Wire, Brackets, Aligners Flashcards
- What were the first arch wires used in leveling and aligning?
- Nickel Titanium
- What shape of wire is used to level the curve of Spee?
- Reverse curve
- Ligature ties are a bendable material. They are used as co ties.
- True/True
- What type of wire is used for torque?
rectangular
- After a canine exposure, what material can you use to tie to a gold chain?
- Zing String
- What type of material is used to hold space that we like?
Closed coil spring
- Which material is used for space closure?
power chain
- If you engage the power chain to the distal bracket the teeth will rotate in what direction?
mesial
- What kind of tie is used to add an elastic to a hook that does not have a bracket?
Kobi tie
T/F Using a combination of Ni-ti wire overtop stainless to bring a tooth into the arch is called “Piggyback”
true
What are bite turbos used for in orthodontics?
ALL OF THE ABOVE ***
1. Helps to open the bite in a deep bite case
2. Helps to jump a cross bite
3. Can help to intrude teeth from biting into the turbo
4. All of the above.
. What makes it possible for nickel-titanium arch wires to exhibit super elastic behavior?
- This behavior is based on a reversible transformation between the austenitic and martensitic phases
A wire with a low load/deflection rate is capable of generating constant forces that do not depend much on the amount of activation. Bending loops into an arch wire reduces its load/deflection rate by increasing the wire length.
BOTH TRUE
A wire extending from the molars to incisors is activated to intrude the incisors. What is the side effect on the molars?
C. Molars tip distally & extrude
What is another term for Power Tubing?
BUMPER TUBING
What type of elastics should not be used on a high mandibular plane angle patient?
- Class II elastics
What type of elastic wire is often used for a peg lateral?
Coil Spring
What is an example of an orthodontic auxiliary?
- Elastic thread
- Power tubing
- Coil spring
All of the above
T/F: you can remove brackets off of a pt that is not technically yours
true
T/F: With every force, there is an opposite and equal reaction, which needs an adequate amount of space. There needs to be transverse movement first, before anterior and posterior movement
true
If you want to move a mesially rotated maxillary 1st premolar, what tooth would you tie the power chain to? Which way would that tooth rotate?
- Canine, to the distal
Which ortho wire material would be the best choice for a patient with nickel allergy
beta titanium
T/F - Tads can be used alongside other orthodontic appliances.
true
How many millimeters is one turn in expansion?
.25mm
What is the primary mechanism of action for the Herbst appliance in correcting a Class II malocclusion?
advance the mandible forward
How much force is required to move the maxilla?
500g
Which orthodontic appliance(s) are used to correct anteriorposterior skeletal discrepancies?
Headgear
Herbs Appliance
Which of the following orthodontic appliances is considered a palatal expander?
Quad Helix
Doubling the force applied at the bracket of a tooth would have what effect on the rotational tendency during tooth movement?
- The moment would double.
The Herbst appliance is used in the correction of which malocclusion?
Class II
What is the role of the lower Lingual arch space maintainer?
holds position of lower 6s
The nature of the bond between the enamel and the resin used to attach an orthodontic bracket is ______.
mechanical
Use of elastics with good patient cooperation provides the clinician with the ability to correct what discrepancies?
both
What are the effects of class II elastics?
all of the above
(* lower incisor flaring
* Steepening of occlusal plane
* Upper incisor & lower 1st molar extrusion
)
The photograph shows a maxillary fixed bilateral space maintainer. This type of space maintainer is also known as a _____________. (B) If both primary canines were present, which of the following space maintainers could be used in place of this appliance that cannot be used in this case?
A = nance
B = band and loop bilateral
Which of the following teeth is most likely to not erupt into the arch due to overcrowding?
second premolars
A distal shoe appliance is classified as what kind of appliance?
unilateral fixed
What is the ideal space maintainer to prevent lingual movement if there is premature loss of the mandibular primary canines?
lingual arch
An 8-year-old boy came to orthodntic OPD for orthodontic evaluation. On clinical examination, the orthodontist observed that he has a severe anterior open bite and bilateral maxillary constriction. Upon inquiring, the mother said that the boy had a thumb sucking habit. He has permanent incisors and molars and deciduous canines and 1st and 2nd pre-molars in both arches.
quad helix
True/False: Herbst appliance uses a piston and tube device to passively push the maxilla forward as the patient closes. (False – it pushes the mandible forward)
false
True/False: The best space maintainer is the primary tooth itself?
true
T/F: Some advantages of using Rectangular Arch Wires are to control crown & rootu movement.
true
Which of the following is NOT a type of palatal expander?
lingual arch appliance
- T/F: The most posterior, inferior point on the gonial angle at the junction of the body of the mandible and ramus is GONION
true
T/F: Patients can be allergic to wire made from Nickel or with Nickel covering. Symptoms include inflammation, itching, or mild irritation.
true, true
A headgear appliance is used for :
both anchorage and traction
which of the following has not been proven to be a causative factor in human oro-facial clefting?
tylenol
All of the following are advantages of the indirect method of bonding brackets to a tooth over the direct method EXCEPT one. Which one is the EXCEPTION?
less technique sensitive
Which of the following metals is commonly used to make orthodontic wires because of its resilient properties and flexibility?
stainless steel
All of the following can tie to a hook, button or bracket to bring a tooth into the arch except:
power tubing
What type of hooks are placed prior to orthognathic surgery for post-surgical elastics?
crimpable hooks
What is a potential side effect from using CS2000 springs?
flare teeth
What wires are also known as TMA?
beta titanium
Which of the following is a goal of using a rapid palatal expander (RPE) in orthodontics?
To achieve skeletal separation of the mid-palatal suture
T/F: The line joining the ORBITALE and GONION is known as the “Frankfort Plane”.
false
(orbitale and porion)
