It's Elastic!
One of two ways to increase the strength of elastics
Increase the weight or
Decrease the size
The hardest order to correct
Powerchaining longer than a 3 tooth span can result in...
Undesired changes in arch form
Loss in torque
U4's + L5's
The orthodontist's hemostat
Mathieu
The heaviest elastic WEIGHT
6.5 oz
The order that is best corrected in round nit
1st order/Rotation
Powerchaining an extraction space on niti can result in...
Rollercoaster effect
Teeth tipping into extraction space
Class III extraction pattern
U5's and L4's
Used to create space between brackets
Open coil spring
The reason to use 1/4" over 3/16" as a starting elastic
1/4" = non-extraction AP correction
3/16" = extraction AP correction
The order that is best corrected in rectangular niti
2nd order/Tip
Powerchaining the full bracket of a terminal tooth is acceptable as long as...
The bracket is STEEL TIED to wire
Turbo placement for deep bite
Ubi's
Place on bracket to allow for elastic wear
Kobayashi tie
The lightest elastic; Usually used as a starting elastic for PSL mechanics
Komodo Dragons
3/16" 2.5oz
What to do if a lateral incisor's crown needs negative torque?
Flip the bracket
Used to bring down an U3 without intruding adjacent teeth
Piggyback niti with a heavy SS
Avoid in hyperdivergent patterns
Posterior ELASTICS!
Property placed in niti to allow use of larger wires earlier in treatment
Cu
Used in place of elastics for non-compliant AP correction
CS4 Springs
Order that can not be corrected in a SS wire
NONE!
Can correct any order in SS wire with the correct bend
Name 2 out of 3 factors of the most frictionless sliding mechanic system
ST over o-tie
PC hook over tie-wings
Round SS
Drawback of extracting L5's
Poor contact between L4's + L6's
Type of Pitts niti used after repoing
Soft niti