Longitudinal (short version)

Question 1

What were the main findings of the Michigan Longitudinal Studies?

Answer 1

Shallow pockets often respond to therapy with CALoss
Moderate and Deep pockets respond better to surgical therapy
Some initial gains are lost after surgical therapy
3mrc can maintain treatment outcomes regardless of OH

Question 2

Why do the Michigan studies say recall is more important than OH?

Answer 2

Ramfjord 1982
Stratified the patients from Knowles 1979 by FMPS > or < 25%
Therapeutic improvements were maintained with 3mrc regardless of PI
Patients with better OH had better initial response to therapy

Question 3

Whats significant about Knowles 1979?

Answer 3

First to stratify based on PD
Shallow 1-3
Moderate 4-6
Deep 7+

Deep pockets gain more attachments than moderate

Question 4

What is the “Michigan Concept?”

Answer 4

Effective Root Curettage

Maintenance of the supporting structures of the teeth

Question 5

Who was the head of the Minnisota studies?

Answer 5

Pihlstrom

Question 6

What are the major findings of the Minnesota studies?

Answer 6

Surgical treatment is more effective in deep PD (>7mm)
PD reduction sustained longer for these PD than in non-surgical (6.5 vs 3yrs)
Molars do not respond as well to treatment

Question 7

What years are the Minnesota studies?

Answer 7

1981, 1983, 1984

Question 8

Who lead the Nebraska studies?

Answer 8

Kaldahl

Question 9

What can happen with coronal scaling?

Answer 9

Kaldahl 1996

CS in pockets >7mm can result in abscess formation

Question 10

What procedures did the Nebraska studies research?

Answer 10

Coronal scaling vs SRP vs MWF vs APF+OSS

Question 11

What procdure will have the greatest CAL gain in 5-6mm pockets? citation

Answer 11

SRP

Kaldahl 1988

Question 12

How long will PD improvements continue after therapy?

Answer 12

Kaldahl 1996

10wks plateau

Question 13

Why do we do APF OSS often now>?

Answer 13

Kaldahl 1996 found after 5yrs, pockets >5mm had greater long term PD reduction when receiving APF+OSS

Question 14

What were the main findings of the Nebraska studies?

Answer 14

non/past smokers have 2x more CAL gain and PD reduction
Coronal scaling results in the highest amount of breakdown
Deep pockets (>7mm) respond best and sustain longest with APF+OSS

Question 15

Who lead the Lloma Linda studies?

Answer 15

Badersten

Question 16

What were some findings from the Lloma Linda studies in regard to instrumentation? Citation

Answer 16

Badersten
Hand vs Ultrasonic - NSSD
Multiple SRP - NSSD ( SINGLE ROOTED)
Operater variability - minimal

Question 17

Will patients gain CAL from home care?

Answer 17

NO
Cercek et al. 1983
Brushing/Flossing/CHX - minimal effect
SRP - EFFECTIVE

Question 18

Who lead the Arizona studies and what is unique about them?

Answer 18

Becker and Becker

Private practice

Question 19

What did the Arizona studies find?

Answer 19

Similar to university studies
PD 1-3: CALoss with treatment
PD4-6 and 7+: CAL gain
lowest residual pocketing from APF+OSS
Good maintenance achieve good results regardless of treatment modality

Question 20

What were some results of the Washington studies?

Answer 20

Flap curettage vs Osseous
Deeper PD (5-8) greater PD reduction with osseous
Osseous was more stable after 5yrs
More BOP in curetage groups

Question 21

What major finding came from the swedish studies?

Answer 21

Lindhe 1982 Critical probing depths

Heitz Mayfield & Lang 2013 -

Question 22

What major finding on oral hygiene came from swedish group?

Answer 22

Lindhe 1984

Oral hygiene effected long term results more than surgical technique (PI >10%)

Question 23

Who lead the Denmark studies?

Answer 23

Isidor (and Karring()

Question 24

What were the major findings from the Denmark studies?

Answer 24

APF and MWF resulted in shallower pockets than SRP
SRP resulted in more CAL gain
MWF resulted in significant fill of vertical defects (0.5mm)