Classification of Periodontal Disease

Question 1

Name an example of when a patient can have a reduced periodontium

Answer 1

Crown lengthening surgery

Question 2

What does the staging part of classification mean?

Answer 2

Stages based on severity

1 - early mild
2 - moderate
3 - severe (potential for additional tooth loss)
4 - very severe (potential for loss of dentition)

Question 3

What does the grading part of classification mean

Answer 3

Grades based on disease susceptibility (A, B or C)

Question 4

Stage 1 interprox bone loss at worst site

Answer 4

<15% or 2mm

Question 5

Stage 2 interprox bone loss at worst site

Answer 5

Coronal third of root

Question 6

Stage 3 interprox bone loss at worst site

Answer 6

Mid third of root

Question 7

Stage 4 interprox bone loss at worst site

Answer 7

Apical third of root

Question 8

How do we use bone loss to stage?

Answer 8

Use maximum bone loss at worst site

Question 9

Where do we measure from our BWs

Answer 9

Measure from CEJ

Question 10

How is grading calculated?

Answer 10

Find the worst site of bone loss

Assign it a %

% bone loss divided by age

Question 11

What does a Grade A actually mean?

Answer 11

Max bone loss less than half the patients age

Question 12

What does a Grade C actually mean?

Answer 12

Max bone loss more than patients age

Question 13

How is the extent of peridontitis noted?

Answer 13

1. Localised
   <30% of teeth
2. Generalised
   More than 30% of teeth

Question 14

Course of action if a code 3 noted?

Answer 14

6PPC in that quadrant post tx

Radiographs

Question 15

Course of action if a code 4 noted?

Answer 15

6PPC throughout the entire dentition

Radiographs

Question 16

In a 6PPC, site should only be recored if …?

Answer 16

If 4mm and above

Question 17

Whats the word order for the diagnosis for perio patient? (4)

Answer 17

1. Extent (generalised or localised)
2. Severity (stage 1-4)
3. Disease progression (A-C)
4. Stability

Question 18

How does a pregnancy epulis look? (3)

Answer 18

1. Big large mass forms after birth
2. No radiological bone loss
3. No interdental recession

Question 19

What are the 3 types of necrotising perio disease?

Answer 19

1. Necrotising gingivitis
2. Necrotising periodontitis
3. Necrotising stomatitis

Question 20

How does necrotising gingivitis present clinically?

Answer 20

• Ulceration around gingival margin
• White grey fibrin protein
• The

Question 21

How does necrotising periodontitis present clinically?

Answer 21

• V localised and dramatic loss of bone tissue

- Crater type defect

Question 22

List 2 systemic conditions that affect periodontal tissues

Answer 22

1. Squamous cell carcinoma

2. Langerhans cell