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NDAEB – Practice Questions With Correct Solutions
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NDAEB – Practice Questions With Correct Solutions
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NDAEB – Practice Questions With Correct SolutionsWho was the first woman to graduate from a recognized dental college?
Right Ans - Lucy B. Hobbs-Taylor
What are the conditions that would indicate the need for restorative
dentistry? Right Ans - - 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. Right Ans - 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?
Right Ans - - 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. Right Ans -
True
Class II restorations are found on the.... Right Ans - Posterior teeth
The usual material of choice for class III and Class IV restorations is ... Right
Ans - Composite Resin
The Class V restoration is classified as a smooth surface filling and can be
found on the... Right Ans - - incisors
- canines
- premolars
When are retention pins used as a part of the direct restorative process?
Right Ans - - 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: Right Ans - - 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?
Right Ans - 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? Right Ans - Class II, III, and V
The most common matrix system used for class II posterior restorations is
the... Right Ans - tofflemire retainer and matrix band
The universal/Tofflemire retainer holds the matrix band snugly in position
and is most often positioned... Right Ans - 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...
Right Ans - - 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... Right Ans - Clear
Plastic
Coronal Polishing is a technique used: Right Ans - - 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 Right Ans - True
Coronal polishing is the complete removal of calculus, debris, stains and
plaque from the teeth Right Ans - False
Exogenous stains are caused by an environmental source and are classified
into subdivisions, including which of the following: Right Ans - - Intrinsic
stains
- Extrinsic stains
Extrinsic stains can be removed from the teeth by: Right Ans - - air-powder
polishing
- rubber cup polishing
- bristle brushes
The ultrasonic scaler is needed for a coronal polish... Right Ans - False
Disclosing solution can be used for: Right Ans - - 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 Right Ans - True
Sealants have been proved an effective way to prevent the development of
dental caries and are indicated: Right Ans - - 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: Right Ans -
- 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: Right Ans - - method of polymerization
- colour
- whether they contain fillers
, A general tip for sealant materials is to store them in a refrigerator: Right
Ans - False
The first step in placing dental sealants is to: Right Ans - clean the surface
A sealant that is polymerized by chemical reactions is called: Right Ans -
Self-Cured
Self-Cured sealant materials are supplied as a two-part system that includes:
Right Ans - - a base
- a catalyst
Dental sealants should be used as part of a preventative program that
includes: Right Ans - - fluorides
- dietary considerations
- plaque control
Enamel that has been etched has the appearance of being: Right Ans -
frosty
Antidepressants are often used in dentistry to alleviate or reduce anxiety and
pain Right Ans - False
The agents that provide a temporary numbing effect on nerve endings located
on the surface of the oral mucosa are: Right Ans - Topical Anesthetics
Topical anesthesia is available in the form of: Right Ans - - ointments &
liquids
- sprays
- patches
The most frequently used form of pain control used in dentistry is: Right
Ans - Local Anesthesia
______ is added to local anesthetic agent to slow down the intake of the agent
and increase the duration of action Right Ans - Vasoconstrictor
The ____ the ratio, the higher the percentage of vasoconstrictor in the
anesthetic agent Right Ans - Smaller
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