Anatomy & physiology /certified fixed orthodontic courses by Indian dental academy

Dental Anatomy
and Masticatory Dynamics

INDIAN DENTAL ACADEMY
Leader in continuing dental education
www.indiandentalacademy.com


Today
 Intro

faculty
 Distribute Manual / Discuss Resources
 Intro lecture
 Mock Quiz
 Review Quiz


Faculty
 Ilze

Bekeny
 Francis Curd
 T. Roma Jasinevicius
 Jay Joseph
 Louis Juliano
 Tania Markarian

DAMD Offices
 Next

to DentSim Clinic
 In BLUE manual
– Telephone numbers
– E-mail numbers


Text / Resources



Notes
CD


Lecture



Welcome
CWRUDay 1 of
your
professional
career
the rest of
your life!!! –


From Apprentice


George Washington’s ‘Teeth’


20th century dentures


From apprentice
to
professional


Restorative Dentistry
on typodont
Procedures executed by
2nd year Dental Student

Start
notes
from here

Masticatory /
Gnathological System


Masticatory /
Gnathological system


Masticatory:
– Pertaining to chewing



Gnathology
– Science that deals with
anatomy, histology,
physiology, pathology of
the jaws and masticatory
system as a whole,
including the applicable
diagnostic, therapeutic and
rehabilitative procedures

Frontal view

Sagittal view of skull:
Jaws:
Maxilla – non-movable
Mandible - movable

Temporomandibular jt


Mixed Dentition:
Primary /Deciduous and Permanent


Determination of age from teeth present


6 year molar


LI + CI
8 yr 7
yr

Permanent Teeth


Maxillary
ANTERIOR

Mandibular
ANTERIOR


Anterior Teeth
 Maxillary

– Central Incisor (2 – right and left)
– Lateral Incisor (2 – right and left)
– Canine (2 – right and left)
 Mandibular

– Central Incisor (2 – right and left)
– Lateral Incisor (2 – right and left)
– Canine (2 – right and left)

Maxillary
PreMolars

Mandibular
PreMolars

Posterior Teeth - PreMolars
 Maxillary

– 1st Premolar (2 – right and left)
– 2nd Premolar (2 – right and left)
 Mandibular

– 1st Premolar (2 – right and left)
– 2nd Premolar (2 – right and left)


Maxillary
Molars

Mandibular
Molars

Posterior Teeth - Molars
 Maxillary

– 1st Molar (2 – right and left)
– 2nd Molar (2 – right and left)
– 3rd Molar (Wisdom tooth) (2 – right and left)
 Mandibular

– 1st Molar(2 – right and left)
– 2nd Molar (2 – right and left)
– 3rd Molar (Wisdom tooth) (2 – right and left)

Division


Arches
– Maxillary



Mandibular

Quadrants
– Maxillary Arch
• Right quadrant
• Left quadrant



Mandibular Arch
Right quadrant
Left quadrant

Sextants
– Maxillary Arch
• Right posterior sextant
• Anterior sextant
• Left posterior sextant

Mandibular Arch
Right posterior sextant
Anterior sextant
Left posterior sextant


Maxillary Arch


RIGHT
LEFT
Left


Maxillary Arch

Max Right
quadrant


Maxillary Arch

Max Left
quadrant


Maxillary Arch
Max Left
Posterior
sextant

Max Right
Posterior
sextant


CROWN
coronal
Cervical line
ROOT
radicular


Incisal (ant)
Occlusal (post)
CROWN
coronal

Cervical line

ROOT
radicular
APEX
apical

Right

Midline


Left

Right

Midline

Left

Mesial – towards midine
Distal

Away from midline


Right

Midline

M
D
M
D


Left

Right
UNIVERSAL
SYSTEM

7

8

9

Left

10

6

11

5
4
3

14

2
1

15

-missing

missing

16

Mandible numbering system
32 missing

missing

31

18

30

19

29
28
27

26

22
25/24 23


20
21

17

Name / number the teeth
Using Universal # System


Name / number the teeth
Using Universal # System!

