MN Licensure Exam Study Questions and Answers Top Graded 2024

Describe the motion/pressure when preforming a mechanical polish. - A quick light to moderate pressure should be used. on slow speed pushing gently and overlapped. What part of the rubber cup does the polishing? - THE OUTER EDGE DOES THE POLISHING If a line of stain or deposits appear along the gingival margin after polishing, the problem was? - the prophy cup was not flexed or adapted to the tooth. The stroke used to polish a tooth is from the ---- third to the --- edge. - gingival third to the incisal edge A mechanical polish removes what deposits and stains? - All soft deposits and extrinsic exogenous stains List the objectives of a mechanical polish? - Creates smooth surfaces easier for patient cleaning, all soft deposits extrinsic stains removed, contributes to pt. motivation. What does excessive speed during a mechanical polish cause? - Abrasion and tramuatic frictional heat List other factors that increase the rate of abrasion? - Dry Coarse Polishing Agent, irregular particles in polish, larger particles, Grit, Number of particles, Amount of pressure and speed Why is unwaxed floss preferred? - May spread out more How would you remove heavy stains? - Scaling (and/or) root planing (Cannot be done by LDA) RDA would use a higher grit polishing paste Define characteristics of tissue abrasion from an incorrect placement of a rubber cup. - Red tissue and hurting Describe the movement of the hand to adapt the cup to the tooth when polishing. - Use short overlapping, intermittent motions or stroking, lifting, wiping motion with wrist rotation Give characteristics or a description of how you would explain a mechanical polish to a new patient that is 3-4 years old. - Show, Tell in a way they will understand, let them Feel like prophy cup on finger, and use imagination What is used interproximally with an abrasive to remove stains? - Dental Floss, Tape To polish place abrasive on contact areas between teeth and work floss/tape into contacts Which stain is being described? Occurs in patient with poor oral hygiene where plaque collects - Brown and Yellow Stain Which stain is being described? Located on the cervical 1/3 of the maxillary anterior labials - Green Stain ( Light to Yellowish) Which stain is being described? Follows contour of gingival 1 mm of maxillary anterior labials - Green Stain (Light to yellowish) Which stain is being described? Gummy and is found on lingual of anterior teeth - Tobacco Stain Which stain is being described? Intrinsic, grayish brown and caused by an antibiotic. - Tetracycline When is wax floss used? - When stronger floss is needed Contact prior to RD (Rubber Dam) placement For flossing and polishing interproximally What abrasive removes tenacious heavy stain? (tobacco) - Silex What is pumice used for? - Removes persistent stains (not used on solid/resin) no fluoride is in it What is zirconium silicate used for? - Cleans/polishes enamel, used on root surfaces, crowns What is Whiting used for? - Polishes dentures (precipated Chalc) What is tin oxide used for? - Polishing teeth and metallic restorations (fine white powder) Which abrasives remove heavy stains? - Silex and Pumice Which abrasives would be used after flour of pumice to leave the surface smooth and shiny? - Tin Oxide or Zirconium Silicate