Postgrad. 2013
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Transcript of Postgrad. 2013
الرحيم الرحمن الله الرحيم بسم الرحمن الله بسم
introductionintroduction
SLIDE
I. Ground II. Decalcified
CementumEnamel Dentin NOT presentDentin present
Tooth dev.(except late bell &root
formation.)
Embryology.
Mucous memb.
Salivary.
TMJ.
sinus
Tooth Around tooth
CementumPulpDentinPDL , DGJ , ALV. Bone & shedding
Dentin bone Dentin MAY be present
bone
Ground section (enamel & dentin)
Ground section (enamel & dentin)
Ground section (cementum & dentin)
Ground section(reflected light)
Decalcified section (pulp)
Decalcified section (tooth, PDL & bone)
Decalcified section (e.g.tooth dev.)
principlesprinciples
SLIDE
I. Ground II. Decalcified
CementumEnamel Dentin NOT presentDentin present
Tooth dev.(except late bell &root
formation.)
Embryology.
Mucous memb.
Salivary.
TMJ.
sinus
Tooth Around tooth
CementumPulpDentinPDL , DGJ , ALV. Bone & shedding
Dentin bone Dentin MAY be present
bone
Incremental lines
I. Ground Section
Enamel tuft.
Enamel Spindle
Enamel Lamella
Hunter Schreger
Bands
D.E.J.
Reflected Light
L.S T.S T.S L.S T.S L.S T.S
A) Enamel Gnarled ,neonatal cross striation & surface
L.S T.S
Enamel histology
Ground section Decalcified section
the organic substance is burnt and the inorganic substance will remain
inorganic substance dissolve and the organic contents remain.
The dentino-enamel junction
Incremental lines of RetziusIncremental lines of Retzius
Incremental lines of Retzius
Enamel lamella
Enamel tuft
E. tuft E. spindle
Enamel spindleEnamel spindle
Enamel spindleEnamel spindle
E. Spindle
HUNTER SCHREGER BANDSDark=(Diazone) light=(parazone)
Incremental lines
I. Ground Section
Enamel tuft.
Enamel Spindle
Enamel Lamella
Hunter Schreger
Bands
D.E.J.
Reflected Light
L.S T.S T.S L.S T.S L.S T.S
A) Enamel Gnarled ,neonatal cross striation & surface
L.S T.S
Gnarled Enamel
Neonatal lineNeonatal line
GnarleGnarled d
enameenamell D.E.JD.E.J
Neonatal lineNeonatal line
33--Neonatal Neonatal lineline
PRENATAL ENAMEL
POSTNATAL ENAMEL
POSTNATAL ENAMEL
PRENATAL ENAMEL
Surface structureSurface structure1.1. Perikymata:Perikymata:
ASG
E. rod end
perikymata
perikymata
SLIDE
I. Ground II. Decalcified
CementumEnamel Dentin NOT presentDentin present
Tooth dev.(except late bell &root
formation.)
Embryology.
Mucous memb.
Salivary.
TMJ.
sinus
Tooth Around tooth
CementumPulpDentinPDL , DGJ , ALV. Bone & shedding
Dentin bone Dentin MAY be present
bone
Of the crown (mostly)
B) Dentin
Of the root
1. Tome's granular layer1. Interglobular
D. spaces
T.S. Dentinal Tubules G.S)
L.S. Dentinal Tubules+ 2ry curvature
2ry dentin (line of demarkation)
1. Dead tract
2- sclerotic dentin3- reparative dentin
Incremental lines
Dentinal tubules
L.S IN Dentinal tubules
L.S. in dentinal tubules (2ry curvature)
L.S in L.S in D.T.(2ry D.T.(2ry
curvaturecurvature))
decalcified sectiondecalcified sectionSe
c.
curv
atur
es
Terminal branches
T.S. IN D.T.
