NDAEB PRACTICE EXAM QUESTIONS
WITH VERIFIED ANSWERS. A+ GRADE
2025/2026.
Who was the first woman to graduate from a recognized dental college? - ANS Lucy B.
Hobbs-Taylor
What are the conditions that would indicate the need for restorative dentistry? - 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. - 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? - 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. - ANS True
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
,Class II restorations are found on the.... - ANS Posterior teeth
The usual material of choice for class III and Class IV restorations is ... - ANS Composite Resin
The Class V restoration is classified as a smooth surface filling and can be found on the... -
ANS - incisors
- canines
- premolars
When are retention pins used as a part of the direct restorative process? - 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: - 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? - 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? - ANS Class II, III, and V
The most common matrix system used for class II posterior restorations is the... -
ANS tofflemire retainer and matrix band
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
,The universal/Tofflemire retainer holds the matrix band snugly in position and is most often
positioned... - 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... - 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... - ANS Clear Plastic
Coronal Polishing is a technique used: - 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 - ANS True
Coronal polishing is the complete removal of calculus, debris, stains and plaque from the teeth -
ANS False
Exogenous stains are caused by an environmental source and are classified into subdivisions,
including which of the following: - ANS - Intrinsic stains
- Extrinsic stains
Extrinsic stains can be removed from the teeth by: - ANS - air-powder polishing
- rubber cup polishing
- bristle brushes
The ultrasonic scaler is needed for a coronal polish... - ANS False
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, Disclosing solution can be used for: - 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 - ANS True
Sealants have been proved an effective way to prevent the development of dental caries and
are indicated: - 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: - 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: - ANS - method of polymerization
- colour
- whether they contain fillers
A general tip for sealant materials is to store them in a refrigerator: - ANS False
The first step in placing dental sealants is to: - ANS clean the surface
A sealant that is polymerized by chemical reactions is called: - ANS Self-Cured
Self-Cured sealant materials are supplied as a two-part system that includes: - ANS - a base
- a catalyst
4 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
WITH VERIFIED ANSWERS. A+ GRADE
2025/2026.
Who was the first woman to graduate from a recognized dental college? - ANS Lucy B.
Hobbs-Taylor
What are the conditions that would indicate the need for restorative dentistry? - 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. - 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? - 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. - ANS True
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
,Class II restorations are found on the.... - ANS Posterior teeth
The usual material of choice for class III and Class IV restorations is ... - ANS Composite Resin
The Class V restoration is classified as a smooth surface filling and can be found on the... -
ANS - incisors
- canines
- premolars
When are retention pins used as a part of the direct restorative process? - 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: - 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? - 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? - ANS Class II, III, and V
The most common matrix system used for class II posterior restorations is the... -
ANS tofflemire retainer and matrix band
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
,The universal/Tofflemire retainer holds the matrix band snugly in position and is most often
positioned... - 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... - 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... - ANS Clear Plastic
Coronal Polishing is a technique used: - 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 - ANS True
Coronal polishing is the complete removal of calculus, debris, stains and plaque from the teeth -
ANS False
Exogenous stains are caused by an environmental source and are classified into subdivisions,
including which of the following: - ANS - Intrinsic stains
- Extrinsic stains
Extrinsic stains can be removed from the teeth by: - ANS - air-powder polishing
- rubber cup polishing
- bristle brushes
The ultrasonic scaler is needed for a coronal polish... - ANS False
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, Disclosing solution can be used for: - 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 - ANS True
Sealants have been proved an effective way to prevent the development of dental caries and
are indicated: - 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: - 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: - ANS - method of polymerization
- colour
- whether they contain fillers
A general tip for sealant materials is to store them in a refrigerator: - ANS False
The first step in placing dental sealants is to: - ANS clean the surface
A sealant that is polymerized by chemical reactions is called: - ANS Self-Cured
Self-Cured sealant materials are supplied as a two-part system that includes: - ANS - a base
- a catalyst
4 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
