DENTAL MATERIALS RBE REVIEW 2
Dental Materials RBE Review Quiz
Test your knowledge and expertise in dental materials with our comprehensive quiz designed for dental professionals and students alike!
This quiz covers various topics such as impression materials, bite registration, and casting techniques. Challenge yourself and enhance your understanding of dental materials through engaging questions.
- 51 multiple-choice and checkbox questions
- Perfect for brushing up on your skills
- Track your progress and knowledge growth
50% of Palladium is added to gold to make a white gold.
TRUE
FALSE
Better strength than other restorations because in these crowns, porcelain is engineered with high strength compounds like zirconia ceramics.
TRUE
FALSE
It allows the dentist to observe accurately tooth contact, occlusal discrepancies and to fabricate restorative procedure for the patient without changing occlusion.
BITE REGISTRATION
ARTICULATION
MOUNTING
ORAL EXAMINATION
Functions of a temporary crown except:
Maintain the dental aesthetic
Shape approximates that of the unprepared tooth.
Confirm that the tooth preparation is sufficient
Maintain the tooth’s function
An individualized impression tray made from a cast recovered from preliminary impression.
ENAMEL TRAY
PERFORATED TRAY
NON PERFORATED TRAY
CUSTOM TRAY
A process by which a wax pattern of a shape is converted into metal.
BURNOUT
INVESTING
CASTING
SPRUING
It is a removable dental prosthesis fabricated for placement immediately following the removal of natural tooth/teeth.
Immediate dentures
Interim Immediate dentures
Fixed Partial dentures
Acrylic Partial dentures
Wax pattern is eliminated so that a mold is created into which a molten alloy can be placed.
BURNOUT
SPRUING
CASTING
INVESTING
A temporary crown is a tooth-shaped cap that protects an artificial (a natural) tooth or implant until your permanent crown can be made and cemented into place. It is used when a natural tooth requires a traditional permanent crown. 20
Both statements are true and related
Both statements are false but not related
Statement 1 is true and statement 2 is false
Statement 1 is false and statement 2 is true.
This technique requires two operators to mix the putty and wash impression material at the same time.
BOXING - IN METHOD
INVERSION METHOD
MULTIPLE MIX TECHNIQUE
RELINE TECHNIQUE
The first Non-Aqueous elastomeric “rubber” impression material developed for Dentistry.
POLYETHER
POLYSULFIDE
ADDITION SILICONE
CONDENSATION SILICONE
All are true in the correct bite registration in static occlusion except:
The teeth are closed and positioned where they meet best.
The anterior teeth take all the weight of the bite
The overall position of the bite is attainable once the patient swallows.
The tip of the tongue can touch the back part of the oral palate
Type of cast which is obtained from final impression:
PRELIMINARY CAST
MASTER CAST
REFRACTORY CAST
DIE CAST
Working time for Condensation Silicone Impression Materials:
3-5 MINS
2-4 MINS
2-5 MINS
1-3 MINS
The following are the criteria of a good impression except:
No critical areas are torn
No bubbles or voids are present in critical areas
Sides are flush, flat and smooth
All critical areas are reproduced
The contact relationships of maxillary and mandibular teeth as they move against each other:
DENTAL ARTICULATION
ARTICULATORS
MOUNTING
BITE REGISTRATION
The following are the advantages of Condensation Silicone except:
It is easy to mix and has adequate working and setting time.
Dimensional stability
Offers the clinician a wider range of techniques for its use
More pleasant with respect to taste and smell.
Setting time of a Condensation Silicone:
5-7 MINS
8-9 MINS
6-7 MINS
6-9 MINS
A type of bite registration that is supplied in the form of cartridge with auto mixing guns and tips.
Zinc oxide paste
Polyvinylsiloxane
Polyether
Alu wax
It is the most widely used material to record the relation.
PINK BASEPLATE WAX
ALU WAX
MODELLING WAX
STICKY WAX
The contact relationships of maxillary and mandibular teeth as they move against each other:
BITE REGISTRATION
DENTAL ARTICULATION
ARTICULATORS
MOUNTING
Plaster of Paris should be allowed to set undisturbed generally for:
30 MINS
45 MINS
1 HR
35 MINS
As a wax veneer over an original impression to contact and register the details of the soft tissue.
BITE REGISTRATION WAX
CORRECTIVE WAX
UTILITY WAX
BOXING WAX
Used for accurate articulation of certain models of opposing arches.
BITE REGISTRATION WAX
CORRECTIVE WAX
UTILITY WAX
BOXING WAX
This is also known as Vinyl Polysiloxanes (VPS) and polyvinylsiloxanes.
POLYSULFIDE
CONDENSATION
ADDITION SILICONE
POLYETHER
Low melting element, used to prevent oxidation of the alloy during the casting process.
