parts of the tooth

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Parts of the tooth

Diego Solís Acosta

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Tooth definition

The tooth is a hard anatomical organ, located

in the alveoli of the maxillary bone, in which

different structures that make up the cement,enamel, dentin, pulp and alveolar bone

chamber both united by a periodontal ligament

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Parts of the tooth

� Enamel

� dentine

� dental pulp

� Cement

� periodontal ligament

� Ence

� Alveolar bone

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Tooth

dental pulp

lveolar

one

Gum

periodontal

ligament

Cement

dentine

Enamel

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Enamel

Is a tissue composed of 

hydroxyapatite and protein, is

the hardest tissue in the human

body is translucent, insensitiveto pain because it doesn´t have

nerve endings

Parts of tooth

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dentine

Mineralized tissue, but by less than enamel, is

responsible for the color of teeth. Containing

tubules where odontoblast project. Dentin

provides elasticity to the fragile but hard enamel.

Parts of tooth

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dental pulp

Mesodermal tissue is

composed of a soft tissue

containing blood vessels

that carry blood to thetooth and nerve fibers

that provide sensation to

the tooth

Parts of tooth

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Cement

� Highly specializedconnective tissue. It is a

hard layer, opaque andyellowish dentincovering the root levelof the tooth. It isresponsible forattaching the tooth withthe rest of the mandibleor maxilla.

Parts of tooth

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Periodontal ligament

This structure is a tissue

that surrounds the root

and alveolar bone joins.

Among its features arethe inclusion of the

tooth to the alveolar

bone and resistance to

impact shock.

Parts of tooth

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Gum

Is the part of the buccal

mucosa, its soft and

pink around the neck of 

the teeth and coversthe alveolar bone.

Parts of tooth

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Alveolar bone

Alveolar bone called the

bone of the maxilla and

mandible that contains

or is of the watershedor alveoli, which kept

the roots of teeth

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Dental crown

Part of the tooth is open or visible in the oralcavity. Layer overlying tooth is the enamel, and

can be seen in the functional mouth dental

organ. This portion of the tooth is exposed to

the oral environment on a permanent basis

Morphological structures of the tooth

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� called cervical area is the

union of the crown with

the root and is located in

the marginal gingiva.

Tooth neck

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This part of the tooth is not visible in theoral cavity and that is embedded in the

tooth socket, into the bone, and is covered

with dental cement

Tooth root

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� Dental crown

� Tooth neck

� Tooth root

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Dental development

Primary dentitionAlso called milk teeth start to

lose 5 or 6 years old beingreplaced by permanent teeth

or second dentition dentition

is composed of 10 non-

permanent teeth

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Second dentition or permanent

dentition

� This kind of dentition begins to erupt at 6 or 7 years

old and is teething has 32  pieces which is divided

into four groups: incisors, canines, premolars and

molars these items are final and in theory should lasta lifetime

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Types of teeth permanents

Incisors

Anterior teeth with sharp edges.

Its main function is to cut food.

They have a conical crown and a

root only. The upper incisors are

larger than the lower ones are

usually 8 pieces

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Canine

With a sharp cusp. They

are called tusks in

animals. They are

located next to theincisors and their

function is to tear food.

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Have two pointed cusps. Facilitate the

crushing of food.

Premolars

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Molars

Broad peaks. Have the

same function of the

premolars. The crown

of these teeth may havefour or five bumps, like

two, three or four roots.

They are the largest.

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