Dental materials quizzes chpt 1-4,15,8

most common conservative method of creating space in sulcus of a prepared tooth for wash/syringe material is

dental impression material

which astringent has potential to be dangerous to pt w/ CVD

The study of dental materials includes knowledge of

which organization establishes standards to develop specifications & testing on an international level

There are 3 oxygen tanks, 1 in the center of clinic and 1 in storage room

which dental material is the best thermal conductor

the intensity of color is

Masticatory forces on a cusp tip can reach up to

successful double bite impression for crown for #30 includes

Microleakage may be responsible for

restorative materials with values of thermal conductivity similar to enamel are

when using the eyewash station it does not matter how long you rinse your eyes since all chemicals only need 2min rinse

oral biofilm is a complex organization of microorganisms on oral surfaces & restorations

color shade can vary depending on the incident light/source of light this effect is

Faculty permission is not required for using the lab room

materials mixed slowly on a cooled glass surface will have shorter working time & longer setting time

increasingly higher forces are applied to a material it will eventually fracture and the point of fracture is called

what is the most difficult stain to remove

which are ways chemicals can enter the body

which is true about ADA seal

Disinfection of impressions is not needed for all impressions

proper PPE for handling materials that release particulate matter includes

when deformation is not permanent & material recovers it has good

which are most commonly used impression materials

as the viscosity of impression material increases which property decreases

How many spill kits are there?

internal reaction to an externally applied force is called

There is only 1 emergency kit in the center of clinic during clinic hrs, then outside hrs its in storage room

The safe interaction of dental material w/ rest of body is defined as the material's

why should all remnants of amalgam be removed before autoclave/sterilizing

polyether has the highest natural (no chemicals added) wettability

which whitening agent is painted on tooth & held in place for 30min w/ sealer

least accurate elastic material is

force applied when 2 surfaces slide against each other in opposite directions is

which material is transformed from sol to gel state when set

when the weight of a material increases in relationship to its volume it is

after removing PVS impression from the mouth it has unset material on surface, what causes this

Kay has MOD amalgam #30 When biting it hits #3 with a FGC Kay complains of shock & metal taste this is because

which elastomer will imbibe water when stored in it & change dimensions

what properties must final impression materials include

active ingredient in most in office/OTC whitening products is

Where are the 6 fire extinguishers located

stress is amount of force from within an object _ is amount of change that the force has produced

which is a hazard associated w/ use of dental lathe

which material is least affected by soaking in disinfectant for 2hrs

How many first aid kits are there

which can remove intrinsic stains

patient glasses do not have to be shatter resistant

in office whitening produces equal results to home whitening but is faster

Where is the fire blanket located

whitening of teeth works by

eyewash stations are best used in emergency only if the employee has had training in their use

direct restorations are made inside the mouth

what are the advantages of PVS as a substitutes for alginate

what are advantages of digital impressions

what are reasons the wash material may tear when removing the set impression from the mouth

ability of a material to dissolve in liquid is

thioxitropic materials are those that

which is not a classification of dental materials

whitening procedures should be avoided if pt has

a defining characteristic of a solid is that it has

working time is the time from mixing until it begins to harden and is no longer workable because it reached inital set

material you're using doesn't flow well so it has high__

preliminary impressions are useful for

what are undesirable outcomes of whitening

Where are the 3 eye wash stations located (select all that apply)

contact between 2 dissimilar metals in the mouth may result in what reaction

chemicals can't be absorbed through direct skin contact

The leakage of fluids and debris extending along the tooth restoration interface is

a force applied when two surfaces slide against one another in opposite directions is

an irreversible hydrocolloid can't reverse from gel to sol bc chemical rxn prevents it

its important for an accurate impression that the tray not be

what is the best way to min exposure to chemical hazards

colonies of bacteria growing on the teeth are called

how many people need to be present in lab room at all times

force applied at opposite ends to stretch/pull object is

excessive film thickness of cements may cause

which of the following restorative materials is the most soluble

elastic recovery of alginate material can be increased by

hardness determines the material's ability to

_ are the strongest bonds that hold atoms together

resistance to flow is known as

material subject to repeated stressed like mastication are subject to fracture due to

How much force do denture wearers apply versus a patient with teeth

twisting force is

Hydrophilic materials are those that have

which are elastic impression materials

our current approach to dentistry which identifies research, clinician expertise, pt preference if

which material has the lowest tear strength

what is the most important step to prevent the transmission of infectious diseases

What type of solubility level do we want for materials

surface discoloration of a metal restoration is

what is the most common work related health & safety hazard in clinic

addition silicones are very dimensionally stable

hydrophobic impression materials

which eye wash station provides limited wash due to the way it is made

which are reasons DH should know & understand dental materials

mixing time is from beginning of mixing to beginning of working time

corrosion is of greatest concern for which of the following restorative materials