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DENTAL ANOMALIES Anomaly- defined as something that is noticeably different or deviates from the norm.

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Presentation on theme: "DENTAL ANOMALIES Anomaly- defined as something that is noticeably different or deviates from the norm."— Presentation transcript:

1 DENTAL ANOMALIES Anomaly- defined as something that is noticeably different or deviates from the norm.

2 Dental anomalies Are deviations of dental tissue origin Dental tissues are enamel, dentin or cementum

3 These anomalies can result from: Intrinsic factors Extrinsic factors

4 Intrinsic factors Result of heredity, metabolic dysfunction, or mutations

5 Extrinsic factors Result of physical or chemical trauma, biologic agents, nutritional deficiencies, stress, habits or environmental conditions.

6 Hereditary Congenitalcondition that occurs at or before birth Familial tendency- if a condition exists due to evidence of an inherited tendency Developmental anomaly- a condition that results during the formation and development of a dental structure.

7 Classification of Dental Anomalies Macrodontia-teeth are too large Microdontia- teeth are too small Hyperdontia- extra teeth Anodontia- too few teeth Total anodontia- no teeth are present at all Partial anodontia- less than the normal number of teeth are present.

8 Most common missing permanent teeth are: Third molars More often the maxillary thirds more than the mandibular thirds.

9 Second most common missing permanent teeth are: Maxillary lateral incisors

10 Third most common missing tooth is: Mandibular second premolar

11 Least likely permanent tooth to be missing is: The canines

12 Hyperdontia Supernumerary teeth

13 Mesiodens- supernumerary teeth in the midline of maxillae.

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19 Maxillary supernumerary teeth outnumber mandibular. Shapes of supernumerary teeth: Regular tooth shape- supplemental Cone-shaped- conical Very small in size- tubercle

20 Hyperdontia Distomolars- are called fourth molars and are located distal to the maxillary third molars.these occur more frequently in the Maxillary then Mandibular arch. Paramolar- a supernumerary tooth situated buccally or lingually to a molar.

21 ANOMALIES IN SHAPE Odontoma-tumorous anomaly of calcified dental tissues

22 Dens in Dente The outer surface of the tooth crown invaginates or turns itself inward before mineralization Means, tooth within a tooth

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47 Discoloration of enamel due to excessive amount of fluoride.

48 Notched incisors-result of prenatal syphilis.

49 Result of congenital syphilispoorly formed cusps.

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51 DENTIN IS GRAY, BROWN OR YELLOWTOOTH HAS AN UNUSUAL TRANSLUCENT HUE.-PULP CHAMBERS AND ROOT CANALS ARE COMPLETELY FILLED IN WITH DENTIN.

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55 Tetracycline staining A condition that occurs when an expectant mother or a young child with tooth crowns are still developing takes tetracycline. The teeth discolor and the color ranges from yellow to brown or grayish blue.


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