Ch. 47 Laboratory Materials and Procedures Student Workbook Questions
Studied by 0 people
Learn
Practice Test
Spaced Repetition
Match
Flashcards1/39
There's no tags or description
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced |
|---|
No study sessions yet.
40 Terms
A dental material that is uniform in mixture and consistent throughout is said to be ___________.
Homogeneous.
A ______ is a dental lab machine used for cutting, grinding and polishing dental appliances.
Lathe.
_______ is a type of mineral used in the formation of plaster of paris and stone.
Gypsum.
A substance is said to be ________ if it has an explosive property.
Volatile.
A _________ is a compound of a gypsum product with two parts water to one part calcium sulfate.
Dihydrate.
If an object is resistant to change in width, height, and length, it is said to be _____________________.
Dimensionally stable.
The _______ is the portion of an articulator used to transfer the relationship of the upper teeth and the temporomandibular joint to a cast.
Face bow.
A _______ is a compound of many molecules.
Polymer.
______________________ is a chemical process in which crystals form into a structure.
Nuclei crystallization.
___________ is the removal of one-half part water to one-part calcium sulfate to form the powder product of gypsum.
Hemihydrate.
A ___________ is a replica of the maxillary and mandibular arches fabricated from an impression.
Dental model.
______________ refers to the structural portion of a dental model/cast.
Anatomic portion.
A ____________ is a dental laboratory device that simulates the movement of the mandible and the temporomandibular joint when models of the dental arches are attached.
Articulator.
A ________ is a molecule that when combined with others forms a polymer.
Monomer.
______ is a mixture of gypsum and water to be used in the finishing of models.
Slurry.
Where would you commonly find the lab in a dental office?
In proximity to the clinical operatory
3 multiple choice options
Which specialty practice would have a more extensive laboratory setup?
b and c
3 multiple choice options
An example of a contaminated item that could be found in the dental lab would be ________.
Impression
3 multiple choice options
Which piece of lab equipment would be used to grind away plaster or stone?
Model trimmer
3 multiple choice options
Which piece of lab equipment would the dentist use to determine centric relation from a diagnostic model?
Face bow
3 multiple choice options
The size of the wax spatula most commonly used in the laboratory is a _______.
#7
Another name for a dental model is ____________.
Dental cast
3 multiple choice options
What dental material is used in creating a dental model?
Gypsum
3 multiple choice options
Which type of gypsum is used to fabricate a replica for an inlay or crown?
Die stone
3 multiple choice options
The powder (g)/water (ml) ratio of model plaster for pouring a dental model is ________.
100/50
3 multiple choice options
When a gypsum material is mixed, how is the powder and water incorporated?
Add powder to the water
3 multiple choice options
Gypsum materials are mixed using a __________________________.
Spatula and rubber bowl
3 multiple choice options
Which of the following terms are the description of the portions of a dental model?
a and c
3 multiple choice options
When pouring up an impression, where would you begin placing the gypsum material in a mandibular impression?
Most posterior tooth
3 multiple choice options
How long should you wait before you separate a model from its impression?
45 to 60 minutes
3 multiple choice options
Which model (maxillary and mandibular) should you begin trimming first?
Maxillary
3 multiple choice options
What is one specific area of a dental model where the maxillary and mandibular models are trimmed differently?
Anterior portion
3 multiple choice options
What should be placed between the two models during trimming?
Wax bite
3 multiple choice options
Digital models and traditional plaster models have the same advantages listed below except:
Unbreakable
3 multiple choice options
Of the three types of custom trays discussed in the chapter, which technique uses a volatile hazardous material?
Acrylic resin
3 multiple choice options
What type of custom tray would be made for a vital bleaching procedure?
Thermoplastic resin
3 multiple choice options
What type of wax is used to form a barrier around a preliminary impression when it is poured up?
Boxing wax
3 multiple choice options
To extend an impression tray, what type of wax is used?
Utility wax
3 multiple choice options
What type of wax is used to obtain a patient's bite?
Registration wax
3 multiple choice options
What is placed to prevent a tray from seating too deeply onto the arch or quadrant?
Spacer stops
3 multiple choice options
Note 
Flashcards (21)