Family Friendly & Specialty Dentists in London, UK
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Structure and Types of Incisors
- Adult humans have eight incisors, two of each type.
- Types of incisors: maxillary central incisor, maxillary lateral incisor, mandibular central incisor, mandibular lateral incisor.
- Children with deciduous teeth also have eight incisors, named the same way as permanent teeth.
- Tooth eruption and development determine the number of incisors in young children.
- The order of eruption for primary teeth: mandibular central incisors, maxillary central incisors, mandibular lateral incisors, maxillary laterals.
Incisors in Different Animals
- The number of incisors varies among different animal species.
- Opossums have 18 incisors.
- Armadillos have no incisors.
- Cats, dogs, foxes, pigs, and horses have twelve incisors.
- Rodents have four incisors.
Function of Incisors
- In cats, incisors are small, and meat is bitten off with canines and carnassials.
- Elephants have modified upper incisors as curved tusks.
- Rodents' incisors grow continuously and are worn by gnawing.
- Human incisors are used to cut off pieces of food and grip other food items.
Additional Images
- Arrangement of incisors in an adult human.
- Mouth (oral cavity).
- Left maxilla. Outer surface.
- Base of skull. Inferior surface.
Related Topics
- Canine tooth.
- Molar.
- Premolar.
- Shovel-shaped incisors.
- References.
