Terms in this set (35)
Proper finishing, polishing, and cleaning of tooth structures and restorative materials __ of the restorative material.
Improves the esthetics, improves the tissue health, increases the longevity
Which of the following scales ranks materials by their relative resistance to abrasion?
Which of the following is true concerning the hardness of porcelain relative to enamel and dentin?
Porcelain is harder than enamel and dentin
Abrasive particles that are __ will cut more efficiently.
Large and irregular
Which statement explains how fine-particle diamonds are supplied?
Supplied in a paste for polishing composite and porcelain restorations
The powder form of __ is used in sandblasting restorations in preparation for cementation and air abrasion.
Which of the following is correct about pumice?
A major component of many prophhylaxis pastes used to polish tooth structure, dental amalgam, and acrylic bases
The philosophy of __ polishing is regarded as the most appropriate approach in the selection of which teeth and surfaces to polish.
Which of the following is true of abrasive materials in dentifrices?
The abrasive agents improve the efficiency of the toothbrush in the removal of stains, food debris, and biofilm
Why shouldn't prostheses with metal components by placed in dilute acid solutions or hypochlorites (bleach)?
The resultant corrosion of these components
The benefits of a properly finished and polished restoration/prosthesis include __ biofilm retention and __ resistance to tarnish and corrosion.
Polishing the contact area between restored teeth is:
Undesirable because it may leave an open contact
Margination may be indicated if the overhang is __, the contact is __, and there is no indication of caries.
When using hand instruments for margination, use very sharp instruments and begin __ to the margin of the restoration, using a shaving motion in __ overlapping strokes.
Which of the following materials is/are recommended for polishing of composite restorations?
Aluminum oxide polishing paste
Which of the following is correct regarding staining at the margins of composite restorations due to microleakage?
Cannot be polished away
Which of the following may be used to remove biofilm from implants without abrading the surface of the titanium?
Special plastic hand instruments, plastic sheaths for ultrasonic scalers, nonabrasive paste or tin oxide
Air polishing utilizes a combination of __, air, and water at a pressure of approximately 40 psi as an effective and efficient means of removing strains and soft deposits from enamel surfaces.
Which of the following is true of microabrasion?
It can be used to remove minimal amounts of tooth structure
Which of the following is true concerning safety and infection control during finishing and polishing procedures?
All laboratory wheels and rotary cutting devices should be sterilized or disinfected
Which of the following choices will affect the abrasiveness of polishing agents?
number of particles utilized, hardness of the material, speed of the device
How are dental abrasives supplied?
paste, loose, coated
do not change size with use
What could happen if utilizing a high-speed handpiece while using an abrasive agent?
Cause loss of control over the handpiece
A higher number of particles or flutes on a rotary finishing bur __ its abrasive intensity.
How does prophylaxis paste differ from commercially prepared dentifrice?
It is more abrasive
Which statement best describes rubber cup polishing?
Removes some of the fluoride-rich layer of enamel
What does the ADA Seal of Approval for dentifrices ensure for the consumer?
Abrasives are within safe limits
What is the purpose of approved denture cleansers?
Freshen the acrylic, loosen stains and plaque, will not abrade the material
Which of the following is not a benefit of polishing a restoration?
Increased attrition of tooth structure
A natural abrasive composed of quartz and silica
A synthetic material that produces an extremely hard and efficient abrasive material
A synthetic abrasive; the powder form is used in sandblasting restorations in preparation for cementation
Volcanic silica manufactured as a loose abrasive
An extremely fine abrasive used extensively as a final polishing agent for enamel and restorations