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Dental Anatomy and Restorative Dentistry: A Comprehensive Review of Questions and Answers, Exams of Dentistry

A comprehensive collection of questions and answers related to dental anatomy and restorative dentistry. It covers a wide range of topics, including tooth morphology, occlusal surfaces, restorative materials, and clinical procedures. Valuable for students preparing for the efda board exam or for those seeking to enhance their understanding of dental concepts.

Typology: Exams

2024/2025

Available from 04/16/2025

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PA EFDA Board Exam Recent
Questions and Answers with Excellent
Rationale
Q: How many molars are present in the mandibular arch?
Ans: 6
Q: The permanent mandibular second molar differs from the permanent
mandibular first molar by number of?
Ans: Cusps
Q: Which is not found on the occlusal surface of a mandibular molar?
Ans: Cingulum
Q: A cusp of carabelli is located on a maxillary first molar of the?
Ans: Mesiolingual cusp
Q: 3 round protuberances
Ans: Mamelons
Q: What is found on both posterior and anterior teeth?
Ans: Marginal ridges
Q: A ligual pit is most commonly found on what teeth #'s?
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PA EFDA Board Exam Recent

Questions and Answers with Excellent

Rationale

Q: How many molars are present in the mandibular arch? Ans: 6 Q: The permanent mandibular second molar differs from the permanent mandibular first molar by number of? Ans: Cusps Q: Which is not found on the occlusal surface of a mandibular molar? Ans: Cingulum Q: A cusp of carabelli is located on a maxillary first molar of the? Ans: Mesiolingual cusp Q: 3 round protuberances Ans: Mamelons Q: What is found on both posterior and anterior teeth? Ans: Marginal ridges Q: A ligual pit is most commonly found on what teeth #'s?

Ans: 7 and 10 Q: What molar is likely to have 3 buccal cusps? Ans: Mandibular first Q: The label Mesiobucco-occlusal is appropriate for? Ans: Point Angle of a posterior tooth Q: On a maxillary first premolar what is the groove that sperates the buccal and lingual cusps? Ans: Central groove Q: The molar with a Y,H, or U pattern Ans: Mandibular second premolar Q: A facial and lingual triangular ridge join to form? Ans: Transverse ridge Q: Cusps for a mandibular first molar Ans: mesiolingual, mesiofacial, distolingual, distofacial, distal Q: Major difference between first and second molars? Ans: 1st molars has 5 cusps, 2nd molars have 4 cusps

Ans: Pit Q: V-shaped spaces between proximal surfaces of two adjoining teeth Ans: Embrasure Q: A cavity prep the includes the mesial incisal angle of a maxillary central incisor is a? Ans: Class IV Q: Overbite Ans: Vertical overlap of maxillary incisors Q: Centric occlusion Ans: Touching together of the upper and lower teeth when jaws are closed Q: Overjet Ans: Horizontal space between upper and lower incisors Q: Excursive movements Ans: Movement of jaw from left to right Q: Protrusive movements Ans: Thrusting lower jaw forward

Q: Crossbite Ans: Mandibular teeth are facial to their maxillary counterparts Q: Working cusps Ans: Lingual of upper; Buccal of lower Q: Non-working cusps Ans: Buccal of upper; Lingual of lower Q: Walls of a molar Ans: pulpal floor,buccal,distal,lingual,mesial Q: Features of the occlusal surface of a permanent maxillary molar include.. Ans: distomarginal ridge, mesiomarginal ridge, oblique ridge, distomarginal ridge, cusp of caribelli Q: Structure that covers the anatomical crown of a tooth Ans: Enamel Q: The maxillary first premolar differs from the maxillary second premolar in that the maxillary first premolar has: Ans: 2 roots, one buccal and one lingual

Q: Prior to placement of a class II Ans: Both a wedge and matrix band are needed Q: Restoring a class II with too large an increment of composite at once can cause post-op sensitivity due to Ans: Undercurring, shrinkage and improper condensing Q: Everything should be dispensed according to what? Ans: The Manufacturer's Instructions Q: Curing lights should be tested weekly to Ans: ensure that the bulb is intense enough to cure through the composite Q: Total Etch Ans: etching the enamel and all involved dentin of the prep Q: During composite finishing procedure a green stone is used to Ans: remove areas of excess composite when necessary Q: Sequence for polishing composite Ans: white stone, brown point, green point, white point, polishing paste Q: Mechanical retention

Ans: between tooth and bonding agent Q: Chemical retention Ans: between bonding agent and composite Q: Composites can be Ans: self cured, light cured and dual cured Q: Post-op sensitivity with posterior restorations can result from Ans: hyper occlusion, over etching and operative trauma Q: Which area of a class V amalgam is carved free hand Ans: the central portion Q: During a class II composite procedure the ring of a sectional matrix is placed Ans: after placing the wedge Q: Which situation would cause a composite restoration to fail? Ans: an internal void, moisture contamination, and improper light curing Q: When polishing composite its best to go from Ans: Course to Fine

Ans: flowable Q: The sequence for finishing and polishing a composite Ans: finishing bur, coarse, medium, fine discs, polishing paste Q: Primer must be dispensed immediately to prevent Ans: evaporation Q: Coronal polishing Ans: Removing plaque and stains from coronal surfaces of teeth Q: Polishing does NOT improve the uptake of professionally applied FL therefore polishing is _________ before FL2 application Ans: NOT NECESSARY Q: Exogenous stains are caused by environmental sources and are classified in to subdivisions including: Ans: Intrinsic and Extrinsic stains Q: Which is an example of an endodgenous stain? Ans: an excessive amount of fluoride during development of the tooth Q: What polishing paste is recommended for use on filled hybrid composite restoration?

