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23 Cards in this Set
- Front
- Back
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PPE -?
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Personal Protective Equipment (includes gloves, mask, eye protection, etc)
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- Types of class 5 lesions – 2 ?
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Gingival/Cervical ⅓ of facial and lingual surfaces in BOTH posterior & anterior teeth
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- Where do they occur?? Class 5s that is....
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Gingival/Cervical ⅓ of facial and lingual surfaces in BOTH posterior & anterior teeth
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- What 2 categories are used to describe the materials used to restore teeth?
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Esthetic & nonesthetic material (Esthetic includes composite and glass ionomer and nonesthetic includes amalgam)
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- Difference between cervical and root caries… which one is more accurate?
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They are often used interchangeably, but Cervical Caries is more accurate
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- Does the color of a lesion always indicate caries?????
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No, you can have colored lesions without having caries
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- When you are deciding how to treat a patient( materials, prep design, etc) what do you need to know to make the right treatment decision for the patient? Several factors…age….????
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Donno
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- Advantages and disadvantages of amalgam?
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ADVANTAGES
· Stronger · Easier to place · Easier to finish · Cheaper · Silver color DISADVANTAGES · Aesthetics · Less conservative preparation HG???(Slide 41) (I remember Dr. Carroll saying yesterday that the mercury in amalgam is different from the mercury people are afraid of?) |
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- What initially dictates the outline form???? What is the final factor that determines how much tooth structure is removed??
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Caries dictates the outline form. How much tooth you remove is determined by the restorative material that you will use (Must remove more when prepping for an amalgam restoration).
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- What is the depth of an amalgam prep (Class 5 ) …above the DEJ and below…
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Depth of prep is 0.2mm to 0.5 mm into the dentin inside the DEJ and 0.75mm inside the cementum (slide #53)
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- What are examples of secondary retention? Remember primary retention is the original prep design… in amalgam converging walls…
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Grooves should be placed in the dentin of both occlusal and gingival walls. Larger preps may benefit from the placement of pins or other retentive devices.
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- What is the cavo surface angle on composite class 5 preps?
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≥ 90 degrees (slide 35)
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- Do composite restorations require more or less removal of sound tooth structure? Remember the concept of conservation of tooth structure…
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Composites require less removal of sound tooth structure, it is a more conservative restoration
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- What are some contraindications to composite restorations? Xerostomia, ……several more..
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1) An operating area that cannot be adequately isolated
2) Class V restorations in areas that are not esthetically critical 3) Restorations that extend onto the root surface. (Due to contraction gap formed between the root and the composite.) |
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- Isolation of the tooth ..how important?
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Very
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- Glass ionomers…advantages….less tooth preparation….several more
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Advantages
· Inherent adhesion (chemical bond) to tooth · structure · High retention rate · Little shrinkage and good marginal seal · Fluoride release and hence caries inhibition · Biocompatible · Minimal cavity preparation required hence easy · to use on children in and suitable for use even in · absence of skilled dental manpower and facilities Disadvantages · Brittle · Soluble · Abrasive · Water sensitive during setting phase. · Some products release less fluoride than conventional GIC · Not inherently radiopaque though addition of radiodense additives such as barium can alter radiodensity Less aesthetic than composite |
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- Why is tartaric acid added to the GI liquid???
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Improves handling characteristics and working time but shortens setting time
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- Abfraction… how is the notch characterized? Shape?
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V shape notch also called stress corrosion
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- Abrasion …..how is the lesion described? Shape?
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Loss of tooth structure from foreign substance
Scooped out depression |
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- What is erosion? What are some factors/ conditions that can cause it? Bulimia,…..others???
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Loss of tooth structure from Chemical dissolution
Bulimia, diet and culture |
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Know the C factor
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-ratio of bonded to unbonded surfaces. Stresses are higher, the higher the C factor. The higher the C factor, the greater the chance for disruption. See pic below.
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- Total etch …what is the strongest bond???
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Composite bonds to enamel strongest in the total etch technique
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What determines the ultimate success of a restoration?
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Read the Instructions
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