Dental Which is the first non-succedaneous tooth to erupt into the oral cavity: A Mandibular central incisor. B Mandibular first molar. C Maxillary first molar. D Maxillary central incisor. 💡 Explanation Which is the first non-succedaneous tooth to erupt into the oral cavity: ✓ Correct Answer: B. Mandibular first molar.