EDDA Certification Test 2026 UPDATED ACTUAL Questions
and CORRECT Answers
, Fulcrum Stabilize the hand piece or instrument
• Prevent injury to soft and hard tissue
• Provide control of an instrument or hand piece
• Can be intraoral, extraoral or broader fulcrum
Grasping the hand pice The handpiece and prophylaxis angle are held in a **modified pen grasp with the
handle resting in the V-shaped area of the hand between the thumb and index
finger
Bristle Brushes Occlusal surface ONLY
Rubber Cup Polishing This is the most common technique for removing stains and plaque and
polishing the teeth
A rubber polishing cup is rotated slowly and carefully by means of a prophylactic
angle attached to the slow-speed handpiece
Air Poslishing ONLY hygienist and dentist
Intrinsic Stains Caused by an environment source
CANNOT be removed
Extrinsic Stains Stain on the exterior surface of the tooth
CAN be removed
Endogenous Stains Originate within the tooth
CANNOT be removed
Exogenous Stains Originate on the outside of the tooth
Selective Polishing • Selective polishing is a procedure in which only those teeth or surfaces with
stain are polished
• The purpose of selective polishing is to avoid removing even small amounts of
surface enamel
• In some individuals, stain removal may cause dentinal hypersensitivity during and
after the appointment
• NEVER polish a newly erupted tooth because the enamel isn't fully mineralized.
Coronal Polishing Coronal polishing is a technique used to remove plaque and stains from the
coronal surfaces of the teeth
• Can be completed by an EDDA, Hygienist or Dentist (NOT dental assistant)
and CORRECT Answers
, Fulcrum Stabilize the hand piece or instrument
• Prevent injury to soft and hard tissue
• Provide control of an instrument or hand piece
• Can be intraoral, extraoral or broader fulcrum
Grasping the hand pice The handpiece and prophylaxis angle are held in a **modified pen grasp with the
handle resting in the V-shaped area of the hand between the thumb and index
finger
Bristle Brushes Occlusal surface ONLY
Rubber Cup Polishing This is the most common technique for removing stains and plaque and
polishing the teeth
A rubber polishing cup is rotated slowly and carefully by means of a prophylactic
angle attached to the slow-speed handpiece
Air Poslishing ONLY hygienist and dentist
Intrinsic Stains Caused by an environment source
CANNOT be removed
Extrinsic Stains Stain on the exterior surface of the tooth
CAN be removed
Endogenous Stains Originate within the tooth
CANNOT be removed
Exogenous Stains Originate on the outside of the tooth
Selective Polishing • Selective polishing is a procedure in which only those teeth or surfaces with
stain are polished
• The purpose of selective polishing is to avoid removing even small amounts of
surface enamel
• In some individuals, stain removal may cause dentinal hypersensitivity during and
after the appointment
• NEVER polish a newly erupted tooth because the enamel isn't fully mineralized.
Coronal Polishing Coronal polishing is a technique used to remove plaque and stains from the
coronal surfaces of the teeth
• Can be completed by an EDDA, Hygienist or Dentist (NOT dental assistant)