B= INTERTUBULAR DENTIN
C= DENTINAL LUMEN
A=PERITUBULAR DENTIN
Intertubular D
Peritubular D
T.S in D.T
intertubular dentin
peritubular dentinOdontoblastic process
D.T. (PeriOdontoblastic space)
T.S. IN D.T.
intertubular DENTINE
Incremental lines of dentineIncremental lines of dentine 1-Incremental lines 1-Incremental lines
of von Ebnerof von Ebner
2- contour line of 2- contour line of OwenOwen
22--Contour line of Contour line of OwenOwen . .
Incremental lines of von Ebner
N.B. the horizontal lines are LS in D.T.pulp
Contour line of OwenContour line of Owen . .
Incremental lines of dentin (Owen)
Dead tractsDead tracts
ScleroticSclerotic dentindentin
ReperativeReperative debntindebntin
Dead tractDead tract
Sclerotic Sclerotic dentindentin
Primaryphysiological
dentin
Regular secondarydentin
Reparative dentin
Dead tracts
Reparative Reparative dentindentin
OdontoblastsOdontoblasts
Primaryphysiological
dentin
Regular Secondarydentin
Secondary dentinSecondary dentin
Line of demarcation bet 1ry and 2ry Dentin.
Primaryphysiological
dentin
Secondarydentin
Secondary DentineSecondary Dentine
Odontoblasts
Predentine
Globule of calcification
Of the crown (mostly)
B) Dentin
Of the root
1. Tome's granular layer1. Interglobular
D. spaces
T.S. Dentinal Tubules G.S)
L.S. Dentinal Tubules
2ry dentin (line of demarkation)
1. Dead tract
2- sclerotic dentin3- reparative dentin
Incremental lines
Tomes’ granular layer
INTERGLOBULAR D. SPACES
INTERGLOBULAR D. SPACES
INTERGLOBULAR D. SPACE
Interglobular D. spaces
interglobular dentine spaces
Interglobular dentinInterglobular dentin
SLIDE
I. Ground II. Decalcified
CementumEnamel Dentin NOT presentDentin present
Tooth dev.(except late bell &root
formation.)
Embryology.
Mucous memb.
Salivary.
TMJ.
sinus
Tooth Around tooth
CementumPulpDentinPDL , DGJ , ALV. Bone & shedding
Dentin bone Dentin MAY be present
bone
Acellular
C) Cementum
Cellular
Sharpey's fiber spaces
Incremental lines of salter
T.S
L.S
Cementocytes spaces (Lacunae)
Hypercementosis
Cellular cementum
Acellular cementum
SHRPEY’S FIBER SPACE
Sharpey’s fiber space
Acellular cementum
Tomes’ granular layer
INC LINES OF SALTERIn ACELLULAR C.
Incremental Lines Of Incremental Lines Of SalterSalter
In acellular C
In cellular C
Lacuna of cementocyte
Lacuna of cementocyte
L.S. in DT
Acellular cementum Cellular cementum
Acellular cementum
Acellular cementum
ODONTOBLAST
predentin
ACELLULAR CEMENTUM
ODONTOBLAST
Cellular CementumCellular CementumLacunae of
cementocytes
PDL sideDentin
side
Cementocytes
Incremental lines of Salter
Lacuna of cementocyte
Age Changes Of Age Changes Of CementumCementum
D D
Localised Hypercementosi
s (excementosis)
1 -Hypercementosis.
Generalized Hypercementosis
SLIDE
I. Ground II. Decalcified
CementumEnamel Dentin NOT presentDentin present
Tooth dev.(except late bell &root
formation.)
Embryology.
Mucous memb.
Salivary.
TMJ.
sinus
Tooth Around tooth
CementumPulpDentinPDL , DGJ , ALV. Bone & shedding
Dentin bone Dentin MAY be present
bone
HAVERSIAN & HAVERSIAN & OSTEOCYTEOSTEOCYTE
SPACESSPACES(ground section)(ground section)
Compact bone
LACUNAE AND LACUNAE AND CANALICULICANALICULI
GROUND SECTION
GROUND SECTION
Haversian canal
Lacuna of osteocyte
Haversian system
Volkmann’s canal
Volkmann`s canal
SLIDE
I. Ground II. Decalcified
CementumEnamel Dentin NOT presentDentin present
Tooth dev.(except late bell &root
formation.)
