Peg lateral incisors describes a condition where the second tooth on either side of the upper front teeth (tooth number 7 & 10 - Universal Tooth Numbering System) does not develop correctly and is small, often pointed, and looks like a cone. Sometimes, the permanent adult teeth do not develop at all, leaving only the baby teeth or primary teeth in place. While some people refer to these teeth as peg laterals, a true peg lateral incisor is a term reserved for the under-developed adult permanent t

A supernumerary tooth is an extra tooth. Typically, humans have sets of 20 baby teeth and 32 permanent teeth (assuming all four wisdom teeth develop), as shown in the diagrams below. If a person has one or more teeth that are additional to these typical sets of teeth, the person is said to have hyperdontia, and the additional teeth are known as supernumerary teeth.#Dentistry #Tooth #teeth