Question 571 · LDEK · Cavity preparation
Describe a cavity on tooth 21 categorized as Black’s class IV using a classification based on the cavity site and stage:
- A. Si/Sta 3.1.
- B. Si/Sta 3.4.
- C. Si/Sta 2.2.
- D. Si/Sta 2.4.
- E. Si/Sta 4.2.
Hint
Identify the site code for contact areas and the size stage meaning loss of an incisal angle or cusp.
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