Embryology.
Mucous memb.
Salivary.
TMJ.
sinus
Tooth Around tooth
CementumPulpDentinPDL , DGJ , ALV. Bone & shedding
Dentin bone Dentin MAY be present
bone
Odontoblastic layer
Cell free zone
Pulp core (Blood vessel)
[c] Pulp
Pulp in situ.
Denticle (Pulp
stone)
Cell rich zone
Detached Pulp (Pointer on same items) ????
lymph vessel???
Pulp in situ
Free denticle (false)BLOOD VESSEL (PULP CORE
PREDENTIN
CELL FREE Z.CELL RICH Z. ODONTOBLAST
Blood vessel
fibroblast
Lymph vesselLymph vessel
Free denticle dentin
True pulp stone
False pulp stone
False pulp stone (free)
FreeFree
AttachedAttached
Attached denticle (false)Attached denticle (false)
FreeFree
AttachedAttached
SLIDE
I. Ground II. Decalcified
CementumEnamel Dentin NOT presentDentin present
Tooth dev.(except late bell &root
formation.)
Embryology.
Mucous memb.
Salivary.
TMJ.
sinus
Tooth Around tooth
CementumPulpDentinPDL , DGJ , ALV. Bone & shedding
Dentin bone Dentin MAY be present
bone
Fibers (groups)
A) Dentin present (continued)
Gingival group
(2) Around tooth
[a] PDL
cementicle
Alveodental group Transseptal (interdental) group
Alveolar crest group (fibers)
Horizontal group (fibers)
Oblique group (fibers)
Interradicular group (fibers)
apical group (fibers)
Interstitial tissue
Malassez Sharpey’s
Dentin (1) & C.T. or Dentin (1) & C.T. or triangletriangle
GINGIVAL GROUP
GINGIVAL GROUP
22 Dentin Dentin (separated) & C.T. (separated) & C.T.
&/or BONE&/or BONE
Dentin (CONNECTED & Dentin (CONNECTED & SURROUND BONE)SURROUND BONE)
Interradicular fibers
N.BN.B..
OBLIQUE GROUP
((BONE SURROUNDS DENTINBONE SURROUNDS DENTIN ) )
Apical fibers
طرقةطرقة((BONE & DENTINBONE & DENTIN ) )
Alv. crest fibers
Horizontal fibers
Oblique fibers
TRANSSEPTAL GROUP
HORIZONTAL GROUP
Fibers (groups)
A) Dentin present (continued)
Gingival group
(2) Around tooth
[a] PDL
cementicle
Alveodental group Transseptal (interdental) group
Alveolar crest group (fibers)
Horizontal group (fibers)
Oblique group (fibers)
Interradicular group (fibers)
apical group (fibers)
Interstitial tissue
Malassez Sharpey’s
INTERSTITIAL TISSUE
Fibers (groups)
A) Dentin present (continued)
Gingival group
(2) Around tooth
[a] PDL
cementicle
Alveodental group Transseptal (interdental) group
Alveolar crest group (fibers)
Horizontal group (fibers)
Oblique group (fibers)
Interradicular group (fibers)
apical group (fibers)
Interstitial tissue
Malassez Sharpey’s
Epithelial Rests
dentine
bone
Epith. Rests of Malassez
free cementicle
Fibers (groups)
A) Dentin present (continued)
Gingival group
(2) Around tooth
[a] PDL
cementicle
Alveodental group Transseptal (interdental) group
Alveolar crest group (fibers)
Horizontal group (fibers)
Oblique group (fibers)
Interradicular group (fibers)
apical group (fibers)
Interstitial tissue
Malassez Sharpey’s
Sharpey’s Fibers
PDL FIBER )Sharpey’s fiber(
osteocyte
SLIDE
I. Ground II. Decalcified
CementumEnamel Dentin NOT presentDentin present
Tooth dev.(except late bell &root
formation.)
Embryology.
Mucous memb.
Salivary.
