Mandibular And Maxillary Development

Question 1

Symphyseal cartilage

Answer 1

Appears after the coronoid cartilage and disappears by the end of the 1st year after birth.
They are 2 in number, appear within the mesenchyme separating the 2 Meckel’s cartilage but are totally independent of it.
They undergo endochondral ossification and give rise to:
Symphysis of the mandible which enlarge and fuse within the 1st year of life.

Question 2

Dental presentation of apert syndrome

Answer 2

:

underdeveloped maxilla, cleft palate, missing or crowded teeth.