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40 Cards in this Set
- Front
- Back
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more common on Mx molars
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concrescence - form of fusion where teeth joined by cementum
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possibly due to trauma
problems with RCT/X |
dilaceration
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invagination of enamel organ before calicification
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dens invaginatus aka dens-in-dente
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more often in Mx LI, can be bilateral
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dens-in-dente
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tooth like structure in central fossa
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dens evaginatus
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more often in Mn biscuspids
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dens evaginatus
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sequela of PA infection
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dens invaginatus
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prophylactic restoration of pit
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dens invaginatus
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blocked shape teeth with large pulp = bull like teeth
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taurodontism
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one or multiple teeth
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taurodontism
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taurodontism cause
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isolated (phenotypic expression of gene pool) or w/ syndromes esp Klinefelters syndrome
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anodontia invariably associated with...
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systemic problem, most common = hereditary ectodermal dsyplasia
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90% in Mx
most common is?? |
supernumerary teeth.
mesiodens |
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supernumerary teeth associated with what conditions
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gardner's syndrome
cleidocranial dsyplasia |
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how is amelogensis imperfecta caused by?
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inheritary - autosomal dominant/recessive, sex-linked.
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how many different types of amelogenesis imperfecta
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12-15 types
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ameologenesis imperfecta clinical produces
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hypoplasia (low amounts)
hypocalcification (enough but undercalcified hypomaturation |
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3 differences between hereditary and environmental defects for disturbances in enamel
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hereditary - affects all teeth, both dentitions, family Hx
environmental - some teeth, one dentition, no family Hx |
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clinical signs of environmental defects
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hypoplasia and hypocalcification
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environmental defects of enamel include (7)
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rickets
exanthematous diseases congenital syphilis Turner's tooth fluorosis tetracycline idiopathic |
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often viral diseases affecting epithelium
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exanthematous diseases
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presentation of teeth in congenital syphilis
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hutchinson's incisors
mulberry molars |
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local infection or trauma damages tooth below; localized defect of succedanous tooth
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turner's tooth
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mottle enamel
generalized? amt of element need to see affect? discoloration is due to? |
fluorosis.
yes. >1ppm due to other elements, ex Fe |
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dominantly inherited genetic defect therefore will affect both dentitions and all teeth
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dentinogenesis imperfecta independent or with osteogenesis imperfecta
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grayish to yellowish-brown, translucent, fractures bc no scallop. exposed dentin prone to attrition
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dentinogenesis imperfecta
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XR = obliteration of pulp chambers and canals +/- attrition +/- root fractures
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dentinogenesis imperfecta
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crowns to prevent attrition
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dentinogenesis imperfecta
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cause of dentinal dsyplasia
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autosomal dominant
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dentinal dsyplasia characterized by...
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pulpal obliteration with abnormal dentin, defective root formation, tendency for PA patholgoy
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dentinal dsyplasia clinically affects what? and clinically teeth appears what?
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affects all teeth and both dentitions.
teeth clinically appear normal |
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XR of dentinal dsyplasia
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obliteration of pulp
short underdeveloped roots PA radiolucencies |
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ghost teeth aka?
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regional odontodsyplasia
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ghost teeth cause
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unknown
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ghost teeth affect what? and where. commonly affects?
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thin enamel and dentin; affect several teeth in one region of jaw
mostly affect permanent teeth teeth, increase in Mx, unerupted |
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embedded teeth aka..
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pseudoanodontia
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cause of embedded teeth
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teeth lack eruptive forces.
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for psydoanodontia, if generalized, suspect what?
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systemic cause, ex. hypothrydoidism
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impacted teeth unerupted becaues of??
common in?? |
mechanical (tooth) obstruction
Mn 3rd molars and Mx canine |
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tooth roots fused to bone
often in what tooth? Distinctive percussion? |
ankylosed teeth
primar teeth with underlying succedenous permanant tooth missing Yes. |
