ORAL HISTOLOGY- SALIVARY GLANDS ( SUBMANDIUBULAR)

MIXED SALIVARY GLAND- SUBMANDIBULAR

MIXED SALIVARY GLAND- SUBMANDIBULAR 

MSUSD- Mucous Secretory Unit with Serous Demilune 

SSU- Serous Secretory Unit

D- Demilune

ICD- Intercalated Duct

ED- Excretory Duct

BV- Blood Vessel          

Submandibular Gland by Mandana Donoghue is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Based on a work at www.oralpath.in.

FIBRO-OSSEOUS LESION IN THE WALL OF AN ODONTOGENIC TUMOR

Whole Slide Scan of AOT and FCOD Lesion

AOT - FCOD by Mandana Donoghue is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Based on a work at www.orapath.in.

Case Presentation of Concomitant and Contiguous Adenomatoid Odontogenic Tumor and Focal Cemento-Ossifying Dysplasia

Gita Rezvani1, Mandana Donoghue2,*, Peter A. Reichart3 and Neda Pazuhi4


"The complex embryonic derivation of the maxillofacial structures causes a widerange of pathologies, particularly in the tooth-bearing areas of the jaws. The development of simultaneous lesions of differing cellular origin, has so far, not been reported in the English literature.".

Abstract: A 24 year-old male was presented for the diagnosis of an asymptomatic bony expansion in relation to the right maxillary canine and first premolar. The unilocular radiolucent lesion with central foci of calcification had caused divergence of canine and first premolar roots without any resorption. This case report details a diagnosis of two distinct disease processes of different cellular origin namely, focal cemento-ossifying dysplasia and adenomatoid odontogenic tumor in a previously unreported concomitant and contiguous relationship. The diagnosis was determined by a combination of clinical, radiographic, histopathological and surgical evidence. This case highlights two points, first the need to examine all mixed radiolucent-radiopaque lesions with advanced imaging techniques to assess the number and extent of the lesions prior to treatment planning. Second a likely role of periodontal ligament as the tissue source for odontogenic epithelial cells and mesenchymal stem cells required for the development of odontogenic tumors and cemento-osseous dysplasias.

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OPATH PICTURES - ODONTOGENIC TUMORS

ADENOMATOID ODONTOGENIC TUMOR (AOT):

Cells arranged into nests, rosettes, and duct like spaces, with scant connective tissue. 
Adenomatoid odontogenic tumor by Mandana Donoghue is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Based on a work at www.oralpath.in.

ORAL HISTOLOGY- SALIVARY GLANDS

SEROUS SALIVARY GLAND

Serous Salivary Gland 

( PAROTID)

SSU - Serous Secretory Unit(Serous Acinus)

ID- Intercalated Duct

SD- Striated Duct

BV- Blood Vessel

CTS- Connective Tissue Septa


Serous Salivary Gland by Mandana Donoghue is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Based on a work at www.oralpath.in.

ORAL HISTOLOGY- PERIODONTAL LIGAMENT

CEMENTICLES:

FREE CEMENTICLE

CC- Cellular Cementum

PDL- Periodontal Ligament

CEM- Cementicle







Cementicles by Mandana Donoghue is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Based on a work at www.oralpath.in.

ORAL HISTOLOGY - PERIODONTAL LIGAMENT

PERIODONTAL LIGAMENT- OBLIQUE FIBERS 

PERIODONTAL LIGAMENT 

D- Dentin

CC- Cellular Cementum

PDL- Periodontal Ligament ( oblique group of  fibers shown here)

AB- Alveolar Bone 

ABC- Alveolar Bone Canal 

BV- Blood Vessel

PERIODONTAL LIGAMENT by MANDANA DONOGHUE is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Based on a work at www.oralpath.in.