COPPER
ZINC
NICKEL
SILVER
This theory suggests that rehydrated plaster particles unite through hydrogen bonding with sulfate groups to form the set material.
COLLOIDAL THEORY
CRYSTALLINE THEORY
DISSOLUTION PRECIPITATION THEORY
HYDRATION THEORY
All are true for type II gypsum except:
Used for making preliminary cast for CD
Making impression for maxillofacial prosthesis
Used to fill flask during complete denture constructions.
For mounting cast on articulator
Something that is used to keep heat or sound contained, or something that does not conduct electricity.
CONDUCTOR
INSULATOR
SEMI- CONDUCTOR
SILICON AND GERMANIUM
These materials behave like a rigid body until some minimum value of shear stress is reached.
PLASTIC
NEWTONIAN
DILATANT
PSEUDOPLASTIC
It has an irregular orthorhombic crystals shape with capillary pores and requires more water for hydration to get converted in calcium sulfate dihydrate.
DIE STONE
PLASTER OF PARIS
DENTAL STONE
IMPRESSION PLASTER
Increased setting time decreases mixing and have lower water/powder ratio. Decreased setting time increased mixing and have a higher water/powder ratio.
Both statements are correct.
Both statements are incorrect.
Statement 1 is correct and statement 2 is incorrect.
Statement 1 is incorrect and statement 2 is correct.
Alginate impression material are supplied as fine powder that are mixed with water to form a fluid mass or slurry that can be poured and shaped and that later hardens into a rigid, stable mass.
TRUE
FALSE
The following are the factors affecting the setting time except:
MIXING AND SPATULATION
MANUFACTURING PROCESS
TEMPERATURE
SETTING EXPANSION
The weakest and the least expensive of the three-gypsum product:
TYPE II
DENTAL STONE
PLASTER OF PARIS
TYPE IV
Water/powder ratio is the proportion of water to powder used to make a workable mix of a particular product.
TRUE
FALSE
Measured from the start of mixing to the point where the consistency is no longer accepted for the product’s intended purpose.
SETTING TIME
WORKING TIME
MIXING TIME
NONE OF THE ABOVE
All are true about disinfection of an impression by spraying except:
Rinse the impression with running water and shake to remove excess water.
Remove the impression from the disinfectant.
Seal the sprayed impression in a zippered plastic bag for the disinfection time recommended by the manufacturer.
Spray the rinsed impression and impression tray with acceptable disinfectant.
__________________ should never be sprayed because they are extremely toxic as aerosol.
Glutaraldehydes
Sodium bromide
Iodophors
Chlorine
The primary goal of infection control is to prevent cross-contamination between patients and dental care providers.
TRUE
FALSE
Disinfection by immersion is preferred over disinfection by spraying. The most important reason is to:
The spraying procedure must be performed twice, 10 minutes in between.
The aerosol produced is usually toxic.
Constant contact of the spray with all the surfaces of the impression cannot be assured
Office personnel don’t have the necessary time available to spray thoroughly.
Gagging is the characteristic of choking or retching during impression taking.
TRUE
FALSE
Alginate is classified as Reversible Hydrocolloid.
TRUE
FALSE
Purpose of taking an alginate impression is to make an accurate reproduction of the maxillary and mandibular arches and adjacent tissues. Study models constructed from alginate impressions can be used for planning patient treatment and can serve as a part of the patient’s temporary record.
Both statements are correct.
Both statements are incorrect.
Statement 1 is correct and statement 2 is incorrect.
Statement 1 is incorrect and statement 2 is correct.
It is the close inspection of the teeth and tissues of the mouth using physical assessment, radiographs, and other diagnostic aids. Dental Care begins with planning, and is followed by diagnosis, assessment, implementation and evaluation.
Both statements are correct.
Both statements are incorrect.
Statement 1 is correct and statement 2 is incorrect.
Statement 1 is incorrect and statement 2 is correct.
Used to distinguish/ detect caries, calculus (tartar) and discrepancies on teeth.
Periodontal probe
Dental explorer
Spoon excavator
Cotton plier
The following are all correct about Removable Prosthesis except:
Permanently attached to the abutment teeth
Replaced missing teeth
Causes no damage to the teeth adjacent to the missing one
Supported by surrounding tissue in the oral cavity
The following are the advantages of Dental amalgam except:
Ease of use
High compressive strength
Insulative
Economic
Which impression materials may be adversely affected by disinfectant, therefore immersion time is limited to no more than 10 minutes.
Silicone and polyether
ZOE paste
Polyether and hydrocolloid
Irreversible hydrocolloid
Plaster of Paris is used for the following except:
DIAGNOSTIC CAST
STUDY MODELS
ORTHODONTIC MODEL
TREATMENT PLANNING
When excess water is not present in a gypsum, it is known as the:
WET STRENGTH
DRY STRENGTH
INITIAL SETTING TIME
SURFACE STRENGTH
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