.png){kind=logo}
PDF Download
FREE AND STUDY GAMES ABOUT CHAPTER 47 QUIZ EXAM
QUESTIONS
Actual Qs and Ans Expert-Verified Explanation
This Exam contains:
-Guarantee passing score -35 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation
Question 1: When would a light gauge, vacuum-formed resin material be used?
Answer:
Bleaching trays Provisional coverage Both A and B Question 2: Which type of dental wax is often used to form a wall or box around a preliminary impression when it is poured up?
Answer:
Boxing wax Question 3: Which technique listed would be incorrect when pouring an impression?
Answer:
In large amounts Question 4: Before constructing a light-cured tray, what would be painted on the model?
Answer:
Separating medium
Question 5: Which type of baseplate wax is softest?
Answer:
I Question 6: What is one advantage of having laboratory equipment and trained personnel in the dental office?
Answer:
The dentist or private laboratory technician can handle larger cases.Question 7: Which of the following is/are used to prevent a custom impression tray from sitting too deeply when taking the impression?
Answer:
Spacer stops
Question 8: How should light-cured resin tray material be cured?
Answer:
For 2 minutes Question 9: When taking a face-bow registration, the vertical indicator rod should be aligned with which oral landmark?
Answer:
Midline
Question 10: What causes air bubbles in a model?
Answer:
Improper pouring of the impression Question 11: Which of the following statements correctly describes the pouring methods used to create the base portion of a dental model?
Answer:
The inverted-pour method consists of mixing one large mixture of plaster or stone and pouring both portions of the model in a single step.
Question 12: A vacuum former is utilized to conform a sheet of which of the following types of resin materials to a diagnostic model?
Answer:
Thermoplastic Question 13: When constructing ______ with a vacuum former, use a heavier-gauge, flexible plastic that does not require a spacer but does require an attachment for the strap.
Answer:
a mouth guard Question 14: Which type of wax is preformed with a thin sheet of aluminum foil between the layers?
Answer:
Bite wafers Question 15: How will gypsum material be affected if additional powder is added after mixing has begun?
Answer:
Weaker
Question 16: The first step in making a custom tray is to
Answer:
place blockout material to fill undercuts in the preliminary cast.
Question 17: How should a plaster mix not be manipulated?
Answer:
Complete mix in 30 seconds.Question 18: What device holds maxillary and mandibular models in an occlusal relationship?
Answer:
Articulator Question 19: Which item is used to polish or trim custom trays, provisional coverage, dentures, and indirect restorations?
Answer:
Dental lathe
Question 20: Which statement regarding infection control in the dental laboratory is accurate?
Answer:
It is equally as important as when you are with a patient.Question 21: A model consists of the _____ portion, which represents the teeth and tissues of the mouth, and the _____ portion, which forms the base of the cast.
Answer:
anatomic; art Question 22: Which methods are used to protect against biohazard contamination from impressions?
Answer:
Disinfecting impressions in the treatment room before bringing them to the laboratory Disinfecting laboratory benches and other contaminated items after use Disinfecting laboratory benches and other contaminated items before use All of the above
Question 23: What should be done to an impression before pouring?
Answer:
Use a gentle stream of air to remove excess moisture.Question 24: In minutes, how long should one wait before removing a model from an impression after pouring?
Answer:
45 to 60 Question 25: How should the patient bite when positioning the bite-fork during a face-bow registration?
Answer:
Slowly Question 26: When constructing custom trays, it is best to remove excess material with a _______ after it has cured.
Answer:
lab knife
.png)