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40 Cards in this Set
- Front
- Back
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what are the 4 types of amolegenesis imperfecta
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type1: hypoplastic
type2: hypocalcified type3: hypomaturation type4: hypoplastic-hypomaturation |
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what inherited disorder is this?
enamel matrix not properly laid enamel not thick pitted teeth |
amelogenesis imperfecta
type 1 hypoplastic |
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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 |
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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 |
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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 |
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hereditary opalescent dentin
brown/blue hue dentin is soft=chipping of enamel no pulp chambers/root canals short thin roots cervical constriction |
dentinogenesis imperfecta
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normal crowns, abnormal roots
half moon pulps of permanent teeth short blunted roots normal crown color |
radicular dentin dysplasia
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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
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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 |
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what is this syndrome
webbed neck broad chest wide spaced nipples sparse hair, infantile genitalia 44chromosomes and 1 X |
TURNER SYNDROME
only in females |
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what is the male version of Turner syndrome? what are it's clinical features?
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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 |
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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 |
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describe the clinical manifestations of NEVOID BASAL CELL CARCINOMA SYNDROME
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wide spaced eyes (hypertelorism)
broad nasal root basal cell carcinomas in early years palmar and plantar pitting splayed/bifurcated ribs, spina bifida |
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what are the oral manifestations of NEVOID BASAL CELL CARCINOMA SYNDROME
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multiple OKC's that develop early in life
interfere w development of jawbone and teeth recur frequently |
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NEUROFIBROMATOSIS
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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 |
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melanotic pigmentation (freckles) around eyes nose and mouth
gastorintestinal polyps- small intestines, not malignant, "hamartomas" |
peutz jeghers syndrome
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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) |
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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 |
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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
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what is the tx and prognosis for OKC's
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surgical excision and osseous curettage
high recurrence rate |
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cyst in the mandibular cuspid/premolar area
aysmptomatic, M>F lateral aspect of vital tooth root |
lateral periodontal cyst
tx- surgical excision recurrence rare |
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describe a gingival cyst
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small bulge or swelling of ATTACHED GINGIVA OR INTERDENTAL PIPILLAE in mand cuspid/premolar area
soft tissue counterpart of lateral perio cyst |
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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 |
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microscopic features of a dermoid cyst
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lined by keratinized strat squam
lumen filled w keratin CT wall contains hair follics, sebaceous glands, sweat glands |
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dermoid cysts are:
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present at birth or young age
anterior floor of the mouth cause posterior displacement of the tongue dough like consistency when palpated |
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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 |
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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 |
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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 |
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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? |
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supernumerary teeth
common areas? tx? |
maxilla>mandible
mesiodens (btwn centrals) distomolar (4th molar) |
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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 |
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macrodontia
types tx |
abnormally large teeth
true generalized- gigantism generalized relative- large teeth small jaw (hereditary) involving one tooth- uncommon, facial hemihypertrophy |
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define gemination
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single TOOTH GERM tries to DIVIDE = INCOMPLETE FORMATION OF 2 TEETH
deciduos anterior decid mand incisors or perm max incisors |
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define fusion
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union of two normally seperated tooth germs
CONFLUENCE OF DENTIN deciduous incisors |
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define concrescence
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two teeth united by CEMENTUM
crowding or trauma results in close approximation of tooth roots max molars |
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define dilaceration
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abnormal curve or angle of tooth roots
trauma of tooth germ during development |
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define enamel pearl
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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 |
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define taurodontism
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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 |
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define dens in dente
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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 |
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define enamel hypoplasia
reasons |
many reasons:
amelogenesis imperfecta febrile illness vitamin deficiency local infection ingestion of fluoride congenital syphilis |
