Oregon Expanded Function Dental Assistant (EFDA) Practice Exam

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A contoured Tofflemire matrix is designed to fit proximal areas of the teethWhat is a key feature of a contoured tofflemire matrix?Cold Water and Alginate Impression Material: What's the Connection?What is the effect of cold water on alginate impression material?Common materials used for occlusal and bite registrations in dentistryWhich of the following is NOT a type of occlusal and bite registration material?Enhancing Your Smile: The Importance of Removing Stains from Coronal SurfacesWhy is it important to remove stains from the coronal surfaces of teeth?Exploring the Varieties of Prophy Paste in Dental CareProphy paste can be found in which of the following forms?How Adhesive Secures Impression Material in Non-Perforated TraysWhat is applied to a tray that is not perforated to ensure the impression material holds in place?How to Comfortably Treat Hypersensitive Teeth During Dental CleaningsWhat technique should be used for hypersensitive teeth when performing a prophy?Understanding Dental Fluorosis and Its CausesDental fluorosis is a result of:Understanding extrinsic stains: surface discoloration from food, tobacco, and drinksWhat type of stains are primarily caused by food, tobacco, and drinks?Understanding How Air Exposure Impacts Alginate Material in Dental ImpressionsHow does exposure to air affect the alginate material?Understanding micro-mechanical retention: how restorations grip the toothWhat is meant by micro-mechanical retention?Understanding the Best Timing for Tooth Polishing in Dental ProceduresDuring what part of the procedure should the tooth polishing begin?Understanding the Characteristics of Biting Registration Materials in DentistryWhat is a characteristic of biting registration materials like wax?Understanding the Different Sizes of Holes on a Dental DamWhat is typically the smallest hole used on the dental dam?Understanding the First Step in Preventive Dental CareWhat is typically the first step in preventive dental care?Understanding the Importance of Alginate in DentistryWhat is the primary purpose of alginate in dentistry?Understanding the Importance of Dental Primers in Dental ProceduresWhich characteristic is associated with a dental primer?Understanding the Importance of Proper Tray Seating in Dental ImpressionsWhich of the following statements is true regarding impression tray seating?Understanding the Key Features of Resin Temporary CementsWhat is a defining feature of resin temporary cements?Understanding the Most Common Teeth Polishing MethodWhat is the most common method used for polishing teeth?Understanding the Purpose of Varnish in Dental PracticeVarnish in a dental context is used for what purpose?Understanding the Retromolar Area and Its Importance in Dental PracticeWhat is indicated by the term "retromolar"?Understanding the Role of a Protective Base in Dental TreatmentWhat does a protective base do in dental treatment?Understanding the Role of Air Polishing in Dental HygieneWhat is the primary function of the air polishing method in dental hygiene?Understanding the Role of Coronal Polishing Before Sealant ApplicationWhat is the most common procedure used before applying sealants?Understanding the Role of Insulating Bases in Dental ProceduresWhat is the primary purpose of an insulating base in dental procedures?Understanding the Role of Peroxide in the Brush-On Whitening MethodWhat product is generally painted on the facial surfaces of teeth in a brush-on whitening method?Understanding the Role of the Dental Dam Punch in DentistryWhat is the function of the dental dam punch?Understanding the Role of the Stylus in Dental Dam ProceduresWhat is the purpose of the stylus in dental dam procedures?Understanding the typical setting time for alginate impression material in dentistryWhat is the normal setting time for alginate impression material?Understanding when to use Zinc phosphate Type 2In which scenario would you use Zinc phosphate Type 2?Understanding which dental dam hole punch fits maxillary anterior teeth for EFDA proceduresWhich hole punch is used for maxillary anteriors on the dental dam stylus?What a crown matrix former does and why it matters in dental crown fabricationWhat does a crown matrix former do?What You Need to Know About Adhesive for Silicone ImpressionsWhat type of adhesive is specifically used with silicone impressions?What You Need to Know About Amalgamation in Dental MaterialsWhat is amalgamation in the context of dental materials?
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  • Which three functions can dental bases perform for a tooth?
  • What is the primary function of an auto matrix in dental procedures?
  • Which material is a common choice for final impressions due to its ability to capture details?
  • What property of zinc-oxide-eugenol makes it unsuitable for use under glass ionomer and composite?
