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A comprehensive set of questions and answers for the pa efda board exam, covering topics such as tooth anatomy, dental procedures, and restorative materials. It is a valuable resource for students preparing for the exam, offering insights into common exam questions and their correct answers.
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How many molars are present in the mandibular arch? - ANSWER: 6 The permanent mandibular second molar differs from the permanent mandibular first molar by number of? - ANSWER: Cusps Which is not found on the occlusal surface of a mandibular molar? - ANSWER: Cingulum A cusp of carabelli is located on a maxillary first molar of the? - ANSWER: Mesiolingual cusp 3 round protuberances - ANSWER: Mamelons What is found on both posterior and anterior teeth? - ANSWER: Marginal ridges A ligual pit is most commonly found on what teeth #'s? - ANSWER: 7 and 10 What molar is likely to have 3 buccal cusps? - ANSWER: Mandibular first The label Mesiobucco-occlusal is appropriate for? - ANSWER: Point Angle of a posterior tooth
On a maxillary first premolar what is the groove that sperates the buccal and lingual cusps? - ANSWER: Central groove The molar with a Y,H, or U pattern - ANSWER: Mandibular second premolar A facial and lingual triangular ridge join to form? - ANSWER: Transverse ridge Cusps for a mandibular first molar - ANSWER: mesiolingual, mesiofacial, distolingual, distofacial, distal Major difference between first and second molars? - ANSWER: 1st molars has 5 cusps, 2nd molars have 4 cusps Which is true of oblique ridges? - ANSWER: Only Maxillary molars have Oblique ridges Facial surfaces of teeth include what? - ANSWER: Labial and Buccal surfaces Elevated crests of enamel that form mesial and distal margins of the occlusal surface - ANSWER: Marginal ridges The bulk of a tooth is made up of - ANSWER: Dentin Interproximal spaces between teeth - ANSWER: Gingival papillae
Working cusps - ANSWER: Lingual of upper; Buccal of lower Non-working cusps - ANSWER: Buccal of upper; Lingual of lower Walls of a molar - ANSWER: pulpal floor,buccal,distal,lingual,mesial Features of the occlusal surface of a permanent maxillary molar include.. - ANSWER: distomarginal ridge, mesiomarginal ridge, oblique ridge, distomarginal ridge, cusp of caribelli Structure that covers the anatomical crown of a tooth - ANSWER: Enamel The maxillary first premolar differs from the maxillary second premolar in that the maxillary first premolar has: - ANSWER: 2 roots, one buccal and one lingual The relationship between the working end of the instrument and the tooth surface - ANSWER: Adaptation Carious lesions are least likely to occur on - ANSWER: Cusp tips Instruments used to place amalgams/composite resins into preps - ANSWER: Compactors The radicular pulp continues with the tissues of the periapical area via the - ANSWER: Apical Foramen The part of the clamp that is expanded to fit over the tooth - ANSWER: Jaw
Strength and wear rates of a composite are critical to consider when selecting a material for placement of what class for stength - ANSWER: class I,II, and III The most versitile composite - ANSWER: Hybrid Prior to placement of a class II - ANSWER: Both a wedge and matrix band are needed Restoring a class II with too large an increment of composite at once can cause post-op sensitivity due to - ANSWER: Undercurring, shrinkage and improper condensing Everything should be dispensed according to what? - ANSWER: The Manufacturer's Instructions Curing lights should be tested weekly to - ANSWER: ensure that the bulb is intense enough to cure through the composite Total Etch - ANSWER: etching the enamel and all involved dentin of the prep During composite finishing procedure a green stone is used to - ANSWER: remove areas of excess composite when necessary Sequence for polishing composite - ANSWER: white stone, brown point, green point, white point, polishing paste Mechanical retention - ANSWER: between tooth and bonding agent
EFDAs are not permitted to.. - ANSWER: Do anything Final! Gingival retraction cord soaked in epinephrine can cause - ANSWER: Tachycardia acetone, alcohol and water - ANSWER: Carrying agents Bonding is never used as an - ANSWER: lubricant To prevent post-op sensitivity the EFDA should apply what as the first increment in a class II prep - ANSWER: flowable The sequence for finishing and polishing a composite - ANSWER: finishing bur, coarse, medium, fine discs, polishing paste Primer must be dispensed immediately to prevent - ANSWER: evaporation Coronal polishing - 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 - ANSWER: NOT NECESSARY Exogenous stains are caused by environmental sources and are classified in to subdivisions including: - ANSWER: Intrinsic and Extrinsic stains Which is an example of an endodgenous stain? - ANSWER: an excessive amount of fluoride during development of the tooth
