Anatomy & physiology for the dental professionals / dental implant courses

Dental Anatomy
and Masticatory Dynamics
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

Indian Dental academy
• www.indiandentalacademy.com
• Leader continuing dental education
• Offer both online and offline dental
courses

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

Text / Resources
 Notes
 CD

Lecture
 Welcome
CWRU-
 Day 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 Studentwww.indiandentalacademy.com

Masticatory /
Gnathological System
Start
notes
from here

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
 Mandibular
– 1st
– 2nd

Maxillary
Molars
Mandibular
Molars

Posterior Teeth - Molars
 Maxillary
– 1st
Molar (2 – right and left)
– 2nd
– 3rd
Molar (Wisdom tooth) (2 – right and left)
 Mandibular
– 1st
Molar(2 – right and left)
– 2nd
– 3rd
Molar (Wisdom tooth) (2 – right and left)

Division
 Arches
– Maxillary Mandibular
 Quadrants
– Maxillary Arch Mandibular Arch
• Right quadrant Right quadrant
• Left quadrant Left quadrant
 Sextants
– Maxillary Arch Mandibular Arch
• Right posterior sextant Right posterior sextant
• Anterior sextant Anterior sextant
• Left posterior sextant Left posterior sextant

Maxillary Arch

Left
RIGHT
LEFT

Maxillary Arch
Max Right
quadrant

Maxillary Arch
Max Left
quadrant

Maxillary Arch
Max Left
Posterior
sextant
Max Right
Posterior
sextant

CROWN
coronal
ROOT
radicular
Cervical line

Incisal (ant)
Occlusal (post)
CROWN
coronal
ROOT
radicular
APEX
apical
Cervical line

Right Midline Left

Right Midline Left
Mesial – towards midine
Distal
Away from midline

Right Midline Left
M
D
M
D

Right Left8 9
7 10
6 11
5
4
3 14
2 15
1 -missing missing 16
UNIVERSAL
SYSTEM

Mandible numbering system
32 missing missing 17
31 18
30 19
29
28 20
21
27 22
26
25/24 23

Name / number the teeth
Using Universal # System

Name / number the teeth
Using Universal # System!
4 5 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
Facial
View
INCISAL
MESIAL
DISTAL
midline

Apical
Facial View
Mesial Distal
Incisal

Apical
Mesial Distal
Incisal
APICAL
MIDDLE
CERVICAL
CERVICAL
MIDDLE
INCISAL

Apical
Mesial Middle Distal
Incisal
middle
Mesial Middle Distal

Apical
Facial Middle Lingual
Cervical
Cervical
Facial Middle Lingual
Incisal
Proximal
View

Proximal Facial
Incisors
PM Molars
PM Molars
Trapezoid
Rhomboid
Triangle

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 CDwww.indiandentalacademy.com

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 - Incisal
 D contact - Junction
(Incisal/Middle)
D

Facial view
 Size
– MD widest ANT tooth
– Inc-Cerv longest Crown
 M outline straight
 D outline sltly rounded

Lingual view
 Marginal ridges (MR)
– MMR > DMR
– Moderately pronounced
 Cingulum
– D located
 Fossa
– Moderate depth

Mesial view
 Incisal Edge sltly F to .
root axis
 Facial surface flat
 CEJ (cervical line) deeper on M
 Root:
– M surface – flat w/ depression
– (D surface – convex w/ no depression)

Distal view
root axis
 Facial surface flat
 Root:
– (D surface – convex w/ no
depression)

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 - 10mm: 13 mm
 M-Inc Corner - rounded
 D-Inc Corner - v. rounded
 M contact - Junction*
 D contact - Middle
*(Incisal/Middle)

Facial view
 Size
– MD smaller than CI
– Inc-Cerv shorter CI
 M outline rounded
 D outline v. rounded

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

Lingual view
 Marginal ridges (MR)
– MMR > DMR
– More than CI
 Cingulum
– More pronounced than CI
– Centered
 Fossa
– Moderate depth
– Pits / groove variation

Mesial view
root
axis
 Facial surface more rnd
 Root:
– (D surface – flat / no depression)

Distal view
root axis
 Facial surface more rnd
 CEJ (cervical line) deeper on
M
 Root:
– (D surface – flat / no depression)

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 stockingsstockings!!!!

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