Flashcards
Developmental Abnormalities (path 2)
Cards in this deck (38)
- 1febrile illnessbilateral
symmetric
horiz zones of hypoplasia at chronological time of illness - 2turners hypoplasiadefects in adult dentition due to localized (non-systemic) disruption due to inflammation or trauma of primary dentition
typically affects adult PM
trauma-->opacity
inflamm-->hypoplasia - 3radicular hypoplasiasig root resorption due to radiation tx
also assoc with xersotomia and caries - 4fluorosisexcessive fl during development-->white, chalky hypomineralized areas
retained amelogenin (enamel matrix prot)
incr caries resistance - 5congenital syphillisblindness, deafness, dental hypoplasia (CN8 affected)
hutchinson's incisors and mulberry molars - 6attritionloss of tooth structure due to tooth-tooth contact during occlusion
flattened squared off look - 7abrasionloss of tooth structure due to action of external agent (non masticatory)
ie. toothbrush - 8abfractionfracture of tooth structure due to occlusal stresses causing tooth flexure
deep narrow, v-shaped lesions in cervical areas of lesions
may resemble abrasion/erosion - 9erosionnon-bact chem dissolution (food, drinks, meds, environ, gerd) of tooth structure
includes perimolysis on linguals of max ant teeth - 10internal root resorptionbegins in dental pulp
usually asymptomatic
granulation tissue due to necrotic tissue--> pink tooth of mummery - 11external resorptionbegins in PDL
usually asymptomatic
due to trauma, inflamm, cysts, neoplasms, idiopathic, ortho - 12impactioneruption ceases before emergence
soft tissue or bony - 13ankylosisfusion of tooth with alveolar bone
cessation of eruption after emergence
retained primary "submerged" teeth - 14natal teethpresent at birth or first 30 days of life
mand incisors most freq
prematurely erup deciduous teeth (not supernumerary)
retain if stable, remove if aspirate - 15hypohydrotic ectodermal dysplasiamost common type of ED
x-linked inheritance
defective epidermal structures: hypodontia, hypotrichosis, hypohidrosis
abnormal, conical teeth
faint hair, midface hypoplasia
possible anodontia - 16congentially missing teethrare in primary dentition (mand incisors)
common in perm dentition (3M, 2PM, max LI)
least common: max CI, M1 - 17supernumerary teethmost common: max incisors, max 4M, mand PM
mesiodens
distomolar (4M)
or paramolar (B or L to molar)
seen in gardners and CCD - 18Gardner SyndromeAD
supernumerary teeth
osteomas and jaw densities
intestinal polyps with 100% chance of malig transformation - 19microdontiageneralized: rare (pituitary dwarfism, Down Syn)
localized: common (peg lateral, 3M) - 20macrodontiageneralized: rare (pit gigantism, hemifacial hyperplasia)
localised: rare (mand 3M) - 21relative macrodontia/microdontianormal teeth in small jaw causing crowding
OR
normal teeth in large jaw causing spacing - 22geminationdevelops as one tooth than splits into 2 during devl
tooth count is normal - 23fusion2 teeth develop fused together
tooth count is missing one - 24concrescenceunion by cementum alone
no confluence of dentin
may be due to devl or inflamm
may not be obvious on radio - 25types of accessory cuspscusp of carabelli (ML cusp of max M1)
dens evaginatus
talon cusp - 26dens invaginatus (dens in dente)deep surface invagination lined by enamel
- 27enamel pearlectopic enamel forming nodule
may have dentin and pulp or just enamel
causes PD and inflamm issues - 28cervical enamel extensionextension of ectopic enamel on buccal surface of mand molars
may cause buccal bifurcation cysts - 29taurondontismelongated pulp chamber and shallow furcation
can affect primary and perm
sometimes seen in: AI, Ectodermal Dys, hypophosphatasia, Klinefelter, Down - 30hypercementosisexcess deposition of secondary cementum
more cellular than typical cementum (more like bone)
may cause anklyosis
localized due to inflamm or occlusal trauma
generalized: paget's ds of bone
can follow PDL all the way around - 31dilacerationangulation or bend in a tooth root caused by displacement of tooth germ
- 32supernumerary rootsfound in 3M, mand C, mand PM most commonly
- 33AIhereditary ds with defective enamel formation
14 subtypes including hypoplastic (most common), hypocalcified, hypomaturation
mostly AD, some X-lined - 34DIAD defective foramtion of dentin
may be assoc with OI
oaplescent teeth, soft dentin
radio: cervical constriction, obliteration of pulp
dentin next to enamel is normal, but remaining dentin has disoriented, irregular, and widely spaced tubules - 35type I dentin dysplasiaAD
radicular dentin dysplasia
pulp obliteration with chevron shaped pulp chambers
short and thin roots
PARLs
pulp chamber histo: 'water flowing around boulders' - 36type II dentin dysplasiaAD
coronal dentin dysplasia
normal roots
"thistle tube" pulp chambers and stones in coronal portion - 37regional odontodysplasia"ghost teeth"
localized devl abnormality that involved enamel, dentin, pulp
idiopathic, poss due to alt in vascular supply
primary or perm teeth
affects a segment of the jaw, usually ant
pale, whispy teeth thin enamel and dentin surr large pulp
adjacent tissue filled with dystrophic calcs - 38segmental odontomaxillary dysplasiadevl disorder
unilateral enlargement of bone + gingiva of post maxilla with missing or abnormal teeth (PM missing or abnormal primary M)
delayed eruption
granular, RO bone without trabeculae
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- SP D2 Flashcards on Developmental Abnormalities (path 2), created by Katie Hayes on 14/04/2020.
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