EFDA BOARD EXAM NEWEST ACTUAL EXAM QUESTIONS AND DETAILED CORRECT ANSWERS | 100% CORRECT, Exams of Nursing

Download EFDA BOARD EXAM NEWEST ACTUAL EXAM QUESTIONS AND DETAILED CORRECT ANSWERS | 100% CORRECT and more Exams Nursing in PDF only on Docsity! EFDA BOARD EXAM NEWEST ACTUAL EXAM QUESTIONS AND DETAILED CORRECT ANSWERS | 100% CORRECT ANSWERS A+ GRADE STUDYGUIDE 2025 What does the term synersis mean as it relates to alginate impressions? Correct Answer the evaporation of water from alginate What is not an instrument used for finishing and polishing amalgam restorations: brownie points, green stone, carver, prophy cup Correct Answer carver When would a light gauge, vacuum-formed resin material be used? Correct Answer bleach tray or provisional coverage what type of stain, found on some children's teeth, can be caused by poor hygiene and the fungi are retained in bacterial plaque? Correct Answer green stain what is the Theory of Selective polishing? Correct Answer only polish the teeth that have staining or need it, not all of the teeth what is not something you evaluate before polishing an amalgam? Fractures, overhangs, restoration age, decay Correct Answer restoration age what the solution for topical anesthetic is compared to that of a local anesthetic, the concentration in a topical solution is Correct Answer greater than local Which type of impression material should be used to acquire an impression with low tear resistance and high dimensional stability on tooth #18? hydrocolloid, polyether, polysiloxane, polysulfide Correct Answer polysiloxane topical anesthetic comes in which forms? Correct Answer liquid, gel, spray, and patch a cingulum pit cavity preparation on tooth #10 is considered which classification? Correct Answer class I the permanent tooth that has an H-shaped groove pattern on its occlusal surface is the Correct Answer mandibular second molar why is a sedative base placed in a tooth prior to placing a restoration Correct Answer soothes an irritated or damages pulp when the pulp is stimulated by vibrations from a handpiece, this is referred to as what type of stimulus? Correct Answer mechanical which of the following is a source of gingival and periodontal infections? oral mucosa, tooth decay, calculus, planktonics Correct Answer calculus what type of isolation technique provides a decreased amount of contaminated aerosol exposure to the operator? Correct Answer saliva ejector or HVE what is the outer knob used for Correct Answer used to tighten or loosen the spindle within the diagonal slot. hold matrix band securely in the retainer the function of the wedge in a matrix system is Correct Answer separate the teeth and prevent overhangs the smaller circumference of a tofflemire matrix band is placed Correct Answer toward the gingiva when should impression for a provisional be taken? Correct Answer before the dentists prepares the tooth what is used to remove excess polishing agent interproximally? Correct Answer dental floss what is used to control the speed of the handpiece? Correct Answer rheostat what is used to remove stain from deep pits and fissures Correct Answer bristle brush coronal polishing is limited to what portion of the tooth? Correct Answer clinical crown what is the clinical crown? Correct Answer the portion of the tooth visible in the mouth what in ZOE is soothing to a tooth Correct Answer eugenol cavity liner is used to Correct Answer protect the pulp Angle Class I Correct Answer nutroocclusion Angle Class II Division I Correct Answer overjet with anterior teeth protruded Angle class II division 2 Correct Answer is associated with lingually displaced maxillary teeth and excessive labial inclination of the maxillary central incisors angles class III Correct Answer mesioocclusion or underbite when taking alginate impressions, if you want to reduce the amount of bubbles, what can you do? Correct Answer mix thoroughly against the rubber bowl what property does copper give in an amalgam filling? Correct Answer corrosion ability Difference between ditching and flashing? Correct Answer ditching- deficient amalgam flashing- excess amalgam methylmethacylate materials have high _____during _______ Correct Answer shrinkage, polymerization what direction do you move your instrument to remove excess cement? Correct Answer horizonal what is the device used to test curing lights output? Correct Answer radiometer how is polycarboxylate powder mixed into liquid? Correct Answer all at the same time and mixed completely what is the mixing time for polycarboxylate Correct Answer 30 seconds zinc phosphate type I Correct Answer permanent cement, fine grain zinc phosphate type II Correct Answer medium grain - recommended for an insulating base for a deep cavity prep - mix on a cool glass slab because of the exothermic reaction what dental dam clamp is used for a class V anterior restoration? Correct Answer double-bowed cervical clamp what ingredient in ZOE makes it necessary to mix on an oil resistant paper pad? Correct Answer eugenol composite resins that are light-cured and polished to a high gloss are Correct Answer microfilled what is the difference between coronal polishing and scaling? Correct Answer coronal removes stains and scaling removes calculus under tissue what is a wear facet? Correct Answer a wear mark on the tooth what does the operator use to pack the first of