张结 1 1

Stamotology --- Oral medicine Tianjin medical university general hospital ZhangJie ( 张结 ) Tel:13820787738 E-mail:Jane_2410@126.com

Oral anatomy Oral molecular biology Introduction Oral physiology Oral medicine Oral surgery Orthodontics Pedodontics Prosthodontics Stamotology

Frantal hairline Hyoid bone Posterior border of the mandibular ramus

Introduction Stamotology Prothodontics Orthodontics Oral surgery Oral medicine Stamotology of our lecture Dental caries Periodontal disease Oral mucous membrane disease Surgical treatment of the oral cavity diseases The diagnostics, prevention,treatment , of irregularities of the individual teeth, groups of teeth and anomalies of jaws .

Outline of oral medicine 0ral medicine 0ral mucous membrane disease Periodontal disease Dental caries Dental anatomy Tooth 0ral mucosa Periodontium

Dental anatomy ----Tooth
Crown and root
Tooth tissues
Types of teeth
Dentition
Teeth are very important to our body 1

Crown and root Cemental-enamel junction(CEJ)

Difference The anatomic crown The clinic crown The anatomic crown The clinic crown

Tooth Crown and root Tooth tissues Types of teeth Dentition 1 2 4 3 Four tooth tissues 1.Enamel 2.Dentin hard 3.Cementum 4. Pulp soft

1.Enamel Enamel forms the outer surface of the crown

Thickness of enamel Mineralization of enamel Pigmentation Color of teeth

The chemical composition

2.Dentin Dentin forms the largest portion of the tooth The color of the dentin is yellow

Unlike enamel ,dentine is capable of adding to itself. When it does this, the new dentin is called secondary dentin . Secondary dentin.

3.Cementum

Medium to attachment of the tooth to the alveolar bone

Cellular: 1/3apical root Acellular: anatomic root

4.Pulp Dentin-reparative system Blood Vessels Nourishing Activate and support Lymph tissue Nerve tissue Filters the fluids within the tooth Fight bacteria Sensory,/responds only to pain Special cells

Pulp chamber Pulp canal Root canal Pulp cavity

Tooth Crown and root Tooth tissues Types of teeth Dentition

Incisors cut incisal edge

Canines Holding Grasping

Premolars Chew Grind Holding Grasping

Molars Chew Grind

Anterior teeth Posterior teeth

Tooth Crown and root Tooth tissues Types of teeth Dentition

How to identify a deciduous tooth?

How to identify a permanent tooth?

1 Dental anatomy ---- Periodontium Oral mucosa Tooth Gingival unit Attachment unit 1.Free gingiva 1.Cementum. 2.Attached gingiva 2.Alveolar bone 3.Alveolar mucosa 3.Periodontal ligament

1.Gingiva unit---free gingiva Free Gingiva is the gum tissue extends from the gingival margin to the base of the gingival sulcus.

Gingival sulcus is the space between the gingiva and the tooth. A healthy gingival sulcus will rarely exceed 3mm in depth.

1.Gingiva unit---attached gingiva Attached gingiva extends from the base of this sulcus to the mucogingival junction .

1.Gingiva unit---alveolar mucosa Alveolar mucosa is found apical to the mucogingival junction and is continuous with the rest of the mucous membrane of the cheeks lips and the floor of the mouth .

Gingival papilla is the free gingiva located in the triangular interdental space. The apex in the anterior teeth is rather sharp but is more blunt in the posterior teeth.

2.Attachment unit— Cementum Alveolar bone Periodontal ligament Alveolar process is the type of bone that lines the sockets in which the roots of the teeth are held. It is thin and compact with many small openings through which blood vessels ,lymph vessals, and nerves pass. Alveolus is the socket in which the tooth rests.

2.Attachment unit— Cementum Alveolar bone Periodontal ligament Periodontal ligament are the fibers attached to the alveolar bone and to the cementum

Horizontal group
Oblique group
Apical group
Alveolar crest group
Interradicular group
Most of the Periodontal ligament are arranged in the following groups: Hammock of tooth tissue bundles Tie push

Horizontal group
Oblique group
Apical group
Alveolar crest group
Interradicular group

1 Dental anatomy ---- tooth Periodontium Oral mucosa
The tongue is covered with stratified squamous epithelium, scattered throughout this epithelium on the upper most surface are four types of papillae:
1.Vallate papillae
2.Fungiform papillae
3.Filiform papillae
4.Foliate papillae

1. Vallate papillae
A V-shaped row of circular raised papillae.
About 8---12 elevations in the V
Location—2/3 of the way back on the tongue
They have many tiny taste buds
( also named Circumvallate papillae ) cells Nerve endings

2.Fungiform papillae
Location -- anterior two thirds of the tongue
Tiny ,round, redder, raised spot
They have taste buds.

3. Filiform papillae
Location- the remainder of the anterior two thirds of the tongue is covered with tiny pointed projections known as filiform papillae.
No taste function

4.Foliate papillae
Location-- the posterior lateral border of the tongue
Roughness and folds tissue.
Fewer taste buds

The main topics
CEJ---?
Four tooth tissues
Four types of teeth
How to identify a deciduous or permanent
tooth?
Gingival papillae and gingival sulcus
Alveolar process and alveolus
Five groups of periodontal ligament
Four types tongue papillae

Take a rest
Thank you

张结 1 1

by Deep Deep on May 09, 2009

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张结 1 1 — Presentation Transcript