ORAL HISTOLOGY - CEMENTUM

Sharpey's Fibers in Cementum:

Sharpey's Fibers

C- Cementum

D- Dentin

S- Sharpey's Fibers

T- Tomes Granular Layer



Sharpey's fibers by Vijayalaxmi Kotrashetti is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Based on a work at www.oralpath.in.

ORAL HISTOLOGY- CEMENTUM

HYALINE ZONE OF HOPEWELL SMITH

Contributed by Dr. Vijayalaxmi Kotrashetti


ZHS by Vijayalaxmi Kotrashetti is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Based on a work at www.oralpath.in.

ORAL HISTOLOGY - CEMENTUM

HYPERTROPHIC / HYPERPLASTIC CEMENTUM

Hypertrophic/ Hyperplastic  Cementum

D- Dentin

CC- Cellular Cementum

HC- Hypertrophic/hyperplastic cementum


Hyperplastic cementum by Mandana Donoghue is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Based on a work at www.oralpath.in.

ORAL HISTOLOGY- CEMENTUM

ACELLULAR AND CELLULAR CEMENTUM:

Types of cementum

C- Cementum

EFAC- Extrinsic fiber acellular cementum(primary cementum) 

IFCC- Intrinsic fiber cellular 
cementum(secondary cementum)

CC- Cementocytes

TGL- Tomes' Granular Layer


Types of Cementum by Mandana Donoghue is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Based on a work at www.oralpath.in.

ORAL HISTOLOGY- CEMENTUM

CEMENTOENAMEL JUNCTION

Cementoenamel Junction (CEJ) -Overlap Junction, Gap Junction, Butt joint (left to right), Enamel ( E), cementum (C), Dentin (D)

Cementoenamel Junction by Mandana Donoghue is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Based on a work at www.oralpath.

ORAL HISTOLOGY- PULP

DENTICLE OR PULP STONE

 TRUE FREE PULP STONE

PS- Pulp stone  surrounded by odontoblasts 

BV- Blood vessel


NF- Nerve Fibers

FREE FALSE PULP STONES &
DIFFUSE CALCIFICATION

PS- Pulp Stone (Free)

DC- Diffuse calcification








Pulp Stones by Mandana Donoghue is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Based on a work at www.oralpath.in.

Just Added - Mucocutaneous Verruca Vulgaris: A Rare Presentation in an Immunocompetent Patient

Abstract: 

Cutaneous warts encountered in Verruca vulgaris are easily recognized by the medical professionals. The mucosal counterparts in the oral cavity are, however, rarely seen in the medical practice. Overall the verrucopapillary lesions of the oral cavity are rare, and difficulties may, therefore, be encountered
in diagnosing this lesion. Thorough clinical and histopathological examinations along with a relevant habit history are often essential in reaching a diagnosis. Early identification and eradication of the lesion is crucial in the prevention of further transmission, tissue destruction and rarely
malignant transformation


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ORAL HISTOLOGY- PULP

CENTRAL PULP

CENTRAL PULP

BV- Blood vessel

NF- Nerve Fibers 






central pulp by Mandana Donoghue is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Based on a work at www.oralpath.in.

ORAL HISTOLOGY- DENTIN

PREDENTIN

PREDENTIN

D- Dentin

PD- Predentin

OB- Odontoblasts

CFZ- Cell Free Zone

CRZ- Cell Rich Zone

PC- Pulp Center


Contributed by Dr. Vimi Mutalik


Predentin by Vimi Mutalik is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Based on a work at www.oralpath.in.

ORAL HISTOLOGY-DENTIN

TOMES' GRANULAR LAYER

TOMES' GRANULAR LAYER

D- Dentin

C- Cementum

TGL- Tomes' Granular layer

CC- Cementocyte



Tomes' Granular Layer by Mandana Donoghue is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Based on a work at www.oralpath.in.

