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PA EFDA BOARD EXAM QUESTIONS WITH 100%
VERIFIED CORRECT ANSWERS 2025/202 6 LATEST
UPDATE
"Reinforcers - CORRECT ANSWER used to protect the pulp form the pressures exerted on it
during amalgam placement. a material can be an insulator and a reinforcer and the same time"
"Insulators - CORRECT ANSWER also referred to as bases and are placed to insulate the pulp
from thermal irritation"
"Types of Insulators - CORRECT ANSWER ZOE, zinc phosphate cement, and zinc polyacrylic
cement"
"Obtundents - CORRECT ANSWER have the ability to soothe the sensitive pulp or reduce the
irritability of a pulp"
"Stimulators - CORRECT ANSWER used in deep cavity preps where the remaining layer of
dentin over the pulp is very thing in order to stimulate a thickening of the dentin layer"
"Calcium Hydroxide is a stimulator it may be used as - CORRECT ANSWER as an indirect pulp
cap over a near exposure and as a direct pulp cap over an area of exposed pulp, used in a very large carious legion"
"The EFDA cannot - CORRECT ANSWER administer or supervise the use of any kind of
anesthesia,N2O, perform endodontic procedures or conduct any type of dental exam. Diagnoses and treatment plans are also prohibited."
"How many hours of Continuing Ed do EFDA's need? - CORRECT ANSWER 10hrs"
"Areas of Continuing Ed that are accepted include: - CORRECT ANSWER 1.diagnosis and
treatment of oral pathosis 2.clinical and technological subjects 3.abuse and neglect 4.emergency procedures excluding CPR"
"Areas of Continuing Ed that are not accepted - CORRECT ANSWER 1.billing
2.office management 3.communication skills 4.insurance reimbursment"
"Contraindications for sealants include: - CORRECT ANSWER 1.rampant caries
2.interproximal lesions 3.tooth has been in the mouth for several years and has no decay"
"How many days do EFDA's have to report name or adress changes to the state board? -
CORRECT ANSWER 10 days"
"When are EFDA Continuing Ed hours due by? - CORRECT ANSWER March 31st biennually"
"3 round protuberances - CORRECT ANSWER Mamelons"
"What is found on both posterior and anterior teeth? - CORRECT ANSWER Marginal ridges"
"A ligual pit is most commonly found on what teeth #'s? - CORRECT ANSWER 7 and 10"
"What molar is likely to have 3 buccal cusps? - CORRECT ANSWER Mandibular first"
"The label Mesiobucco-occlusal is appropriate for? - CORRECT ANSWER Point Angle of a
posterior tooth"
"On a maxillary first premolar what is the groove that sperates the buccal and lingual cusps? -
CORRECT ANSWER Central groove"
"The molar with a Y,H, or U pattern - CORRECT ANSWER Mandibular second premolar"
"A facial and lingual triangular ridge join to form? - CORRECT ANSWER Transverse ridge"
"Cusps for a mandibular first molar - CORRECT ANSWER mesiolingual, mesiofacial,
distolingual, distofacial, distal"
"Major difference between first and second molars? - CORRECT ANSWER 1st molars has 5
cusps, 2nd molars have 4 cusps"
"Which is true of oblique ridges? - CORRECT ANSWER Only Maxillary molars have Oblique
ridges"
"Facial surfaces of teeth include what? - CORRECT ANSWER Labial and Buccal surfaces"
"Instruments used to place amalgams/composite resins into preps - CORRECT ANSWER
Compactors"
"The radicular pulp continues with the tissues of the periapical area via the - CORRECT
ANSWER Apical Foramen"
"The part of the clamp that is expanded to fit over the tooth - CORRECT ANSWER Jaw"
"Strength and wear rates of a composite are critical to consider when selecting a material for
placement of what class for stength - CORRECT ANSWER class I,II, and III"
"The most versitile composite - CORRECT ANSWER Hybrid"
"Prior to placement of a class II - CORRECT ANSWER Both a wedge and matrix band are
needed"
"Sequence for polishing composite - CORRECT ANSWER white stone, brown point, green
point, white point, polishing paste"
"Mechanical retention - CORRECT ANSWER between tooth and bonding agent"
"Chemical retention - CORRECT ANSWER between bonding agent and composite"
"Composites can be - CORRECT ANSWER self cured, light cured and dual cured"
"Post-op sensitivity with posterior restorations can result from - CORRECT ANSWER hyper
