Transcript Ch14.Lesson2

Chapter 14, Lesson 2
Guided Reading Activity 51
Care of Teeth and Mouth
1. List two ways healthy teeth
contribute to your overall health
and appearance.
• Allow you to chew foods
• Help form the shape and structure of
your mouth.
2a. Answer the following about
periodontium:
• What is the
periodontium?
– Area immediately
around the teeth.
2b. Answer the following about
periodontium:
• What makes up the
periodontium?
– Made up of the
gums
– The periodontal
ligament
– The jawbone
2c. Answer the following about
periodontium:
• What do the structures of periodontium
do?
– Support the teeth
– Hold them in place
3. What are
the three
main parts
of a tooth?
4. List the layers of a tooth and a brief
description.
Enamel
hard substance made of
calcium
Dentin
layer of connective tissue
that acts as barrier to
protect the pulp.
Pulp:
Tissue that contains the
blood vessels and nerves
of a tooth.
5. What is one of the main
threats to the health of your
teeth?
• Bacteria
– Live in your mouth
– Live on the sugar in food
6. Answer the following about
plaque:
• What is plaque?
– Sticky, colorless film that acts on sugar to form
acids.
– Acids destroy tooth enamel and irritate gums.
• How does plaque contribute to tooth decay?
– Plaque coats a tooth and prevents saliva from
reaching the tooth.
– When plaque accumulates, bacteria develops acid
with act on the tooth enamel.
7. What are the benefits of
brushing and flossing teeth?
• Brushing removes plaque.
• Flossing removes plaque in areas that are
not reached by the brush.
8. Describe 5 tips for effective
tooth brushing.
•
•
•
•
Hold bristle tips at 45 degrees to gum line.
Brush back and forth in short strokes
Use a gentle scrubbing motion.
Brush outer surfaces of each tooth, inner
surfaces and then chewing surfaces.
• Floss not only between teeth but also
beneath the gum line.
9. Besides brushing and
flossing, what are two others
ways to maintain dental health?
• Regular visits to the dental care professional.
• Eating a well-balanced diet.
10. Answer the following about
problems of the teeth and mouth
• A. What is halitosis?
• Bad Breath
10b. What causes halitosis?
– Caused by eating certain foods
– Poor oral hygiene
– Smoking,
– Bacteria on the tongue
– Decayed teeth and gum disease
10c. What is periodontal disease?
– Inflammation of the periodontal
structures.
10d. How are plaque, tartar and
gum disease related?
• If plaque and tartar not removed, gums
become irritated and swollen.
• Left untreated it will develop into gum
disease.
• Can progress to the point of tooth loss.
10e. What are three possible
sources of a malocclusion?
• Extra teeth
• Crowded teeth
• Misalignment of
the upper and
lower jaws.
10f. What are two bad effects of
malocclusion?
• Lead to decay
and disease.
• Can affect
speech
• Ability to chew