Dentition
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Dentition
Dentition pertains to the development of teeth and their arrangement in the mouth In animal anatomy Anatomy (Greek ''anatomē'', 'dissection') is the branch of biology concerned with the study of the structure of organism In biology, an organism (from Ancient Greek, Greek: ὀργανισμός, ''organismos'') is .... In particular, it is the characteristic arrangement, kind, and number of teeth in a given species at a given age. That is, the number, type, and morpho-physiology (that is, the relationship between the shape and form of the tooth in question and its inferred function) of the teeth of an animal. Animals whose teeth are all of the same type, such as most non-mammalian vertebrates, are said to have ''homodont In anatomy Anatomy (Greek ''anatomē'', 'dissection') is the branch of biology concerned with the study of the structure of organism In biology, an organism (from Ancient Greek, Greek: ὀργανισμός, ''organismos'') is any ...
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Tooth Development
Tooth development or odontogenesis is the complex process by which tooth, teeth form from embryonic cells, cell growth, grow, and erupt into the human mouth, mouth. For human tooth, human teeth to have a healthy human mouth, oral environment, all parts of the tooth must develop during appropriate stages of fetal development. Deciduous teeth, Primary (baby) teeth start to form between the sixth and eighth week of prenatal development, and permanent teeth begin to form in the twentieth week.Ten Cate's Oral Histology, Nanci, Elsevier, 2013, pages 70-94 If teeth do not start to develop at or near these times, they will not develop at all, resulting in hypodontia or anodontia. A significant amount of research has focused on determining the processes that initiate tooth development. It is widely accepted that there is a factor within the tissues of the first Pharyngeal arch 1, pharyngeal arch that is necessary for the development of teeth. Overview The tooth germ is an aggregation of ...
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Homodont
In anatomy, a heterodont (from Ancient Greek, Greek, meaning 'different teeth') is an animal which possesses more than a single tooth morphology (biology), morphology. In vertebrates, heterodont pertains to animals where teeth are differentiated into different forms. For example, members of the Synapsida generally possess incisors, Canine (tooth), canines ("eyeteeth"), premolars, and molars. The presence of heterodont dentition is evidence of some degree of feeding and or hunting specialization in a species. In contrast, homodont or isodont dentition refers to a set of teeth that possess the same tooth morphology. In invertebrates, the term heterodont refers to a condition where teeth of differing sizes occur in the hinge plate, a part of the Bivalvia. References See also

* Diphodonty Zoology Dentition types {{animal-anatomy-stub ...
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Heterodont
In anatomy Anatomy (Greek ''anatomē'', 'dissection') is the branch of biology concerned with the study of the structure of organism In biology, an organism (from Ancient Greek, Greek: ὀργανισμός, ''organismos'') is any individual conti ..., a heterodont (from Greek#REDIRECT Greek Greek may refer to: Greece Anything of, from, or related to Greece Greece ( el, Ελλάδα, , ), officially the Hellenic Republic, is a country located in Southeast Europe. Its population is approximately 10.7 million as of ..., meaning 'different teeth') is an animal Animals (also called Metazoa) are multicellular eukaryotic organisms that form the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, ... which possesses more than a single tooth morphology Morphology, from the Greek and meaning "study of shape", may refer to: Disciplines * Morphology (archa ...
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Diphyodont
A diphyodont is any animal with two successive sets of teeth A tooth (plural teeth) is a hard, calcification, calcified structure found in the jaws (or mouths) of many vertebrates and used to Mastication, break down food. Some animals, particularly carnivores, also use teeth for hunting or for defensive p ..., initially the "deciduous In the fields of horticulture and botany, the term ''deciduous'' (; ) means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed leaves, usually in the autumn; to the shedding of petal up ..." set and consecutively the "permanent Permanent may refer to: Art and entertainment *Permanent (film), ''Permanent'' (film), a 2017 American film *Permanent (Joy Division album), ''Permanent'' (Joy Division album) *Permanent (song), "Permanent" (song), by David Cook Other uses *Perma ..." set. Most mammals are diphyodonts—as to chew their food they need a strong, durable and complete set of teeth. ...
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Polyphyodont
A polyphyodont is any animal whose teeth A tooth (plural teeth) is a hard, calcified Calcification is the accumulation of calcium salts in a Tissue (biology), body tissue. It normally occurs in the formation of bone, but calcium can be deposited abnormally in soft tissue,Miller, J. ... are continually replaced. In contrast, diphyodontA diphyodont is any animal with two successive sets of teeth A tooth (plural teeth) is a hard, calcification, calcified structure found in the jaws (or mouths) of many vertebrates and used to Mastication, break down food. Some animals, particular ...s are characterized by having only two successive sets of teeth. Polyphyodonts include most toothed fishes, many reptiles such as crocodile Crocodiles (family In human society A society is a Social group, group of individuals involved in persistent Social relation, social interaction, or a large social group sharing the same spatial or social territory, typically subj ...s and ...
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Adult Teeth
Permanent teeth or adult teeth are the second set of teeth A tooth (plural teeth) is a hard, calcified Calcification is the accumulation of calcium salts in a Tissue (biology), body tissue. It normally occurs in the formation of bone, but calcium can be deposited abnormally in soft tissue,Miller, J. ... formed in diphyodontA diphyodont is any animal with two successive sets of teeth A tooth (plural teeth) is a hard, calcification, calcified structure found in the jaws (or mouths) of many vertebrates and used to Mastication, break down food. Some animals, particular ... mammals Mammals (from Latin Latin (, or , ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken in the area around Rome, known as Latium. Through the power of the R .... In humans and old world simians, there are thirty-two permanent teeth, consisting of six maxilla The maxilla (plural: ''maxillae'' ) in verte ...
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