Dental Terminology, Elevations & Depressions, Handout #1, & Handout #2

The study of the development, morphology, function, and identity of each of the teeth in the human dentitions

Definition of dental anatomy

Maxillary because they are in the upper jaw, which is the maxilla

The teeth in the upper arch are termed:

Mandibular because they are set in the lower jaw, which is the mandible

The teeth in the lower arch are termed:

The mandible is the moveable member of the two jaws, while the maxilla is stationary

Is the mandible or maxilla moveable?

Midline

The imaginary vertical line, which divides each arch, as well as the body, into two approximately equal halves:

Median plane (midline, midsagital plane)

Identify the plane:

Maxillary (Upper) Right

Maxillary (Upper) Left

Mandibular (Lower) Right

Mandibular (Lower) Left

What are the four quadrant names?

Upper right

Identify the quadrant in blue

Upper left

Identify the quadrant in yellow

Lower right

Identify the quadrant in black

Lower left

Identify the quadrant in purple

Primary dentition

Type of teeth present from 6 months to 6 years:

Mixed dentition (primary & permanent)

Type of teeth present from 6 years to 12 years:

Permanent dentition

Type of teeth present from 12 years until loss of teeth

Deciduous dentition

The teeth of the first or primary dentition:

Permanent dentition

The teeth of the second or adult dentition:

20

How many total deciduous teeth are there?

32

How many permanent teeth are there?

I 2/2 (incisor)

C 1/1 (canine)

M 2/2 (molar)

*represents one side of upper and lower arches

Primary dentition dental formula:

I 2/2 (incisor)

C 1/1 (canine)

P 2/2 (pre-molar)

M 3/3 (molar)

*represents one side of upper and lower arches

Permanent dentition dental formula:

Succedaneous teeth

Permanent teeth that replace primary teeth:

Permanent incisors

Canines

Premolars

Which teeth are succedaneous?

Permanent molars

Which teeth are non succedaneous?

Incisors: central and lateral

The two teeth of each quadrant which are closest to the midline:

Cutting and incising

Function of the central and lateral incisor:

There are four permanent incisors per arch and a total of eight in the mouth

How many permanent incisors per arch? in mouth?

7, 8, 9, 10, 23, 24, 25, 26

What teeth numbers are the permanent incisors?

Canine (aka cuspid)

The third tooth from the midline in each qudrant:

Its function in mastication is cutting, tearing, piercing, and holding

Function of the canine:

There are two permanent canines per arch, and a total of four in the mouth

How many canines per arch? in mouth?

6, 11, 22, 27

What number teeth are canines?

Premolars (aka bicuspids or first and second premolars)

The fourth and fifth teeth from the midline:

Their masticatory purpose is tearing, holding, and grinding

Function of the premolars:

There are four per arch, and eight total premolars

How many premolars per arch? in mouth?

4, 5, 12, 13, 20, 21, 28, 29

What number teeth are premolars?

Molars (first, second, and third molars OR six-year molars, twelve-year molars, and wisdom tooth)

The sixth, seventh, and eighth teeth from the midline:

Grinding

Function of molars:

There are six permanent molars per arch and twelve total molars

How many molars per arch? in mouth?

1, 2, 3, 14, 15, 16, 17, 18, 19, 30, 31, 32

What number teeth are molars?

8 total incisors which are named central and lateral incisors

Incisors of the deciduous dentition:

D, E, F, G, N, O, P, Q

What letter teeth are incisors of the deciduous dentition?

4 total canines (or cuspid)

Canine of the deciduous dentition:

C, H, M, R

What letter teeth are the canines of the deciduous dentition?

8 total molars which are named first and second molars

Molars of the deciduous dentition:

A, B, I, J, K, L, S, T

What letter teeth are the molars of the deciduous dentition?

5 per quadrant

10 per ach

20 total

There are ___________ deciduous teeth per quadrant, ___________ per arch, and a total of ___________ in the primary dentition

1st molar

which tooth is termed 6-year molar?

2nd molar

which tooth is termed 12-year molar?

3rd molar

which tooth is termed wisdom tooth?

anterior teeth

the teeth from canine to canine:

posterior teeth

the teeth from 1st premolar and back:

right maxillary 3rd molar

tooth #1:

right maxillary 2nd molar

tooth #2:

right maxillary 1st molar

tooth #3:

right maxillary 2nd premolar

tooth #4:

right maxillary 1st premolar

tooth #5:

right maxillary canine

tooth #6:

right maxillary lateral incisor

tooth #7:

right maxillary central incisor

tooth #8:

left maxillary central incisor

tooth #9:

left maxillary lateral incisor

tooth #10:

left maxillary canine

tooth #11:

left maxillary 1st premolar

tooth #12:

left maxillary 2nd premolar

tooth #13:

left maxillary 1st molar

tooth #14:

left maxillary 2nd molar

tooth #15:

left maxillary 3rd molar

tooth #16:

left mandibular 3rd molar

tooth #17:

left mandibular 2nd molar

tooth #18:

left mandibular 1st molar

tooth #19:

left mandibular 2nd premolar

tooth #20:

left mandibular 1st premolar

tooth #21:

left mandibular canine

tooth #22:

left mandibular lateral incisor

tooth #23:

left mandibular central incisor

tooth #24:

right mandibular central incisor

tooth #25:

right mandibular lateral incisor

tooth #26:

right mandibular canine

tooth #27:

right mandibular 1st premolar

tooth #28:

right mandibular 2nd premolar

tooth #29:

right mandibular 1st molar

tooth #30:

right mandibular 2nd molar

tooth #31:

right mandibular 3rd molar

tooth #32:

universal dental numbering system

identify the numbering system:

zsigmondy/palmer numbering system

dentify the numbering system:

Maxillary right central incisor

In the zsigmondy/palmer notation system, identify the tooth:

Mandibular left first premolar

In the zsigmondy/palmer notation system, identify the tooth:

Federation Dentaire Internationale (FDI) system

identify the numbering system:

anatomical crown

portion of the tooth which is covered by enamel, regardless of whether it is erupted or not:

clinical crown (the clinical crown may, or may not correspond to the anatomical crown, depending on the level of the tooth's investing soft tissue)

portion of the tooth which is visible in the mouth:

Clinical crown

Only part of the crown that is seen above the gingiva:

anatomical root

portion of the tooth which is covered with cementum:

clinical root (as with the crown, the anatomical root may, or may not, correspond to the clinical root)

portion of the tooth which is not visible in the mouth:

Clinical root (may be shorter or longer than the anatomical root)

The part of a tooth which is under the gingiva and is not exposed to the oral cavity:

enamel

The hard, non-vital highly mineralized tissue, which covers the dentin of the anatomical crown of a tooth:

enamel

hardest tissue of the body:

Enamel

Composed of over 96% inorganic material by weight and 4% water and organic material by weight:

Enamel

Identify the structure

Dentin

Identify the structure

dentin (or dentine)

The hard, cellular, vital tissue which forms the main body of the tooth: