Furcation Involvment (E2, L1)

Question 1

Which is harder to clean: a long root trunk or a short root trunk? What does this mean about PM with furcation involvement?

Answer 1

longer is harder to clean, more surface area for bacteria to stick to…PMs have terrible prognosis

Question 2

Important to know the numba’s: What are the three furcation measurements for a Maxillary Molar? (F, M, D)

Answer 2

F-4mm, M-3mm, D-5mm

Question 3

Important to know the numba’s: What are the two furcation measurements for a Maxillary Bicuspid? (M,D)

Answer 3

M-7mm, D-7mm

Question 4

Important to know the numba’s: What are the 2 furcation measurements for a mandibular molar? (F,L)

Answer 4

F-3mm, L-4mm

Question 5

Root concavities can be difficult to clean, for example the M root of a mand 1st molar can have a ___mm concavity.

Answer 5

0.7mm

Question 6

Did you know, bifurcation ridges are present on __% of mandibular molars?

Answer 6

73%…yay! you did know!

Question 7

How are you going to probe the mesial furcation on a maxillary molar?

Answer 7

Through the palate! (she said an exam question example)

Question 8

Which furcation class system has 4 classes? Which one only uses 3?

Answer 8

Glickman has 4 Classifications, Hamp uses 3

Question 9

What are the two indications of a Glickman Class I furcation involvement?

Answer 9

1.Incipient Bone Loss 2.Radiographically not evident

Question 10

What are the three indications for a Glickman Class II furcation?

Answer 10

1.Partial Bone Loss (cul-del-sac) 2.Depth will Vary (early OR advanced) 3.Radiograph may or may not appear

Question 11

What are the three indications for Glickman’s Class III furcation?

Answer 11

1.Through and through 2.inter-radicular bone is completely absent 3.Radiographic evidence is a usual finding

Question 12

What are the two indications for Glickman’s Class IV furcation involvement?

Answer 12

1.Through and through with furcation exposure due to gingival recession 2.Almost always shows in radiographs

Question 13

What is a Hamp Class I?

Answer 13

less than 2mm of furcation bone loss

Question 14

What is a Hamp Class II?

Answer 14

> 2mm loss in furcation

Question 15

What is a Hamp Class III?

Answer 15

through and through bone loss in furcation ( that MAY or MAY NOT be exposed c/o gingival recession)

Question 16

What is a common complication when cleaning a furcation with an instrument?

Answer 16

the entrance is usually 1mm while the curet is 1.25mm!!

Question 17

What is a GRADE I Cervical Enamel Projection???

Answer 17

Distinct change in the CEJ that projects toward the furca.

Question 18

What is a GRADE II Cervical Enamel Projection???

Answer 18

CEP approaching the furcation

Question 19

What is a GRADE III Cervical Enamel Projection???

Answer 19

CEP at the roof of OR INTO the furcation

Question 20

Which teeth are most common to have a CEP (cervical enamel projection)?

Answer 20

28.6% of mand molars….only 17% of maxillary molars

Question 21

DID YOU KNOW: CEPs in 90% of mand molars with _____ involvement!

Answer 21

furcation

Question 22

DID YOU KNOW: there is a ___% association between the presence of a CEP and furcation involvement!!

Answer 22

50%

Question 23

Which teeth are most likely to have ENAMEL PEARLS? what % of permanent molars in general?

Answer 23

WHIZZIES!!! 75% of them!! only 1-5% of permanent molars in general

Question 24

Accessory Canals! Actually pretty common on 1st molars…to the tune of ___% on MAXillary and ___% on MANDibular molars.(FML says the endodontist)

Answer 24

36% for MAX…..32% for MAND

Question 25

Accessory Canals! Also fairly common on 2nd molars: more common on MAND 2nd molars @ ___% and ___% on MAX 2nd molars.

Answer 25

24% of mand 2nd’s….and 12% of MAX ends

Question 26

In NON-VITAL teeth or those with pulpitis, accessory canals are often associated with Abscess “________” of the furcal bone.

Answer 26

“blow-outs”

Question 27

A tooth loss study: in a 22 year study of 459 pt’s-well maintained pt’s lost 0-3 teeth ___% of the time (with ___% of them losing 0 teeth)! Whereas only __% lost 10-23 teeth.

Answer 27

83% (50%)!!…4%

Question 28

Frequency of losing teeth…WHAT ARE THE 4 most susceptible teeth to be lost in perio disease?????

Answer 28

1.Max 2nd Molar 2.Max 1st molar (freaking gravity!) 3.Mand 2nd molar 4.Mand 1st molar

Question 29

Frequency of losing teeth…WHAT ARE THE 2 LEAST susceptible teeth to be lost in perio disease?????

Answer 29

1.Maxillary Cuspid 2.Mandibular Cuspid

Question 30

What is the overall average length for a furcation? (dumb question c/o vagueness but I can see it coming up)

Answer 30

3mm