45

6

7

8


9 10 11

8

9


More terminology
FACIAL
View


More terminology
 Views

/ aspects of teeth

– Facial
– Lingual
– Mesial (a proximal surface)
– Distal ( a proximal surface)
– Occlusal (posterior) / Incisal (anterior)


#8

midline

DISTAL

MESIAL
INCISAL

Facial
View

Apical
Facial View

Mesial

Distal


Incisal

Apical
APICAL
MIDDLE
CERVICAL
CERVICAL
Mesial
MIDDLE

Distal

INCISAL
Incisal


Apical

Mesial

Middle

middle

Mesial Middle
Incisal

Distal
Distal

Proximal
View
Apical
Facial

Middle

Lingual

Cervical
Cervical
Facial

Middle
Incisal

Lingual


Proximal

Facial

Trapezoid

Triangle
Incisors

PM

Molars

Rhomboid
PMwww.indiandentalacademy.com
Molars

Facial of all teeth - trapezoidal


Break time – 10 minutes


Continue with terminology…


Contact areas


Area on proximal surface of a tooth – either
M or D – when teeth are in good alignment
– which touches adjacent tooth


Variations yet
characteristics for identification


Maxillary Incisors
Purpose
Along with mandibular incisors
– Esthetics
– Phonetics - speech
– Incising / cutting


Information* and Photos with black background – Tooth
Atlas

* Information with asterisk from Tooth Atlas CD

Maxillary Central Incisor
Development*
The initiation of calcification is between 3
and 4 months.
 The completion of enamel formation is 4 to
5 years.
 The eruption is between 7 to 8 years.
 Root development complete at 10 years.



Why DA ?


5 views of teeth


Facial
– Labial (anterior)
– Buccal (posteriors)






Lingual
Mesial
Distal
Incisal / Occlusal
– Ant / posterior

Maxillary Central - #8 Facial view


Crown:Root -

11mm: 13 mm



M-Inc Corner -

90 degrees



D-Inc Corner -

rounded



M contact D contact -



(Incisal/Middle)
D


Incisal
Junction

Maxillary Central - #8 Facial view


Size
– MD
– Inc-Cerv



M outline



D outline


widest ANT tooth
longest Crown

straight
sltly rounded

Maxillary Central - #8 Lingual view


Marginal ridges (MR)
– MMR > DMR
– Moderately pronounced



Cingulum
– D located



Fossa
– Moderate depth


Maxillary Central - #8 Mesial view


Incisal Edge

sltly F to .
root axis



Facial surface



CEJ (cervical line) deeper on M



Root:

flat

– M surface – flat w/ depression
– (D surface – convex w/ no depression)


Maxillary Central - #8 Distal view


Incisal Edge

sltly F to .
root axis



Facial surface






Root:

flat

– (D surface – convex w/ no
depression)

Maxillary Central - #8 Incisal view


Geometric
– Triangular
– MD > FL
–



Facial
– flat



Cingulum
– Distal location


Maxillary Lateral Incisor
Most variable ANTERIOR tooth


Maxillary Lateral - #7 Facial view


Crown:Root -



M-Inc Corner -



D-Inc Corner -

v. rounded



M contact D contact -

Junction*
Middle



10mm: 13 mm

*(Incisal/Middle)

rounded

Maxillary Lateral - #7 Facial view


Size
– MD
– Inc-Cerv

smaller than CI
shorter CI



M outline

rounded



D outline

v. rounded


Maxillary Lateral and Central - #7 - #8 Facial view


Maxillary Lateral - #7 Lingual view


Marginal ridges (MR)
– MMR > DMR
– More than CI



Cingulum
– More pronounced than CI
– Centered



Fossa
– Moderate depth
– Pits / groove variation


Maxillary Lateral - #7 Mesial view


Incisal Edge

sltly F to .
root

axis


Facial surface

more rnd






Root:
– (D surface – flat / no depression)


Maxillary Lateral - #7 Distal view


Incisal Edge

sltly F to .

root axis


Facial surface

more rnd



CEJ (cervical line) deeper on
M



Root:
– (D surface – flat / no depression)


Maxillary Lateral - #7 Incisal view


Geometric
– Rnded
– MD > FL
–



Facial
– rnd



Cingulum
– Centered


It’s been so lovely!!!
Next session –
Quiz and bring typodonts (we will provide prep)
For LAB: bring matches (lighter) and stockings!!!!
stockings


Thank you
Leader in continuing dental education


Anatomy & physiology /certified fixed orthodontic courses by Indian dental academy

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