Question 258 · LDEK · Epidemiology and risk assessment
The important caries risk factors in the first permanent molars are the anatomy of the fissures and the time of tooth eruption. Find which of the fissures on the occlusal surface given below are deep and tend to accumulate difficult-to-saliva clean dental plaque, and reduce the effectiveness of brushing, which increase caries risk in the first permanent molars:
- A. V, U, IK.
- B. V, U, I.
- C. U, IK, reversed Y.
- D. U, I, reversed Y.
- E. I, IK, reversed Y.
Hint
Use the Nagano fissure classification: wide, shallow fissures are self-cleansing, while narrow, deep or branching ones trap biofilm.
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