Fixed Appliances Flashcards
Which of the following is true in relation to the properties of fixed appliances?
a.
Provides root control, less dependent on patient compliance, poor intrinsic anchorage
b.
Provides tooth tipping, good for rotational control, good intrinsic anchorage
c.
Good for tipping teeth, poor rotational control, less dependent on patient compliance
d.
Provides root control, good intrinsic anchorage, difficult to clean
e.
Provides root control, good for achieving complex tooth movements, easy to clean
A
Provides root control, less dependant on patient compliance, poor intrinsic anchorage
For which of the following malocclusions would you want to provide a fixed retainer?
a.
Generalised spacing with upper midline diastema
b.
Anterior open bite treatable with fixed appliances and TAD’s
c.
Class II Division II malocclusion with palatally impacted canines
d.
Class I malocclusion with crowding in both arches and rotated UR2,UR1,UL1,UL2
e.
All of the above
E
All of the above
Which of the following appliance components does not provide anchorage ?
a.
Osseo-integrated mini-screw
b.
Molar band
c.
Baseplate of an upper removable appliance
d.
Palatal arch
e.
Inter-maxillary elastic
B
Molar band
Which of the following materials has not been used to manufacture orthodontic brackets?
a.
Nickel titanium
b.
Cobalt Chromium
c.
Gold
d.
Ceramics
e.
Stainless Steel
A
Nickel titanium
Which of the following statements is true in relation to torque and fixed appliances?
A.
Torque is the angulation of the tooth in a bucco-lingual direction
b.
Torque is the angle the tooth makes to the horizontal along the line of the arch
c.
Torque can be best delivered to the teeth on a round wire in a rectangular bracket slot because there is less friction
d.
Torque is determined by the thickness of the bracket base
e.
Torque is put into the wire by the orthodontist at the very start of a course of appliance treatment
A
Torque is the angulation of the tooth in a bucolic-lingual direction
