Dentition

Dentition is the development of teeth and their arrangement in the mouth.All mammals except the monotremes, the edentates, the pangolins, and the cetaceans have up to four distinct types of teeth, with a maximum number for each. These are the incisor , the canine, the premolar, and the molar . Mammals that have distinct types of teeth are heterodont; others are homodont.The number of teeth of each type is written as a dental formula for one side of the mouth, with the upper and lower teeth shown on separate rows. The number of teeth in a mouth is twice that listed as there are two sides. In each set, the first number indicates incisors, the second, canines, the third, premolars, and the last, molars. For example, the formula 2.1.2.3 for upper teeth indicates 2 incisors, 1 canine, 2 premolars, and 3 molars on one side of the upper mouth.The human dental formula is:Of cats it is:The last upper premolar and first lower molar of the cat, since it is a carnivore, are called carnassials and are used to slice meat and skin. The armadillo, being homodont, has a dental formula that is simply 7/7. The maximum dental formula for placental mammals is:Non-placental mammals such as marsupials can have more teeth than placentals. The opossum's dental formula is:In many mammals the children have a set of teeth that fall out and are replaced by adult teeth. These are called deciduous teeth, baby teeth or milk teeth. Animals that have two sets of teeth, one followed by the other, are said to be diphyodont. Normally the formula for milk teeth is the same as for adult teeth except that the premolars are missing. The milk tooth formula for humans is:The kitten has 26 teeth.Teeth are numbered starting at 1 in each group, except the premolars which end at 4. This means that the carnassials are always the fourth upper premolar and the first lower molar. Thus the human teeth are I1, I2, C1, P3, P4, M1, M2, and M3. (From the Wikpedia article Dentition.)

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Recent Publications on Dentition:
A retrospective study of intrusive injuries in primary dentition. Objective: The aim was to evaluate epidemiological aspects of intrusive...	18th November, 2009	Department of Paediatric and Preventive Dentistry, Faculty of Dentistry,	Dent Traumatol. 2009 Dec;25(6):605-10. DOI Direct Link
A treatment protocol for restoring occlusal vertical dimension using an overlay removable partial denture as an alternative to extensive fixed restorations: a clinical report. Treatment options for patients with severe attrition resulting in reduced...	17th November, 2009	Dental Resident, Advanced General Dentistry Program, Fayetteville Veterans	Open Dent J. 2009 Oct 30;3:213-8. DOI Direct Link
Quantitative estimation of AgNORs in inflammatory gingival overgrowth in pediatric patients and its correlation with the dental plaque status. Background and Objectives: Nucleolar organizer Regions (NORs) are situated...	17th November, 2009	Department of Paedodontia, Dr. R Ahmed Dental College & Hospital, Kolkata,	J Indian Soc Pedod Prev Dent. 2009 Oct-Dec;27(4):235-41. DOI Direct Link
The effect of posterior bite-plane on dentoskeletal changes in skeletal open-bite malocclusion. With regard to the vertical problem of skeletal open-bite malocclusion,...	17th November, 2009	Department of Orthodontics, Islamic Azad University, Tehran, Iran.	J Indian Soc Pedod Prev Dent. 2009 Oct-Dec;27(4):202-4. DOI Direct Link
Changes in bite force, masticatory muscle thickness, and facial morphology between primary and mixed dentition in preschool children with normal occlusion. The study of stomatognathic system development can provide useful data for...	17th November, 2009	Department of Pediatric Dentistry, Piracicaba Dental School, State	Ann Anat. 2009 Nov 4. DOI Direct Link
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Press Releases About Dentition:
Align Technology Targets Mainstream Orthodontics Market With Invisalign Teen(TM)	29th July, 2008	Align Technology, Inc.	SANTA CLARA, Calif., July 29 /PRNewswire-FirstCall/ -- Align Technology, Inc. (Nasdaq: ALGN) today announced a new addition to its Invisalign product family: Invisalign Teen for non-adult,

Dentition Patents:
US Patent No.	Title
7476100	Guide apparatus and methods for making tooth positioning appliances
7520281	Fixed therapeutic oral appliance
7530811	Automatic crown and gingiva detection from the three-dimensional virtual model of teeth
7536234	Method and system for manufacturing a dental prosthesis
7537452	Photoinitiator systems with anthracene-based electron donors for curing cationically polymerizable resins
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