  • Endogenous stains are characterized by:
  • How soon after taking an impression should it be poured up to prevent distortion?
  • During the removal of a dental dam, why is it important to floss out extra pieces?
  • When would it be necessary to use adhesive in an impression tray?
  • Subgingival calculus is typically characterized by:
  • What does plaque primarily consist of?
  • What characterizes regular and heavy body impression material?
  • What does the clinical crown refer to in dentistry?
  • What causes metallic stains on teeth?
  • Which type of dental clamp is used specifically for stabilizing anterior teeth?
  • Which material is primarily used as a base or liner to encourage secondary dentin production?
  • What is the function of the outer knob on a tofflemire?
  • What is the primary function of a wedge in dental procedures?
  • What is a characteristic of the stainless steel u-shaped dental dam frame?
  • What does the spindle on a tofflemire resemble?
  • What is a key feature of a custom provisional crown?
  • What is a primary benefit of using a sedative base?
  • What effect does firmer pressure have when using abrasives during polishing?
  • The term "cleaning" when used in dentistry often references:
  • What is the term for wrapping an impression in a wet paper towel immediately after taking it?
  • What is the typical duration of an in-office tooth whitening treatment?
  • When is the dental dam clamp typically removed?
  • What type of clamps are characterized as double bowed?
  • For which type of teeth is a sectional tray typically used?
  • What makes glass ionomer a suitable choice for dental restorations?
  • Which tray is designed to cover the entire dental arch?
  • What is the purpose of using a wedge in conjunction with a tofflemire?
  • In which type of procedure might a plastic u-shaped dental dam frame be preferred?
  • Why is it important to floss after polishing?
  • Glass ionomer Type 4 is primarily used for what purpose?
  • What is the primary function of fluoride varnish in dental care?
  • What is the purpose of the largest hole punch (5) on the stylus in dental procedures?
  • When using a cervical clamp, what type of teeth is it typically used for?
  • What should always be done after polishing a tooth?
  • What is the correct order to remove a wedge and tofflemire?
  • What is the primary purpose of coronal polishing?
  • Which type of cement is recommended for cementing stainless steel crowns?
  • Which clamp numbers correspond to upper molars?
  • Where is the outer guide slot on a tofflemire located?
  • What type of hole is designated as punch 2 on the dental dam stylus?
  • What is the typical depth of an impression?
  • What is the primary method for removing food debris from teeth?
  • What is one primary characteristic of a protective base?
  • Why is it important not to punch a hole for a missing tooth when placing a dental dam?
  • What describes the relationship between the maxillary and mandibular arch?
  • Which dental procedure typically involves the removal of plaque and calculus?
  • What impression material is VPS adhesive used with?
  • Which crown type is typically formed before taking a dental impression?
  • What is a common sign of bruxism?
  • Which of the following is NOT a type of elastomeric material?
  • Which of the following is an indication for tooth whitening?
  • What is the maximum space allowed between a tooth when fitting a temporary crown?
  • What is the main purpose of using low abrasive paste on esthetic restorations?
  • Which of the following is not a type of grit used in dental procedures?
  • What size hole corresponds to punch 4 on the dental dam stylus?
  • What is the maximum RPM at which a low-speed headpiece operates?
  • What is the method used to create custom trays for at-home whitening?
  • What distinguishes wingless clamps from other types?
  • What is a notable benefit of using Glass ionomer in pediatric dentistry?
  • What instrument is used to shape proximal areas with a ball bur in dental procedures?
  • What does a temporary crown often aim to achieve after treatment?
  • What does the term 'gel' refer to in dental materials?
  • Which type of clamps have an extra projection?
  • What does mater alba refer to in dental hygiene?
  • Which characteristic of resin temporary cement makes it preferable for temporary crowns?
  • What is a primary component of polymerization in dental materials?
  • How long is the recommended usage period of whitening products in at-home treatments?
  • What type of deposits will persist if not removed during dental cleaning?
  • What does an effective coronal polishing technique enhance?
  • What is a precaution to take when using bristle brushes for stain removal?
  • Which of the following can be used as a stabilizing cord for a dental dam?
  • What type of trays are used for at-home tooth whitening treatment?
  • Which method uses a combination of water and air to clean surfaces in dentistry?
  • In an in-office treatment, what is placed on the facial surface of teeth during whitening?
