NDAEB Practice Questions with 100% Complete Solutions, Rated A+

Who was the first woman to graduate from a recognized dental college? - Lucy B. Hobbs-Taylor What are the conditions that would indicate the need for restorative dentistry? - - 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. - 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? - - 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. - True Class II restorations are found on the.... - Posterior teeth The usual material of choice for class III and Class IV restorations is ... - Composite Resin The Class V restoration is classified as a smooth surface filling and can be found on the... - - incisors - canines - premolars When are retention pins used as a part of the direct restorative process? - - 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: - - 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? - 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? - Class II, III, and V The most common matrix system used for class II posterior restorations is the... - tofflemire retainer and matrix band The universal/Tofflemire retainer holds the matrix band snugly in position and is most often positioned... - 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... - - 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... - Clear Plastic Coronal Polishing is a technique used: - - 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 - True Coronal polishing is the complete removal of calculus, debris, stains and plaque from the teeth - False Exogenous stains are caused by an environmental source and are classified into subdivisions, including which of the following: - - Intrinsic stains - Extrinsic stains Extrinsic stains can be removed from the teeth by: - - air-powder polishing - rubber cup polishing - bristle brushes