EFDA Bases and Liners Harcum Exam
Questions & Answers (Grade A+)
Why do we use bases and liners? -
correct answer ✅1. to protect the pulp
2. to aid in pulp recovery
3. both
pulpitis -
correct answer ✅inflammation of the pulp
causes of pulpitis -
correct answer ✅caries, traumatic occlusion, cutting bus,
dessication, condensation pressure, chemical irritation, temp
changes, dimensional changes in restorative materials, lack of
marginal seal
cavity liners -
correct answer ✅"low strength bases", placed in the deepest
portion of prep on axial and pulpal walls, placed on dentin or
exposed pulp to protect pulp from irritants... CaOH, ZOE,GI
cavity varnish -
correct answer ✅seals dentinal tubules to prevent acid,
saliva,debris from pulp, under amalgams only, placed on all walls
, EFDA Bases and Liners Harcum Exam
Questions & Answers (Grade A+)
cement bases -
correct answer ✅"high strength bases" mixed thick protect pulp
and provides mechanical support, placed on pulpal floor and axial
wall. GI, reinforced ZOE, ZnPhos, polycarb
reinforcers -
correct answer ✅bases used to protect pulp from condensing
pressure.
Insultator=reinforcer
insulators -
correct answer ✅bases that protect pulp form thermal irritation
poor thermal conductors, low CTC
thickness is proportional to amount of insulation (ZnPhos, polycarb)
obtundants -
correct answer ✅functions to soothe the sensitive pulp or
decrease irritability
Questions & Answers (Grade A+)
Why do we use bases and liners? -
correct answer ✅1. to protect the pulp
2. to aid in pulp recovery
3. both
pulpitis -
correct answer ✅inflammation of the pulp
causes of pulpitis -
correct answer ✅caries, traumatic occlusion, cutting bus,
dessication, condensation pressure, chemical irritation, temp
changes, dimensional changes in restorative materials, lack of
marginal seal
cavity liners -
correct answer ✅"low strength bases", placed in the deepest
portion of prep on axial and pulpal walls, placed on dentin or
exposed pulp to protect pulp from irritants... CaOH, ZOE,GI
cavity varnish -
correct answer ✅seals dentinal tubules to prevent acid,
saliva,debris from pulp, under amalgams only, placed on all walls
, EFDA Bases and Liners Harcum Exam
Questions & Answers (Grade A+)
cement bases -
correct answer ✅"high strength bases" mixed thick protect pulp
and provides mechanical support, placed on pulpal floor and axial
wall. GI, reinforced ZOE, ZnPhos, polycarb
reinforcers -
correct answer ✅bases used to protect pulp from condensing
pressure.
Insultator=reinforcer
insulators -
correct answer ✅bases that protect pulp form thermal irritation
poor thermal conductors, low CTC
thickness is proportional to amount of insulation (ZnPhos, polycarb)
obtundants -
correct answer ✅functions to soothe the sensitive pulp or
decrease irritability
