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19 Cards in this Set
- Front
- Back
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Anodontia
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missing teeth
e.g. missing lateral incisors or perm 2nd premolars (3rd common site of missing teeth) |
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supernumerary teeth
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90% occur in maxillary
mesiodens (in between maxillary centrals) common max: 3rd molars common mand: 2nd premolars |
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Gemination
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aka Twinning
1 root, 1 pulp chamber splitting of tooth germ |
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fused teeth
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2 roots, 2 pulp chambers
caused by pressures during dental development and tooth eruption |
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Hutchinson's teeth
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Mulberry Molars
due to congentital syphillis also have notched incisors |
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Carabelli's Trait
Carebelli's cusp: |
acessory cusps or tubercles on teeth
5th cusp on ML cusp of max 1st molar |
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Enamel Pearls
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in furcation of max. molars
may lead to periodontal problems. seen in radiographs |
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Taurodontia
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Long pulp chambers.
aka Bull Teeth |
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Talon Cusps
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enamel projection in cingulum area of anterior permanent teeth. may contain pulp horn. may cause occlussal interference
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Microdontia
Macrodontia |
correct shape, smaller size. seen in lateral and 3rd molars
normal shape, bigger size. seen in incisors and canines |
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dilaceration
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bend at the apical tip (45-90 degrees)
due to crowding during development |
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dens in dente
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tooth within tooth. Due to invagination of enamel within crown of tooth. seen in incisors as deep groove. found on radiograph.
max laterals most commonly affected |
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concrescence
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joining of 2 teeth at the cementum around the root, after eruptoon
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enamel hypoplasia
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enamel growth halted. due to disturbance of ameloblasts during enamel matrix formation
caused by trauma or disease e.g. turner's tooth (deciduous teeth infection) |
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enamel hypocalcification
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disturbance in enamel matrix maturation. low minaral deposits, white spots
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enamel dysplasia
fluorosis |
high fluoride in diet
mild --> white spots severe --> dark brown spots can see mottling or pitting of enamel (severe) |
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dentin dysplasia
dentinogenesis imperfecta |
herditary.
teeth appear blue/gray to yellwish. no pulp or root canals. teeth weak and prone to fracture |
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tetracycline staining
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when taken during tooth formation
either dentition may be affected |
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transposition
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misplaced tooth buds --> teeth develop in wrong place
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