question 29

Question 1

dental dam

Answer 1

• Make sure to read brief and isolate the correct tooth!!
• Single tooth isolation, multiple tooth isolation or split dam technique
• Floss ligatures and wedjets
• Clamps
  o Winged – inserted into dam and applied together
  o Wingless – clamp placed and dam brought over clamp
  o Remember to floss through both holes of clamp when placing to protect airway – avoid bow of clamp as this will be difficult to remove and act as a wick for saliva
  o Anteriors – C or E
  o Premolars – E or EW
  o Molars – A, AW, FW or K
• Punch, frame, clamp forceps
• For posterior teeth punch largest single hole 2cm diagonally from the centre of the dam sheet and turn to appropriate quadrant
• For anterior teeth the hole may be punched more peripherally, to ensure the dam doesn’t cover the patient’s nose
  o Scissors can be used to trim the sheet if necessary
• Oraseal caulking agent or OpalDam – provide appropriate peripheral seal
• Seal can be checked with CHX MW
• Remember to ease dam off wings with flat plastic and floss contacts to ensure a good seal
• Marks given for operating posture (adjust chair, patients height, light), correct clamp selection, correct clamp orientation and frame positioning (covers upper lip but not nose)

Question 2

Answer 2