amalgam? Correct Answer small end of the condenser what hand piece is used to make an adjustment to a temp crown? Correct Answer slow speed criteria of selection of restorations to be polished Correct Answer no fractures to restoration, proximal contact precent in class II restoration, anatomy can be maintained or improved, margins can be contoured to be flush, occlusal can be maintained or improved what type of base is placed in a cavity preparation to protect from thermal shock? Correct Answer insulating how close to the gingival margin is the material trimmed to avoid irritation? Correct Answer 0.5 mm what can be caused if the margin of material is overextended? Correct Answer gingival recession or irritation During coronal polishing, what is the mirror used for? Correct Answer indirect vision, wiping motion, lip, tongue and cheek retraction what provisional material generates heat during polymerization and may traumatize the pulp or soft tissues? Correct Answer chemical-cured acrylic to dissipate the heat from zinc phosphate while mixing, what should you do? Correct Answer spatulate over a wide area on a cool glass slab how does a rubber dam aid in infection control and isolation Correct Answer by providing a physical barrier and reducing salivary contamination what type of ZOE has reinforcing agents that have been added for strength Correct Answer type II Glass ionomer type I Correct Answer cementation of metal restoration glass ionomer type II Correct Answer designed for restoring areas of erosion in Class V. glass ionomer class III Correct Answer liner and dentin bonding what type of impression material is best because of its dimensional stability? Correct Answer polysiloxane what are the two components of an elastomeric impression material? Correct Answer base and catalyst water evaporating from materials is called what? Correct Answer synersis what is the most common irreversible hydrocolloid? Correct Answer alginate three classifications of impressions taken during dental procedures Correct Answer preliminary, final and bite registration what is a polodent type matrix band? Correct Answer small, oval shaped stainless steel matrix what is the purpose of a dental dam? Correct Answer to provide moisture control for the placement of restorative materials what is the internal screw-like pin that fits into the diagonal slot to hold the end of a matrix band called? Correct Answer spindle another name for a tofflemire? Correct Answer universal retainer What is hystersis? Correct Answer change in temperature that causes the reversible hydrocolloid material to transform from one physical state to another What agent is used in topical anesthetic? Correct Answer Benzocaine How long should topical anesthetic be placed for more profound soft tissue analgesia? Correct Answer 60 to 90 seconds Dry angles are an effective way to control saliva secretions from Correct Answer stensen's duct what type of ZOE lacks strength and long-term durability? Correct Answer type I (temporary cement) This type of cement is a hybrid of silicate and polycarboxilate cement Correct Answer glass ionomer what material is supplied as a paste/paste system and also in cartridges? Correct Answer polyether What does the term elastomeric mean? Correct Answer having elastic or rubber-like qualities an alginate absorbing excess water is termed what? Correct Answer imbibition what is a final impression used for? Correct Answer an accurate reproduction of teeth and surrounding tissue what is the negative reproduction of dental arches and surrounding tissues? Correct Answer impression at what point in a procedure is a mylar matrix placed? Correct Answer before etching the retainer (toffelmire) is positioned from what surface? Correct Answer buccal Where is the wedge inserted to position the matrix band firmly against the gingival margin? Correct Answer lingual embrasure what instruments are used to contour a matrix band? Correct Answer burnisher or mirror handle a matrix band is made of what? Correct Answer thin flexible steel what stabilizes the tofflemire matrix band? Correct Answer wooden wedge what type of stain can chlorhexidine cause? Correct Answer extrinsic most common type of temporary coverage for crown and bridge? Correct Answer custom provisional why only intermittent pressure of a tooth when polishing? Correct Answer heat dissipates between strokes Course, extra course, medium, fine and extrafine are different _____ of polishing paste? Correct Answer grit removal of calculus, debris, stain, and plaque from teeth Correct Answer oral prophylaxis where on the tooth do you begin to use prophy cup? Correct Answer gingival third what is the different between catalyst and a base? Correct Answer Base- basic ingredient of material catalyst- increases the rate of chemical reaction (makes it set) Would you use a polymer crown on an anterior tooth? why? Correct Answer yes, because its tooth colored What is a class I cavity Correct Answer decay in pits and fissures of occlusal surface What is a class II cavity Correct Answer decay on proximal (mesial or distal) surfaces of premolars and molars What is a class III cavity? Correct Answer decay in proximal surfaces (Mesial or distal) of incisors and canines What is a class IV cavity? Correct Answer decay in proximal surfaces (mesial or distal) of incisors and canines and involves the incisal edge or