  • What does the term syneresis refer to regarding impression material?
  • What term describes the condition of grinding your teeth?
  • What is the primary purpose of occlusal registration?
  • What is a key characteristic of zinc-oxide-eugenol type 1 when used as a base?
  • Which clamps are designated for primary teeth?
  • What method is used to remove hard deposits from teeth?
  • What is the fast setting time for alginate impression material?
  • What is the source of tetracycline stains on teeth?
  • When loading alginate into a tray, what is the first step?
  • What is the function of a Wedjet in dental procedures?
  • Which item is typically referred to as clear plastic strips used for composite fillings?
  • Which of the following describes the correct technique for polishing teeth?
  • What role does etchant play in dental procedures?
  • When seating an impression tray, which part should be seated first?
  • Which teeth are considered the corner stones of the mouth?
  • What shape is a sectional matrix often compared to?
  • What describes a perforated tray?
  • What treatment is indicated for the removal of pellicle?
  • Which type of stains is associated with the use of metallic substances?
  • What is a common characteristic of winged clamps?
  • Which item serves as the cutting end in the dental dam setup?
  • What is a smear layer in dentistry?
  • Calculus on teeth is defined as:
  • Which of the following is NOT an over-the-counter tooth whitening product?
  • Which material is specifically designed to flow into and around tooth details for a final impression?
  • How do whitening strips typically deliver results?
  • Which function does an insulating base serve in deep cavity preparations?
  • Stainless steel crowns are commonly used in which context?
  • What is the primary use of IRM in dental practice?
  • In dental procedures, what does the term "desensitizer" refer to?
  • What type of impression is typically used as a first step in the impression process?
  • Which grit is typically used for heavy stain removal?
  • Which type of cement would you use primarily for children’s dental needs?
  • Exogenous stains refer to:
  • Which of the following best describes hydrocolloid materials?
  • Polycarboxylate crowns are typically used for which type of teeth?
  • Which of the following best describes a T-band matrix?
  • Which component is essential for ensuring a firm hold of the dental dam clamp?
  • What is a matrix band used for in dentistry?
  • What is a characteristic of a sedative base in dental procedures?
  • Which area of dentistry typically utilizes a sectional matrix?
  • What is the primary function of a dental dam?
  • When placing a fixed bridge, what should you avoid doing with dental dam placement?
  • What are examples of soft deposits in dentistry?
  • What material is used for performed crowns?
  • Which property of alginate makes it suitable for preliminary impressions?
  • What is the primary use of provisional cement in dental practice?
  • What is typically used in conjunction with the sectional matrix during dental procedures?
  • In terms of impression materials, what does 'working time' refer to?
  • What is the key difference between ZOE Type 1 and ZOE Type 2?
  • What is the role of canines in dental anatomy?
  • What is the role of the dental dam napkin?
  • What are mylar strips primarily used for in dentistry?
  • What is a 5x5 dental dam primarily used for?
  • Which type of dental dam frame is specifically described as having little projections?
  • Which glass ionomer type is specifically used to combat class 5 decay?
  • What does the inner knob on a tofflemire control?
  • What is the process known as polymerization in elastomerics?
  • What does hole punch 1 on the dental dam stylus correspond to?
  • What type of adhesive would likely be used for a VPS tray?
  • How is the term 'alloy' defined in dental practice?
  • Extrinsic stains on teeth are caused by:
  • Which procedure is typically associated with the complete removal of calculus from teeth?
  • What is a dental dam stamp used for?
  • Which tooth type is primarily used for tearing food?
  • Which numbers correspond to lower molar clamps?
  • Nasmyth's membrane is associated with:
  • What type of hydrocolloid is alginate classified as?
  • What type of tray is best suited for an impression of half of the dental arch?
  • When performing polishing strokes, where should you start?
  • What is the purpose of using a wedge in dental dam placement?
  • What type of polishing paste should be used for esthetic restorations?
  • Which of the following is not a part of the working time for impression materials?
  • How does the dryness of an abrasive material affect its abrasiveness?
  • What defines a perforated impression tray?
  • Which dental dam size is used for adults and is meant for posterior teeth?
  • What process does trituration refer to in dentistry?
  • Why is it important to understand the functionality of different impression adhesives?
