Browse all practice questions for the Pennsylvania Expanded Function Dental Assistant (EFDA) Board Practice Exam. Search by topic, open any question and review its full explanation, then test yourself in the practice quiz.

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Let's Talk About Rubber Cup Polishing: The Go-To for Stain Removal in DentistryWhich technique is most commonly used for stain removal in dentistry?PA EFDA: when to report name or address changes to the state boardWhat is the timeframe for an EFDA to report changes in name or address to the state board?Understanding Adaptation: Key to Effective Dental Instrument UseWhat term describes the relationship between the working end of the instrument and the tooth surface?Understanding Class IV Cavity Preparations for Dental AssistantsA cavity preparation that includes the mesial incisal angle of a maxillary central incisor is classified as what type?Understanding Enamel Hypoplasia as a Developmental and Mineralization DefectEnamel Hypoplasia is described as what type of defect?Understanding enamel restorations when cavity prep is about 1 mm into dentinWhich type of dental restoration is typically performed when the cavity prep is between 1mm into dentin?Understanding Excursive Movements: Key to Jaw Function in DentistryExcursive movements refer to which type of jaw movement?Understanding Tachycardia Triggers During Dental ProceduresWhat could potentially cause Tachycardia during dental procedures?Understanding the Cusp of Carabelli and Its Role in Maxillary First Molar AnatomyA cusp of Carabelli is typically located on which cusp of a maxillary first molar?Understanding the Differences Between the Maxillary First and Second PremolarsWhat distinguishes the maxillary first premolar from the maxillary second premolar?Understanding the Furcation Area in Dental AnatomyWhat is the furcation area in dental terminology?Understanding the Impact of Gingival Retraction Cord Soaked in EpinephrineWhat effect can gingival retraction cord soaked in epinephrine have on a patient?Understanding the Importance of Marginal Ridges in Restorative DentistryHow much higher should marginal ridges be carved compared to proximal teeth?Understanding the Importance of the Gingival Floor in Class II PreparationsWhat component is adjacent to the gingival tissues in a Class II preparation?Understanding the line angle: a key landmark for identifying tooth surfacesWhich dental landmark serves as a guide for identifying tooth surfaces?Understanding the Role of Liners in Cavity PreparationWhat is the purpose of using a liner in a cavity preparation?Understanding the Role of Phosphoric Acid in Dental EtchingWhat concentration of phosphoric acid is typically used in acid etch technique?Understanding the Role of Solvents in Dental ProceduresWhat do acetone, alcohol, and water function as in dental procedures?Understanding the Unique Features of Permanent Maxillary MolarsWhich feature is not associated with the occlusal surface of a permanent maxillary molar?Understanding the Wedge in Class II Amalgam RestorationsWhich class of amalgam restoration utilizes a wedge?What truly differentiates dental composite materials? It’s particle size.What critical factor distinguishes different composite materials?Where to Begin with Class II Restoration: A Focus on the Gingival FloorWhere should the restoration of a class II prep begin?Why Staying Updated on Continuing Education is a Must for EFDAsWhy is it essential for EFDAs to stay updated on Continuing Education requirements?
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  • Which characteristic of amalgam is influenced by the manipulation of trituration and condensation?
  • Which stone is specifically used for dental amalgam?
  • What area is associated with Class I cavities?
  • What is most critical to ensure when curing composite materials?
  • Which material should be avoided in dental treatments for patients with severe allergies?
  • What impact do Continuing Education hours have on an EFDA's career?
  • How can EFDAs find Continuing Education opportunities?
  • What is required prior to the placement of a class II restoration?
  • What is the part of the dental clamp that expands to fit over the tooth?
  • Which component is used to adjust the tension of the matrix band?
  • Which class of cavity involves anterior teeth with a mesial or distal location?
  • Which molar is likely to have three buccal cusps?
  • Which part of a tooth provides a protective cover?
  • Which condition is considered a contraindication for dental sealants?
  • When using a tofflemire retainer, which direction should the guide channels face?
  • Which metal in amalgam helps to enhance strength and resistance to corrosion?
  • Which term describes a pinpoint depression where two or more grooves meet?
  • Which component of amalgam acts as a liquid binder?
  • Which of the following is a common property of dental bases?
  • Which surface is typically the first to be restored in a class II prep?
  • Which of the following options describes a component of a dental clamp?
  • What are the walls of a class II cavity prep?
  • Which term describes the small triangular area of tissue between adjacent teeth?
  • Which of the following is a benefit of attending EFDA Continuing Education courses?
  • Which of the following conditions would not be advised for sealant application?
