Presentation on theme: "DENTAL ANOMALIES Anomaly- defined as something that is noticeably different or deviates from the norm."— Presentation transcript:
1 DENTAL ANOMALIESAnomaly- 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 factorsExtrinsic factors
4 Intrinsic factorsResult of heredity, metabolic dysfunction, or mutations
5 Extrinsic factorsResult of physical or chemical trauma, biologic agents, nutritional deficiencies, stress, habits or environmental conditions.
6 Hereditary Congenital—condition that occurs at or before birth Familial tendency- if a condition exists due to evidence of an inherited tendencyDevelopmental anomaly- a condition that results during the formation and development of a dental structure.
7 Classification of Dental Anomalies Macrodontia-teeth are too largeMicrodontia- teeth are too smallHyperdontia- extra teethAnodontia- too few teethTotal anodontia- no teeth are present at allPartial anodontia- less than the normal number of teeth are present.
8 Most common missing permanent teeth are: Third molarsMore 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
19 Maxillary supernumerary teeth outnumber mandibular. Shapes of supernumerary teeth:Regular tooth shape- supplementalCone-shaped- conicalVery small in size- tubercle
20 HyperdontiaDistomolars- 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 SHAPEOdontoma-tumorous anomaly of calcified dental tissues
22 Dens in DenteThe outer surface of the tooth crown invaginates or turns itself inward before mineralization—Means, “tooth within a tooth”
51 DENTIN IS GRAY, BROWN OR YELLOW—TOOTH HAS AN UNUSUAL TRANSLUCENT HUE DENTIN IS GRAY, BROWN OR YELLOW—TOOTH HAS AN UNUSUAL TRANSLUCENT HUE.-PULP CHAMBERS AND ROOT CANALS ARE COMPLETELY FILLED IN WITH DENTIN.
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.