Neonatal teeth the normal allotment of teeth. Most often natal teeth are mandibular central incisors. They have little root structure and are attached to the end of the gum by soft tissue and are often mobile. Most of the time, natal teeth are not related to a medical condition. However, sometimes they may be associated with: No intervention is usually recommended unless they are causing difficulty to the infant or mother. However some recommend that they be removed as the tooth can cut or amputate the tip of the tongue. They should be left in the mouth as long as possible to
Hinge teeth teeth in a bivalve shell is often essential for identification and classification. A formal terminology is used to describe the different types of dentition. The hinge teeth, or the lack thereof, is an important feature in identifying bivalves because the teeth are generally similar within the major taxonomic groups. Historically the hinge teeth have provided a convenient means by which to construct classification schemes and attempt to indicate the phylogenetic relationships within the class Bivalvia. There are formal names for the various types of hinge tooth arrangements or "dentition". The "taxodont" hinge shows either one or two rows of similar