Perio Flashcards
Describe how tooth mobility is graded.
Tooth mobility is determined by attempting to move the tooth between a finger and instrument handle in a bucco-lingual direction.
Grade 1: <1mm
Grade 2: 1-2mm
Grade 3: 2mm and/or rotational or depression movement
Describe the procedures required to determine attachment loss at a particular site.
Position of gingival margin relative to amelocemento junction (ACJ) at 6 sites around the tooth is recorded - mesio-buccal, mid-buccal, disto-buccal, mesio-lingual, mid-lingual, disto-lingual. The pocket depth is also recorded at these sites. Loss of attachment is calculated by adding the gingival margin level to the pocket depth. Pocket depth is given a +ve value. Gingival margin values are considered +ve if below ACJ (recession) and -ve if above ACJ (inflammation).
The lingual furcation entrance of a lower first molar can be probed to a horizontal depth of 5mm but no horizontal loss of attachment is evident at the buccal furcation entrance. How would the furcation involvement of this tooth be recorded?
Grade 2: furcation is >3mm but not through and through
Two sites demonstrate the same loss of attachment. Site A has gingival overgrowth and site B has gingival recession. Which has the deeper pocket?
Site A
List the changes you would expect to see in a full mouth pocket chart following nonsurgical treatment of a patient with chronic periodontitis.
probing depth (pocket depth) would decrease
increase in attachment - formation of junctional epithelium
stronger tissue - resistant to probing - there would be more blanching of gingival tissues
less bleeding on probing
What are the disadvantages of a BPE? What can influence the results?
It doesn’t show gingival recession, isn’t diagnostic or quantifiable.
Patients who are smokers - don’t always bleed on probing
Patient tolerance, contour of tooth, angle and pressure can all influence results.
What are the differences between a PCP12 probe and a CPITN probe?
PCP12 probe is used for a periodontal pocket chart. It is blunt ended, and has two black bands at 3mm intervals
CPITN probe is used for a BPE. It is ball ended, and has one black band between 3.5-5.5mm
What is the BPE scoring system?
0=no pockets >3.5mm, no calculus/overhangs, no bleeding on probing (black band completely visible
1=no pockets >3.5mm, no calculus/overhangs but bleeding after probing (black band completely visible)
2=no pockets >3.5mm, but supra- or sub-gingival calculus/overhangs (black band completely visible)
3=probing depth 3.5-5.5mm (black band partially visible, indicating pocket of 4-5mm)
4=porbing depth >5.5mm (black band entirely within pocket, indicating pocket of 6mm or more)
* is furcation involvement
What is the treatment guide for BPE scores?
0=no need for periodontal treatment
1=oral hygiene instruction (OHI)
2=OHI, removal of plaque retentive factors, including all supra- and sub-gingival calculus
3=OHI, root surface debridement (RSD)
4=OHI, RSD, assess the need for more complex treatment; referral to a specialist may be indicated
*=OHI, RSD, assess the need for more complex treatment; referral to a specialist may be indicated
What does CPITN stand for?
community periodontal index of treatment needs
How is the BPE scored?
0 = no pockets >3.5mm, no calculus/overhangs, no bleeding on probing (black band completely visible)
1 = same as 0 but with bleeding on probing
2 = same as 0 but with supra- or sub-gingival calculus/overhangs
3 = probing depth 3.5-5.5mm (black band partially visible, indicating pocket of 4-5mm)
4 = probing depth >5.5mm (black band entirely within pocket, indicating pocket of 6mm or more)
* furcation involvement
