All the slides of oral histology practicle
Transcript of All the slides of oral histology practicle
practical
ORAL HISTOLOGY
DEVELOPMENT OF THE TOOTH
ENAMEL
DENTINE
PULP
CEMENTUM
P.D.L
Alveolar bone
Oral Mucosa Practical class
OF ORAL MUCOSA ALL SLIDES
Oral mucosa
Foliate papillae
•Form ridges on posterior lateral surface of tongue•Functional and noticeable papillae in the neonate
that are reduced in size as one ages
Serous glands
Dorsal
ducts
Taste buds
The superficial cells are dead but retain the nucleus in parakeratinized epithelium but the nuclei are lost in
orthokeratinized epithelium.The rete pegs are long and slender in keratinized
epithelium
Orthokeratinized epithelium Parakeratinized epithelium
Para keratinized epithelium
Lip
Minor SalivaryGlands
Mucosa
Hair Follicles
b) Vermillion zone: is the red border of the skin
NOTE: most of the skin is a keratinized SSE
a) Skin
Muco-cutaneous junction (wet/dry)
Inner side of lip.C: labial gland
A: Epitheliu
mB: Lamina
Propria
Buccal mucosaA: Buccinator
MuscleBuccal
Salivary gland
Circumvallate PapillaFoliate P.
Fungiform P.
Filiform P.Body
Root
Lingual papillae, taste buds, lingual glands, lingual tonsils
Lingual tonsilPalatine
tonsilSulcus terminalis
Taste & sensation
Tongue (Specialized mucosa)
Circumvallate papilla
Taste buds
Serous glands(Von Ebner’s)
Dorsal
Serous glands wash substances from taste buds and secrete lipase, which prevents a hydrophobic layer from forming over the taste buds
Stratified sequamous keratinized epithelium
Filiform papilla
Filiform
Fungiform
Taste bud
DorsalFungiform papilla
SEM
Highly vascular lamina propria
Foliate papillae
•Form ridges on posterior lateral surface of tongue•Functional and noticeable papillae in the neonate
that are reduced in size as one ages
Serous glands
Dorsal
ducts
Taste buds
Attached gingiva with Para keratinized epithelium
A:epithelial Ridge B: Lamina Propria C: Surface Of EpitheliumD: Epithelium
Gingiva
A: junctional epithelium.B: cement
Glandular zone of H.Palate
A=Palatine glands
B=Palatine raphe
Hard palate: C: Fatty zoneArrow =traction bands
B: Bone A: Space
D:blood Vessle
Mucous salivary ringPalatine glands superiorlyWeber’s gland at root of
tongue inferiorlyGlossopalatine glands on
the sidesHelps for swallowing
Taste budsA= Supporting cells ;B=Taste pore,
Ripe tomatoes, which are rich in umami components
Lingual tonsilsand Weber’s gland
Heinrich Wilhelm Gottfried von Waldeyer-Hartz
Salivary gland practice 2014/4/6
•Largest gland but makes only ~25% of saliva•Secretes into Stenson’s duct•All serous cells with much adipose tissue•Synthesizes amylase and secretory IgA •Mumps: viral infection (inflammation & pain; facial nerve involved)
Parotid gland Fat cellDuct systemSerous acini
Sublingual glands. A=mucous acini; B=Duct;arrow=Serous demilune
PAS stain
Submandibular glandA=serous acini;MA=Mucous acini;SD=serous demiluneID=intercalatedduct SD
MA
AID
Striated ducts (Submandibular gland)Basal striations
Semi-thin section of serous cells
Lip and labial glands
Minor SalivaryGlands