Download - Bending BWS primer
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Learning to Bend wire
Purpose: To give you the skills and confidence
to make and use the Farrell Bent Wire
System
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1) Unbend a paper clip...by hand
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Unbend clip by plier
•Walk the plier around the curve to get a straight line
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Extra-credit....re-bend the clip
(If you can do this, you’ll have all the plier skills you’ll need...)
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Small Bends•Bend around the Round Beak•90o bend
Round Beak
Square Beak
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Small Bends•Keep the second bend “on plane” (flat on the paper)
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Small Bends•Do three more 90o bends, all on plane
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Medium Bends•Use the second step of the loop forming plier, or the middle of the bird beak plier•180o bend, this time
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Large Bends•Use the thickest part of the loop forming plier or the bottom of the bird beak•Alternate: Small 90o, Large 180o
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Bend an Arch Form•Hollow Chop•“Spin” it
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BWS loop•How many bends does this loop have?•What size are the bends?
Answer: Four
Small(90)Small(90) Medium(180)Large (180)
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BWS Loop1)Make a small bend to 90 degrees 2)Make a Large bend 180 degrees. Keep the wire flat. 3)Make a small bend 90 degrees. Still flat.4)Make a Medium bend 180 degrees. 5)Voila! Your first BWS loop.
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Supply Tray
Model (with
Bands)
Pencil, Marker Bird Beak
Heavy Wire Cutter
.028 SS wire
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Using a Template•Creating a flat paper template•Good for learning•Easier to use than the model
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Visualize the contact points
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Mark points of contact
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Mark loop locations
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Put marked model on the photocopier
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Cover with cloth or paper towel
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Photocopy
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Connect the lines
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Keep the model nearby for reference
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Start in the midline
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Follow the lines...
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...keeping the wire flat.
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A little overbent, so...
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...so correct it.
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Follow along the line
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Perfect all around
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Take it to the model
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Bending an “Ideal” BWS
•Not adapted to the rotations•Has an “ideal” (smooth) arch form
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Mark points of contact
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Mark loop locations
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Visualize the contact points
![Page 36: Bending BWS primer](https://reader038.vdocuments.mx/reader038/viewer/2022102323/53fdae8d8d7f722b7e8b472e/html5/thumbnails/36.jpg)
“Spin” the wire and adjust to the the contact points
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From the side
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Done
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Bending an“Adapted” BWS
•Follows the contours of the rotated teeth•Contacts surfaces
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Mark the model where you want contact
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Start bending from the midline, work right, then left
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Make sure it lies passively
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Go to the other side
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Bending the Loop
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Locate point for Loops
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Mark the wire
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Pick up next to the mark...
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...round beak toward bend
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Set the angle of the loop Plane of the
BWS (occlusion)
Plane of the bend: always perp to plier Upper = 25o
Lower = 10o
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Bend around the round beak
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The first bend: small 90
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Ready for the second bend
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2nd Bend: large 180
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The Second Bend
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Next: Small 90
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Third bend
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Next: Small 180
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The Fourth Bend
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the Fourth Bend
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Adjust loop and distal leg
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Adjusting the Legs: Horizontal plane
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Adjust Angle of Loop
Gingival Gingival ImpingementImpingement
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Adjust angle of loop
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Adjust the Legs: Vertical plane
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Loop’s too high
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Now tipped down
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Good
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Cut off extra
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One last case...
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Adapted BWS
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Make your marks
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From above...
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... the photocopy
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Start your bends and adjust
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...work around...
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...set aside for try-in.