مراجعة عملى هيستولوجى سنه ثانيه جديد معدل

Bud stage

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Cap stage

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Stellate reticulum

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Outer dental epithelium

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Inner dental epithelium

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Dental papilla

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Dental sac

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Enamel cord

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Early bell stage

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Early Bell stage

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Dental papilla

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Lateral dental lamina

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Cervical loop

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Stellate reticulium

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Dental papilla

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Primordium of permanent tooth

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Dental sac

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Advanced Bell Stage

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Stratum intermedium

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Ameloblasts

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Predentin

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Outer dental epithelium

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Stratum intermedium

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Dental papilla

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Advanced Bell Stage

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Stratum intermedium

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Enamel matrix

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Dentin

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Predentin

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Odontoblasts

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Enamel matrix

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Ameloblast

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Stratum intermedium

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Enamel matrix

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Dentin

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Outer enamel epithelium

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Reduced enamel epithelium

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Dentine

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Developing pulp

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Enamel matrix

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Predentin

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Odontoblast

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Epithelial Diaphragm

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Ameloblasts

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Cervical loop

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Epithelial diaphragm

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PredentinDentin

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Predentin

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PredentinGlobular mineralization of dentin

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Odontoblasts

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Enamel spindle

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Enamel lamella

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Hunter-Schreger Bands

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Incremental lines of Retzius

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DEJ

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Dentinal tubules

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Incremental Lines of Retzius

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Enamel tuft

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Pulp in situ

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Dentin

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Cementum

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Periodontal ligamet

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Enamel lamella

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Enamel spindle

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Dentinal tubule

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Neonatal line

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Interglobular dentin space

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Dentino-enamel junction

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Incremental lines of von Ebner

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Secondary dentin

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Sclerotic dentin

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Dead tract

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Reparative dentin

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Secondary dentin

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Tomes granular layer

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Dentinal tubules

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Cellular cementum

Acellular cementum

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Acellular cementum

Tomes granular layer

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Acellular cementum

Cellular cementum

Cellular Cementum

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Lacuna of cementocyte

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Lacunae &canaliculi of cementocytes

Incremental lines of Salter

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L.S ground section showing:ATLASA- cementum overlaps enamel 60%B- cementum meets enamel 30%C- no junction(gap junction) 10%

62.psd

Attached cementicle

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Hypercementosis

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DPre DOdontoblastsCell Free ZoneCell Rich ZoneCore

Diffuse pulp calcification

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True denticle

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Pulp stone

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Osteoblast

Osteoclasts

Howships lacuna

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The remnants of the epithelial root sheath of Hertwig migrate toward the dental sac and become the epithelial rests of Malassez found in the periodontal ligament of the fully developed tooth. A-Epithelial rests of MalassezB-cementum

Epithelial rests of Malassez

Oblique fibersMalassez restAlveolar bone Dentin

Alveolar crest group

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Horizontal fibers

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Gingival ligament

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Alveolar crest (group) fibers

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Alveolar process

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Bundle bone

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Acellular cementum

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Interstitial tissue space

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Transeptal Fibers

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Oblique fibers

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Interradicular fibers

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Horizontal fibers

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Apical fibers

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Oblique fibers

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Horizontal fibers

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Alveolar process

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66.bin

Bundle bone

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Bundle bone

67.bin

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Bundle bone

68.bin

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Interstitial tissue space

Bundle bone

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Compact bone

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Haversian system

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Haversian canalHaversian system

Haversian canal

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Volkmans canal

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Interstitial lamellae

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Bone lamellaLacuna of osteocyte

Haversian canal

Osteocyte

Compact bone

69.bin

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Osteocyte osteoblast

Spongy bone

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70.bin

Fiboblasts

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Stratified Squamous Keratinized Epithelium

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Keratin layer

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Stratified squamous non keratinized epithelium

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Gingiva

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Vermilion borderLining mucosaSkin side

