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70 Cards in this Set
- Front
- Back
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what is the twinning of a tooth?
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gemination
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what is gemination
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twinning of a tooth
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what teeth are most likelyh to have gemination?
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incisors
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what is the fusion of 2 adjacent teeth, enamel dentin or both?
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fusion
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what is fusion of teeth
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fusion of 2 adjacent teeth, via enamel dentin or both
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how can you tell difference between fusion and gemination?
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fusion is abnormal # of teeth(less) and gemination is normal # of teeth
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what is the joining of the roots of 2 teeth via cementum? where does it esp occur?
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concrescence
maxillary molars |
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what is a concrescence and where does it usually occur?
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fusion of 2 adjacent teeth's roots' cementum,
maxillary molars |
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What is a sharp bend of the roots of teeth?
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dilaceration
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what is a dilaceration
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sharp bend in the roots of a tooth
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what is taurodontism?
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enlarged pulp chamber
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what is an enlarged pulp chamber
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taurodontism
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what is dens in dente?
where does it most often occur? |
tooth within a tooth
max lateral incisor |
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what is the term for a tooth within a tooth, and where is it most often?
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dens in dente
max lateral incisor |
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what is the term for enamel on a root surface? what is the issue?
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enamel pearl
can result in loss of perio attachment |
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what is an enamel pearl? what is the issue?
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enamel growth on the root, can lead to loss of perio attachment
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What teeth are most likely to be absent in partial anodontia? in order
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3m, 2pms=lateral incisors
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complete anodontia is____and can be often seen in...
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rare
ectodermal dysplasia |
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7 things about ectodermal dysplasia
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hypohydrosis - dry sweat glands
hypotrichosis - weird nails hypodontia frontal bussing low nasal bridge protuberant lips obliquely inserted ears |
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hypohydrosis - dry sweat glands
hypotrichosis - weird nails hypodontia frontal bussing low nasal bridge protuberant lips obliquely inserted ears what does this described |
ectodermal dysplasia
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likely locations of supernumerary teeth (4)
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4th molars
mesiodens - between CIs odontoma - masses of teeth lingual to molars |
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2 syndromes for supernumerary teeth
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gardner syndrome, cleidocranial dysplasia
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familial colorectal polyposis on APC(a tumor supressor gene) leeds to supernum teeth, impacted teeth
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gardner syndrome or Peutz-jegher
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what is the difference between gardner syndrome and peutz jegher?
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gardner has malignant potential
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Cleidocranial dysplasia genes
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CBFA RUNX2
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delayed eruption 5 causes
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rickets
certinism clediocran dysplasia hypothyroid (adult) local factors, like impaction |
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what 4 teeth are most likely to undergo delayed eruption
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3rd m
max canine premolars supernumerary teeth |
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3rd m
max canine premolars supernumerary teeth these teeth are most likely to... |
be delayed in eruption
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ankylosed teeth causes (2)
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infection
trauma |
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which teeth are likely to be ankylosed, primary or permanenet
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primary
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what is the difference between attrition and abrasion?
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physiological wear is attrition
pathologic is abrasion |
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abfraction is what
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loss of cervical tooth struture from FLEXION due to repeated occlusal stress
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what is loss of cervical tooth structure due to flexion from repeated occlusal stress
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abfraction
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what is loss of tooth structure via chemical?
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erosion
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what is erosion
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loss of tooth due to chemical means
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what is loss of occlusal enamel so that amalgams become elevated?
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perimolysis
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what is perimolysis
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loss of occlusal enamel due to chemical, resulting in elevated amalgams
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altered organization of dentin/enamel/cementum - possibly due to loss of vascular supply?
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odontodysplasia
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what is odontodysplasia?
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altered organization of dentin/enamel/cementum, possibly due to loss of vascular supply
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Amelogenesis imperfecta has 4 types?
Type 1 - Type 2 - Type 3 - Type 4 - |
type 1- hypoplastic
type 2 - hypomaturation type 3 - hypocalcified type 4 - hypomaturation + hypoplastic = hypoplastic pits |
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what type of amelogenesis imperfecta is assoc with hypoplastic pits?
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type 4 - hypomaturation/plastic
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what causes amelogenesis imperfecta?
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it is inherited
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is amelogenesis caused by trauma or is it inherited?
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inherited
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what is the equivalent to amelogenesis imperfecta that is caused by a nutritional/metabolic/bitamin/disease /inflammation/fluoride/infection/trauma?
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enamel hypoplasia
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what is the cause of enamel hypoplasia?
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developmental distubrance (infection/nutrition/metabolic /vitamin/disease etc)
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how do you distinguish enamel hypoplasia from amelogenesis imperfect?
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EH has a BAND
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What is turner's tooth?
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a permanent tooth that gets enamel hypoplasia due to a primary tooth that had an infection
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what is a tooth that gets Enamel hypoplasia due to an overlying primary tooth's infection?
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turner's tooth
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what 2 areas are most affected by enamel hypoplasia?
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anterior
1st molars |
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Osteogenesis imperfecta
2 clinical signs cause |
bowing of legs
BLUE SCLERA cola1/2 gene problem - for collagen |
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what disease is caused by mutaiton in cola1/2 gene for collagen, resulting in a BLUE SCLERA
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osteogenesis imperfecta
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what part of the tooth does osteogenesis imperfecta effect?
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dentin (collagen)
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3 types of dentinogenesis imperfecta
type 1 - type 2 - type 3 - |
type 1 - coupled to osteogenesis imperfecta
type 2 - independent, moreso in primary, DSPP mutation type 3 - brandywine isolate, pulpal exposure, shell teeth |
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what type of dentinogenesis imperfecta is this?
coupled to Osteogenesis imperfecta? |
type 1
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what type of dentinogenesis imperfecta is this?
primary and secondary affected, moreso in the primary, DSPP mutation |
type 2
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what type of dentinogenesis imperfecta is this...
brandywine isolate, primary pulpal exposure shell teeth |
type 3
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what condition results in OPALESCENT DENTIN, which are grey/almost see-thru, with obliterated pulp chambers
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dentinogenesis imperfecta
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dentin dysplasia is caused by
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its inherited
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Which type of dentin dysplasia is this
normal shape/form, with an amber color ROOT-LESS TEETH with CHEVRONS |
type 1
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what type of dentin dysplasia is this?
"Thistle" chamber, many pulp stones brown teeth DSPP gene |
type 2
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Type 2 dentin dysplasia is what
chamber apperance teeth color gene involvement? |
thistle chamber
brown DSPP gene |
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type 1 dentin dysplasia is what
chamber apperance teeth color gene involvement? |
chevrons chamber
amber no gene Rootless teeth |
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give 5 causes of endogenous stains
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fluoride
tetracycline porphyrins bilirubin hemosiderm |
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hemosiderm causes what in teeth?
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endogenous staining, from trauma
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bilirubin causes what in teeth?
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endogenous staining, from liver/gall problems
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porphyrins causes what in teeth?
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endogenous staining, from broken down Hgb ,metabolic disorder
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what is unique about porphyrins stained teeth?
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RED under fluorescence
urine that is normal but turns red with time |
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resorption can be from 2 sources
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internal - pulp
external - PDL |
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what process results in "pink tooth"
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resorption
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how do you treat a tooth that hasundergone resorption
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endo
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