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ORAL TISSUES IN HEALTH AND DISEASE

DNT 243 ORAL PATHOLOGY. ORAL TISSUES IN HEALTH AND DISEASE. Dr.Shahzadi Tayyaba Hashmi. ORAL TISSUES. TYPES OF INTRA ORAL TISSUES. INTRA ORAL HARD TISSUES Teeth Jaws (maxilla and mandible) Hard Palate INTRA ORAL SOFT TISSUES Gingiva Tongue Lips Buccal mucosa Labial mucosa

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ORAL TISSUES IN HEALTH AND DISEASE

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  1. DNT 243 ORAL PATHOLOGY ORAL TISSUES IN HEALTH AND DISEASE Dr.Shahzadi Tayyaba Hashmi

  2. ORAL TISSUES

  3. TYPES OF INTRA ORAL TISSUES INTRA ORAL HARD TISSUES • Teeth • Jaws (maxilla and mandible) • Hard Palate INTRA ORAL SOFT TISSUES • Gingiva • Tongue • Lips • Buccal mucosa • Labial mucosa • Soft palate • Floor of the mouth • pharynx

  4. EXTRA ORAL TISSUES • TM joint • Lymph nodes • Head and face • Eyes • Ears • Bones and cartilage • Nose • Blood vessels • Face

  5. HEALTHY ORAL TISSUES Healthy Gingiva (normal pink colour) Healthy Oral Cavity

  6. UNHEALTHY ORAL TISSUES Macroglossia (Large tongue) Unhealthy /inflamed gingiva (Swollen ,bleeding on probing , red in colour) Supernumerary Teeth (Additional teeth)

  7. TEETH • Most important Intra oral hard tissue • Consists of • Enamel • Dentine • Pulp

  8. Requirements for Development of an Ideal Dentition • Formation of a full complement of teeth. • Normal structural development of the dental tissues • Eruption of each group of teeth at the appropriate time into an adequate space • Normal development of jaw size and relationship • Eruption of teeth into correct relationship to occlude with their opposite numbers

  9. Disorders of Development of Teeth • Abnormalities in Number: • Anodontia or hypodontia • Additional teeth (hyperdontia) • Defects of Structure: • Enamel defects • Dentine defects • Abnormalities in Size: • Microdontia • Macrodontia

  10. Disorders of Development of Teeth 4. Disorders of Eruption: • Delayed eruption • Premature eruption • Impacted teeth 5. Abnormalities in Shape: • Dilaceration • Taurodontism • Dens Invaginatus • Dens Evaginatus • Talon cusp • Supernumerary roots • Gemination • Fusion • Concrescence • Enamel pearls

  11. Abnormalities In Number Of Teeth • Anodontia (missing teeth): a) Total Anodontia: Congenital absence of all teeth is known as total anodontia. Total failure of development of a complete dentition is rare. b)Partial Anodontia: Congenital absence of one or more teeth is known as partial anodontia Examples: • Third molars • Second premolars • Maxillary lateral incisors

  12. Abnormalities In Number of Teeth • HYPERDONTIA (ADDITIONAL TEETH): • Additional teeth are relatively common • They are usually of conical shape (supernumerary teeth) but, less frequently resemble teeth of normal series (supplemental teeth) • These are the results of excessive growth of dental lamina of unknown cause • supernumerary teeth may prevent the eruption of the a permanent teeth & also may cause displacement or malposition of teeth EXAMPLES: • Mesiodens (between maxillary central incisors) • Paramolars (maxillary fourth molars) • Distomolar • Neonatal teeth

  13. EXAMPLES OF SUPERNUMERARY TEETH Mesiodens Mesiodens

  14. ESSENTIAL REFERENCES • Oral Pathology for the Dental Hygienist (5th Edition) By Olga A. C. Ibsen, RDH, MS and Joan • Contemporary for oral and maxillofacial pathology by J.Phillip Sapp, Lewis Roy Eversole

  15. THANK YOU

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