This image is used to orient on the formation of primary and permanent teeth. Focusing on the lower teeth in this xray, you may notice it seems that some small teeth are floating on top of larger more developed teeth. These floating teeth are primary teeth while the teeth with longer more developed roots are the permanent teeth. The etiology of<unk>  is not very commonly known. However, it is thought to be related to: * Traumatic injury that may have taken place to the deciduous teeth, also known as baby teeth. * Idiopathic developmental disturbance, meaning it is unknown * An ankylosed deciduous tooth, meaning a baby tooth that is permanently attached to the jaw bone * And the presence of supernumerary teeth, meaning an individual that is born with extra teeth * Smith-Magenis syndrome * Axenfeld-Rieger syndrome * Cysts * Tumors
Dilaceration
Nipple discharge
Inspissation
Retroperitoneal fibrosis
Pneumatosis
Ileosigmoid knot
Pulp stone
Needle remover