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43 Cards in this Set

  • Front
  • Back
what is agenesis of one or more teeth referred to as

Anodontia - missing all teeth congenitally
what is the rank of most commonly congenitally missing teeth
3rd molars, mand 2nd PM, max 2nd PM, max LI
What is the key to diagnosis when considering hypodontia as a ruling
what is an ectodermal defect in hair, sweat glands and teeth referred to as
Ectodermal Dysplasia

leads to conical shaped teeth
what term is used for supernumerary teeth

usually occur in max midline between CI and also in mand PM area
what is the most common supernumerary tooth called
mesiodens - usually small tooth with a conical shaped crown and short root
what is the name of a microdont tooth located on the buccal or lingual surface of a normal tooth
what is the term used for a microdont tooth distal to the last tooth in the arch
T or F there has been pts with a fourth molar
T - they work at the carnival that comes thru at state fair time
what is the change in position of adjacent teeth referred to as

Oftern overlooked due to curvature of arch and can cause esthetic or occlusal problems
what is it called when one tooth erupts into an abnormal location but is still within the dental arch

this can result in retention of primary teeth for a long time because the permanent tooth came in at the location of a congenially missing tooth instead of up thru the spot that would have knocked the primary tooth out
what are teeth that are smaller than normal called
what is the most common microdont tooth
Max LI - "Peg Lateral"

Usually occurs bilaterally and is familial in nature
what is the second most common microdont tooth
3rd M
what is an invagination of the enamel that resembles a deep lingual pit with close proximity to the pulp at the apex
Dens Invagination - most common tooth is max LI especially prominent in "peg laterals"

radiographically appears as a tear drop shaped invagination of the enamel
what is a single macrodont usually the result of
fusion or gemination
what do macrodonts lead to usually
perio disease and crowding
what is it called when 2 tooth buds unite to form 1 tooth
fusion - more common in primary than perm dentition

has 2 separate pulp canals
where does fusion usually occur in primary dentition
between mand LI and Canines
Where does fusion usually occur in perm dentition
between CI and LI
when one tooth bud tries to split into 2 separate teeth what is it called

usually 1 pulp canal, groove between "2" parts is susceptible to caries
what is the joining of 2 teeth by cementum only called

can be from crowding or from postinflammatory process which areas of damaged root are repaired by cementum
what is a supernumerary cusp called
dens Evaginatus

usually found in mand PM
how are dens evaginatus(supernumerary cusps) best treated
seal it before caries gets a chance to start

this is done because the pulp horn tends to lie relatively close to surface
what is an exageration of the cingulum on max CI called
Talon Cusps

fissure between 2 cusps is caries prone
What does failure of the ameloblast to form enamel correctly result in
Amelogenesis Imperfecta

results in HYPOmineralized enamel which fx easily and abrades easily
what is a hereditary disorder that affects the formation of dentin
Dentinogenesis Imperfecta

failure of odontoblasts to form DEJ and dentin correctly
what color can be displayed if there is an abscence of enamel and increased dentin thickness
gray-blue shade
what are some radiographic signs of DI
bulbous crowns, short tapered roots, progressive obliteration of the pulp canals

usually requires fixed prostethics
what is the wearing away of tooth structure from tooth to tooth contatct

this is PHYSIOLOGIC not pathologic
what is the pathologic wearing away of tooth structure through an abnormal mechanical process

can be caused by habits such as holding nails or hairpins between teeth
what is the pathological loss of tooth structure at or under the CEJ caused by flexure forces

appears as a V shaped defect at cervical area on the buccal surface
the loss of tooth structure to chemical action is called

caused by chronic vomiting from pregnancy, bulimia, lemon-sucking habit, chroic GI reflux or too many Carbohydrate beverages
what do fx teeth need to be evaluated for
mobility, pulpal exposure and trauma to surrounding area
What are some signs of a fx tooth
sharp pain senistivity to percussion or biting pressure
T or F teeth with vertical fxs are restorable
F, they are to be extracted
what kinds of things can cause an anterior open bite
thumb sucking, tongue thrusting
if mammelons arent present in a person with an ant open bite what does that mean
that the open bite occured later in life

could be due to changes in TMJ due to something like rheumatoid arthritis
what does it mean if you see a pink spot beneath the enamel
Internal Resorption

non vital tooth due to trauma, rupture of blood vessels. Usually asymptomatic and tx is RCT
deposition of hard tissue in the root canal space can cause what
Calcific Metamorphosis
up to what age should you not give tetracycline to patients
8 years

amount of staining directly related to qty of drug absorbed
what colors can chromogenic bacteria cause teeth to stain
orange, yellow, green , brown or black
what can excess fluoride(1.2 ppm to 4 ppm) in the water of patients lead to

optimum Fl levels are 0.7 - 1.0 ppm