Patient: 64 yr old Hispanic Male
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Pt presents with
Parkinson’s disease.
Pt reports eating a lot
of lemons.
Pt uses a medium
bristle toothbrush.
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ABFRACTION
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Pathologic loss of tooth
structure from biomechanical
forces on the tooth (tooth
flexion, compression, and
tension) along with chemical
degradation, most visible as a
V-shaped notches in cervical
area of tooth. -Darby
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Abnormal tooth Flexure
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In vitro studies and Finite
Element Analysis (Geramy &
Sharafoddin, 2003)
demonstrated that tooth flexure
disrupts the bonds between
enamel rods, causing
microfractures and, eventually,
loss of tooth substance
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How to Evaluate:
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Check for signs of TMD
Check maximum opening
Check for corrosive
factors
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Acidic diet
Acid reflux
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decompressor
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Evaluate for toothbrush
abrasion.
Deep abfraction with dentin exposure.
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Chan, D., Browning, W., Pohjola, R., Hackman, S.,
Myers, M. (2006) Predictors of non-carious loss of
cervical tooth tissues. Operative Dentistry, 31(1),
84-88.