1
OHIO EFDA BOARD EXAM LATEST
EDITION 2024-2025. QUESTIONS AND
CORRECT VERIFIED ANSWERS.
GRADED A
_____________ is the fourth hardest tissue in the body that covers the
anatomical roots of teeth - ANSCementum
Abfraction - ANSloss of tooth surface in the cervical area,(gum line) due to
stress and pressure applied to tooth through biting clenching, chewing and
grinding
Abrasion - ANSIn the gingival third, enamel worn away by friction from
something other than tooth on tooth contact, aggressive brushing
At the occlusal and incisal surface - ANSIn which area on the tooth is the
enamel thickest
Attrition - ANSGradual loss of tooth structure or tissue caused by tooth on
tooth contact.
conventional type composite has larger hard filler particles, making it more
susceptible to ___________ - ANSStaining
1
, 2
Coronal polishing involves removing____________ type of stains -
ANSSuparagingival extrinsic
Creep and corrosion can be prevented in an amalgam if ___________
metals is found in the alloy in a high amount? - ANSCooper
dimensional changes of Amalgam - ANSMercury alloy ratio (high amount of
mercury)
Trituration time ( longer mixing=less expansion, more contraction)
Condensation increasing pressure during placement ( less expansion)
Contamination moisture ( increase expansion, especially in alloy that has
zinc)
Temperature change( causes amalgam to change shape, allowing fluid to
travel back and forth inin and out between amalgam and tooth=
percolation.
Enamel is the second hardest tissue in the body. - ANSFalse
Erosion - ANSChemical loss of materialized tooth structure caused by
exposure to acid, bulimia, phosphoric citric acid, Gerd, meth mouth
Exothermic describes the setting reaction that occurs in what cement when
use as a base? - ANSZinc phosphate
Green stones are used to finish a amalgam by removing __________ -
ANSBulky or excess amalgam
2
OHIO EFDA BOARD EXAM LATEST
EDITION 2024-2025. QUESTIONS AND
CORRECT VERIFIED ANSWERS.
GRADED A
_____________ is the fourth hardest tissue in the body that covers the
anatomical roots of teeth - ANSCementum
Abfraction - ANSloss of tooth surface in the cervical area,(gum line) due to
stress and pressure applied to tooth through biting clenching, chewing and
grinding
Abrasion - ANSIn the gingival third, enamel worn away by friction from
something other than tooth on tooth contact, aggressive brushing
At the occlusal and incisal surface - ANSIn which area on the tooth is the
enamel thickest
Attrition - ANSGradual loss of tooth structure or tissue caused by tooth on
tooth contact.
conventional type composite has larger hard filler particles, making it more
susceptible to ___________ - ANSStaining
1
, 2
Coronal polishing involves removing____________ type of stains -
ANSSuparagingival extrinsic
Creep and corrosion can be prevented in an amalgam if ___________
metals is found in the alloy in a high amount? - ANSCooper
dimensional changes of Amalgam - ANSMercury alloy ratio (high amount of
mercury)
Trituration time ( longer mixing=less expansion, more contraction)
Condensation increasing pressure during placement ( less expansion)
Contamination moisture ( increase expansion, especially in alloy that has
zinc)
Temperature change( causes amalgam to change shape, allowing fluid to
travel back and forth inin and out between amalgam and tooth=
percolation.
Enamel is the second hardest tissue in the body. - ANSFalse
Erosion - ANSChemical loss of materialized tooth structure caused by
exposure to acid, bulimia, phosphoric citric acid, Gerd, meth mouth
Exothermic describes the setting reaction that occurs in what cement when
use as a base? - ANSZinc phosphate
Green stones are used to finish a amalgam by removing __________ -
ANSBulky or excess amalgam
2
