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Staining and removal Hygiene 2011-2013 Test

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5 Written Questions

5 Matching Questions

  1. Extrinsic staining is caused by
  2. Name the Rotary equipment used for polishing
  3. Intrinsic staining
  4. What is the Handpiece grasp used in polishing
  5. How would you avoid over production of saliva during polishing
  1. a Substances such as:-
    * Tobacco
    * Coffee
    * Tea
    * Red wine
    * Certain drugs
    * Chromogenic bacteria
  2. b 1) Start on the upper buccal then upper palatal

    2) Then lower buccal then lingual

    * Flavours influence production of saliva
    * Use a thin layer on the teeth
  3. c * An internal discolouration - incorporated into the enamel

    * These stains cannot be removed by scaling or polishing
  4. d 1) Polishing cups:-
    2) Prophylaxis angle:-
  5. e 1) Modified pen grasp with the handpiece resting in the v shape area of the hand between the thumb and the index finger

    2) This is important as the weight & balance of the hand piece can cause hand and wrist fatigue & possible trauma

    3) Fulcrum finger rest for stability

5 Multiple Choice Questions

  1. Use a tissue or gauze to avoid injury to youself
  2. 1) The teeth should be glossy & reflect light from the mirror uniformly

    2) There should be no evidence of trauma to the gingival margins or any other soft tissues in the mouth
  3. * Rotated slowly & carefully
    by a prophy angle attached to the slow handpiece
  4. 1) To remove any abrasive agent or debris that may be lodged in the contact area

    2) A floss threader can be used to pass the floss under any fixed bridgework to gain access to the abutment teeth
  5. 1) Natural or synthetic materials

    2) Remove stains from deep pits and fissures of the enamel surfaces

    3) can cause severe gingival lacerations and must be used with special care

    4) Brushes are not recommended for use on exposed cementum or dentine as these surfaces are soft and are easily grooved

5 True/False Questions

  1. Abrasive polishing pastes* Used to remove stain & to polish natural teeth. prosthetics appliances, restorations & casting

          

  2. Extrinsic staining* Occurs on the external (top) of the teeth and may be removed by scaling &/ or polishing

          

  3. Definition of polishing* An internal discolouration - incorporated into the enamel

    * These stains cannot be removed by scaling or polishing

          

  4. Patient instructions* An internal discolouration - incorporated into the enamel

    * These stains cannot be removed by scaling or polishing

          

  5. What are the Factors that influence rate of abrasion* 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

          

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