CHAPTER 47 Questions with complete solution 2024/2025
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Course
DENTAL MATERIALS
Institution
DENTAL MATERIALS
CHAPTER 47 Questions with complete solution 2024/2025 CHAPTER 47
dental materials in the lab area may include: - correct answer corrosive, toxic, or carcinogenic substances
biohazards are associated with the _________ area and ________ center - correct answer treatment area and steriliza...
CHAPTER 47
dental materials in the lab area may include: - correct answer ✔corrosive,
toxic, or carcinogenic substances
biohazards are associated with the _________ area and ________ center -
correct answer ✔treatment area and sterilization
impressions and other items brought into the lab can harbor bacteria and
saliva and be - correct answer ✔infectious
heat sources used in the lab include? - correct answer ✔butane or propane
torch or a bunsen burner
what is the model trimmer? - correct answer ✔a machine sued to trim stone
or plaster models.
how is the dust from the model trimmer controlled? - correct answer ✔a
gentle stream of water continuously runs on the wheel
what is a vacuum former? - correct answer ✔a small electric appliance used
to construct custom trays for bleaching, mouth guards, and positioners for
orthodontics
what part of the vacuum former is a heating element that warms and softens a
sheet of thermoplastin resin? - correct answer ✔The upper part
, how is a vibrator used in the dental lab? - correct answer ✔it removes air
from the mix of plaster or stoneand aids in the flow of a material when you
pour a model
a ____ speed handpiece is used for many tasks, such as trimming custom
impression trays, adjusting dentures, and polishing provisional and indirect
restorations - correct answer ✔low speed
what is a sandblaster? - correct answer ✔handheld unit that sprays sand at a
high speed creating etching or pitting on a surface area of metals, porcelain or
acrylic
when is the use of a sandblaster suitable? - correct answer ✔repair of
crowns, dentures, and appliances, cementation of crowns, bridges and inlays
what is an articulator? - correct answer ✔mechanical device used in dentistry
to hold maxillary and mandibular dental models in position and helps the
dentist/lab tech make dentures, prosthodontics restorations (inlays,
onlays,bridges) and ortho appliances
face bow what is it? - correct answer ✔1st step dentist takes to determine
positional relationship of the max. arch to the TMJ
(face bow) the ______ relationship or _______record is a measurement of
where the teeth are positioned when the joints are aligned correctly & before
teeth come in contact. - correct answer ✔centric relationship or bite record
Used to polish or trim custom trays, provisional coverage, dentures, and
indirect restorations. - correct answer ✔dental lathe (has attachments like
the polishing wheel that connect to it) _pumice_ is used to polish
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