DH104 Ch. 11-12
The success rate of dental implants is more than _____% with careful case selection.
90%
the primary base metal used in casting alloys are
copper, nickel, silver, zinc, tin, titanium
The most esthetic margin for a ceramic-metal crown is the ___________________________________.
facial margin
Tin is often added to the solder to___________________ the melting range and improve the flow of the molten metal.
lower
____is the base metal that has the highest incidence of allergic response.
nickel
______ solders are used primarily in dentistry to solder fixed-space maintainer components and to solder wire components to removable orthodontic appliances
silver
Predetermined holes in the ________________ allow the surgeon to cut a hole into bone for the implant at the correct angulation.
stent
the metal most commonly used for dental implants is _____
titanium
Noble dental casting alloys do not require any gold but must contain at least ________________noble metals by weight.
25%
During a two-stage endosseous surgical implant placement procedure, the healing abutment is placed about _____ following placement of the implant fixture.
3 months
the patient should return to the dental office at _________ intervals for routine implant assessment and maintenance
3-4 months
Failure of the implant that occurs after the initial integration is often caused by:
bacterial infection extending from the peri-implant tissues into the bone or by overloading the implant during function, leading to loss of supporting bone
the purpose of a post is to retain the _______ over which the final restoration (crown) is placed
core buildup
the _______ implant is the most commonly used in dentistry today
endosseous
The higher the _____________________ number of a gold solder, the higher the gold content and the lower the melting point of the solder.
finess
to make room for the metal substructure and porcelain, porcelain fused to metal crowns require ______ reduction of the tooth than all-metal crowns
greater
An _________________________________ surgical procedure means that the implant fixture is placed directly into the new socket when the implant procedure involves the extraction of a tooth.
immediate-placement
the correct order for application of the porcelain layers during the creation of a porcelain-bonded-to-metal crown is
opaque layer--> body and incisal porcelains--> surface glaze
____ increases the hardness of the alloy and is widely used because it has good corrosion resistance and is less extensive than gold
palladium
although _______ is considered to be a precious metal, it is not considered noble because of its corrosion in the oral cavity
silver
implants are of three main types
subperiosteal, transosteal, and endosseous
Close adaptation of _____ epithelium to the implant surface helps develop a biological seal that prevents microorganisms from invading the tissues.
sulcular
_____ metal has the characteristics of being able to be heat-modified, or annealed, to create differing resistance to deformity
wrought