Dentaltown February 2021 - 43

The Case of the Impinging Lingual Bar
The victim: Lingual Bar.
The accusation: " The bottom of the lingual bar begins
to impinge on the tissue and is rubbed out. "
The investigation: Copycat crime. The MO of the Physics
Gang is all over this. The only difference is, as Lingual Plate
and his silent alarm aren't on the scene, Framework Rotation
isn't detected until Lingual Bar begins to " lay into " the tissue.
The usual suspect: The Physics Gang, Ridge Resorption
and Framework Rotation are at it again and laughing as
Lingual Bar takes the blame and the heat.

The guilty party: The dentist/tech who rubbed out
Lingual Bar, an innocent bystander, to relieve the pressure.
Forensic File #31778: Received the remains of Lingual
Bar battered and beaten almost to the point of breakage.
Doc request that I bulk up Lingual Bar ... but he was too
far gone. He snapped. I sent him back for a decent burial.

The Case of the Broken Clasp
The victim: Clasp.
The accusation: " He just broke. "
The investigation: Clasp never wanted to be a tough guy.
He was supposed to be that sleek and elegant man-about-town.
But with that name, " Clasp, " too many see him in conjunctive
cahoots with the Clamp and Grasp Brothers. They grab a
tooth, and twist and pull, and pull and twist until they can
run away with it. They are responsible for recruiting Partials
into the Slow Extractors Gang.
The usual suspect: Clasp. But in his defense, his choices
were: break or pull the tooth. In which case one might consider
a broken clasp as a blessing in disguise.
The guilty party: Clasp is misunderstood. He was never
meant to be a snatch-and-run guy. He was meant to be an
elegant, almost passive locking device that engages an undercut
and, when possible, disengages under masticating force. His
job was to hold the partial down, not lock the tooth down.

Unfortunately, Clasp can provide a false sense of security
because his partials " snap " in. Poor Design and Excessive
Movement are Clasp's worst enemies. They need to be under
constant surveillance-a doc and patient neighborhood watch
with regular checkups to keep an eye out for Ridge Resorption.
Forensic File #92774: This case reminds me of an older
case but one that, unlike this one, was painfully obvious: the
Broken CEKA attachment. They had a superior " snap-in "
feel to them. When CEKAs got to the point where they were
metal to metal, it became a classic domestic dispute between
male and female. Occasionally the female would triumph and
push the male through the occlusal surface-an easy enough
repair if done to also address the loss of tissue support. But too
often, the female just snaps and is replaced with a new crown
and a new female ... or wire clasp. Many attachments aren't
designed to hold a partial up but to hold them down. Get to
know your attachments!

I hope I've given you something to think about and maybe a new way to look at things.
I know I'll never see the Hoover Dam as anything but the Hoover Arch. ■

dentaltown.com \\ FEBRUARY 2021

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Dentaltown February 2021

Table of Contents for the Digital Edition of Dentaltown February 2021

Dentaltown February 2021 - Intro
Dentaltown February 2021 - Cover1
Dentaltown February 2021 - Cover2
Dentaltown February 2021 - 1
Dentaltown February 2021 - 2
Dentaltown February 2021 - 3
Dentaltown February 2021 - 4
Dentaltown February 2021 - 5
Dentaltown February 2021 - 6
Dentaltown February 2021 - 7
Dentaltown February 2021 - 8
Dentaltown February 2021 - 9
Dentaltown February 2021 - 10
Dentaltown February 2021 - 11
Dentaltown February 2021 - 12
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Dentaltown February 2021 - 18
Dentaltown February 2021 - 19
Dentaltown February 2021 - 20
Dentaltown February 2021 - 21
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Dentaltown February 2021 - 41
Dentaltown February 2021 - 42
Dentaltown February 2021 - 43
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Dentaltown February 2021 - Cover3
Dentaltown February 2021 - Cover4
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