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MDA Chapter 17 Oral Pathology. Pathology; – Study of diseases in the oral cavity – Diagnosed by a Dentist or Doctor Final diagnosis (from) – Historical,

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Presentation on theme: "MDA Chapter 17 Oral Pathology. Pathology; – Study of diseases in the oral cavity – Diagnosed by a Dentist or Doctor Final diagnosis (from) – Historical,"— Presentation transcript:

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 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 – 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 – Chipped teeth – Broken teeth – Serious infections(remember how close this is to your brain) PLEASE DO NOT DO THIS 


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