Alqusour Academy Lab Oral Histo

ALQUSOUR ACADEMYThis is a longitudinal section of a rabbit embryo after folding showing:

This is a longitudinal section of a rabbit embryo showing the primitive mouth with:

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Developing brain

Upper Jaw

Intrinsic muscles of Tongue

HeartLiver

Upper jaw

Lower jaw

Meckel’s Cartilage

Hard Palate

Nose

Spinal Cord

Vertebral Column

Genioglossus Muscle

Geniohyoid Muscle

Mylohyoid Muscle

ALQUSOUR ACADEMYThis is a coronal section of a rabbit embryo showing the head and the face with:

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Cerebral Ventricles

Eye

Nasal Septum

Fusion line between right and left palatine shelves of secondary palate

Submandibular gland duct

Intrinsic muscles of the tongue

Meckel’s Cartilage

Genioglossus Muscle

Geniohyoid Muscle

Mylohyoid MuscleMedial & Lateral alveolar plates

Inferior alveolar nerve

Early Teeth Formation

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21

1

Primary Epithelial

Band

Condensed Ectomesenchymal

tissue

Enamel Organ at Late Cap Stage

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2

Primary Epithelial

Band

Vestibular Lamina

Dental Lamina

EEE

SR

IEE

Dental Papilla

Dental Follicle

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Primary Epithelial Band

Vestibular Lamina

Vestibular Lamina

Dental Lamina

Dental Lamina

Condensed Ectomesenchymal

tissue

Enamel Organ at Bud stage

Enamel Organ at Late Bell Stage

(Longitudinal section)

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1

2

1

EEE SR

Mature IEE

(Pre-ameloblasts)

EnamelDentine SI

Cusp tips

Cervical loop

Ameloblasts depositing

enamel

Odontoblasts depositing

dentine Dental papilla Dental follicle

Dental pulp

3

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EEESR

Immature Enamel

Dentine SI

Ameloblasts depositing

enamel at the secretory stage

Odontoblasts depositing

dentine

Dental pulp

Predentine

10X zoom in

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20X zoom in

Tomes' processes

Dentinal tubules

DEJ

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SR

SIDental papilla

Pre-ameloblasts

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2 Immature enamel

Mature enamel

Dentine

Dental pulp

SRSIAmeloblasts

Odontoblasts Dental pulp

Predentine Dentinal tubules

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Dentine Primary enamel cuticle

Ameloblasts

SI

SR

Reduced enamel epithelium

3

Mature Enamel

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Enamel Organ at Late Bell Stage

(Cross section)

1 2

1

EEE

SR

Cusp tips

SI

Immature enamel

Mature enamelDentine

Dental pulp

Ameloblasts

Mature IEE

(pre-ameloblasts)

Dental Papilla

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Mature enamel 2

Dentine Dental pulp

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Ground longitudinal section of enamel and dentine

Hunter-Shreger bands

Enamel stria running obliquely across enamel prisms

Enamel

Dentine

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Ground cross section of enamel and dentine

Enamel Dentine

Dental pulp

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Dentinal tubules being straight under

cusp tips

Dentinal tubules being sigmoidal

For Any Question:

Dr. Tahani Abu Al-Teen

0796190551