  • What numbers are associated with anterior clamps?
  • Which impression material is known for its viscosity and is used for capturing fine details?
  • What condition can arise from sensitive teeth during whitening treatments?
  • What is described as small particles of food in dental hygiene?
  • What is meant by 'setting time' in relation to impression materials?
  • What is the typical characteristic of alginate if hot water is used during mixing?
  • What is the role of calcium hydroxide in dental treatment?
  • What is the process of tooth whitening most commonly referred to as?
  • What major advantage does a perforated tray provide during dental impressions?
  • What aspect of trituration is critical in preparing dental materials?
  • What defines the insulating properties of a good dental base?
  • What is the first step in removing a dental dam?
  • What does edentulous arches mean?
  • What are the classifications of impressions?
  • A polymer crown is characterized by which of the following?
  • Which type of glass ionomer is specifically known for its fluoride release?
  • What characteristic is unique to performed crowns?
  • What is the primary characteristic of the auto matrix?
  • Which of the following materials is considered to have a sedative quality in temporary cement?
  • What is the appropriate amount of alginate powder for a mandibular impression?
  • What is the function of Glass ionomer Type 3 in dental procedures?
  • What is a common result of improper teeth whitening abuse?
  • What effect does hot water have on alginate?
  • What is the primary advantage of using polycarboxylate temporary cement over eugenol?
  • How does the amount of abrasive material used affect the rate of abrasion?
  • How many scoops of alginate powder are typically required for a maxillary impression?
  • Intrinsic stains within the tooth:
  • What is a ligature in dental dam practice?
  • What is created when material oozes through the holes of a perforated tray?
  • What is the role of the diagonal slot on a tofflemire?
  • Which of the following best describes plaque?
  • What is the purpose of Zinc phosphate Type 1 in dental applications?
  • What is a common effect of using cold water when preparing alginate?
  • Which property is associated with glass ionomer when used as a base?
  • What type of temporary crown is created using an impression taken beforehand?
  • During a restorative procedure, what is the function of the mylar strip?
  • What method is used for the removal of both subgingival and supragingival calculus?
  • What is one of the main characteristics of ZOE temporary cement?
  • Which type of impression is known as a bite registration?
  • What is the primary use of zirconium silicate in dentistry?
  • What is the primary use of dental dam forceps?
  • Which of the following is NOT a type of temporary cement used for a temporary crown?
  • What device is used to secure the placement of the matrix band?
  • How is supragingival calculus usually described?
  • Why is zinc phosphate type 2 considered a good base in dental procedures?
  • What material is the Ostby dental dam frame typically made of?
  • How can pellicle be effectively removed from the teeth?
  • Which method allows for simultaneous placement of the dental dam and clamp?
  • Which of the following types of clamp is least likely to have a projection?
  • Why are canines sometimes referred to as "corner stones" of the mouth?
  • Which of the following is NOT a type of tray adhesive?
  • What does the term 'septum' refer to in the context of a dental dam?
  • Which dental dam size is usually considered standard for adults?
  • What is an abrasive in dental context?
  • What does a quadrant tray specifically accommodate?
  • Which hole punch size is used for premolars on the dental dam stylus?
  • What effect does plaque buildup have on oral health?
  • What dental procedure helps maintain the health of canines?
  • Selective polishing in dental hygiene involves:
  • What does inverting a dental dam involve?
  • What is one consequence of neglecting coronal polishing?
  • What is the appearance of pellicle on the teeth?
  • What is the purpose of using a dental dam during a procedure?
  • Which type of cement would you select for a base when treating deep caries?
  • What is the function of alginate in taking dental impressions?
  • What is the appropriate action after taking a dental impression?
  • What does zinc phosphate type 2 primarily offer as a base?
  • What distinguishes polycarboxylate when used as a base in dental procedures?
  • What is the main use for Glass ionomer Type 6?
  • What type of teeth are the auto matrix rings most commonly used for?
  • Oral prophylaxis is commonly known as:
  • What is the typical application for ZOE Type 2 in dental practice?
  • Which adhesive is utilized with rubber base impression material?
  • What type of matrix band is specifically designed for use on primary molars?
  • Which of the following can lead to the development of dental fluorosis?
  • Which of the following best describes a clamp with more secure holding?
  • What is the importance of a fulcrum in dental procedures?
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