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OPT Teeth

1. matrix formation 2. mineralization 3. maturation 3 stages of enamel development
environmental enamel hypoplasia abnormal formation of matrix deposition; forms pits, grooves and missing enamel
environmental enamel opacity damage to enamel during maturation; normal enamel thickness but is discolored and opaque
diffuse opacities ill-defined areas of white enamel
demarcated opacities circumscribed areas of white, create yellow or brown
Turner hypoplasia white/yellow/brown hypo maturation of permanent tooth due to trauma to overlying primary tooth
Turner tooth altered permanent tooth from primary tooth trauma
dilaceration bend of crown or root of tooth
molar incisor hypomineralization idiopathic developmental abnormality of enamel defects in first molars
cheese molars another name for molar incisor hypo mineralization; due to soft and porous enamel
dental fluorosis ingestion of excess fluoride causing enamel defects; opaque white and areas of yellow to brown {mottling}
syphilitic hypoplasia includes Hutchinson incisors and mulberry molars
tooth wear loss of tooth structure, normal physiologic process in aging
attrition caused by tooth to tooth contact while chewing
abrasion secondary to action of external agent
demastication tooth wear from chewing abrasive substance; combination of attrition and abrasion
erosion caused by acidic chemical reaction, internal and external
periomolysis erosion from gastric secretion
abfraction caused by repeated flexure from occlusal stresses
internal resorption caused by cells in dental pulp
inflammatory resorption internal resorption where dentin is replaced by inflammatory granulation tissue
pink tooth of Mummery pink coronal discoloration when inflammatory resorption in coronal pulp chamber
replacement (metaplastic) resorption dentinal wall is resorbed and replaced with bone-like cementum
external resorption arises from cells in PDL
invasive cervical resorption when external resorption begins at cervical and spreads to adjacent teeth and roots
multiple idiopathic root resorption when multiple teeth are affected by invasive cervical resorption
eruption movement of tooth from development to functional position
emergence when first part of the crown is visible
impacted teeth when a tooth ceases to erupt before emergence
ankylosis cessation of eruption after emergence, fusion of tooth and bone; aka {infra occlusion, secondary retention, reimpaction}
hypodontia lack of development of one or more teeth due to problems with dental lamina
anodontia total lack of tooth development; seen in ectodermal dysplasia
oligodontia missing 6 or more teeth
hyperdontia increased number of teeth; extra teeth called {supernumerary}
mesiodens supernumerary teeth in anterior maxilla
distomolar/distodens supernumerary teeth distal to third molars
paramolar supernumerary teeth lingual or buccal to a molar
natal teeth teeth present shortly after birth, usually lower incisors
dental transposition normal teeth in inappropriate locations
microdontia unusually small teeth, upper lateral and 3rd molars are most likely
macrodontia unusually large teeth
gemination/fusion double tooth where the tooth count is normal/off by one; joined by dentin
concrescence two formed teeth joined by cementum
cusp of Carabelli accessory cusp on mesiolingual of maxillary first molars in permanent and primary teeth
protostylid analogous to cusp of Carabelli on lower molars
talon cusp additional cusp on lingual of anterior tooth that projects over 1/2 the distance from CEJ to incisal edge
dens evaginatus cusp-like elevation of enamel on central groove or lingual ridge
shovel-shaped incisors associated with dens evaginates; prominent lateral margins on lingual of incisors
coronal dens invaginatus maxillary predominance, usually in laterals; aka {dens in dente}
dilated odontome invagination that distorts the shape of the developing tooth
radicular dens invaginatus rare; ectopic radicular enamel that forms invagination
taurodontism enlargement of tooth body and pulp chamber
hypercementosis non-neoplastic deposition of excess cementum continuous with normal cementum; seen in Paget disease
globodontia cuspids and molars with enlarged and bulbous crowns; occlusal surface looks like a tied end of a sausage
otodental syndrome combination of globodontia and sensorineural hearing loss
lobodontia autosomal dominant disorder where teeth look like carnivorous fangs
amelogenesis imperfecta (AI) group of 14 hereditary disorders of alteration in enamel development in any stage of enamel development
hypoplastic AI problem during enamel matrix formation but has appropriate mineralization
hypomaturation AI problem during enamel maturation of crystal structure
hypocalcified AI lack of mineralization of enamel matrix; yellow/brown/orange teeth, widespread calculus
generalized pitted AI hypoplastic AI, scattered pits across all surfaces
localized pitted AI horizontal rows of pits or linear depression; can affect only scattered teeth and only the primary teeth
diffuse hypoplastic AI both dentitions little or no enamel that can be {smooth} or {rough}
enamel agenesis total lack of enamel formation; type of diffuse hypoplastic AI
generalized thin hypoplstic AI includes all diffuse hypoplastic types of AI
hypomaturation normally formed matrix but defective maturation of crystal structure; looks like fluorosis
pigmented type of hypomature AI; mottled, agar brown enamel; requires full crown coverage
snow-capped type of hypo mature AI; zone of white opaque enamel on occlusal third
hypomineralization amelogenesis imperfecta groups hypo maturation and hypo calcified variants of AI
autosomal dominant AI with taurodontism joins both variants due to phenotypic variation in families
tricho-dento-osseous syndrome autosomal dominant disorder with AI with taurodontism, kinky hair and bone issues
dentinogenesis imperfecta autosomal dominant disorder of translucent teeth and premature closure of pulp canals
shell teeth normal thickness enamel with thin dentin and large pulps
Brandywine isolate dentinogenesis imperfect with enamel hypoplasia and pulp enlargement
dentin dysplasia, type II autosomal dominant disorder like DI; normal root length, blue/brown primary teeth and large pulp chambers, pulp stones in permanent dentition
dentin dysplasia, type I rootless teeth from autosomal dominant disorder; normal crowns with crescent pulp chambers
regional odontodysplasia idiopathic disorder of teeth with thin enamel and dentin with large radiolucent pulps {ghost teeth}
ghost teeth teeth with thin enamel and dentin and large radiolucent pulps; seen in regional odontodysplasia
Created by: aharnold