1. Chapter 7
Lesson 3 Caring for Your Teeth
Bellringer
Write a brief paragraph that describes a trip you took to the dentist.
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2. Chapter 7 Objectives Describe the structure and function of teeth.
Lesson 3 Caring for Your Teeth
Objectives
Describe the structure and function of teeth.
Identify two minor problems of teeth.
Describe how a cavity forms.
Describe effective dental care.
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3. YOU MUST WRITE IN PARAGRAPH FORM!
Chapter 7
Lesson 3 Caring for Your Teeth
Journal /27/14
How does a cavity form?
YOU MUST WRITE IN PARAGRAPH FORM!
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4. Structure and Function of Teeth
Chapter 7
Lesson 3 Caring for Your Teeth
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.
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5. Chapter 7 Lesson 3 Caring for Your Teeth
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6. Chapter 7 Tooth and Gum Problems
Lesson 3 Caring for Your Teeth
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!
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7. Chapter 7 Dental Cavities
Lesson 3 Caring for Your Teeth
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.
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8. Chapter 7 As dentin decays, the cavity eventually reaches the pulp.
Lesson 3 Caring for Your Teeth
As dentin decays, the cavity eventually reaches the pulp.
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9. Chapter 7 How to Brush Your Teeth 1. Brush at least twice a day.
Lesson 3 Caring for Your Teeth
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.
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10. Chapter 7 How to Floss Your Teeth 1. Use 12 to 18 inches of floss.
Lesson 3 Caring for Your Teeth
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.
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11. Keeping Your Teeth for Life!
Chapter 7
Lesson 3 Caring for Your Teeth
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.
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12. YOU MUST WRITE IN PARAGRAPH FORM!
Chapter 7
Lesson 4 Caring for Your Eyes
Journal /27/14
Explain why you blink your eyes.
YOU MUST WRITE IN PARAGRAPH FORM!
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13. Chapter 7 Objectives Identify the parts of the eye.
Lesson 4 Caring for Your Eyes
Objectives
Identify the parts of the eye.
Explain how the eye works.
Describe five ways to take care of your eyes.
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14. Chapter 7 Start Off Write
Lesson 4 Caring for Your Eyes
Start Off Write
Why should you wear eye protection when you work with hand tools?
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15. Chapter 7
Lesson 4 Caring for Your Eyes
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.
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16. Chapter 7 Lesson 4 Caring for Your Eyes
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17. Chapter 7
Lesson 4 Caring for Your Eyes
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.
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18. Chapter 7 These eye problems cannot be prevented.
Lesson 4 Caring for Your Eyes
These eye problems cannot be prevented.
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19. “You don’t have to brush your teeth – just the ones you want to keep.”
Quote of the Day
“You don’t have to brush your teeth – just the ones you want to keep.”
—Author Unknown
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