TaurodontismHuman tooth: The human teeth function in mechanically breaking down items of food by cutting and crushing them in preparation for swallowing and digestion. There are four different types of teeth, namely incisors, canines, molars and premolars.Tooth loss: Tooth loss is a process in which one or more teeth come loose and fall out. Tooth loss is normal for deciduous teeth (baby teeth), when they are replaced by a person's adult teeth.Neonatal line: The neonatal line is a particular band of incremental growth lines seen in histologic sections of a deciduous tooth. It belongs to a series of a growth lines in tooth enamel known as the Striae of Retzius.Talon cuspApical delta: Apical delta refers to the branching pattern of small accessory canals and minor foramina seen at the tip or apex of some tooth roots.Intraosseous eruption: Intraosseous eruption involves the formation of root of a tooth which allows the tooth to being eruption from the bone. This phase precedes the Supraosseous Eruption phase which consists of Infragingival eruption and Supragingival Eruption.HyperdontiaHorse teethIron metallic discoloration: Iron metallic discoloration occurred more frequently in the past when soluble iron compounds were used in the treatment of allergic contact and other dermatitis, and in eroded areas iron was sometimes deposited in the skin, like a tattoo .James, William; Berger, Timothy; Elston, Dirk (2005).OverjetAbfraction: Abfraction is a theoretical concept explaining a loss of tooth structure not caused by tooth decay (non-carious cervical lesions). It is suggested that these lesions are caused by forces placed on the teeth during biting, eating, chewing and grinding; the enamel, especially at the cementoenamel junction (CEJ), undergoes large amounts of stress, causing micro fractures and tooth tissue loss.Enamel spindles: Enamel spindles are "short, linear defects, found at the dentinoenamel junction (DEJ) and extend into the enamel, often being more prevalent at the cusp tips."Histology Course Notes: "Mature Enamel", New Jersey Dental School, 2003-2004, page 2.ConcrescencePulp (tooth): The dental pulp is the part in the center of a tooth made up of living connective tissue and cells called odontoblasts. The dental pulp is a part of the dentin–pulp complex (endodontium).Gomphosis: Gomphosis, also known as the dental-alveolar joint, is a joint that binds the teeth to bony sockets (dental alveoli) in the maxillary bone and mandible. The fibrous connection between a tooth and its socket is a periodontal ligament.Dental avulsion: Dental avulsion is the complete displacement of a tooth from its socket in alveolar bone owing to trauma.Dentin sialophosphoprotein (protein): Dentin sialophosphoprotein is the only protein produced uniquely by odontoblasts, the cells that produce tooth dentin. It is a non-collagenous SIBLING protein that is later cleaved into three functional proteins: dentin phosphoprotein (also known as phosphophoryn), taken from the C-terminal end, dentin sialoprotein from the N-terminal end, and dentin glycoprotein from the middle of the molecule.Dental cariesEndodontic therapy: Endodontic therapy or root canal therapy is a sequence of treatment for the infected pulp of a tooth which results in the elimination of infection and the protection of the decontaminated tooth from future microbial invasion. Root canals and their associated pulp chamber are the physical hollows within a tooth that are naturally inhabited by nerve tissue, blood vessels and other cellular entities which together constitute the dental pulp.MalocclusionEpicanthic fold: Epicanthic fold (), epicanthal fold, epicanthus, or simply eye fold are names for a skin fold of the upper eyelid, covering the inner corner (medial canthus) of the eye. Other names for this trait include plica palpebronasalis and palpebronasal fold..Demineralization (physiology): Demineralization - it is the opposite process of mineralization, a process to reduce the content of mineral substances in tissue or organism, such as bone demineralization, of teeth. Demineralization can lead to serious diseases such as osteoporosis or tooth decay.HypodontiaBundle bone: Bundle bone is a histologic term for the portion of the bone of the alveolar process that surrounds teeth and into which the collagen fibers of the periodontal ligament are embedded.Araujo, M; Lindhe, J: The Edentulous Alveolar Ridge.