2535. According to Schour & Massler the crown completion of both permanent maxillary and mandibular first molars is________________? September 27, 2025 by Admin A. 1½ 2 years B. 2½ – 3 years C. 3-4 years D. 3-5 years ✅ The correct answer is option B. 2½ – 3 years.