TMJ.
sinus
Tooth Around tooth
CementumPulpDentinPDL , DGJ , ALV. Bone & shedding
Dentin bone Dentin MAY be present
bone
Attachment epithelium
sulcular epithelium
Attachment epithelium
sulcular epithelium
Attachment epithelium
sulcular epithelium
Dento-gingival junctionDento-gingival junction
Gingiva
Gingival LigamentGingival LigamentA= circular fibers
B= dentogingival fibers
C= dentoperiosteal fibers
D= alveologingival fibers
dentogingival
dentoperiostealAlveolar crest!!
SLIDE
I. Ground II. Decalcified
CementumEnamel Dentin NOT presentDentin present
Tooth dev.(except late bell &root
formation.)
Embryology.
Mucous memb.
Salivary.
TMJ.
sinus
Tooth Around tooth
CementumPulpDentinPDL , DGJ , ALV. Bone & shedding
Dentin bone Dentin MAY be present
bone
Odontoclasts
D
P
PDL
odontoclasts
Howships lacuna
shedding
odontoclasts
Howships lacuna
A
Arrow: Howships lacuna
A: odontoclast
location: shedding
1: arrow 2: (A) 3: location
SLIDE
I. Ground II. Decalcified
CementumEnamel Dentin NOT presentDentin present
Tooth dev.(except late bell &root
formation.)
Embryology.
Mucous memb.
Salivary.
TMJ.
sinus
Tooth Around tooth
CementumPulpDentinPDL , DGJ , ALV. Bone & shedding
Dentin bone Dentin MAY be present
bone
Alv bone proper
Zucker Kandle & Hirschfeld canal
Alv bone proper
11 – – Alveolar Bone ProperAlveolar Bone Proper
Cribriform plate
Zuckerkandl & Hirschfeild canals
☻Perforated with multiple foramina (so, called cribriform plate)
No dentine =No Zucker kandle & hirschfeld canal
Dr Rania MossadDr Rania Mossad
BundleBundle boneboneZucker Kandle & Hirschfeld canal
Bundle bone
A:Bundle bone / B: alveolar bone proper
A
B
Bundle boneBundle bone
Resting linesResting lines
bundle bone of Alv. bone proper
SLIDE
I. Ground II. Decalcified
CementumEnamel Dentin NOT presentDentin present
Tooth dev.(except late bell &root
formation.)
Embryology.
Mucous memb.
Salivary.
TMJ.
sinus
Tooth Around tooth
CementumPulpDentinPDL , DGJ , ALV. Bone & shedding
Dentin bone Dentin MAY be present
bone
SLIDE
I. Ground II. Decalcified
CementumEnamel Dentin NOT presentDentin present
Tooth dev.(except late bell &root
formation.)
Embryology.
Mucous memb.
Salivary.
TMJ.
sinus
Tooth Around tooth
CementumPulpDentinPDL , DGJ , ALV. Bone & shedding
Dentin bone Dentin MAY be present
bone
(Pointer(Pointeron an item)on an item)
Dentin MAY be presentDentin MAY be present
No pointerNo pointer(Pointer on an area)(Pointer on an area)
BoneBone
Compact
Spongy
IN COMPACT
Haversian canal
Osteocyte
IN COMP. OR SPONG.
Resting Line
Reversal Line
IN SPONGY
Bone trabecula
Marrow cavity
OsteocyteVolkmann’s canal
cells:(osteoblast, clast& cyte&fibroblast)
Compact bone
(Cancellous, tubercular)(Cancellous, tubercular)
Dr Rania MossadDr Rania Mossad
Spongy boneSpongy bone
Spongy bone
Compact bone
Spongy bone
(Pointer(Pointeron an item)on an item)
Dentin MAY be presentDentin MAY be present
No pointerNo pointer(Pointer on an area)(Pointer on an area)
BoneBone
Compact
Spongy
IN COMPACT
Haversian canal
Osteocyte
IN COMP. OR SPONG.