  • What should be included in areas of accepted continuing education for dental assistants?
  • What is a primary advantage of a rubber dam regarding the field of operation?
  • What is often hard to achieve when using a tofflemire retainer?
  • In addition to Continuing Education, what else is required for EFDA recertification?
  • Which material is NOT ideal for placement under a composite restoration?
  • How does systemic FL2 enter the body?
  • What does 'protrusive movements' describe?
  • How many molars are present in the mandibular arch?
  • The spindle in a tofflemire retainer primarily moves through what part?
  • Which aspect of tooth anatomy is crucial for maintaining proper appeal and health in posterior teeth?
  • When is a Class II cavity preparation typically indicated?
  • What is the most common location for a pit on the occlusal surface of a mandibular molar?
  • During a class II composite procedure, when should the sectional matrix ring be placed?
  • When do EFDAs renew their licenses?
  • Which condition may arise from excessive fluoride consumption?
  • Which type of ridges are only found on maxillary molars?
  • What are the two types of rubber dam clamps?
  • Which of the following is an accepted area of continuing education for dental assistants?
  • Which advantage of the rubber dam involves the protection of individuals during dental procedures?
  • What teeth are most likely to have the feature of mamelons upon eruption?
  • Why must primer be dispensed immediately during procedures?
  • Which part of a tofflemire retainer is shaped like a box and facilitates the spindle's movement?
  • What is the bulk of a tooth primarily made up of?
  • What polishing paste is generally recommended for use on filled hybrid composite restorations?
  • During the composite finishing procedure, what is the purpose of a green stone?
  • What structure covers the anatomical crown of a tooth?
  • Which technique is essential for maintaining patient safety during a dental procedure?
  • In a Class V preparation, what is the term for the incisal wall of an incisor?
  • Which of the following metals is NOT a component of dental amalgam?
  • When placing a tofflemire retainer, the wedge is placed from which surface?
  • What is a common effect of polishing on dental materials?
  • Carious lesions located on the proximal surfaces of central and lateral incisors are classified as which type?
  • Which aspect of a cavity prep includes the axial and gingival walls?
  • What is the primary component of etching solution used in dentistry?
  • Which type of insulator is noted for its ability to insulate the pulp from thermal irritation?
  • What is the primary composition of a dental sealant?
  • Where are mesial and distal marginal ridges located?
  • Which two metals are found in the gamma phase?
  • What is the primary purpose of using calcium hydroxide in dental procedures?
  • Which cusps are classified as working cusps in the dental anatomy?
  • What is a characteristic of intrinsic stains?
  • Which type of teeth typically show oblique ridges?
  • If a spill of amalgam is undertriturated, what is the resulting characteristic?
  • What are the walls of a molar classified as?
  • What is the correct sequence for finishing and polishing a composite restoration?
  • What connects the occlusal surfaces of posterior teeth?
  • What is the benefit of the three separate positions held by the head of a tofflemire retainer?
  • What is the purpose of cavity varnishes in dentistry?
  • Copalite is primarily used as what type of dental material?
  • Which term describes the horizontal space between the upper and lower incisors?
  • Which of the following practices is essential in preventing periodontal disease during an oral prophy?
  • Which of the following is NOT a characteristic of amalgam?
  • Why is it important for EFDAs to understand the concept of Moral Turpitude?
  • In dental procedures, bonding agents should never be utilized as which of the following?
  • Which characteristic of soft tissues can a rubber dam help to achieve?
  • What is the role of a wedge in a class II amalgam restoration?
  • What can cause post-operative sensitivity when restoring a class II with too large an increment of composite?
  • What does the term 'overbite' refer to in dental practice?
  • Which of the following cusps are present on a mandibular first molar?
  • What is the major difference between first and second molars?
  • What is an essential consideration for EFDAs in patient care procedures?
  • What function does the inner nut serve in a tofflemire retainer?
  • Which effect does fluoride (FL2) have on tooth surfaces?
  • What feature is found on both posterior and anterior teeth?
  • What is the best practice to avoid amalgam overhangs?
  • Which of these is a classifications of exogenous stains?
  • Centric occlusion refers to what dental condition?
  • How does the mercury to alloy ratio in amalgam affect its expansion?
  • What base requires cavity varnish underneath it for pulp protection?
  • Which procedure includes an over-etching consequence that might lead to post-operative issues?
  • What characteristic does an effective dental liner exhibit?
  • How are Class III cavities described in terms of their location?
  • Which part of the tofflemire retainer holds the matrix and allows for multiple positioning?
  • When are EFDA Continuing Education hours due?
  • In a Class II amalgam, where are retentive grooves typically located?
