Oregon Expanded Function Dental Assistant (EFDA) Practice Exam

These questions are part of the practice quiz. Start practicing

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