Download Dental Anatomy and Restorative Dentistry: A Comprehensive Review of Questions and Answers and more Exams Dentistry in PDF only on Docsity!
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
