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