occlusion, over etching and operative trauma"
"Which area of a class V amalgam is carved free hand - CORRECT ANSWER the central portion"
"During a class II composite procedure the ring of a sectional matrix is placed - CORRECT
ANSWER after placing the wedge"
"Which situation would cause a composite restoration to fail? - CORRECT ANSWER an internal
void, moisture contamination, and improper light curing"
"When polishing composite its best to go from - CORRECT ANSWER Course to Fine"
"Acid etch technique utilizes - CORRECT ANSWER 35% phosphoric acid"
"The most critical difference that distinguishes composite material is - CORRECT ANSWER the
particle size" "Direct supervision is defined as the dentist remaining where while treatment is being preformed
- CORRECT ANSWER in the facility"
"The sequence for finishing and polishing a composite - CORRECT ANSWER finishing bur,
coarse, medium, fine discs, polishing paste"
"Primer must be dispensed immediately to prevent - CORRECT ANSWER evaporation"
"Coronal polishing - CORRECT ANSWER Removing plaque and stains from coronal surfaces of
teeth" "Polishing does NOT improve the uptake of professionally applied FL2 therefore polishing is
_________ before FL2 application - CORRECT ANSWER NOT NECESSARY"
"Exogenous stains are caused by environmental sources and are classified in to subdivisions
including: - CORRECT ANSWER Intrinsic and Extrinsic stains"
"Which is an example of an endodgenous stain? - CORRECT ANSWER an excessive amount of
fluoride during development of the tooth"
"What polishing paste is recommended for use on filled hybrid composite restoration? -
CORRECT ANSWER Aluminum oxide"
"An Oral Prophy includes - CORRECT ANSWER Removal of calculus and debris"
"Extrinsic/Exogenous stain - CORRECT ANSWER A stain that may be removed from the surface
of the teeth(food and drink)"
"Intrinsic/Endogenous stain - CORRECT ANSWER A stain that cannot be removed for the
surface of the teeth(smoking,tobacco,dental amalgam)"
"Zinc Oxide Eugenol is indicate for what procedure? - CORRECT ANSWER sedative temporary
restoration"
"Walls of a class I - CORRECT ANSWER mesial, pulpal. distal, lingual, and facial"
"Bases and liners are placed on that walls - CORRECT ANSWER axial,pulpal walls"
"The junction of the walls of a cavity prep with the external surface of the tooth is the? -
CORRECT ANSWER Cavosurface"
"A cavity prep that included the mesial incisal angle of a maxillary central incisor - CORRECT
ANSWER class IV"
"The weakest phase of amalgamation - CORRECT ANSWER Gamma Phase"
"Properly mixed amalgam should - CORRECT ANSWER not appear dry or grainy, be slightly
dull, and hold together without crumbling" "The incisal wall of a class V prep of an incisor is termed the what wall of a class V prep of a molar
- CORRECT ANSWER the occlusal surface"
"If a spill of amalgam is undertriturated the result is - CORRECT ANSWER hard, crumbly,
difficult to condense"
"Glass Ionomer cement can be used in what procedure - CORRECT ANSWER post and core
build up"
"What can be used as a sedative dressing under a restoration - CORRECT ANSWER Zinc Oxide
Eugenol"
"The liner of choice to be placed with less than 1mm of tooth structure over the pulp - CORRECT
ANSWER Calcium Hydroxide"
"What base requires cavity vanish under it to protect the pulp? - CORRECT ANSWER Zinc
Phosphate"
"What material would NOT be the best choice for under a composite restoration? - CORRECT
ANSWER Zinc Oxide Eugenol"
"In what direction should the polishing stroke move? - CORRECT ANSWER from the gingival
third toward the incisal/occlusal surface of the tooth"
"What % of sodium is in FL2 - CORRECT ANSWER 5%"
"Systemic FL2 - CORRECT ANSWER ingested by food, drink and FL2 supplements"
"Topical FL2 - CORRECT ANSWER applied directly to the teeth"
"How much FL2 should be consumed - CORRECT ANSWER 1 part per million"
"Anticariogenic means - CORRECT ANSWER prevents caries"
"With FL2 gel and foam you may not eat or drink for how long? - CORRECT ANSWER 30
minutes"
"FL2 does what to tooth surfaces? - CORRECT ANSWER slows demineralization and enhances
remineralization"
"Class I - CORRECT ANSWER occlusals of posterior teeth.