ORAL HISTOLOGY - DENTIN

DEAD TRACTS AND TERTIARY DENTIN

Dead Tracts & Tertiary Dentin

E- Enamel

D- Dentin

PD- Primary Dentin

SD- Secondary Dentin

DT- Dead Tracts

TD - Tertiary  Dentin (Sclerotic Dentin)

PS- Pulp Space


Dead Tracts & Tertiary Dentin by Mandana Donoghue is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Based on a work at www.oralpath.in.

ORAL HISTOLOGY DIAGRAMS - DENTIN

TERMINAL BRANCHING OF TUBULES

TERMINAL BRANCHING OF DENTINAL TUBULES

DEJ - Dentinoenamel Junction

DT- Dentinal Tubules

TB- Terminal Branching of Dentinal Tubules





Terminal Branching of Dentinal Tubules by Mandana Donoghue is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Based on a work at www.oralpath.in.

ORAL HISTOLOGY DIAGRAMS- DENTIN

INCREMENTAL LINES OF DENTIN:

E- Enamel

D- Dentin

PD- primary Dentin

SD- Secondary Dentin

LVE- Lines of Von Ebner

CLO- Contour Lines of Owen

PC- Pulp Chamber

                                                            

Incremental Lines of Dentin by Vimi Mutalik is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Based on a work at www.oralpathology.in.

ORAL HISTOLOGY DIAGRAMS-DENTIN

INTERGLOBULAR DENTIN

E- Enamel

D- Dentin

IGD- Interglobular Dentin






Interglobular Dentin by Mandana Donoghue is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Based on a work at www.oralpath.in.

ORAL HISTOLOGY DIAGRAMS- DENTIN

PERITUBULAR AND INTERTUBULAR DENTIN

ITD- Intertubular Dentin

PTD- Peritubular Dentin

OP- Odontoblastic Process

Peritubular and intertubular dentin by Mandana Donoghue is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Based on a work at www.oralpath.in.

ORAL HISTOLOGY DIAGRAMS - DENTIN

DENTINAL TUBULES, PRIMARY AND SECONDARY DENTIN:

E- Enamel

D- Dentin

DT- Dentinal Tubules

PD- Primary Dentin

SD- Secondary Dentin

PC- Pulp Chamber

Dentinal tubules, prim & sec dentin by Mandana Donoghue   @ https://flic.kr/p/2jzxJnU

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. 

ORAL HISTOLOGY DIAGRAMS - ENAMEL

ENAMEL TUFTS, LAMELLAE AND SPINDLES:

E- Enamel

SP- Enamel Spindles 

ET- Enamel Tufts

EL- Enamel Lamellae

D- Dentin

DEJ- Dentinoenamel Junction

Enamel Lamellae, tufts & spindles by Mandana Donoghue is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Based on a work at www.oralpath.in.

ORAL HISTOLOGY DIAGRAMS- ENAMEL

HUNTER AND SCHREGER BANDS:

Hunter & Schreger Bands : The optical phenomenon seen as alternating light and dark bands, from DEJ towards the surface. Traversing 2/3rd of the enamel thickness.   ( Reflected light)     

Hunter & Schreger Bands of Enamel by Mandana Donoghue is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Based on a work at www.oralpath.in.

                    

ORAL HISTOLOGY DIAGRAMS-ENAMEL

GNARLED ENAMEL

E- Enamel

GE- Gnarled Enamel (Undulating enamel rods across planes)

DEJ- Dentinoenamel Junction

D- Dentin

Gnarled Enamel Diagram by Mandana Donoghue is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Based on a work at http://mandanadonoghue.blogspot.in/.

ORAL HISTOLOGY DIAGRAMS- Enamel- Incremental Lines of Retzius and Neonatal line

E- Enamel
D- Dentin
SR- Striae of Retzius ( Concentric rings produced by incremental enamel deposition)
NL- Neonatal line A prominent SR seen in deciduous teeth and at times cusps of permanent first molar
DEJ- Dentinoenamel Junction


Striae of Retzius by Mandana Donoghue is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.