Resting Line
Reversal Line
IN SPONGY
Bone trabecula
Marrow cavity
OsteocyteVolkmann’s canal
HAVERSIAN & HAVERSIAN & OSTEOCYTEOSTEOCYTE
SPACESSPACES
osteocyte
Haversian canal
Haversian canal
osteocyte
Haversian canal
osteocyte
Haversian canal
osteocyte
Volkmann’s canal
Volkmann’s canal
Do not forgetDo not forget::
Dentine may be presentDentine may be present
Haversian canal
Haversian canal
Lacuna of osteocyte
Haversian system
Volkmann’s canal
Volkmann`s canal
((trabeculae & trabeculae & marrow cavitiesmarrow cavities))
osteocyte in Bone trabecula
Marrow cavity
Bone trabecula
Marrow cavity
Marrow Marrow spacesspaces
osteocyteosteocyte
osteoblasosteoblastt
Resting line Resting line
Reversal lineReversal line
Reversal line
Resting line
Reversal lines
Resting lines
Reversal lines
INCREMENTAL LINESINCREMENTAL LINES
2-REVERSAL LINE1-RESTING LINES
Resting lines Resting lines Reversal lines Reversal lines
Dr Rania MossadDr Rania Mossad
(Pointer(Pointeron an item)on an item)
Dentin MAY be presentDentin MAY be present
No pointerNo pointer(Pointer on an area)(Pointer on an area)
BoneBone
Compact
Spongy
IN COMPACT
Haversian canal
Osteocyte
IN COMP. OR SPONG.
Resting Line
Reversal Line
IN SPONGY
Bone trabecula
Marrow cavity
OsteocyteVolkmann’s canal
cells:(osteoblast, clast& cyte&fibroblast)
Osteoclasts
2.2. OsteoblastsOsteoblasts
Dr Rania MossadDr Rania Mossad
4.4. OsteoclastsOsteoclasts
Dr Rania MossadDr Rania Mossad
*They are surrounded by bone
matrix, whether mineralized
or not.
fibroblast
Osteoclast
Osteoblast
Howships lacuna osteoclast
PDL FIBER )Sharpey’s fiber(
osteocyte
SLIDE
I. Ground II. Decalcified
CementumEnamel Dentin NOT presentDentin present
Tooth dev.(except late bell &root
formation.)
Embryology.
Mucous memb.
Salivary.
TMJ.
sinus
Tooth Around tooth
CementumPulpDentinPDL , DGJ , ALV. Bone & shedding
Dentin bone Dentin MAY be present
bone
Embryology
Meckel’s cartilage
Palatal shelves
Fused with N. septum
Not Fused with N. septum
Developing mandible
Meckel’s cartilage
Developing mandible
tongue
Line of fusion between palatal
shelvespalatal shelfs
Meckel’s cartilageDeveloping mandible
tongue
Palatal shelf
Meckel’s cartilage
Lingual NerveInferior Dental Nerve
Mechel’s cartilage
LB
SLIDE
I. Ground II. Decalcified
CementumEnamel Dentin NOT presentDentin present
Tooth dev.(except late bell &root
formation.)
Embryology.
Mucous memb.
Salivary.
TMJ.
sinus
Tooth Around tooth
CementumPulpDentinPDL , DGJ , ALV. Bone & shedding
Dentin bone Dentin MAY be present
bone
A: condylar headB: articular eminence
C: glenoid fossaD:Articular disk
E: upper compartment
F: lower compartment
G: lateral pterygoid
TMJArticular disc
Mandibular condyle
Articular eminence
Articular disc
Mandibular condyle
TMJTMJ
SLIDE
I. Ground II. Decalcified
CementumEnamel Dentin NOT presentDentin present
Tooth dev.(except late bell &root
formation.)
Embryology.
Mucous memb.
Salivary.
