1 - Dental Anatomy 101 Dant.pdf

7/28/2019 1 - Dental Anatomy 101 Dant.pdf

1/42


2/42


3/42

DENTAL ANATOMY, MORPHOLOGY AND

Occlusion


4/42

Course Directore

DR. HASSAN I. SAEEDRESTORATIVE DENTAL

SCIENCES.P.N.U


5/42

Course Contributors:

Dr. Noura Omar (Lab.Co-Director)

Dr. Mourad Benhumeralan (Co-Director)Dr. Ebtisam Abdulah

Dr.Fahdah AlqhtaniDr. Sara AlbassamDr. Hala Abdulah


6/42

COURSE DESCRIPTION

The course consists of 2 main components,Dental Morphology and Occlustion both of whichare provided by the RDS Department in the firstsemesters respectively during the first year of theDDS program. It is a course, equivalent to 4 credithours. 132 contact hours


7/42

DENTAL ANATOMY & MORPHOLOGY

This component is designed to provide the student with thebasic elements of tooth morphology as an essential pre-

requisite for other dental courses. The course compriseslectures and practical sessions. Using wax, students restorethe missing coronal surfaces of complete tooth models by awax carving technique. This is designed to reinforce the

theoretical knowledge gained in the lectures, as well ascontribute towards the development of manual dexterity, askill which is essential in the practice of dentistry.Identification of natural tooth specimens forms a significantpart of the practical component of the course .


8/42

At the end of the 1st semester the studentsshould be able to:

1. Apply the terms and expressions usedin dental anatomy and morphologywith proficiency.

2. Record teeth, using different notations, butwith particular emphasis on the methodrecommended by the International Dental

Federation (FDI).


9/42

3. Understand the relationship of teeth to oneanother as well as the relation between theadjacent and opposing teeth, and understandthe Mechanics of Mandibular Movement.

4. Understand the alignments, occlussionand the self-protective feature of the dentition.

5. Distinguish the morphological characteristicsof different kinds of teeth. Thus, there aretraits which separate the teeth of the upper from the lower arches, the molars from theincisors and the first molar from the secondmolar.


10/42

6. Develop his/her manual skills by carving inwax the different missing surfaces of all teeth.

7. Restore in casting wax, the missing surfaces

in Dentoform by carving to normal anatomicaland morphological features.

8. Drawing to scale two dimensions of all teethfollowing the lectures outline, using the table of measurements provided.


11/42

Each student should collect natural teeth, cleanand keep them in 10% formaline. Fail to do thiswill affect his/ her progress and grades.

Important Note:


12/42

To pass this course successfully, studentsmust pass both theoretical and practicalcomponent separately.

1. Quizzes (each lecture)2. 1st.& 2nd Written Examination3. Final Written Examination


13/42

THEORY PRACTICAL

Weekly Quizzes/ Practical 10% 40%

DRAWING PROJECTS 10%

Ist &2 nd LAB / Written 30% 20%

FINAL EXAMINATION- LAB/Written 60% 20%

30%FINAL TEETH IDENTIFICATION Lab . 10%

TOTAL 100% 100%

E VALUATION


14/42

1. Wheeler's, Dental Anatomy,Physiology and Occlusion9 th Edition By : Ash and Nelson

2. Dental Anat.omy : Its relevanceto Dentistry , 6 th Edition By : Julian Woelfel ,

Lea Fabiger .


15/42

INTRODUCTION TODENTAL MORPHOLOGY


16/42


17/42

STRUCTURES THAT FORM THE

FOUNDATION OF TEETH

1-JAW (s)


18/42

TWO JAWS

1- Upper :Is a part of bone called (Maxillae) Right and Left.


19/42

2. LOWER : The part of bone form

the Mandible


20/42

MIDLINE

Is an imaginary vertical line dividing each jaw into

two equal halves.


21/42

So the jaws can be divided into fourquadrant

1. Upper Right Maxillary Rightteeth

2. Upper Left Maxillary Leftteeth

3. Lower Left Mandibular Leftteeth

4. Lower Right Mandibular Rightteeth

1 2

3 4


22/42

1.The upper set - Maxillary Teeth

2.The lower set - Mandibular Teeth

TEETH


23/42

Human dentition are of two types:

1. Primary (Deciduous) dentition2. Permanent Dentition

The transitional phase when bothdentitions are present is calledMixed dentition 6 12 Years.

1

2

Generally..


24/42

The Primary (Deciduous) teeth:

Also called Baby , Milky, or temporary teeth.


25/42

* At birth:

No teeth are visible in the mouth. However,many teeth at various stages of development arefound in the jaws.

The post natal period of development span, isabout two and half years for deciduous dentition


26/42


27/42


28/42

The eruption of permanent teeth begins atapproximately six years and persist

throughout the life span.

* The number of teeth in adults including thethird molar when present, is thirty-two,

sixteen teeth in each jaw.

S i f h idli dProgressing


29/42

Starting from the midline andProgressing posteriorly, teeth are as follows:

1. Central incisor 2. Lateral incisor

3. Canine

4. First Premolar

5. Second premolar

6. First Molar 7. Second Molar

8. Third Molar

1 2 3

4 5

6

7

8

2 4

1 3

5 6

7

8


30/42


31/42

FUNCTION of TEETH

1.Mastication

2.Phonetics

3.Esthetics4.Protection to the periodontium


32/42

Teeth are differ in forms. Accordingly,each of them has its own masticating

function.

1-Mastication


33/42

The Incisors:

* Have got a flat thin edge Incisaledge which is knife -like

s o

* The main function is to cut Incise food by shearing action betweenupper and lower incisors teeth.


34/42


35/42

The Premolars

* Have got two cusps to give usthe ability of tearing food andhelping in mastication

so

* They are supposed as small

molars


36/42

The Molars

* Have a broader occlusal surfaces withmany cusps four -five

s o

* They are helping in :

Cruching

Grinding

Masticating

Through cuspal interdigitation


37/42

* Certain words cannot be pronouncedcorrectly unless front teeth teeth are

present

s o

Teeth have got the function of production and preception of speechsounds

2-Phonetics


38/42

* The cosmetic appearance of the face

is partially a function of teeth

S o

* The absence of any tooth or teeth asin case of edentulous people, theesthetic appearance will be much

destroyed.

3-Esthetics


39/42

The physiologic tooth form protecting the periodontium namely, the gingival tissue andthe attachment apparatus

How?

The gingival tissues depends upon functionalstimulation of food to retain their normal,health character through the normal functionalcontours of teeth.

4-Protection to the Periodontium


40/42

The function of teeth can besummarize as follows:

1. They helps in mastication of foodIncisors for cutting

Canines of tearing

Premolars and Molars for cruching,grinding and masticating

2. They are important for proper speech anterior teeth.

3. They improve appearance of mouth and face

4. They protect the periodontium


41/42

s o

Loss of any tooth will:

Affect the mechanism of mastication

Destroy to some extent their

organization Spoil occlusion


42/42

Documents

1 - Dental Anatomy 101 Dant.pdf