Skin side of the lip

Sebaceous gland

Hair follicleStratum cornium

Vermilion border

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Vermilion border

Masticatory mucosa of the hard palate

Hard palate

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Mucous acini

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Lining mucosa of lip

Labial glandOrbicularis oris muscle

Lining mucosa of cheek

Buccal gland

Soft palate

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Lining mucosa

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Labial mucosaOral vestibule

Free gingivaGingival sulcusSulcular epitheliumEnamel spaceAttachment epithelium

Free gingivaGingival sulcus & enamel spaceFree gingival groove

Junctional epithelium

Cementum

Junctioal epithelium on cementum

Junctional epithelium on cementum

Attached epithelium

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Attached epithelium

Epithelial diaphragm

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Interdental septum

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Filiform papillae

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Filliform papilla

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Filiform papilla

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Fungiform papilla

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Fungiform papilla

Taste buds

Filiform papillaFungiform papilla

Fungiform papilla

Tate bud

Fungiform papilla

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Circumvallate papilla

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Foliate papilla

Taste bud

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Taste pore

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Taste bud

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Taste buds

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von Ebner S. G.

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Serous acini Serous salivary glandIntercalated duct

Intercalated ducts

Zymogen granulesSerous salivary gland

Mixed salivary gland

Mucous acinus

Serous acinus

Mucous acinusSerous acinusZymogen granulesMixed salivary gland

Mucous acinus

Serous acinusMixed salivary gland


Serous demilune of vonEbner

Serous salivary gland

Buccal salivary gland (mixed)

Mucous aciniSerous acini

Striated muscle fibersSerous acinusMucous acinus

Mixed salivary gland predominantly serous (submandibular gland)

Intercalated ductSerous acinusMucous cellsMixed salivary gland

Mucous terminal portionIntercalated duct

Serous acinusStriated ductMixed salivary gland

Intercalated ductStriated ductsMixed salivary gland (major sublingual )Serous acinusMixed terminal portion

Serous demilunesSerous acinus

Mixed acinusMixed salivary gland

Intercalated ductAdipose tissueSerous gland

Striated duct

Mucous acinusIntercalated ductMixed salivary gland ( Submandibular)

Large inter-lobar excretory duct

C.T. stromaMixed salivary gland

Excretory ductGoblet cell

Striated ductSerous salivary gland

Striated ductsMucous aciniSerous acini


Striated ducts

Interalated ductMixed salivary gland

Mucous acinus

Intercalated duct

Striated ductMixed salivary gland(submandibular gland)

Striated ductMixed salivary gland

Parotid glandAdipose tissue

Excretory ductParotid gland

Excretory duct

Intercalated duct

Serous acinus

Demilunes of von Ebner

Serous acinusMucous acinusMixed salivary gland

Striated duct

Mucous acinus

Demilune of von Ebner

Demilune of von EbnerMixed salivary gland

Excretory ductSerous acinus

Demilune of von EbnerMixed salivary gland

Tooth germ of deciduous predeccessor

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Tooth germ of permanent successor

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Erupting permanent successorShedding of predecessor

Decalcified H & E stained section showing shedding of deciduous tooth

During the intraosseous phase, the rate averages 1-10 um per day, it increases to about 75 um per day once the tooth escapes from its bony cell .

Tooth eruptionKey: 1 = milk teeth; 2 = developing adult teeth; 3 = jaw bone; 4 = gum

Tooth eruption

Osteoclasts erode jaw bone to make way for erupting adult tooth

Eruption

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Reduced enamel epithelium

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Erupting deciduoustooth

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Meckels cartilage

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Nasal septum

Palatine process

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Psuedo-stratified ciliated epithelium

Lining of maxillary sinus

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Lining of maxillary sinus

Goblet cell

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Articular eminence

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Articular disc

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Condyler head

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Articular disc(meniscus)Condylar headGlenoid fossa

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مراجعة عملى هيستولوجى سنه ثانيه جديد معدل

Health & Medicine

Transcript of مراجعة عملى هيستولوجى سنه ثانيه جديد معدل