E2 Flashcards
Root trunk length for maxillary molars?
F 4mm
M 3mm
D 5mm
Root trunk length for mandibular molars?
F 3mm
L 4mm
Root trunk length for maxillary bicuspids?
M 7mm
D 7mm
What is defined as a short root trunk length?
1-2 mm
What is defined as a long root trunk length?
> 4mm
Why do premolars with furcation involvement have a very poor prognosis?
bc of their long root trunk length
What is the average root trunk length? And what teeth commonly have this length?
3 mm
Facial Mandibular 1st molar
Bifurcation ridges are present in ___% of _____ molars
73%
mandibular
From what aspect would you probe a mesial maxillary furcation?
from the palate
Glickman’s Class I Furcation Involvement
Incipient bone loss
Radiographically not evident
(defined as incipient bone loss in the furca opening)
Glickman’s Class II Furcation Involvement
Partial bone loss (cul-del-sac)
Depth will vary: early or advanced
Radiograph may or may not appear
Glickman’s Class III Furcation Involvement
Through-and-through bone loss (all the way through the furca to the other side)
Inter-radicular bone is completely absent
Radiographic evidence is a usual finding
Glickman’s Class IV Furcation Involvement
Through-and-through with furcation exposure due to gingival recession
Almost always shows on radiographs
What are the 4 root anatomy modifying factors of furcation involvement?
form
proximity
grooves & concavities
bifurcation ridges
How is the Hamp classification system for furcations different from Glickman?
Hamp is the same except is doesnt recognize a class IV. Hamp combines class III and IV so the hamp system only goes up to class III (i.e. class I 2mm; class III is through-and-through)