1. MDA Chapter 17
Oral Pathology

2. Pathology; Study of diseases in the oral cavity
Diagnosed by a Dentist or Doctor
Final diagnosis (from)
Historical, clinical, radiographic, lab, surgical, therapeutic, microscopic and differential findings
Dental Assistants should be able to:
Recognize the difference between normal and abnormal conditions

3. Terms What is meant by Malignancy What is meant by Benign?
What is meant by Benign
What is a tumor?

4. Oral Lesions
Lesions
Broad term for abnormal tissues in the oral cavity
Below mucosal surfaces
Ulcer, erosion, abscess
Above mucosal surfaces
Blisters (vesicles), pustule, hematoma, plaque
Even with mucosal surface
Chymosis (bruising)
Raised/flat
Nodules, granuloma

5. Disease of Oral Soft Tissue
Leukoplakia
“white patch”
Anywhere in the mouth
Lichen Planus
Benign, chronic disease
Wickham’s striae
Candidiasis
Yeast-like infection “Candida albicans
Pseudomembranous candidasis (Thrush)
Hyperplastic—white plaque, cannot remove
Atrophi—”erythematous” smooth red patches

6. Aphthous Ulcers Canker sores Common Recurrent—(RAU) Minor RAU
90% of all cases
Major RAU
10% of cases, frequent outbreaks that last longer

7. Cellulitis Inflammation is uncontrolled Associated with oral infection
Can be dangerous
If it travels to eye or brain

8. Conditions of the Tongue
Glossitis
Inflammation or changes to tongue
Geographic tongue
Tongue loses areas of filform papillae

9. Oral Cancer One of the 10 most frequently occurring cancers
Warning signs
Sores that do not heal
Numbness in oral cavity
White or rough lesions on lips or oral cavity
Black or brown pigmented areas
Lesions with flat or raised margins

10. Smokeless Tobacco Periodontal disease and tooth loss
Irritation of oral mucosa
Precancerous leukoplakia
Cancers of the pharynx, larynx and esophagus

11. Developmental Disorders
When cells in the body divide, and a deformity occurs
Congenital
present at birth
Genetic
Abnormalities in chromosomes
Environmental factors (teratogens)
Due to infections, drugs, radiation

12. Jaw Development Macrognathia Micrognathia Torus palatinus
Abnormally large jaw
Micrognathia
Abnormally small jaw
Torus palatinus
Bony over growth

13. Disturbances in Lip, Palate and Tongue Development
Cleft lip
Cleft palate
Cleft uvula

14. Disturbances in Tooth Development and Eruption
Ameloblastoma
Tumor from dental lamina that did not make it to tooth buds
Anodontia
Congenitally missing teeth
Supernumerary
More than the normal 32 teeth
Macrodontia
Abnormal large teeth
Microdontia
Abnormal small teeth
Dens in dente
Tooth within a tooth
Gemination
Tooth bud dividing
Fusion
Joining of dentin and enamel of 2 or more separate teeth

15. Ankylosis ?
Impaction
Abrasion
Attrition
Bruxism

16. Orofacial Piercing Can cause PLEASE DO NOT DO THIS  Chipped teeth
Broken teeth
Serious infections(remember how close this is to your brain)
PLEASE DO NOT DO THIS 