TMJ.
sinus
Tooth Around tooth
CementumPulpDentinPDL , DGJ , ALV. Bone & shedding
Dentin bone Dentin MAY be present
bone
ADentin NOT present(1) Tooth development
Dental lamina
Bud stage
Cap stage
Early bell stage
Late bell stage
Root formation
* Dental organ
* Dental lamina
* Inner
* Outer
* Stellate
* D. papilla
* D. sac
* Dental lamina
* Cervical loop
* Stratum
* Inner
* Outer
* Stellate
* D. papilla
* D. sac
* D.lamina
* Ameloblast
* Epith. diaphragm
* D. papilla
* Od. blast
* Predentin
* Dentin
* E.space!!* E. matrix
* Epith. diaphragm
* Cervical loop
Tongue
Palate
Dental lamina
Dental lamina
MAIN D. LAMINA
LATERAL D. LAMINA
2- BUD-STAGE.
ECTOMESENCHYMAL CLUMPING (condensation)
D. ORGAN(BUD)
(BUD STAGE)
(CAP STAGE)
Enamel cord
Enamel knot
N.B.(E.cord may be in early bell stage N.B.(E.cord may be in early bell stage also)also)
(cap stage)
Cell free zone
Stellate reticulum
Outer dental epithelium
Inner dental epithelium
Dental papilla
Dental sac
Early bell stageEarly bell stage
A-Deciduous tooth germ
Cervical Loop
Inner dental epithelium
Outer dental epithelium
Lateral dental lamina & Lateral dental lamina & successional dental laminasuccessional dental lamina
N.B.(E.cord may be in early bell stage N.B.(E.cord may be in early bell stage also)also)
Enamel cord
Lateral dental lamina
Enamel niche
SUCCESSIONAL LAMINA
Dental sac
Cervical loop
Cervical loop
Cervical loop
Cervical loop
Cervical loop
EARLY BELL STAGE
1- STELLATE RETICULUM
2- OUTER D. EPITH.
3- INNER D. EPITH.
4- D. SAC
5- D. PAPILLA
6- CERVICAL LOOP
STRATUM INTERMEDIUM
STRATUM INTERMEDIUM
1- STELLATE RETICULUM
2- OUTER D. EPITH.
3- INNER D. EPITH.
4- STRATUM INTERMEDIUM
5- ODONTOBLAST
Advanced Bell Stage
Advanced Bell Stage
Advanced Bell StageAdvanced Bell Stage
Lateral dental lamina
Successional lamina
Main dental lamina
Vestibular lamina
Dental lamina
dentin
Ameloblasts
Stratum intermedium
ADentin NOT present(1) Tooth development
Dental lamina
Bud stage
Cap stage
Early bell stage
Late bell stage
Root formation
* Dental organ
* Dental lamina
* Inner
* Outer
* Stellate
* D. papilla
* D. sac
* Dental lamina
* Cervical loop
* Stratum
* Inner
* Outer
* Stellate
* D. papilla
* D. sac
* D.lamina
* Ameloblast
* Epith. diaphragm
* D. papilla
* Od. blast
* Predentin
* Dentin
* E. space
* E.matrix
* Epith. diaphragm
* Cervical loop
1- D. PAPILLA
2- ODONTOBLASTS
3- PREDENTIN.4- DENTIN
5- E. MATRIX
6- AMELOBLAST
**(E.SPACE MUST BE AFTER DENTIN)
E. Space is number . . . . ?
E. Space is number
4.5 !
7-stratum intermed
E. spaceE. space
ADVANCED BELL SATGE ADVANCED BELL SATGE Histological structure of the tooth germHistological structure of the tooth germ
ENAMEL
DENTIN
PREDENTIN
OUTER DENTAL EPITHELIUM
CAPILLARY LOOP
SR
AB
SI
Odontoblast
ADentin NOT present(1) Tooth development
Dental lamina
Bud stage
Cap stage
Early bell stage
Late bell stage
Root formation
* Dental organ
* Dental lamina
* Inner
* Outer
* Stellate
* D. papilla
* D. sac
* Dental lamina
* Cervical loop
* Stratum
* Inner
* Outer
* Stellate
* D. papilla
* D. sac
* D.lamina
* Ameloblast
* Epith. diaphragm
* D. papilla
* Od. blast
* Predentin
* Dentin
* E. matrix
* E.space
* Epith. diaphragm
* Cervical loop
Epithelial Diaphragm
E = Epithelial diaphragm
EPITHELIAL EPITHELIAL DIAPHRAGM DIAPHRAGM
Histological structureHistological structure
OB
PD
D
DP
DS
ODE
SR
SI
AB
E.M
dentin
E. diaphragm
EPITHELIAL EPITHELIAL DIAPHRAGM DIAPHRAGM
Histological structureHistological structure
OB
PD
D
DP
DS
ODE
SR
SI
AB
E.M
Epithelial Diaphragm
Epithelial diaphragm
SLIDE
I. Ground II. Decalcified
CementumEnamel Dentin NOT presentDentin present
Tooth dev.(except late bell &root
formation.)
