Class I Flashcards
______% of children have tooth decay before they reach kindergarten
40%
if a child has a restricted nutritional intake, altered growth and development, and/or can’t participate in life activities they are said to have
dental disability
T/F restorations last forever
False. restorations have a finite lifespan
what does contemporary management include?
-risk assessment
-understanding disease process for that individual
-active caries surveillance to assess disease progression and manage with preventive services, supplemented with restorative when necessary
when evaluating when to restore what should the clinical criteria include?
-visual detection of enamel cavitations of shadowing of the enamel and/or
-radiographic recognition of the enlargement of lesions over time
-eval how long the tooth will remain present
what are the benefits of restorative therapy?
-removing cavitations/defects to eliminate areas that can get caries
-stopping the progression of demineralization
-restoring integrity of tooth structure
-preventing spread of infection into dental pulp
-preventing shifting of teeth due to loss of tooth structure
what are the risks of restorative therapy
-reducing longevity of teeth by increasing susceptibility to fracture
-recurrent lesions
-restoration failures
-pulp exposure during excavation
-future pulpal complications
-Iatrogenic damage to adjacent teeth
what are some considerations in restoring of primary dentition?
pt’s age
caries risk assessment
morphology of primary teeth
parental wishes
the _____ & _____ surfaces of the primary form a prominent bulge just occlusal to gingival margin
Buccal & Lingual
T/F primary teeth have thinner enamel and dentin layers when compared to permanent
True
Primary crowns have ____________ contact areas b/w primary molars
broad flat
T/F primary teeth have nearly the same mineral content as permanent teeth
True
The pulps of primary teeth are _________ than that of the permanent tooth in relation to crown size
larger
the pulps of primary teeth are __________ to the outer surface of the tooth vs permanent
closer
what pulp horn is pronounced occlusally in primary molars
mesial
what will there usually be under each cusp of a primary molar?
a pulp horn
the roots of primary molars are _______ and more ________ in relation to crown size
longer, slender
canals of primary molars are __________ and more tortuous
ribbon-like
what will the primary molars do as they approach the apex? why?
flared. to accommodate the permanent tooth underneath
what will rounded internal line angles do for class I preps of primary teeth
decrease stress in tooth by 40%
what will incrasing the width of the isthmus or depth of the pulpal floor do for class I preps of primary teeth
decrease the stresses in restoration
what do the grooves and roughness on the surface of the class II preps do on primary molars?
increase or concentrate the stress in restoration
what do buccal and lingual walls that converge toward the occlusal surface do for class I preps of primary teeth
decrease marginal fractures
what angles are difficult to condense into?
acute or sharp angles
what are the most caries susceptible teeth regarding morphology in primary molars?
deep occlusal fissures and broad flat interproximal contacts
in #L and #S where would you expect to see an exposure?
the MB
the primary enamel is _______ as thick as the permanent enamel
1/2
what is the overall prep depth?
1.5 mm
