3A. Band and Bond Flashcards
(44 cards)
‘adjunct’
DEFINITION: something added to another thing but not essentially a ____ of it (American College Dictionary)
part
Examples of Adjunctive Orthodontic Treatment
____ Uprighting
____ Tooth Movement
n e.g. forced tooth extrusion
molar
minor
These are like the bands that we fit on our typodont, our molars and premolars.
In the past days of ortho (1920’s), this was typical to place bands on all teeth, place on anteriors as well as posteriors. Now, with the superior bond strength that we have, many ortho cases that you see in the clinic upstairs and in private practice are done without ____ at all. Sometimes it is necessary, as we will discuss, to band teeth that we need to place stronger traction mechanisms to (head devices, palatal expanders). But because of better composite materials, we’ve been able to avoid having to band all teeth like we have in the past.
banding
Our typical bracket is a “____” bracket or “____” bracket.
It has mesial and distal side wings which help with movement control. Created by a faculty member here at Penn!
See this in 90+% of ortho treatment used.
It is NOT the original bracket, that was a ____ bracket with just one tie wing across the center. Rant about faculty inventing brackets….
siamese
dual winged
mono-winged
Orthodontic Bracket (Components)
____
____
____ Wings
base
slot
tie
The base itself like the brackets that we use for our typodont exercises, etc. On the back side of the bracket base is a ____ backing. The point is to create the best bond strength between the band and the tooth itself.
mesh
Bracket Base Mesh-backed
PURPOSE: create a ____ interface between the bracket and the tooth surface
mechanical
Most brackets regardless of design, have this mesh back base.
If a bracket debunks from a tooth, you can’t place the ____ bracket back on! You won’t get the same bond strength. Have to place a new bracket. We lose that mechanical interlocking. You could also ____ back of the bracket itself to remove the composite and get that interface back and create the mechanical interlocking.
same
micro etch
Bracket Slot PURPOSE: translate \_\_\_\_-dimensional control of archwire to tooth BASIC SLOT DIMENSIONS n height \_\_\_\_” n depth \_\_\_\_”
3
- 022
- 028
If you look at dimension, when we place our 016 (round) wire into the slot, there is a lot of interplay between the slot and the wire itself.
- If you were to place a stronger heavier wire, the 1825 wire, the rectangular wire, that we used for the uprighting spring, we would be filling that slot a little more fully and we would have best ____ control.
- SO the thinner the wire, the rounder the wire, the ____ control we have. As we progress from round to ____ wire, we are filling that slot more completely and thus really enhancing the 3D control that is built into the bracket itself.
3D
lesser
rectangular
Bracket Wings
____ wings
PURPOSE: ligating ____ into bracket slot
4
archwire
Orthodontic Brackets (Materials)
____ (stainless steel) Ceramic/Porcelain
____
Plastic/Polycarbonate
Combination (i.e. ____ bracket; ____ base/wings with a ____ slot)
metal polycrystalline alumina unitek clarity porcelain stainless steel
The bracket itself acts as a handle on each tooth, but what actually dictates ____ is the arch wire. The bracket gives us tooth control. The arch wire translates movement to the bracket.
movement
This is the CLARITY BRACKET. These are ____ brackets (full ceramic, ceramic base, tie wings, and slot). It gives us the best aesthetic superiority.
ceramic
This is the ORIGINAL CLARITY bracket. A \_\_\_\_ base and tie wings, but a \_\_\_\_ slot. This is a hybrid bracket, metal and porcelain. What is the advantage of this type of bracket? ANSWER: 1. you can \_\_\_\_ it better. Porcelain is very tough to see, so we add a blue tint to the clarity brackets (slide above). This blue tint will wash off after patient brushes so that they look crystal clear, but the tint is useful for placing the bracket. That is one advantage to the original steel slot. 2. How about a mechanical advantage? It is not more rigid... there is less \_\_\_\_! There is more binding between the porcelain bracket and the metal arch wire. If you are talking about \_\_\_\_ wires and a \_\_\_\_ slot, there is better sliding mechanics, there is less friction. 3. So the advantage of this bracket is \_\_\_\_ and better \_\_\_\_ mechanics (which is a downside to the consideration of porcelain brackets). Of course, any friction in the system slows down and impedes tooth movement.
porcelain metal visualize friction stainless steel stainless steel aesthetic sliding
Orthodontic Brackets (Design) Horizontal slot (\_\_\_\_ v. non-Rx) Vertical slot (\_\_\_\_ technique) Self-ligating (i.e. \_\_\_\_, In-Ovation, \_\_\_\_)
rx
begg
speed
damon
Horizontal slot
Our horizontal brackets have our typical component like we talked about. Our base, tie wings, and wire slot.
The wire is set in the wires slot, and ligated in with ____.
elastics
Horizontal slot (lingual)
Also in the category of horizontal slots are our ____ appliances.
These work in the same fashion except instead of the brackets themselves being bonded to labial and buccal surfaces they are bonded to lingual and palate surfaces of the teeth.
lingual
The ligation is similar.
We have an arch wire itself, but instead of going on outer perimeter of dentition, it goes on the inner perimeter of the dentition.
It is held with elastic ligatures.
- What is the advantage of lingual appliances? A. ____ (hides discoloration, etc).
- What are the disadvantages?
A. ____, disability in speech (tongue space), and less ____ tooth movement. It is not as fast because we are working within a ____ perimeter so tooth movement is less efficient.
We have more concerns about ____, lost brackets and tongue irritation, etc.
This was fairly popular a couple years ago, but with Invisalign etc we don’t see this as much anymore.
esthetic discomfort efficient smaller emergencies
Vertical slot
Veritically slotted brackets are called the “____ appliance”.
Begg
Vertical slot
Instead of having the individual slot in the center of the bracket itself, the vertically slotted bracket has an arch wire thats going to slide into a gingival slot, then we have these little brass pins that are going to hold it in place, and then are bent up a the incision edge.
Place the wire itself into they vertical slot, place a brass pin to hold it in place, then turn up the brass pin on the incised edge to hold the wire in.
This is the BEG SYSTEM. We use this in clinic.
Advantage: Superior ____ mechanics. Great for closing ____ if you have an extraction, etc.
Disadvantage: Difficulty in ____ control. Usually this uses ____ wire, and it is harder to use rectangular wire if you want tip control, etc.
sliding
space
round
Self-ligating (SPEED)
This is probably the most latest and best in ortho rn.
No need for ____ ligature or elastics.
stainless steel
Self-ligating (SPEED)
You open the specialized clip, then to close it down, you put pressure on the upper aspect, it clips into place and ligates the wire in place.
The clip is a ____, so you have some control. (However, some are stainless steel, some are titanium alloy, so it is going to vary.)
titanium alloy
Self-ligating (Damon)
The most popular self ligating bracket in the US is the ____ bracket.
Similar specialized clip, but the bracket looks more like a ____ bracket, versus the SPEED bracket, which looks more like a ____ bracket.
All the self-ligating ones have a clip that opens up and down like this and then you close it and lock the arch wires in place. It is ____ in a sense that you open it up and down.
The clips don’t open ____ because it could be painful for the patient.
damon siamese mono-wing vertical outward
