Question 263 · LDEK · Tooth eruption
The time from the appearance of a part of the tooth crown in the mouth to its gaining a contact with the opposing tooth is:
- A. for permanent first molars 12-18 months, and for premolars 1-2 months.
- B. for permanent first molars 1-2 months, and for premolars 12-18 months.
- C. for permanent first molars and premolars 12-18 months.
- D. for permanent first molars and premolars 1-2 months.
- E. for permanent first molars 4 months, and for premolars 5 months.
Hint
Compare the long, gradual eruption of the first permanent molar with the relatively quick eruption of premolars.
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