What polishing paste is recommended for use on filled hybrid composite restoration? - ANSWER: Aluminum oxide An Oral Prophy includes - ANSWER: Removal of calculus and debris Extrinsic/Exogenous stain - ANSWER: A stain that may be removed from the surface of the teeth(food and drink) Intrinsic/Endogenous stain - ANSWER: A stain that cannot be removed for the surface of the teeth(smoking,tobacco,dental amalgam) Which is the most common technique for stain removal? - ANSWER: Rubber cup polishing What damage can result for using the prophy angle at a high speed? - ANSWER: it can cause frictional heat that can burn the gingiva and damage the tooth HEIGHT OF CONTOUR on the facial surface of a posterior tooth is - ANSWER: at the Cervical third Slow flow or movement of amalgam - ANSWER: Creep Carious lesions located on the proximal surfaces of molars and premolars - ANSWER: class II Carious lesions located on the proximal surfaces of central and lateral incisors - ANSWER: class III
The diagonal slot of the tofflemire should be placed toward the what for easy removal? - ANSWER: the gingival 5 metals in amalgam - ANSWER: Silver,Copper, Mercury,Tin and Zinc The best way to prevent overhang is? - ANSWER: proper band and wedge placement Marginal ridges should be carved higher than the proximal teeth - ANSWER: 1mm Copalite is an example of a what? - ANSWER: A Base Glass Ionomers can be used as what? - ANSWER: a liner, base and a esthetic restoration Glass Ionomer releases what? - ANSWER: Fluoride The closest wall to the pulp on a class V and the wall that runs along the axis of the pulp is called the? - ANSWER: the axial wall Calcium Hydroxide is no longer recommended as a liner under the entire restorative material because? - ANSWER: it has poor compressive strength Zinc Oxide Eugenol is indicate for what procedure? - ANSWER: sedative temporary restoration Walls of a class I - ANSWER: mesial, pulpal. distal, lingual, and facial
Bases and liners are placed on that walls - ANSWER: axial,pulpal walls The junction of the walls of a cavity prep with the external surface of the tooth is the? - ANSWER: Cavosurface A cavity prep that included the mesial incisal angle of a maxillary central incisor - ANSWER: class IV The weakest phase of amalgamation - ANSWER: Gamma Phase Properly mixed amalgam should - 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 - ANSWER: the occlusal surface If a spill of amalgam is undertriturated the result is - ANSWER: hard, crumbly, difficult to condense Glass Ionomer cement can be used in what procedure - ANSWER: post and core build up What can be used as a sedative dressing under a restoration - ANSWER: Zinc Oxide Eugenol The liner of choice to be placed with less than 1mm of tooth structure over the pulp
- ANSWER: Calcium Hydroxide
lingual pits of maxillary incisors Class II - ANSWER: posterior teeth with mesial or distal Class III - ANSWER: anterior teeth with mesial or distal Class IV - ANSWER: anterior teeth with an incisal Class V - ANSWER: gumline Class VI - ANSWER: always writen out Furcation - ANSWER: Area between the roots Fulcrum - ANSWER: Position that provides stability for the operator Parts of a tofflemire retainer - ANSWER: spindle, vice, guide slot in vice, head w/ outer guideslot, inner nut, outer nut Spindle - ANSWER: Threaded rod that moves through the entire retainer to secure or loosen the band in the vise Vice - ANSWER: A Box shapped device that has opening for the spindle to move in and out Guide Slot in vice - ANSWER: A recepticle for the side and ends of the matrix
Head with Outer Guide Slot - ANSWER: Holds the matrix for 3 seperate positions right, left, or straight Inner Nut - ANSWER: Controls postion of the vice to open or close the band and increases or decreases the circumfrence of the band loop Outer Nut - ANSWER: Tightens or looses the spindle against the matrix band in the vice Parts of an instrument - ANSWER: handle, shank, and working end Activation - ANSWER: Movement of the instrument Rubber Dam - ANSWER: eliminates saliva from the field of operation and allows the clinical crown to be exposed while retracting the lips and cheeks 6 advantages of the rubber dam - ANSWER: 1.dry, clean, visible field
Enamel restoration - ANSWER: between 1mm into dentin Near pulp exposure - ANSWER: less than 0.5mm from the pulp Mercury to alloy ratio - ANSWER: the greater % or mercury in amalgam the greater the expansion Trituration time - ANSWER: the longer mixing time, the less expansion Characteristics of amalgam - ANSWER: 1.size and shape of alloy particles
Enamel Hypoplasia - ANSWER: is developmental and is a mineralization defect Desicating - ANSWER: over drying Moral Turpitude - ANSWER: personal misconduct done knowingly contrary to justice, honesty or good morals Wetting agents/Carrying agents - ANSWER: help carry bonding agent to dental tubules Tacycardia - ANSWER: rapid heart beat, could be caused by retraction cord soaked in epinephrine Sealant is a liquid resin monomer (BIS_GMA) - ANSWER: Sealants obliterate grooves, deep pits and fissures on occlusal surfaces - ANSWER: What stone is used for amalgam? - ANSWER: green stone What stone is used for composites? - ANSWER: white stone Etch is made of - ANSWER: Phosphoric Acid, 37% is placed on enamel and dentin Stainless steel finishing strips - ANSWER: will remove flash from gingival and interproximal areas