Non Carious Facial lesions Flashcards
Define erosion
chemical action that wears the teeth
Define attrition
tooth wear caused by tooth- to- tooth contact
Define abrasion
lose of tooth structure from something other than tooth contact
Define Abfraction
Mechanical loss of tooth structure in the cervical area that occurs due to occlusal stress
Abrasion results in __ shaped notches in the teeth
V
(T/F) Teeth damaged by abrasion may be sensitive to hot/cold
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Give some examples of how abrasion can result in non-crious tooth loss
- Excessive tooth brushing
- abrasive toothpaste
- Removable app.
Describe the mechanism of tooth loss that occurs during abfraction
the teeth flex under an occlusal load and is transmitted to the cervical area resulting in the fracture of enamel rods
Why is it that the cervical region of the tooth is what is affected by abfraction
enamel is the thinest (and thus the weakest) in the cervical region
Abfraction results in _ shaped notches
V
When should you treat (or operate) on teeth that have suffer non-carious wear
- Sensitive to thermal changed
- Esthetic concerns
- Nuisance- food collects
- Strength of the tooth is threatened
What are three different treatments for these different non-carious factors that erode the tooth structure away
- Fluoride for sensitivity
- Bonded restorations
- Adjustments to occlusion
Why is it that bonded restorations can alleviate non-carious tooth erosion
that don’t eliminate the stress but they help distribute the stress differently
What are the reasons for why we bevel?
- Thickness begins at the DEJ longing for better bonding
- Provides mechanical retention
- Esthetics (change the length to just the esthetics
By definition what are the differences between finishing and polishing
- Finishing= contouring the restoration
- Polishing= shining the restoration