lingual pits of maxillary incisors"
"Class II - CORRECT ANSWER posterior teeth with mesial or distal"
"Class III - CORRECT ANSWER anterior teeth with mesial or distal"
"Class IV - CORRECT ANSWER anterior teeth with an incisal"
"Class V - CORRECT ANSWER gumline"
"Class VI - CORRECT ANSWER always writen out"
"Furcation - CORRECT ANSWER Area between the roots"
"Fulcrum - CORRECT ANSWER Position that provides stability for the operator"
"Bases and liners can be used as - CORRECT ANSWER
sealers,reinforcers,insulators,obtundents, and pulp stimulators"
"Cavity varnishes can be used as - CORRECT ANSWER sealers"
"Minimal depth restoration - CORRECT ANSWER 0.5mm to 1.5mm"
"Enamel restoration - CORRECT ANSWER between 1mm into dentin"
"Near pulp exposure - CORRECT ANSWER less than 0.5mm from the pulp"
"Mercury to alloy ratio - CORRECT ANSWER the greater % or mercury in amalgam the greater
the expansion"
"Trituration time - CORRECT ANSWER the longer mixing time, the less expansion"
"Characteristics of amalgam - CORRECT ANSWER 1.size and shape of alloy particles
2.ratio to mercury alloy 3.manipulation (trituration and condensation)"
"Galvanism - CORRECT ANSWER when 2 or metals rub to conduct electric current"
"When do EFDA's renew their licenses? - CORRECT ANSWER On March 31st, biennually every
odd year"
"Dental Florosis or "Mottled Enamel" - CORRECT ANSWER when FL2 consumption exceeds
1ppm(part per milllion)"
"Enamel Hypoplasia - CORRECT ANSWER is developmental and is a mineralization defect"
"Desicating - CORRECT ANSWER over drying"
"Moral Turpitude - CORRECT ANSWER personal misconduct done knowingly contrary to
justice, honesty or good morals"
"Wetting agents/Carrying agents - CORRECT ANSWER help carry bonding agent to dental
tubules"
"Tacycardia - CORRECT ANSWER rapid heart beat, could be caused by retraction cord soaked
in epinephrine"
"Sealant is a liquid resin monomer (BIS_GMA) - CORRECT ANSWER "
"Sealants obliterate grooves, deep pits and fissures on occlusal surfaces - CORRECT ANSWER
"What stone is used for amalgam? - CORRECT ANSWER green stone"
"What stone is used for composites? - CORRECT ANSWER white stone"
"Etch is made of - CORRECT ANSWER Phosphoric Acid, 37% is placed on enamel and dentin"
"Stainless steel finishing strips - CORRECT ANSWER will remove flash from gingival and
interproximal areas"
"Guide Channels and the Diagonal Slot of a tofflemire should face - CORRECT ANSWER toward
the gingiva"
"Using a tofflemire retainer what is hard to achieve - CORRECT ANSWER interproximal
contacts"
“How many molars are present in the mandibular arch? - CORRECT ANSWER 6"
"The permanent mandibular second molar differs from the permanent mandibular first molar by
number of? - CORRECT ANSWER Cusps"
"Which is not found on the occlusal surface of a mandibular molar? - CORRECT ANSWER
Cingulum"
"A cusp of carabelli is located on a maxillary first molar of the? - CORRECT ANSWER
Mesiolingual cusp"
"The bulk of a tooth is made up of - CORRECT ANSWER Dentin"
"A wedge is used for what class of amalgam restoration? - CORRECT ANSWER class II"
"Where should you begin restoring a class II prep? - CORRECT ANSWER along the gingival
floor"
"walls of a class II cavity prep - CORRECT ANSWER mesial, distal, buccal, lingual, axial, gingival"
"The addition of which metal to the dental alloy will reduce gamma phase? - CORRECT
ANSWER Copper"
"When placing a tofflemire retainer you place the wedge from what surface? - CORRECT
ANSWER the lingual"
"The diagonal slot of the tofflemire should be placed toward the what for easy removal? -
CORRECT ANSWER the gingival"
"5 metals in amalgam - CORRECT ANSWER Silver,Copper, Mercury,Tin and Zinc"
"The best way to prevent overhang is? - CORRECT ANSWER proper band and wedge
placement"
"Marginal ridges should be carved ____ higher than the proximal teeth - CORRECT ANSWER
1mm"
"Copalite is an example of a what? - CORRECT ANSWER A Base"
"Glass Ionomers can be used as what? - CORRECT ANSWER a liner, base and a esthetic
restoration"
"Glass Ionomer releases what? - CORRECT ANSWER Fluoride"
