### body part | tissue | bone | tooth:

Cheek tooth
* All cheek teeth lack cement and are lowcrowned with transverse ridges and cusps.
* Cheek teeth appear during the first month of life
  - are bunodont in some forms, but more commonly selenodont
* Cheek teeth have high crowns for grinding
  - shapes
  - occur in all families
* Most cheek teeth have roots
* Some cheek teeth have patterns.

Cracked tooth
* Cracked teeth are hard to pin point
  - can be very painful
  - exhibit a variety of symptoms
* Most cracked teeth continue to function for years after treatment.

Deciduous tooth
* Deciduous teeth are soft and can develop sharp edges quickly
  - begin to be replaced from three weeks until approximately four months of age
* Deciduous teeth consist of incisors
  - lower incisors
  - third incisors
  - start to form during the embryo phase of pregnancy
* Most deciduous teeth are replaced with permanent teeth.
* Most deciduous teeth consist of incisors

### body part | tissue | bone | tooth | denticle:

Dermal denticle
* are the scales on the shark's skin.
* protect the skin from damage and are replaced continually.

### body part | tissue | bone | tooth:

Fang
* Most fangs contain poison
  - fill with venom
* Some fangs deliver poison.
* Some fangs have glands
  - venom glands
* Some fangs inject deadly venom
* Some fangs penetrate human skin
  - lungs
* are canines
  - extremities
  - how they defend themselves, just as dogs have teeth
  - humans
  - tooths
* includes bone cells
  - cell membranes
  - corpi
  - cytoplasm
  - enamel
  - ground substances
  - marrow
  - mast cells
  - nuclei
  - plasma membranes
  - pulp cavities
  - root canals
  - sections
  - tooth roots
  - vacuoles
* release venom.

### body part | tissue | bone | tooth | fang:

Venomous fang
* Some venomous fangs deliver poison.
* have half an inch in length.

Front tooth
* Front teeth are permanent
  - pointed for grasping and back teeth are flat and molar-like for crushing
* are tooths.

Hammerhead shark tooth
* Hammerhead shark teeth have cut edges
* Hammerhead shark teeth have smooth cut edges

Healthy tooth
* Healthy teeth affect nearly every aspect of our lives - even our overall health.
* Healthy teeth are a shade of white, shiny, and strong
  - an endangered species
  - white and secure in firm, pink gums
  - can last a lifetime
  - have less cavities
  - stimulate and keep bone tissue healthy and vice versa

Human tooth
* Human teeth are almost as hard as rocks
  - brachydont
  - shaped to chew both meat and plants
  - correspond almost identically to the chimpanzees and other frugivores
* Human teeth have a blood and nerve supply which enables proprioception
  - two basic shapes to chew both kinds of food
* Some human teeth have better mechanical properties

### body part | tissue | bone | tooth:

Incisor
* Most incisors have anterior surfaces
* Some incisors adapt for grass
  - short grass
* Some incisors have layers
* are adapted for nipping off flesh
  - at line
  - compressed and deeply grooved
  - divided further into central and lateral incisors
  - kept sharp by gnawing and bruxing , also called thegosis
  - shallowly grooved
  - sharp and btade-tike for cutting food
  - specialized for gnawing
* are the frontmost teeth in mammals
  - smaller teeth located between the canines on the upper and lower jaws
  - squarish, sharp-edged teeth at the front and middle of the mouth
  - usually simple teeth, though the crown is sometimes lobed
  - white
* close tightly in a scissor bite.
* do form in the embryos, but quickly degenerate and are usually absent by birth.
* grow from the premaxilla, but other upper teeth grow from the maxilla.
  - hard enamel on the front and soft dentin on the back
* includes bone cells
  - corpi
  - plasma membranes
* wear at a relatively consistent rate throughout life.
+ Togo Mouse, Description and natural history: Rodents