Title: Chapter 13: Test Generator Questions
Course: DEH 2821 Medically-Compromised Patient

Q: All of the following are materials used in taking an alginate impression except:
- soft utility wax for preparation of tray rim
- irreversible hydrocolloid
- soft baseplate wax for interocclusal record
- quadrant tray
A: quadrant tray

Q: Application of a wax rim around the borders of trays is to prevent the metal tray rims from causing discomfort to the soft tissues. Evaluation of tray size is determined by lifting the tray handle while keeping the posterior border of the tray in position to determine whether the coverage will be ample posteriorly to include the retromolar areas and laterally to allow for one-quarter inch thickness of impression material on the facial and lingual aspects of the teeth.
- The first statement is true and the second statement is true
- The first statement is true and the second statement is false
- The first statement is false and the second statement is false
- The first statement is false and the second statement is true
A: The first statement is true and the second statement is true

Q: How would you retract the patient's lip and cheek when placing a mandibular tray?
- With index and middle fingers of dominant hand
- With index and ring fingers of nondominant hand
- With ring and middle fingers of dominant hand
- With index and middle fingers of nondominant hand
A: With index and middle fingers of nondominant hand

Q: Why should the mandibular impression be made first?
- The mandibular impression is easier than the maxillary impression
- Begin in and where discomfort or gagging may be the least likely
- The mandibular impression is harder, so it is best to get that impression done first
- Patients always prefer to have mandibular tray done first
- As a distracter
A: Begin in and where discomfort or gagging may be the least likely

Q: To prevent cross-contamination during laboratory procedures, impressions are disinfected with an approved disinfectant after rinsing. When impressions are to be sent to a laboratory, they are isolated in a sealable plastic bag.
- The first statement is true and the second statement is true
- The first statement is true and the second statement is false
- The first statement is false and the second statement is false
- The first statement is false and the second statement is true
A: The first statement is true and the second statement is true

Q: What is the most frequent error in use of alginates for impressions?
- Tearing the impression
- Improper disinfection
- Delay in pouring the cast
- Inadequate mixing time
A: Delay in pouring the cast

Q: What occurs when an alginate impression is left out for a long period of time?
- Dehydration or water loss
- Nothing occurs
- Even surface
- Temporary distortion
A: Dehydration or water loss

Q: Which of the following dental materials are used to fabricate a study cast?
- Baseplate wax and white dental stone
- Rope wax and yellow dental stone
- Baseplate wax and yellow dental stone
- Rope wax and dental stone
A: Baseplate wax and white dental stone

Q: If cool water is used to mix the dental stone, what will occur?
- Cooler water will increase the setting time
- Cooler water will not affect the dental stone mix
- Cooler water will decrease the setting time
- Cooler water will slow down an exothermic reaction
A: Cooler water will decrease the setting time

Q: The water-to-powder ratio for dental stone mixture is:
- 10 to 20 mL to 100 g stone
- 30 to 40 mL to 50 g stone
- 10 to 20 mL to 50 g stone
- 30 to 40 mL to 100 g stone
A: 30 to 40 mL to 100 g stone

Q: How would you pour up a study cast?
- Start incorporating stone using a spatula in small amounts at one posterior corner and allow mix to flow through the impression while using the vibrator
- Start incorporating stone using a spatula in large amounts at one posterior corner and allow mix to flow through the impression while using the vibrator
- Start incorporating stone using a spatula in small amounts at the anterior location and allow mix to flow through the impression while using the vibrator
- Start incorporating stone using a spatula in large amounts at the anterior location and allow mix to flow through the impression while using the vibrator
A: Start incorporating stone using a spatula in small amounts at one posterior corner and allow mix to flow through the impression while using the vibrator

Q: Which of the following is a correct technique used to form a base for the study cast?
- Rubber model-base former, plastic model former, nonabsorbent surface
- Plastic model former, form a mass of stone on glass or ceramic slab, nonabsorbent surface
- Rubber model-base former, form a mass of stone on glass or ceramic slab, nonabsorbent surface
- Plastic model former, form a mass of stone on a paper towel or glass or ceramic slab
A: Rubber model-base former, form a mass of stone on glass or ceramic slab, nonabsorbent surface

Q: Besides the one-step method for forming the base of the cast, there are two other methods. These methods are known as which of the following?
- Boxing technique and single-pour technique
- Triangle technique and double-pour technique
- Rectangle technique and single-pour technique
- Boxing technique and double-pour technique
A: Boxing technique and double-pour technique

Q: The objective to the boxing technique is to form a wall around the impression before pouring to provide a shape for the base as well as to prevent the need for inverting the poured impression. A strip of utility wax is attached slightly below the periphery of the impression and completely around the impression.
- The first statement is true and the second statement is true
- The first statement is true and the second statement is false
- The first statement is false and the second statement is false
- The first statement is false and the second statement is true
A: The first statement is true and the second statement is true

Q: The exact proportions of the study casts and the steps required to accomplish the trimming and finishing depend on several factors, which include measurements of the patient's dental arches. Precision-type model trimmers have angulators to fit on the table of the trimmer to give average set angles for trimming margins of the casts.
- The first statement is true and the second statement is true
- The first statement is true and the second statement is false
- The first statement is false and the second statement is false
- The first statement is false and the second statement is true
A: The first statement is true and the second statement is true

Q: All of the following are preliminary steps to trimming the cast except:
- that the cast must be dry
- removing the bubbles of stone on or about the teeth with a small sharp instrument
- leveling down excess stone that is distal to the retromolar area and tuberosity
- trimming casts conservatively on the sides to make a smooth surface for marking
A: that the cast must be dry

Q: The objective for trimming bases is to make bases perpendicular with the mean occlusal plane and to each other. To make correct proportions for the height of the casts, the art portion should be one third and the anatomic portion two thirds.
- The first statement is true and the second statement is true
- The first statement is true and the second statement is false
- The first statement is false and the second statement is false
- The first statement is false and the second statement is true
A: The first statement is false and the second statement is true

Q: How is a study cast labeled?
- With patient's name only
- With patient's name and the date
- With patient's name and social security number
- With doctor's name and the date
A: With patient's name and the date

Q: For posterior borders you select the longest cast to trim first by measuring from the incisors to points distal to the retromolar and tuberosity areas. For anterior borders the maxillary cast is trimmed to a point and the mandibular cast is rounded.
- The first statement is true and the second statement is true
- The first statement is true and the second statement is false
- The first statement is false and the second statement is false
- The first statement is false and the second statement is true
A: The first statement is true and the second statement is true

Q: A ruler can be used to draw guidelines for trimming the maxillary arch on each side of the midline to the cuspid areas. Sketch the shape of an arc from canine to canine to conform generally with the curvature of the anterior teeth and approximately two-thirds of an inch labial to the depth of the mucobuccal fold for the mandibular arch.
- The first statement is true and the second statement is true
- The first statement is true and the second statement is false
- The first statement is false and the second statement is false
- The first statement is false and the second statement is true
A: The first statement is true and the second statement is false