Identify of A Permanent Tooth is Most Likely Determined by the Underlying Mesenchyme

When a 6-year-4-month-old Oriental boy (XA) presents for new patient exam, the lower right (LR) deciduous canine (C) is found missing (Fig.1,2).  The LR lateral incisor (B) is at the position of C.  Which of the underlying permanent teeth is missing, lateral or canine? 

Return to Professionals

Xin Wei, DDS, PhD, MS 1st edition 07/04/2016, last revision 07/04/2016