oral pathology

1. Pits & fissures caries in early stage, brown-
discoloration in the pits or in the fissures
Probe
Mirror
Radiograph

2. Late stage of caries with large caries cavity in upper 6
c/ occlusally
D/ occlusally and extented in proximal surface
Why? Because it is large cavity
so more washing by saliva so
retention of food will be less

3. Smooth
Proximal
Dental plaque
1-Caries in anterior tooth in smooth surface
( gingival third ), cavity with uniform out line
2- Caries in anterior teeth in proximal surface,
bluish discoloration around the cavity

4. Patient having multiple caries lesion in
gingival third , incisal, and occlusal surfaces.
Due to gingival recession exposing
the root surfaces and they have also
reduce salivary flow

5. Decalcified section in dentine in early stage
showing beading in dentinal tubules
Transverse clefts
When caries spread along the
lateral (transverse) branching in
dentinal tubules.

6. Patient presented with bad
restoration resulted as
bluish discoloration around
the restoration due to
recurrence of caries
Inadequate extension leading to retention of food
Poor adaptation of filling
All caries is not removed

7. Decalcified section in pulp tissue
showing dilated B.Vs &
extravasated RBCs
Hyperemia of the pulp

8. Decalcifies section in pulp tissue showing
pathological cavity rich of debris (contain pus )
Pulp abscess

9. 1-
2-
1- Patient having red mass protruding
in the caries cavity in lower 6
2- decalcified section showing tooth with
large cavity of pulp tissue into pulp cavity
, this pulp tissue contain granulation
tissue covered by thin layer of epithelium
Diagnosis : Pulp polyp

10. Swelling of sort tissue related to upper 4
Decalcified section showing cavity debris
Surrounded by dense bundles of collages
fibers.
Diagnosis : Periapical abscess

11. Radiolucency related to apex of
lower 6

12. Periapical radiolucency in lateral tooth,
and the patient have proximal caries

13. Periapical granuloma with
proliferated epithelium
Cholesterol clefts

14. Patient have protruded whitish lesion (sequestrum)
Decalcified section showing
bone marrow infiltrated by
acute inflammatory cells
Acute Osteomyelitis

15. Patient have multiple sinus
tracts in chin area

16. Decalcified section showing bone marrow
rich of chronic inflammatory cells
Chronic Osteomyelitis

17. Radiopaque area surrounding
the apex of lower 6

18. Dense masses of bone trabeculae contain osteocytes and rim of osteoblasts
Chronic focal sclerosing osteomyelitis

19. Patient have swelling in the
part of the mandibleposterior

20. Occlusal film showing deposition of bone into layers of buccal aresa
result as enlargement of mandible showing periosteal ( outer cortical
plate ) duplication or onion skin appearance
Garre’s osteomyelitis ( condensing periotitis),
(Chronic osteomyelitis with proliferative periostitis)

22. Periapical lesion associated
with extracted molar teeth
Cyst cavity lined by non-
keratinized S.S.E and under
line C.T
Unilocular radiolucency
well defined with
radiopaque margin in
association with periapical
part of non vital toothRadicular Cyst

23. A/ well defined unilocular radiolucent
lesion in association with vital teeth
C/ Large multilocular radiolucent lesion in
association with root of posterior teeth
A/ Odotogenic Keratocyst , Aneuresmal bone cyst , Ameloblastoma
C/ periapical cemental dysplasia

24. 1- Diagnosis : Thyoglossal cyst
2- Describe the clinical picture: Swelling at the midline of the neck
3- Describe the histological picture : Cyst cavity in the posterior part lined by
S.S.E & C.T and thyroid follicles in the upper part of slide

25. 1
2
3
* Diagnosis : Nevoid basal cell carcinoma ( Gorlin Syndrome )
* Describe : 1- Multiple basal cell carcinoma
2- well defined radiolucency
3- The histology of odontogenic keratocyst

26. Extracted canine in association with cystic lesion, the cyst attached to the tooth at CEJ
Unilocular well defined periapical lesion in association with unerupted tooth
Cyst cavity lined by non-keratinized epithelium
Dentigenous cyst

27. Cyst associated with erupted upper maxillary
Histology of eruption cyst ( cyst cavity lined by non-keratinized epithelium & C.T

28. 1- Extracted tooth associated with cystic lesion
2- Odontogenic Keratocyst
3- Radiolucent lesion in the posterior part of mandible ( associated with vital
tooth ) , it may be : * Central intraosseuos tumor , * Metastatic tumor,
*Odontogenic tumor , *Odontogenic keratocyst.

29. Gingival lesion showing nodular mass
of the mandibular facial gingiva
Cyst cavity lined by epithelium
contain : stellate reticulum
( ameloblast like cells ), Ghost cells,
calcification area .
- C.T rich of inflammatory cells
Well defined
radiolucent lesion in
associated with
unerupted tooth
D.D : Gingival fibromas,
Gingival cyst, periapical
giant cell granulomas
Diagnosis : Gorlin cyst