Corrective periodontal treatment

Question 1

Name the 1996 5 level prognostication system

Answer 1

1. Good (for sure)
2. Fair (likely)
3. Poor (maybe)
   
   • More than 50% bone loss, with the presence of a furcation degree 2 or 3, increased mobility of 2 or more
4. Questionable (unlikely)
   
   • Unlikely to be saved after a significant amount of time
5. Hopeless (extraction)

Question 2

What is periodontal stability?

Answer 2

• <10% BOP
• No sites with PPD>4mm
• No degree II/III furcation
• No mobility > 1
• No sensitivity , caries, aesthetic concerns

Kwok & Caton 2007

Question 3

What are the indications of surgical periodontal treatment?

Answer 3

• Increasing periodontal pocket depth
• Increasing width of the tooth surfaces
• Poor access to establish proper curette angulation/adaptation
• Presence of tenacious calculus
• The presence of root fissures, root concavities, furcation & defective restoration margins

Question 4

What is a furcation lesion?

Answer 4

<aside>
🔖 Definition of a furcation lesion (American Academy Periodontology)

“The pathologic resoption of bone in the anatomic area of multi-rooted tooth were bones diverge”
</aside>

Question 5

What is the classification of furcation defects?

Answer 5

Hamp et al. 1975

1. Class 1: horizontal loss of periodontal support <3mm
2. Class 2: horizontal loss of periodontal support >3mm but not “through and through”
3. Class 3: through and through

Question 6

What is the sub-classification of furcation defects?

Answer 6

• Vertical component (Tarnow & Fletcher 1984):
• Subclass A: Vertical bone resorption of 3 mm or less (measured from the furcation fornix)
• Subclass B: Vertical bone resorption of 4 -6 mm (measured from the furcation fornix)
• Subclass C: Vertical bone resorption of 7 mm or more (measured from the furcation fornix)