  • A crossbite occurs when which of the following is true?
  • What percentage of sodium is found in FL2?
  • Which of these could potentially cause an internal void in a composite restoration?
  • What should properly mixed amalgam not appear as?
  • How does the radicular pulp connect with the tissues of the periapical area?
  • What is an important characteristic of the gingival floor in a Class II preparation?
  • What is the primary purpose of a rubber dam in dental procedures?
  • What does the guide slot in the vice help to accommodate?
  • Which of the following best describes a class III cavity preparation?
  • What type of composite is considered the most versatile?
  • For easy removal, the diagonal slot of the Tofflemire should be directed towards which area?
  • What is the primary function of marginal ridges?
  • Where is the height of contour located on the facial surface of a posterior tooth?
  • What are the v-shaped spaces between the proximal surfaces of two adjoining teeth called?
  • Glass ionomers can serve multiple purposes. Which of the following is NOT one of their uses?
  • What forms when a facial and lingual triangular ridge join?
  • When polishing composite restorations, what is the recommended progression of abrasives?
  • What does Class IV refer to in cavity classification?
  • Reinforcers are used in dental procedures primarily to:
  • What is the primary role of a dental assistant in the context of patient care?
  • What is considered the weakest phase of amalgamation?
  • What is a common format for EFDA Continuing Education courses?
  • EFDAs are not permitted to perform which of the following tasks?
  • In dentistry, bases and liners serve multiple purposes; which is NOT one of their uses?
  • Which surface of the tooth is primarily concerned with aesthetics?
  • What is the term for the junction of the walls of a cavity preparation with the external surface of the tooth?
  • What occupies the interproximal spaces between teeth?
  • What is the role of the vice in a tofflemire retainer?
  • What is the goal of coronal polishing in dentistry?
  • Which category of education is required for EFDA continuing education?
  • What class of dental restoration is indicated for carious lesions located on the proximal surfaces of molars and premolars?
  • When restoring a tooth, the strength and wear rates of a composite are critical for which classes?
  • Why is Calcium Hydroxide no longer recommended as a liner under the entire restorative material?
  • What is the main purpose of dental sealants?
  • What part of a tofflemire retainer helps to control the position of the band loop?
  • What is the primary purpose of Continuing Education hours for EFDA?
  • What does centric occlusion imply about the position of the teeth?
  • A dental pit is best described as?
  • What constitutes 'Moral Turpitude' in the context of dental ethics?
  • What type of restoration requires careful consideration of thermal and mechanical properties of materials used?
  • Why is polishing considered unnecessary before applying professionally applied fluorides?
  • Which of the following materials is NOT classified as an insulator in dentistry?
  • What are the walls of a Class I cavity preparation?
  • What is the common function of compactor instruments in dentistry?
  • What does the term "anticariogenic" refer to?
  • What is a direct pulp cap's function in dentistry?
  • What is known to be a result of over drying in dental treatments?
  • Which of the following factors could lead to moisture contamination during a restoration?
  • On a maxillary first premolar, which groove separates the buccal and lingual cusps?
  • Where are Class V cavities typically found?
  • Which of the following topics would likely NOT be a focus in EFDA Continuing Education?
  • Which agent is primarily used to improve retention in dental bonding?
  • Which instruments are typically used to place amalgams or composite resins into preps?
  • What is the primary role of the matrix band in dental procedures?
  • What is the primary function of dental sealants?
  • The effective use of which material can help achieve proper enamel adhesion?
  • What are the elevated crests of enamel that form mesial and distal margins of the occlusal surface called?
  • What is the primary function of a fulcrum in a dental procedure?
  • Class II cavities occur in which part of the teeth?
  • What is the purpose of stainless steel finishing strips in dental procedures?
  • What does the greater percentage of mercury in an amalgam indicate?
  • What type of stone is used in composite dental work?
  • What type of stains cannot be removed from the surface of the teeth?
  • What is the bond relationship between the bonding agent and composite materials called?
  • To prevent post-operative sensitivity in Class II preparations, which material should be applied as the first increment?
  • What would be considered a violation of EFDA Continuing Education requirements?
  • Dispensing of dental materials should be done according to what?
  • The permanent mandibular second molar differs from the permanent mandibular first molar by what characteristic?
  • In what direction should the polishing stroke be applied?
  • When using a matrix band, which is crucial for proper adaptation during placement?
  • What can be inferred about Class VI cavities?
  • What is the correct sequence for polishing composite?
  • What does the outer nut do in relation to the spindle?
  • Which of the following describes the curing methods available for composites?
  • Why should curing lights be tested weekly?
