DM Ch's: 10, 14, 16
Terms in this set (40)
if a mold that is created for investing and casting does not ____ to compensate for the action of the metal alloy, the casting will not fit.
form the mold for the casting
the most obvious purpose of the investment is to:
veneers on anterior teeth
porcelain is "best suited" for which of the following?
the crown(s) portion of a dental bridge is called the:
which of the following waxes is hard, leaves no burnout residue, and has a higher melting temperature?
during the casting procedure, a wax pattern is heated, and the wax melts an flows out of the mold. as the temperature continues to rise, any residual wax is burned away. this heating procedure is called:
add sprue to pattern, place in crucible former, invest, and then cast
identify the correct sequence in the centrifugal casting process.
a 33% gold alloy may also be expressed as:
the term used to define the process of firing porcelain powder to become a solid is:
the first statement is true; the second statement is false
one type of an all-ceramic restoration is castable glass. all-ceramic restorations are superior to ceramometal restorations in all respects.
which of the following is considered to be a fixed indirect restorations
a restorative material that is placed on the facial surface of anterior teeth to "cover" or hide an esthetic problem is called a:
another name for a provisional restoration is a ______ restoration.
silver is classified as a _____ metal.
a precise fit of the metal
an advantage of bonding porcelain to metal is:
which of the following restorative materials may be affected by numerous applications of acidulated phosphate fluoride?
an oblique or horizontal stroke, with appropriate instruments
margins of cast restorations can be altered by instrumentation with curettes and explorers. a suggested technique for deposit removal in these areas is to employ:
composite and glass ionomer
a dull sound when an instrument is being used on these surfaces should be evident with which of the following materials?
rough surfaces from smooth surfaces
tactile sensitivity and a sharp explorer will aid the clinician in identifying:
accelerate corrosion and marginal breakdown
creating temperatures of 140 degrees F or greater when amalgam restorations are being finished and polished will:
silex and tin oxide
what are the agents of choice for polishing a gold crown intraorally?
one benefit of a moist polishing agent is:
margins have been closely adapted to the crown preparation
when a cast gold crown has been marginated, it means that the:
when clinically polishing gold and gold foil, the regimen is similar to that of:
glass ionomer, composites, and porcelain
acidulated phosphate fluoride is not recommended for the following materials:
which type of abrasive looks like a grayish-black sand and is sometimes called "corundum"?
which type of abrasive is produced from volcanoes and is used in the laboratory and on restorative materials, such as gold, amalgam, and gold foil?
which abrasive is used as a slurry to polish amalgam restorations and is also called calcium carbonate?
when an abrasive on a dental restorative material is used, the abrasive action must be _____ the surface you are abrading.
bonded and coated abrasives
all of the following factors affect the rate of abrasion except one. which one is the EXCEPTION?
the process of producing the final shape and contour of a restoration is termed:
an example of a "vehicle" to be used with powders would be:
both statements are true
polishing involves using a series of finer and finer abrasives. it can also be accomplished by using the same abrasive material in a progression of larger to smaller grit.
during routine polishing with pumice, ____ um of the fluoride-rich layer can be removed.
high polish and low abrasion
the recommended prophylaxis pastes possess the properties of:
which of the following is harder than enamel?
biofilm and stain
air powder polishing is designed to remove:
the most frequently used abrasive in denitrifies is:
which of the following abrasives would most likely be found in a polishing agent for esthetic restorations?
traditional prophy paste, tin oxide, and a polishing agent for esthetic restorations.
mrs. smith presents for her prophylaxis appointment after a year, rather than the 6 month prescribed time. she has tobacco stain on the lingual surfaces of her natural teeth, two gold alloy crowns, and several esthetic restorations. which combination of cleaning/polishing agents should be chosen?