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Incisors are the first kind of tooth in heterodont mammals. In many herbivorous or omnivorous mammals, such as the human and the horse, they are adapted for shearing sharply. In cats, the incisors are small and do not do much; biting off meat is done with the canines and the carnassial s. In elephants, the upper incisors are modified into tusks. The incisors of rodents grow throughout life and are worn by gnawing. Humans normally have eight incisors. Among other animals, some other primates, cats and horses have twelve. The rodents have four; lagomorphs were once thought to be rodents, but are distinguished by having eight.
See also: canine tooth, molarMolars are the rearmost and most complicated kind of tooth in most mammals. In many mammals they grind food, hence the name which means "millstone". Molars differ considerably from one species to another, so there are many terms describing them: Tribosphe.
AnatomyAnatomy (from the Greek anatome from ana-temnein to cut up), is the branch of biology that deals with the structure and organization of living things; thus there is animal anatomy ( zootomy) and plant anatomy ( phytonomy). The major branches of anatomy in
DentistryX-rays can reveal if a person has cavities Dentistry is the practical application of knowledge of dental science (the science of placement, arrangement, function of teeth) to human beings. A dentist is a professional practitioner of dentistry. In most cou
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