1
PA EFDA Board Exam Study Guide
2024-2025. Questions and Correct
Verified Answers. Graded A
90% of caries in children are - ANS Pit and fissures
A cavity sealer is used to seal: - ANS dentin tubules, like a liner
Abfraction - ANSWearing away tooth structure by Uneven forces at gingival
margin
Abrasion - ANSWearing away tooth by brushing habits, mechanical
motions
Abrasive polishing agent for amalgam - ANSTin oxide
Acellular cementum - ANSCannot be repaired. Located at cervical third of
apex
Acid etching - ANS37% phosphoric acid, a micromechanical bonding
technique, bonds a material to tooth structure, creates a rough surface=
removes smear layer, fills surface irregularities, 15 secs & rinse 30 secs
admixed amalgam - ANSSpherical and lathe cut mixed, better contacts
Class II
1
, 2
Advantages of composite - ANSIs esthetic, durable, placed in one appt.,
good compressive strength, preparation more conservative than amalgam,
bonding helps support surrounding tooth, better marginal seal, resists
solubility and wear
Alloy particle - ANSLathe cut, spherical, admixed
amalgam carvers - ANSHollenbach and Discoid/ cleoid
Amalgam strength - ANSGood compressive strength, less tensile strength
Amalgamation - ANSMetallic restorations- hard and durable. Formed from
reaction of alloy + mercury
Ameloblasts - ANSCells that form enamel
Anatomical crown - ANSPortion of the tooth that is covered with enamel
(non-visible)
Anticariogenic - ANSPrevent dental carries, Foods that do not lower the
biofilm pH; encourage remineralization (ex: fluoride)
Attrition - ANSWearing away tooth structure from Tooth to tooth contact
auto matrix - ANSMatrix system designed to establish a temporary wall for
tooth restoration without use of a retainer, used for class II restorations
2
, 3
Axial wall - ANSInternal surface of a cavity preparation, positioned
vertically, parallel to long axis of tooth
Band extension - ANSThe matrix band must extend 0.5-1.5mm to the
height of the tooth during cavity prep
Base - ANSThick layer at pulpal floor that Provides thermal insulation.
Needed if there is less than 0.5mm of dentin remaining
Bevel Advantages - ANSRemoves fluoride rich enamel, provides more
tooth structure
Bevel Prep - ANS45°
Bifurcated - ANSSingle tooth with 2 roots
BIS-GMA - ANSbisphenol A-glycidyl methylacrylate; plastic material used
for dental sealants
IS NOT AN ETCHANT OR CONDITIONER
Bow of dental dam clamp - ANSthe rounded portion of the clamp that
extends through the dental dam, bow is positioned toward the distal
Burnisher instruments - ANSRub, blend, smooth filling material
Calcium hydroxide - ANSPulp stimulator - placed 1st, used as base, liner or
pulp cap, helps secondary dentin form, bioactive
3
PA EFDA Board Exam Study Guide
2024-2025. Questions and Correct
Verified Answers. Graded A
90% of caries in children are - ANS Pit and fissures
A cavity sealer is used to seal: - ANS dentin tubules, like a liner
Abfraction - ANSWearing away tooth structure by Uneven forces at gingival
margin
Abrasion - ANSWearing away tooth by brushing habits, mechanical
motions
Abrasive polishing agent for amalgam - ANSTin oxide
Acellular cementum - ANSCannot be repaired. Located at cervical third of
apex
Acid etching - ANS37% phosphoric acid, a micromechanical bonding
technique, bonds a material to tooth structure, creates a rough surface=
removes smear layer, fills surface irregularities, 15 secs & rinse 30 secs
admixed amalgam - ANSSpherical and lathe cut mixed, better contacts
Class II
1
, 2
Advantages of composite - ANSIs esthetic, durable, placed in one appt.,
good compressive strength, preparation more conservative than amalgam,
bonding helps support surrounding tooth, better marginal seal, resists
solubility and wear
Alloy particle - ANSLathe cut, spherical, admixed
amalgam carvers - ANSHollenbach and Discoid/ cleoid
Amalgam strength - ANSGood compressive strength, less tensile strength
Amalgamation - ANSMetallic restorations- hard and durable. Formed from
reaction of alloy + mercury
Ameloblasts - ANSCells that form enamel
Anatomical crown - ANSPortion of the tooth that is covered with enamel
(non-visible)
Anticariogenic - ANSPrevent dental carries, Foods that do not lower the
biofilm pH; encourage remineralization (ex: fluoride)
Attrition - ANSWearing away tooth structure from Tooth to tooth contact
auto matrix - ANSMatrix system designed to establish a temporary wall for
tooth restoration without use of a retainer, used for class II restorations
2
, 3
Axial wall - ANSInternal surface of a cavity preparation, positioned
vertically, parallel to long axis of tooth
Band extension - ANSThe matrix band must extend 0.5-1.5mm to the
height of the tooth during cavity prep
Base - ANSThick layer at pulpal floor that Provides thermal insulation.
Needed if there is less than 0.5mm of dentin remaining
Bevel Advantages - ANSRemoves fluoride rich enamel, provides more
tooth structure
Bevel Prep - ANS45°
Bifurcated - ANSSingle tooth with 2 roots
BIS-GMA - ANSbisphenol A-glycidyl methylacrylate; plastic material used
for dental sealants
IS NOT AN ETCHANT OR CONDITIONER
Bow of dental dam clamp - ANSthe rounded portion of the clamp that
extends through the dental dam, bow is positioned toward the distal
Burnisher instruments - ANSRub, blend, smooth filling material
Calcium hydroxide - ANSPulp stimulator - placed 1st, used as base, liner or
pulp cap, helps secondary dentin form, bioactive
3
