NDAEB Exam Practice Questions with 100% Verified Correct Answers Latest Updated 2024/2025 Who was the first woman to graduate from a recognized dental college? - Correct Answer Lucy B.Hobbs-Taylor What are the conditions that would indicate the need for restorative dentistry? - Correct Answer - initial or recurring decay
- replacement or failed restorations
- abrasion or wearing away of tooth structure
- outline, resistance, retention, convenience form
- final preparation
- canines
- premolars 1 / 4
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. - Correct 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? - Correct Answer - initial preparation
Responsibilities of the dental assistant in the restorative process can include performing expanded function and maintaining patient control. - Correct Answer True Class II restorations are found on the.... - Correct Answer Posterior teeth The usual material of choice for class III and Class IV restorations is ... - Correct Answer Composite Resin The Class V restoration is classified as a smooth surface filling and can be found on the... - Correct Answer - incisors
When are retention pins used as a part of the direct restorative process? - Correct 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
- closing a diastema
- improving alignment of teeth
- Correct Answer on the buccal surface of the tooth being restored
- contouring the centre of the matrix band in the proximal contact area
- the dentists design of the inter proximal cavity preparation
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: - Correct Answer - improving appearance of teeth that are abraded, eroded or discoloured
When is tooth whitening or vital bleaching not indicated for a dental patient? - Correct 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? - Correct Answer Class II, III, and V The most common matrix system used for class II posterior restorations is the... - Correct Answer tofflemire retainer and matrix band The universal/Tofflemire retainer holds the matrix band snugly in position and is most often positioned...
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... - Correct Answer - using a wedge
The matrix is used for anterior CR or GI restorations... - Correct Answer Clear Plastic 2 / 4
Coronal Polishing is a technique used: - Correct 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 - Correct Answer True Coronal polishing is the complete removal of calculus, debris, stains and plaque from the teeth - Correct Answer False Exogenous stains are caused by an environmental source and are classified into subdivisions, including
which of the following: - Correct Answer - Intrinsic stains
- Extrinsic stains
- rubber cup polishing
- bristle brushes
- evaluating the effectiveness of the polishing
Extrinsic stains can be removed from the teeth by: - Correct Answer - air-powder polishing
The ultrasonic scaler is needed for a coronal polish... - Correct Answer False Disclosing solution can be used for: - Correct Answer - identifying areas of plaque
Teeth with very small initial carious lesions may be sealed, and the bacteria will not survive under a properly placed sealant - Correct Answer True Sealants have been proved an effective way to prevent the development of dental caries and are
indicated: - Correct Answer - through the caries-active period (ages 6-15)
- for teeth with deep pits & fissures
- for some adults 3 / 4
Sealants shouldn't be used in which of the following situations: - Correct 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: - Correct Answer - method of polymerization
- colour
- whether they contain fillers
- a catalyst
- dietary considerations
- plaque control
- / 4
A general tip for sealant materials is to store them in a refrigerator: - Correct Answer False The first step in placing dental sealants is to: - Correct Answer clean the surface A sealant that is polymerized by chemical reactions is called: - Correct Answer Self-Cured Self-Cured sealant materials are supplied as a two-part system that includes: - Correct Answer - a base
Dental sealants should be used as part of a preventative program that includes: - Correct Answer - fluorides
Enamel that has been etched has the appearance of being: - Correct Answer frosty Antidepressants are often used in dentistry to alleviate or reduce anxiety and pain - Correct Answer False