

• Identify two minor problems of teeth.

• Describe how a cavity forms.

• Describe effective dental care.

Chapter 7




Start Off Write

How does a cavity form?

Chapter 7




Structure and Function of Teeth

• The shiny, white portion of the tooth is called the

crown.

• The crown is white and hard because it is covered

by enamel, the hardest substance in your body.

• The next slide shows the parts of your teeth.

Chapter 7



Lesson 3 Caring for Your TeethChapter 7




Tooth and Gum Problems

• Healthy Gums Check your gums regularly by

looking at them in the mirror. Your gums should be

bright pink and free from sores.

• What Is Plaque? Plaque is a mixture of bacteria,

saliva, and food particles. It is very sticky and binds

to the enamel of your teeth. The bacteria and acid

found in plaque can cause bad breath and even

worse—cavities!

Chapter 7




Dental Cavities

• What Is a Cavity? A cavity is a hole in your tooth

that is made by acids.

• How Are Cavities Formed? A cavity begins when

plaque forms on your tooth. The plaque holds the

acids very close to the enamel of the tooth. Even

though the enamel is very tough, the acids

eventually eat through it and make a hole.

Chapter 7



Lesson 3 Caring for Your TeethChapter 7

As dentin decays, the cavity eventually reaches the

pulp.




How to Brush Your Teeth

1. Brush at least twice a day.

2. When you brush, move the toothbrush up and

down and back and forth.

3. Be sure to brush between your teeth.

4. Also, be sure to brush your gums.

Chapter 7




How to Floss Your Teeth

1. Use 12 to 18 inches of floss.

2. Wrap a few inches of floss around one finger of

each hand.

3. Slip the floss between two teeth, and move it up

and down and back and forth on each inner surface

of each tooth.

4. Go slightly below gum level to reach the trapped

plaque.

Chapter 7




Keeping Your Teeth for Life!

1. Use a toothpaste that contains fluoride.

2. Use a toothbrush with soft bristles.

3. Replace your toothbrush every few months.

4. Eat foods high in calcium.

5. Limit the amount of sugary foods you eat.

6. Visit your dentist regularly.

Chapter 7



Lesson 4 Caring for Your Eyes

Bellringer

Explain why you blink your eyes.

Chapter 7




Objectives

• Identify the parts of the eye.

• Explain how the eye works.

• Describe five ways to take care of your eyes.

Chapter 7




Start Off Write

Why should you wear eye protection when you work

with hand tools?

Chapter 7




How Eyes Work

• The Parts of Your Eye Your eyelids protect your

eyes and bathe them in tears to remove dust and

harmful bacteria. The rest of parts of your eye are

illustrated on the next slide.

Chapter 7



Lesson 4 Caring for Your EyesChapter 7




Eye Care

• Wear a protective face mask or goggles

whenever your eyes could be hit or hurt.

• Wear sunglasses to prevent eye damage from

the sun.

• Don’t rub your eyes.

• Get regular eye exams.

• Never wear glasses that are prescribed for

someone else.

Chapter 7



Lesson 4 Caring for Your EyesChapter 7

These eye problems cannot be prevented.



Quote of the Day

“You don’t have to brush your teeth – just

the ones you want to keep.”

—Author Unknown

Documents

Chapter 7 Lesson 3 Caring for Your Teeth Bellringertexhillhealth.weebly.com/uploads/5/3/6/2/53626673/... · Lesson 3 Caring for Your Teeth How to Floss Your Teeth 1. Use 12 to 18