Ans: Aluminum oxide Q: An Oral Prophy includes Ans: Removal of calculus and debris Q: Extrinsic/Exogenous stain Ans: A stain that may be removed from the surface of the teeth(food and drink) Q: Intrinsic/Endogenous stain Ans: A stain that cannot be removed for the surface of the teeth(smoking,tobacco,dental amalgam) Q: Which is the most common technique for stain removal? Ans: Rubber cup polishing Q: What damage can result for using the prophy angle at a high speed? Ans: it can cause frictional heat that can burn the gingiva and damage the tooth Q: HEIGHT OF CONTOUR on the facial surface of a posterior tooth is Ans: at the Cervical third Q: Slow flow or movement of amalgam Ans: Creep

Q: When placing a tofflemire retainer you place the wedge from what surface? Ans: the lingual Q: 2 metals in gammaphase Ans: Mercury and Tin Q: An auto matrix is used for what class restoration? Ans: class II Q: The walls for a class II prep included the axial wall and the gingival floor which Ans: is adjacent to the gingvial tissues Q: In a class II amalgam retentive grooves/points can be found in the _________ point angles Ans: axiogingivalproximal Q: The diagonal slot of the tofflemire should be placed toward the what for easy removal? Ans: the gingival Q: 5 metals in amalgam

Ans: Silver,Copper, Mercury,Tin and Zinc Q: The best way to prevent overhang is? Ans: proper band and wedge placement Q: Marginal ridges should be carved ____ higher than the proximal teeth Ans: 1mm Q: Copalite is an example of a what? Ans: A Base Q: Glass Ionomers can be used as what? Ans: a liner, base and a esthetic restoration Q: Glass Ionomer releases what? Ans: Fluoride Q: The closest wall to the pulp on a class V and the wall that runs along the axis of the pulp is called the? Ans: the axial wall Q: Calcium Hydroxide is no longer recommended as a liner under the entire restorative material because?

Ans: not appear dry or grainy, be slightly dull, and hold together without crumbling Q: The incisal wall of a class V prep of an incisor is termed the what wall of a class V prep of a molar Ans: the occlusal surface Q: If a spill of amalgam is undertriturated the result is Ans: hard, crumbly, difficult to condense Q: Glass Ionomer cement can be used in what procedure Ans: post and core build up Q: What can be used as a sedative dressing under a restoration Ans: Zinc Oxide Eugenol Q: The liner of choice to be placed with less than 1mm of tooth structure over the pulp Ans: Calcium Hydroxide Q: What base requires cavity vanish under it to protect the pulp? Ans: Zinc Phosphate Q: What material would NOT be the best choice for under a composite restoration?

Ans: Zinc Oxide Eugenol Q: In what direction should the polishing stroke move? Ans: from the gingival third toward the incisal/occlusal surface of the tooth Q: What % of sodium is in FL Ans: 5% Q: Systemic FL Ans: ingested by food, drink and FL2 supplements Q: Topical FL Ans: applied directly to the teeth Q: How much FL2 should be consumed Ans: 1 part per million Q: Anticariogenic means Ans: prevents caries Q: With FL2 gel and foam you may not eat or drink for how long? Ans: 30 minutes Q: FL2 does what to tooth surfaces?

Q: Fulcrum Ans: Position that provides stability for the operator Q: Parts of a tofflemire retainer Ans: spindle, vice, guide slot in vice, head w/ outer guideslot, inner nut, outer nut Q: Spindle Ans: Threaded rod that moves through the entire retainer to secure or loosen the band in the vise Q: Vice Ans: A Box shapped device that has opening for the spindle to move in and out Q: Guide Slot in vice Ans: A recepticle for the side and ends of the matrix Q: Head with Outer Guide Slot Ans: Holds the matrix for 3 seperate positions right, left, or straight Q: Inner Nut Ans: Controls postion of the vice to open or close the band and increases or decreases the circumfrence of the band loop Q: Outer Nut

Ans: Tightens or looses the spindle against the matrix band in the vice Q: Parts of an instrument Ans: handle, shank, and working end Q: Activation Ans: Movement of the instrument Q: Rubber Dam Ans: eliminates saliva from the field of operation and allows the clinical crown to be exposed while retracting the lips and cheeks Q: 6 advantages of the rubber dam Ans: 1.dry, clean, visible field 2.protection of patient and operator 3.economic factors 4.improved properties of dental materials 5.retraction of soft tissues 6.application of medications Q: Parts of a dental clamp Ans: jaw,forcep holes, points, and the bow Q: 2 types of rubber dam clamps Ans: wingless and wigned