1.7 PDL Response Flashcards
1
Q
light forces cause ___ ___, but heavy forces activate ___ ___
A
fluid displacement
principal fibers
2
Q
resorption = ___, deposition = ___
A
forward (pressure side)
behind (tension side)
3
Q
PDL width
A
0.25 mm
4
Q
PDL width is ___ to cellular activity
A
proportional
5
Q
excess force causes ___
A
hyalinization (MC ortho complication)
6
Q
hyalinization is ___-dependent
A
force
7
Q
bone resorption of the hyalinized zone is ___ or ___
A
indirect
undermining
8
Q
factors influencing tooth movement (3)
A
bone character (cortical or trabecular)
force
time
9
Q
best ortho bone
A
cancellous
