Which of the following is dental formula of a 9 years old child_____________? July 13, 2019 – by admin Which of the following is dental formula of a 9 years old child_____________? A. 6 EDC21/ 6EDC21 B. 6EDCBA/ 6EDC21 C. EDC21/EDC21 D. 76EDC21/ 7EDC21