Pediatric Dentistry · single question
A bitewing radiograph of a child shows primary teeth S, T (primary molars) and eruption of the first permanent molar (#30). What is the approximate age of the child?
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Correct answer: A. 6–7 years
✓ A) 6–7 years is correct.
The first permanent molars (#3, #14, #19, #30) erupt at approximately 6–7 years of age — hence the name 'six-year molars.' If the primary second molars (S and T in the primary dentition notation) are still present along with an erupting or newly erupted first permanent molar, the child is in the transitional/early mixed dentition stage at approximately 6–7 years old.
The first permanent molars (#3, #14, #19, #30) erupt at approximately 6–7 years of age — hence the name 'six-year molars.' If the primary second molars (S and T in the primary dentition notation) are still present along with an erupting or newly erupted first permanent molar, the child is in the transitional/early mixed dentition stage at approximately 6–7 years old.
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