angle of tooth Commissures Correct Answer corners of the lips mylohyoid ridge Correct Answer bony ridge on the lingual surface of the mandible mental foramen of mandible Correct Answer one of two holes located on the anterior surface of the mandible. It permits passage of the mental nerve and vessels. hamular notch Correct Answer The palpable notch formed by the junction of the maxillary tuberosity and the pterygoid hamulus of the sphenoid bone. Also called the pterygomaxillary notch. linea alba Correct Answer white line on the cheek True or false: a dental lathe is used to adjust restorations in the mouth? Correct Answer false a film of sulfides on an amalgam restoration is Correct Answer tarnish a tooth that exhibits pain and sensitivity during mastication is a symptom of what Correct Answer premature occlusion after placing an amalgam, the surface is somewhat rough. what can this result in? Correct Answer plaque being caught in restoration potentially causing decay alginate impressions must be poured within ____ so that distortion does not occur Correct Answer 1 hour besides hardness, size and shape of abrasive agents, what other factors must be considered when polishing amalgams? Correct Answer concentration of abrasive agent true or false: centric relation is a measure measurement of where the teeth are positioned when the joints are aligned correctly and in contact? Correct Answer false finishing a restoration involves contouring, removal of marginal discrepancies, _____ the anatomy and _____ the amalgam surface Correct Answer defining, smoothing having a poor contact which increases the potential of food impaction is a _____ proximal area Correct Answer under contoured heat during polishing of an amalgam restoration cause two things. Pupal damage and what? Correct Answer Bringing mercury from restoration to the surface, causing tarnish How can the length or depth of the alginate impression tray borders be extended? Correct Answer utility wax If a restoration does not produce the original contours of the tooth, the restoration may need what? Correct Answer more recontouring or be replaced True or False: Rubber dam is the only way to isolate a tooth that needs to be polished? Correct Answer false The time from induction of an anesthetic to its complete reversal is its... Correct Answer duration there are two commonly used polishing agents used when polishing amalgams. one is pumice, the other is _____ Correct Answer tin oxide to avoid injury, the rubber polishing cup is directed _____ from the gingival third and pressed _____ against the tooth surface Correct Answer away, lightly True or False: topical anesthetic has a higher potential for overdose reaction due to being prepared in a higher concentration Correct Answer true which impression technique requires that the patient practice normally opening and closing the mouth prior to the impression? Correct Answer bite registration which level of environmental protection agency registered surface disinfectant is generally suitable for disinfection of impression materials? Correct Answer intermediate level what is the best way to position the maxillary impression tray for a patient that has a gagging tendency? Correct Answer seat maxillary tray from posterior to anterior A matrix must be used to create a temporary wall for which of the following classifications of tooth restoration? Correct Answer II, III and IV know why a wedge is used and where they are placed? Correct Answer Inserted into the lingual embrasure to hold the matrix band firmly against the gingival margin of the preparation. what is the exact spot where adjacent teeth actually touch each other? Correct Answer contact point Which permanent molar is usually the first tooth to erupt and is known as the keystone of the dental arch? Correct Answer maxillary first molar what makes patient education most effective? Correct Answer when it is reinforced and repeated what is an alloy? Correct Answer a mixture of two metals something with a high viscosity flows Correct Answer not easily what is polymerization? Correct Answer the process by which the resin material is changed from a pliable state into a hardened restoration. what is galvanic reaction? Correct Answer an electrical current that takes place when two different or dissimilar metals come together What is the bow on a dental dam clamp Correct Answer rounded portion of the clamp that extends through the dam what is the wing part on a clamp? Correct Answer designed on clamps with extra extension to help retain the dam what is the prong on the clamp? Correct Answer four points on the clamp that must be seated firmly on tooth to stabilize clamp what is the hole in the dental dam clamp? Correct Answer used to place dental dam forceps into in order to stretch the clamp over the tooth and remove clamp when finished what is the jaw on the dental dam clamp? Correct Answer encircle the tooth and are shaped into four prongs what sizes are dental dams? Correct Answer 5x5 and 6x6 what is a thin dental dam used for? Correct Answer endodontic procedures what a a medium thickness dental dam used for Correct Answer operative procedures what is a heavy thickness dam used for? Correct Answer when tissue retraction and extra resistance to tearing is needed how far apart are the holes in the dental dam punched from one another Correct Answer 3.0 to 3.5 mm