Description

The peg-shaped conical tooth is the supernumerary tooth most commonly found in the permanent dentition. It develops with root formation ahead of or at an equivalent stage to that of the permanent incisors and usually presents as a mesiodens.1

Tooth malformations such as conical incisors and conical canines are commonly seen in hypohidrotic ectodermal dysplasia males and may also occur in heterozygous females to a less severe degree.2

Wormian bones are small bones that are often found within the sutures and fontanelles of the skull. They are often considered to be a simple anatomical variation. Nonetheless, they are more commonly seen in patients with certain kinds of bone dysplasia such as cleidocranial dysostosis, pycnodysostosis, congenital hypothyroidism, rickets and osteogenesis imperfecta. These bones are very common and sometimes occur in high numbers in children even when there is no history of osteogenesis imperfecta, and they are usually considered to be a simple anatomical variant …