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NDAEB PRACTICE QUESTIONS AND ANSWERS
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NDAEB PRACTICE QUESTIONS AND ANSWERS
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NDAEB PRACTICE QUESTIONS AND ANSWERSWho was the first woman to graduate from a recognized dental college? - answer- Lucy
B. Hobbs-Taylor
What are the conditions that would indicate the need for restorative dentistry? - answer-
- initial or recurring decay
- replacement or failed restorations
- abrasion or wearing away of tooth structure
True or False: Aesthetic dentistry is primarily devoted to improving the appearance of
teeth; specific conditions that indicate a need for aesthetic treatment include the
replacement of a partial denture. - answer- False
The process of removing unhealthy tooth structure while leaving a limited amount of
healthy structure for the tooth to maintain a restoration is known as cavity preparation.
This process involves which of the following steps? - answer- - initial preparation
- outline, resistance, retention, convenience form
- final preparation
Responsibilities of the dental assistant in the restorative process can include performing
expanded function and maintaining patient control. - answer- True
Class II restorations are found on the.... - answer- Posterior teeth
The usual material of choice for class III and Class IV restorations is ... - answer-
Composite Resin
The Class V restoration is classified as a smooth surface filling and can be found on
the... - answer- - incisors
- canines
- premolars
When are retention pins used as a part of the direct restorative process? - answer- -
when decay has extended beyond the normal size and shape of the cavity preparation
- when a stronger system for retaining and supporting the restoration is needed
- when one or more cusps of the tooth is missing
A veneer is a thin layer of tooth-coloured material that is placed on the facial surface of
a prepared tooth and is used for: - answer- - improving appearance of teeth that are
abraded, eroded or discoloured
- closing a diastema
- improving alignment of teeth
When is tooth whitening or vital bleaching not indicated for a dental patient? - answer-
when the patient presents with severe tetracycline and fluorosis stains
,A matrix must be used to create a temporary wall for which of the following
classifications of tooth restoration? - answer- Class II, III, and V
The most common matrix system used for class II posterior restorations is the... -
answer- tofflemire retainer and matrix band
The universal/Tofflemire retainer holds the matrix band snugly in position and is most
often positioned... - answer- on the buccal surface of the tooth being restored
The class II restoration requires a matrix band to act as an artificial wall that must make
proper contact with the adjacent tooth; this is accomplished by... - answer- - using a
wedge
- contouring the centre of the matrix band in the proximal contact area
- the dentists design of the inter proximal cavity preparation
The matrix is used for anterior CR or GI restorations... - answer- Clear Plastic
Coronal Polishing is a technique used: - answer- - to remove plaque and stains from
coronal surfaces of the teeth
- before placement of dental sealants and orthodontic bands
- before placement of the dental dam and before acid etching
Patients at high risk for caries or with areas of thin demineralized enamel are
contraindications for coronal polishing - answer- True
Coronal polishing is the complete removal of calculus, debris, stains and plaque from
the teeth - answer- False
Exogenous stains are caused by an environmental source and are classified into
subdivisions, including which of the following: - answer- - Intrinsic stains
- Extrinsic stains
Extrinsic stains can be removed from the teeth by: - answer- - air-powder polishing
- rubber cup polishing
- bristle brushes
The ultrasonic scaler is needed for a coronal polish... - answer- False
Disclosing solution can be used for: - answer- - identifying areas of plaque
- evaluating the effectiveness of the polishing
Teeth with very small initial carious lesions may be sealed, and the bacteria will not
survive under a properly placed sealant - answer- True
, Sealants have been proved an effective way to prevent the development of dental
caries and are indicated: - answer- - through the caries-active period (ages 6-15)
- for teeth with deep pits & fissures
- for some adults
Sealants shouldn't be used in which of the following situations: - answer- - obvious
dental decay or proximal surface decay
- primary teeth that will be lost soon
- poor patient cooperation in the dental chair or lack of pits & fissures
Sealants may vary in: - answer- - method of polymerization
- colour
- whether they contain fillers
A general tip for sealant materials is to store them in a refrigerator: - answer- False
The first step in placing dental sealants is to: - answer- clean the surface
A sealant that is polymerized by chemical reactions is called: - answer- Self-Cured
Self-Cured sealant materials are supplied as a two-part system that includes: - answer-
- a base
- a catalyst
Dental sealants should be used as part of a preventative program that includes: -
answer- - fluorides
- dietary considerations
- plaque control
Enamel that has been etched has the appearance of being: - answer- frosty
Antidepressants are often used in dentistry to alleviate or reduce anxiety and pain -
answer- False
The agents that provide a temporary numbing effect on nerve endings located on the
surface of the oral mucosa are: - answer- Topical Anesthetics
Topical anesthesia is available in the form of: - answer- - ointments & liquids
- sprays
- patches
The most frequently used form of pain control used in dentistry is: - answer- Local
Anesthesia
______ is added to local anesthetic agent to slow down the intake of the agent and
increase the duration of action - answer- Vasoconstrictor
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