DASLE MN State Exam Questions and Answers 100% Correct

DASLE MN State Exam Questions and Answers 100% Correct Clinical Crown - Correct Answer ️️ -That portion of the tooth that is visible in the oral cavity Oral prophylaxis - Correct Answer ️️ -The complete removal of calculus, debris, stain, and plaque from the teeth. DH and DDS allowed Selective Polishing - Correct Answer ️️ -a procedure in which only those teeth or surfaces with stain are polished Purpose is to avoid unnecessary removal of even small amounts of surface enamel Indications for Coronal Polishing - Correct Answer ️️ -- Before placement of dental sealants - Before placement of dental dam - Before cementation of orthodontic bands - before cementation of crowns and bridges - before application of acid etching solution (if indicated by manufacturer) Contraindications for Coronal Polishing - Correct Answer ️️ -- when no stains are present - patients who are high risk for dental caries (ex: bottle caries, root caries, thin demineralization enamel) - sensitive teeth - newly erupted teeth B/C mineralization of tooth surface maybe incomplete Endogenous stains - Correct Answer ️️ -Stains developed from within the structure of the tooth Example: Excessive amount of fluoride during tooth formation, medications taken by the mother or the child during tooth development (Tetracycline) CANNOT be removed by polishing Exogenous Stain - Correct Answer ️️ -originates from sources outside the tooth and are caused by environmental agents. Extrinsic Stain - Correct Answer ️️ -appear on the exterior of the tooth, and CAN be removed by polishing Examples: Food, Drink, Tobacco Intrinsic Stain - Correct Answer ️️ -Caused by environmental agents but CANNOT be removed because the stain has become incorporated into the structure of the tooth. Examples: Amalgam tattoo, smoking, chewing, or dipping Extrinsic Stain Examples - Correct Answer ️️ -black stain, brown stain, yellow stain, tobacco stain, green stain, dental plaque agents, food and drink, Nasmyth's membrane Intrinsic Stain Examples - Correct Answer ️️ -Pulpless teeth, Tetracycline antibiotics, dental fluorosis, imperfect tooth development, silver amalgam Two methods of stain removal - Correct Answer ️️ -Air-powder polishing and rubber cup polishing Rubber cup polishing - Correct Answer ️️ -A technique that is used to remove plaque and stains from the coronal surfaces of the teeth. Most common Polishing cups - Correct Answer ️️ -Soft, webbed polishing cups are used to clean and polish the smooth surfaces of the teeth. Bristle Brushes - Correct Answer ️️ -made from either natural or synthetic materials, may be used to remove stains from deep pits and fissures of the enamel surfaces Grasping the handpiece - Correct Answer ️️ -Pen grasp fulcrum - Correct Answer ️️ -provides stability for the operator and must be placed in such a way to allow movement of the wrist and forearm. Abrasives (cleaning and polishing agents) - Correct Answer ️️ -extra coarse, coarse, medium, fine, extra fine the coarser the agent, the greater is the abrasion to the surface What prophy paste is not recommended for esthetic restorations? - Correct Answer ️️ - regular prophy paste Low-abrasive pastes such as micron-fine sapphire or diamond paste or aluminum oxide paste should be used for restorations. Factors that influence the rate of abrasion - Correct Answer ️️ -The more agent used, the greater the degree of abrasion. The lighter the pressure, the less abrasion. The slower the rotation of the cup, the less abrasion. Sequence of Polishing - Correct Answer ️️ -Aesthetic and porcelain restorations should be polished first Operators preference flossing after polishing - Correct Answer ️️ -polish the inter proximal tooth surfaces and remove any abrasive agent or debris that may be lodged in the contact area Evaluation of polishing - Correct Answer ️️ --after tooth surfaces have been dried with air, no disclosing agent remains, -teeth are glossy and reflect light from the mirror -no evidence of trauma to the gingival margins or to any other soft tissues Topical Anesthetic - Correct Answer ️️ -provides a temporary numbing effect on nerve endings located on the surface of the oral mucosa Active ingredients in topical medications - Correct Answer ️️ -benzocain