<prompt> Which is the first non-succedaneous tooth to erupt into the oral cavity:Mandibular central incisor.Mandibular first molar.Maxillary first molar.Maxillary central incisor.  <response>: Mandibular central incisor is the first succedaneous tooth to erupt in the oral cavity.Mandibular 1st molar is the first non-succedaneous tooth to erupt in the oral cavity. 