  • Which structure is not found on the occlusal surface of a mandibular molar?
  • In dental procedures, what role do economic factors play when using a rubber dam?
  • What properties do obtundents possess in relation to dental pulp?
  • What should EFDAs keep as proof of completed Continuing Education?
  • What material can be used as a sedative dressing under a restoration?
  • What defines galvanism in dentistry?
  • When assessing dental cavity depth, what range signifies a minimal depth restoration?
  • What is the purpose of using isolation systems during certain dental procedures?
  • Which component of a tofflemire retainer is responsible for securing or loosening the band?
  • What does direct supervision require of the dentist during a treatment procedure?
  • In a class V amalgam restoration, which part is typically carved freehand?
  • After applying FL2 gel or foam, how long should a patient refrain from eating or drinking?
  • Which cusps are classified as non-working cusps in dental anatomy?
  • What structure separates the distal triangular fossa of the maxillary first molar from the central fossa?
  • Which of the following can contribute to post-operative sensitivity in posterior restorations?
  • The label Mesiobucco-occlusal is most appropriate for which relation?
  • What does the term 'Desicating' refer to in dental terminology?
  • What type of retention occurs between the tooth and bonding agent?
  • What are wetting agents used for in dental procedures?
  • What metal, when added to dental alloy, reduces the gamma phase?
  • What procedures are EFDAs prohibited from performing?
  • On which walls are bases and liners typically placed?
  • What does total etch involve?
  • What procedure can Glass Ionomer cement be used for?
  • Which type of stains are often caused by food and drink?
  • Which molar has a Y, H, or U pattern?
  • What function does the base serve in a dental restoration?
  • Which of the following is a common reason for the failure of a composite restoration?
  • What is the effect of longer trituration time on amalgam expansion?
  • Which of the following best describes the effect of sealants on occlusal surfaces?
  • What does Class VI refer to in dental terms?
  • Which anatomical feature is a prominent characteristic of maxillary molars?
  • What does an oral prophylaxis commonly involve?
  • What is the minimal depth required for a restoration according to standard dental procedures?
  • Which class of cavity involves involvement with the incisal surfaces of anterior teeth?
  • What happens when metals rub together in dental materials?
  • Which class of restoration is primarily concerned with the proximal surfaces of posterior teeth?
  • What type of ridge is found on a maxillary molar's occlusal surface?
  • What is the primary function of embrasures in dental anatomy?
  • Which documentation is essential for an EFDA's Continuing Education audit?
  • What is the purpose of using a wedge during a class II composite procedure?
  • How much FL2 should be consumed for effective dental health?
  • A cavity preparation that includes the mesial incisal angle of a maxillary central incisor is classified as what type?
  • What area does Class I in dentistry refer to?
  • What is not an accepted area of continuing education in dental assisting?
  • What beneficial ion is released by glass ionomer materials?
  • A lingual pit is most commonly found on which teeth numbers?
  • What is the primary purpose of the anatomical crown covering?
  • An auto matrix is typically used for which class of restoration?
  • How many hours of Continuing Education do Expanded Function Dental Assistants (EFDAs) need to complete?
  • What damage can occur from using the prophy angle at a high speed?
  • Cavosurface margins should be checked with what instrument?
  • How do liners function as obtundents during dental treatment?
  • Which parts typically make up an instrument in dental practice?
  • How often must an EFDA renew their Continuing Education requirements?
  • What phenomenon is described as the slow flow or movement of amalgam?
  • What does Tachycardia refer to in medical terms?
  • What dental feature is most commonly associated with the maxillary first molar?
  • Where are carious lesions least likely to occur?
  • What is Zinc Oxide Eugenol primarily indicated for?
  • In a Class V preparation, what is the wall closest to the pulp known as?
  • What do the facial surfaces of teeth include?
  • What liner is preferred when less than 1mm of tooth structure remains over the pulp?
  • Which characteristic distinguishes a buccal cusp from a lingual cusp?
  • Which dental material is commonly used for base and liner applications?
  • Which type of stain can be removed from the surface of the teeth?
  • What dental feature is defined by three round protuberances on the incisal edge of newly erupted anterior teeth?
  • When restoring a class III cavity, the isolation required is usually:
  • What does the activation of an instrument refer to in dental procedures?
  • What describes topical FL2?
  • Which of the following is an example of an endogenous stain?
  • What role does fluoride play in dental health?
  • Calcium hydroxide can be used as an indirect pulp cap in which situation?
  • What is Dental Fluorosis commonly referred to as?
  • What is the minimum number of Continuing Education hours needed for EFDA certification?
  • At what depth is a near pulp exposure defined?
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