Oral Health

Question 1

Types of teeth

Answer 1

• enamel (outermost) and cementum (bottom, mineralised)
• Dentin (less mineralised)
• pulp (soft tissue, nerves and blood vessels)

Question 2

amount of teeth

Answer 2

4 - canines
8- incisors
8- premolars
12-molars
primary dentition - no premolars

Question 3

label tooth

Question 4

reasons dental caries occurs (tooth decay)

Answer 4

1. Bacteria
2. substrates (fermentable sugars and decrease O2)
3. susceptibility
   bacteria produces acids which breakdown tooth tissues = erosion of dental tissues

Question 5

Stages of tooth decay

Answer 5

1. Enamel lesion = demineralization of enamel = chalky spots
2. enamel decay = erosion of enamel = yellow discolouration
3. dentine decay = dentine breakdown, bacteria gains access = cavitation
4. pulp involvement = decay reaches pulp, infection can damage blood vessels and nerves
5. Abscess decay = reaches root = increase infection and damage to bone

Question 6

types of periodontal

Answer 6

1. gingivitis
2. periodontitis

Question 7

what is gingivitis

Answer 7

• inflammed gums
• reversible
• not treated = periodontitis

Question 8

what is periodontitis

Answer 8

• gum loss = ligament destruction = loose tooth = infection
• not reversible
• associated with systemic complications