Embryology.
Mucous memb.
Salivary.
TMJ.
sinus
Tooth Around tooth
CementumPulpDentinPDL , DGJ , ALV. Bone & shedding
Dentin bone Dentin MAY be present
bone
Striated Excretory
Dentin NOT present Dentin NOT present (cont.)(cont.)
③SalivarySalivary
No pointer
1. Pure Serous
Pointer
2. Pure mucous
3- mixed
4- mix pred serous
5-Mixed Predominately Mucous
1. Acinus
2. Demilune of Von Ebner
3. Ducts
Mixed salivary G. Pure serous S.G.
Pure mucous S.G.
05/01/2305/01/23 288288
Pure mucous gland
05/01/2305/01/23 291291
Serous gland
Pure serous gland
05/01/2305/01/23 293293
Mucous gland
05/01/2305/01/23 294294
Mixed salivary glandFibrous septum
05/01/2305/01/23 296296
05/01/2305/01/23 297297
Serous cap over mucous tubule
serous
Mucous
== mixed s. gland
Mucous terminal portion
== Pure mucous
Serous acinus
== mixed predominantly serous s. gland
Mucous salivary gland
== mixed s. gland
== mixed s. gland
Mixed predominantly Mixed predominantly serousserous
Mixed pred. mucous(note the demilunes )
Mixed pred. mucous(note the demilunes )
Mixed pred. mucous(note the demilunes )
Mixed predominantly Mixed predominantly serousserous
N.B: FAT CELL MAY BE N.B: FAT CELL MAY BE PRESENT IN SALIVARY GLANDSPRESENT IN SALIVARY GLANDS
Striated Excretory
Dentin NOT present Dentin NOT present (cont.)(cont.)
③SalivarySalivary
No pointer
1. Pure Serous
Pointer
2. Pure mucous
3- mixed
4- mix pred serous
5-Mixed Predominately Mucous
1. Acinus
2. Demi Lune of Von Ebner
3. Ducts
Demilune of von Ebner
Serous cap over mucous blind end
Striated duct
Exc duct
Striated duct
Striated duct
Excretory duct
Exc ducts
Exc duct
Striated duct
Striated duct(B)
Exc duct
intercalated duct
Mixed predominantly serous eg: Mixed predominantly serous eg: submandibularsubmandibular
1- tissue2- example
11 - -tissuetissue2- lining cells2- lining cells
3-arrow3-arrow
Excretory duct—pseudostratified columnar epith with goblet cells
Goblet cell
A: mucous terminal portion in mixed acinus
A
1- A
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Intercalated duct
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Myoepithelial cells
SLIDE
I. Ground II. Decalcified
CementumEnamel Dentin NOT presentDentin present
Tooth dev.(except late bell &root
formation.)
Embryology.
Mucous memb.
Salivary.
TMJ.
Sinus (resp. mucosa)
Tooth Around tooth
CementumPulpDentinPDL , DGJ , ALV. Bone & shedding
Dentin bone Dentin MAY be present
bone
Dentin NOT present Dentin NOT present (cont.)(cont.)
I -I - Covering Mucosa Covering Mucosa Mucous MembraneMucous Membrane
Skin side of the lip
Lining mucosa
Hard Palate Gingiva orthokeratinized parakeratinizedRespiratory
mucosa
Resp. mucosa (pseudostratified ciliated columnar epithelium with goblet cells..e.g.
max. sinus)
Goblet cellcilia
Goblet cell
Nasal sideNasal side Respiratory epithelium
Dentin NOT present Dentin NOT present (cont.)(cont.)
