GREEN night guard

D

danalab

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Never had this happen before but we have made 2 night guards for a patient that keeps turning green. She says she is not doing anything odd with it but it is a green color now. It is a hard acrylic night guard. Any one else????
 
rkm rdt

rkm rdt

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Is the green on the external or internal surface/
 
JMN

JMN

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sidesh0wb0b

sidesh0wb0b

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are they dropping it in green or blue mouthwash when not in use?
 
ND2020

ND2020

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are they dropping it in green or blue mouthwash when not in use?
This would be my first guess. Oddly enough, I had a green tinged night guard come in for repair last week (supposd to be clear). Once I started grinding it, there was a strong minty odor. I steam cleaned it, ran it through an ultrasonic, and bead-blasted the interior surfaces (not in that particular order). After polishing, it cleared up quite a bit.
 
K

kettlebell

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I would bet she is soaking it in mouthwash overnight.
 
kcdt

kcdt

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PMMA imbibes water. 5-7% of volume, iirc.
Color goes along for the ride.

.3-.4%. I guess I don't recall correctly...
 
WENDY INOUE

WENDY INOUE

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My night guard turned yellow after dipping it into listerine...
 
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