Dr. Rooban Thavarajah gave a lecture series on tooth morphology focusing on the deciduous dentition and features of the maxillary lateral incisor. The maxillary lateral incisor is smaller than the central incisor with its crown wider from front to back than side to side. It has more rounded incisal angles, prominent ridges on the inside surface, a deeper pit, and a longer root with a less rounded tip compared to the central incisor.