I -I - Covering Mucosa Covering Mucosa Mucous MembraneMucous Membrane
Skin side of the lip
Lining mucosa
Hard Palate Gingiva orthokeratinized parakeratinizedRespiratory
mucosa
Skin side of the lip
Hair follicle
Sebaceous gland
Sweat gland
Skin side of the lip
Hair follidle
The LipThe Lip
Skin SideSkin Side
Vermilion zoneVermilion zone
Mucous Mucous MembraneMembrane
sideside
Sebaceous glands
salivary glands
epidermis( stratum lucidum)
eleidinSeat & sebaseous
glands
thick nonkeratinized st. sq. epitheliumdense collagen f.
minor salivary glands
Thin epith, thin keratin layer,high C.T. papillae, many b.v.
(occasional Fordyce spots)
Vermilion border 1
Vermilion border 2Vermilion border 2
Hair follicleHair follicle
VermiliVermilion on border border 33
Hard palate (glandular zone)
Mucous glands (palatine glands)
Keratin layer
Adipose tissue
Adipose tissue
Hard palate (glandular zone)
Mucous glands (palatine glands)
Adipose tissue
Hard palate (fatty and glandular zones)
Gingiva
Gingiva
GingivaGingiva
Parakeratin (containing nuclei)
Gingiva
orthokeratinized stratified squamous epithelium
Parakeratin
Parakeratinized stratified squamous epithelium
Lining mucosa
Lining mucosa ( non k epith)
orthoorthokeratinized keratinized paraparakeratinizedkeratinized
nonkeratinocyte
Prickle cell layer
A: basal cell layer B: prickle cell layer
C.T. papillaC.T. papillaRete pegRete peg
Lamina propria Lamina propria (reticular layer)(reticular layer)
Lining mucosa ( e.g. floor of the mouth)
1- tissue2- example
Dentin NOT present Dentin NOT present (cont.)(cont.)
ITongue PapillaeTongue Papillae
Filiform Circumvallatefungiform Foliate
Tongue papillae
1 -Filliform pap. 2 -Fungiform pap.
4 -Folliate pap.3 -Circumvallate pap.
Filiform papillae
Filiform papillae
Gingiva (if no pointer + no dentine)(if no pointer+ dentine present=ging.&D.G.J
Fungiform papilla
Fungiform papillae
Taste bud
11 - -structurestructure2- location2- location
11 - -structure: fungiformstructure: fungiform2- location: dorsal surface of ant. 2/3 2- location: dorsal surface of ant. 2/3 of tongueof tongue
Fungiform papilla
secondary papilla
Fungiform papilla
Fungiform papilla
filiform
fungiform
foliate
Secondary papilla
Taste bud in foliate
Circumvallate papilla
Circumvallate papilla ( t. bud)
von Ebner S. G.
Taste bud (in circumvallate)
Von Ebner S.gland
foliateCircumvallate
von Ebner S. G.
furrow
von Ebner S. G.
11 - -arrow (taste bud)arrow (taste bud)2- location (eg: fungiform 2- location (eg: fungiform
papilla)papilla)
Taste bud
Taste pore
Keratenized and non-keratenized Keratenized and non-keratenized mucosamucosa
Keratenized mucosaNon-keratenized mucosa
Orthokeratin
Parakeratin
Types of KeratinizationTypes of Keratinization orthoorthokeratinized or keratinized or paraparakeratinizedkeratinized
Hard Palate
Lining mucosa
The LipThe Lip
Skin SideSkin Side
Vermilion zoneVermilion zone
Mucous Mucous MembraneMembrane
sideside
Sebaceous glands
salivary glands
epidermisHair follicles,
Sweat & sebaseous glands
thick nonkeratinized st. sq. epitheliumdense collagen f.
minor salivary glands
Thin epith, thin keratin layer,high C.T. papillae, many b.v.
(occasional Fordyce spots)
LipLipVermilion border
Mucous side
Skin side
Soft palate
Soft palateSoft palate Oral side