Perio 2 + 3

Question 1

When would you carry out a 6PPC?

Answer 1

6PPC are carried out for a BPE score of 3/4 or visible recession but no pocketing

Question 2

What would you do in regards to BPE 3 or 4?

Answer 2

3 - full 6PPC of affected sextant/s after treatment

4 - full 6PPC of full dentition before/after treatment

Question 3

What are the steps to a 6PPC?

Answer 3

• Date
• Patient details
• Missing teeth are scored out to avoid filling numbers in the wrong boxes
• Recession is recorded, finding the position of the gingival margin in relation to the ACJ.
• Pocket depth is recorded, measuring from the gingival margin to the base of the pocket.
• Bleeding on probing/Suppuration on probing
• The presence and degree of any furcation lesions
• Tooth mobility

Question 4

What are the most commonly used probes for 6PPC and what are their markings?

Answer 4

UNC-15 = markings at each mm, black bands from 4-5, 9-10, 14-15mm

PCP-12 = slimmer, black bands at 3-6mm, 9-12mm

Williams probe = markings at each mm up to 10

Question 5

What is the weight of the force you should be using?

Answer 5

20-25g

Question 6

What is the seating position?

Answer 6

from 9 o’clock to 11 o’clock for right handed
from 3 o’clock to 1 o’clock for left handed

Question 7

What are possible causes for inaccuracies in measuring pockets?

Answer 7

• If the tissues are very inflamed,
• If tissues are healed, non inflamed and more resistant to probing
• calculus may obstruct the probe
• root/tooth anatomy may result in inaccuracies in probing depths
• restorations with poor contours, ledges, overhangs may obstruct the probe
• patient discomfort may limit probing
• operator error may fail to detect pockets, or place the probe incorrectly

Question 8

How can the ACJ be assessed?

Answer 8

difference in colour/ texture
estimate in comparison to other teeth
tooth anatomy

Question 9

What are the sites to be assessed in pockets?

Answer 9

distal - mid - mesial

Question 10

What are the directions for walking the probe?

Answer 10

URBuccal > ULBuccal > ULPalatal > URPalatal > LRBuccal > LLBuccal > LLLingual > LRLingual

Question 11

What should you call out?

Answer 11

midline

Question 12

How can recession be assessed?

Answer 12

loss of interdental papilla

Question 13

When can furcations be assessed?

Answer 13

during pocket probing

Question 14

What are the grades for furcation?

Answer 14

1) Less than one third of the tooth width.

2) Exceeds one third but is not the full tooth width.

3) Full tooth width, probe goes through the entire furcation.

Question 15

What are the grades for mobility?

Answer 15

Grade 0 – ‘physiological mobility’ 0.1-02mm in a horizontal direction

Grade 1 - 0.2-1mm mobility in horizontal plane (buccal-lingual)

Grade 2 - mobility exceeding 1mm (1-2mm (no mobility in vertical plane)

Grade 3 - severe mobility of the crown in both horizontal and vertical directions, impinging
on function of the tooth (>2mm horizontal mobility and/or rotation or depression (mobility in vertical plane).

Question 16

How is bleeding indicated on the chart?

Answer 16

a red dot or circle besides the pocket number

Question 17

How do you carry out assessment of tooth mobility?

Answer 17

use the end of a mirror and place tooth between the base of the mirror and your finger and move horizontally
to test vertically, press down on tooth like a button

Question 18

When is the gingival margin value + and when is it -?

Answer 18

When the gingival margin is located coronal to the ACJ it is given a negative value, whereas when it lies apical to the ACJ it is given a positive value.

Question 19

How is BOP assessed?

Answer 19

if there is bleeding at base of the pocket - NOT at the gingival margin

Question 20

What does the abbrevated chart not have?

Answer 20

no gingival margin
used to revise patient periodontal health after months

Question 21

How is LOA calculated?

Answer 21

gingival margin + pocket depth