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40 Cards in this Set

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what are the 4 types of amolegenesis imperfecta
type1: hypoplastic
type2: hypocalcified
type3: hypomaturation
type4: hypoplastic-hypomaturation
what inherited disorder is this?
enamel matrix not properly laid
enamel not thick
pitted teeth
amelogenesis imperfecta
type 1 hypoplastic
what inherited disorder is this?
enamel normal thickness but poorly calcified.
enamel lost very quickly leaving exposed dentin
teeth yellow/orange and very soft
amelogenesis imperfect
type 2 hypocalcified
what inherited disorder is this
enamel normal thickness but has mottled appearance
soft enamel, large amount of enamel matrix
enamel chips easily
amelogenesis imperfecta
type 3 hypomaturation
MMMottled appearance, hypoMMaturation, lots of enamel MMatrix
what inherited disorder is this
associated to taurodontism
thin enamel, pitted, yellow brown
amelogenesis imperfecta
type 4 hypoplastic hypomaturation
combining type 1 and type 3
hereditary opalescent dentin
brown/blue hue
dentin is soft=chipping of enamel
no pulp chambers/root canals
short thin roots
cervical constriction
dentinogenesis imperfecta
normal crowns, abnormal roots
half moon pulps of permanent teeth
short blunted roots
normal crown color
radicular dentin dysplasia
deciduos- translucent w amber color, perm- normal color
decid- no pulp chambers and small root canals
perm- bow tie shaped pulp chambers
coronal dentin dysplasia
what are the clinical/oral manifestations of trisomy 21?
what is the more popular name for trisomy 21?
down syndrome
95% due to late maternal age
space btwn great toe and 2nd toe,
fissured tongue, macroglossia
perdio disease
hypodontia and premature loss of teeth
what is this syndrome
webbed neck
broad chest wide spaced nipples
sparse hair, infantile genitalia
44chromosomes and 1 X
TURNER SYNDROME
only in females
what is the male version of Turner syndrome? what are it's clinical features?
Klinefelter Syndrome
tall, low IQ, female distribution of hair, gynecomastia
44autosomal chroms, 3 sex chroms (XXY)
detected after puberty
more X chromosomes more extreme features are and lower IQ
hypoplastic maxilla
intestinal polyps of large intestine: become malignant around age 30

numerous osteomas of frontal bone mandible and maxilla
multiple odontomas
hypercementosis
GARDENER SYNDROME
want to get rid of the weeds (malignant polyps)= gardener
describe the clinical manifestations of NEVOID BASAL CELL CARCINOMA SYNDROME
wide spaced eyes (hypertelorism)
broad nasal root
basal cell carcinomas in early years
palmar and plantar pitting
splayed/bifurcated ribs, spina bifida
what are the oral manifestations of NEVOID BASAL CELL CARCINOMA SYNDROME
multiple OKC's that develop early in life
interfere w development of jawbone and teeth
recur frequently
NEUROFIBROMATOSIS
many neurofibromas present at birth or early years (malignant 3-15%)
cafe au lait marks preceding fibromas
neurofibromas seen 10% of pts on lateral tongue or gingiva
melanotic pigmentation (freckles) around eyes nose and mouth
gastorintestinal polyps- small intestines, not malignant, "hamartomas"
peutz jeghers syndrome
fusion of the lingual frenum to the floor of the mouth
speech problems/ gingival recession or bone loss
what is the tx
anklyoglossia
tx: surgical removal or the lingual frenum (frenectomy)
describe a dentigerous cyst
radiographically
tx?
forms around crown of unerupted tooth
fluid btwn reduced enamel epi and crown
third molar area
asymptomatic or tooth displacement

unilocular around crown of impacted tooth
lined by cuboidal or stratified squam epi
fibrous CT wall
excision of cyst and tooth
unique cyst- found in mand third molar area
moves teeth and resorbs tooth structure
well defined, uni/multi lobular
stratified squam epi- 8 to 10 cell layers thick
luminal epi is parakeratin
basal cell layer is plaisaded
flat interface btwn epi and CT
ODONTOGENIC KERATOCYST
what is the tx and prognosis for OKC's
surgical excision and osseous curettage
high recurrence rate
cyst in the mandibular cuspid/premolar area
aysmptomatic, M>F
lateral aspect of vital tooth root
lateral periodontal cyst
tx- surgical excision
recurrence rare
describe a gingival cyst
small bulge or swelling of ATTACHED GINGIVA OR INTERDENTAL PIPILLAE in mand cuspid/premolar area
soft tissue counterpart of lateral perio cyst
what forms a nasopalatine canal cyst
what are its features
arises from epithelial remnants of the embryonic nasopalatine ducts
40-60yo M>F
asymptomatic
heart shaped radiolucency
microscopic features of a dermoid cyst
lined by keratinized strat squam
lumen filled w keratin
CT wall contains hair follics, sebaceous glands, sweat glands
dermoid cysts are:
present at birth or young age
anterior floor of the mouth
cause posterior displacement of the tongue
dough like consistency when palpated
cyst found anywhere from the foramen cecum to the thyroid gland
most cases below the hyoid bone
young individs under 20
dysphagia or difficulty extending tongue
midline of neck
thyroglossal tract cyst
tx- excision of cyst and tract, including poriton of hyoid bone and muslce
pseudocyst: static bone cyst
radiographically?
caused by?
tx?
posterior mandible inferior to the mandibular canal
caused by lingual depression in mandible surrounding salivary glands
variant of normal= no tx
pseudocyst; simple bone cyst
caused by
radiographically
tx
traumatic bone cyst, pathologic cavity in bone, asymptomatic
scalloped btwn roots of teeth on xray
curettage to establish bone fill
define hypodontia
common areas?
tx?
lack of one or more teeth
permanent>decid
max/man third molars
max laterals
mand second premol
tx; prosth, ortho eval, component of a syndrom?
supernumerary teeth
common areas?
tx?
maxilla>mandible
mesiodens (btwn centrals)
distomolar (4th molar)
microdontia
types?
tx?
one or more teeth smaller than normal
true generalized- pituitary dwarfism
generalized relative- small teeth normal jaw (hereditary) microdontia of 1 tooth- peg laterals
extractions/ cosmetic
macrodontia
types
tx
abnormally large teeth
true generalized- gigantism
generalized relative- large teeth small jaw (hereditary)
involving one tooth- uncommon, facial hemihypertrophy
define gemination
single TOOTH GERM tries to DIVIDE = INCOMPLETE FORMATION OF 2 TEETH
deciduos anterior
decid mand incisors or perm max incisors
define fusion
union of two normally seperated tooth germs
CONFLUENCE OF DENTIN
deciduous incisors
define concrescence
two teeth united by CEMENTUM
crowding or trauma results in close approximation of tooth roots
max molars
define dilaceration
abnormal curve or angle of tooth roots
trauma of tooth germ during development
define enamel pearl
small spherical enamel projections due to abnormal displacement of ameloblasts during formation
max molars
cementum near root furcation
contains enamel, or also dentin and pulp
define taurodontism
bull like teeth
elongated pulp chambers
short roots
single molar or multiple in one quad
xray- large long pulp chamber, short roots, furcation near apices
define dens in dente
tooth within a tooth
enamel organ invaginates crown of tooth before mineralization
deep pit/crevice near cingulum or normal crown
invaginated tooth keeps communication with outside of tooth
anterior, max lateral
often nonvital, susceptible to caries/infection= prophylactice restortaion
define enamel hypoplasia
reasons
many reasons:
amelogenesis imperfecta
febrile illness
vitamin deficiency
local infection
ingestion of fluoride
congenital syphilis