Extraction Techniques

Question 1

How do elevators work?

Answer 1

The corners of the instrument engage with the tooth

Question 2

What are Cryer’s elevators useful for?

Answer 2

• removal of retained root
  
  • placed in socket
  • break bone where necessary
  • engage in root and elevate

Question 3

What are Warwick James elevators useful for?

Answer 3

• wisdom tooth elevation
  
  • straight good for lower due to narrow gap
  • left and right good for upper, requires less stretching

Question 4

What is the function of a luxator?

Answer 4

• used to sever the periodontal ligament
  
  • sharpened curved edge

Question 5

What is a periotome?

Answer 5

• flattened, sharpened probe
  
  • cuts periodontal ligament
  • long process but can be atraumatic
  • useful if placing immediate implants

Question 6

What are the three basic modes of action for tooth elevation?

Answer 6

• wheel and axle
  
  • rotation
• lever
  
  • considerable force exerted on bone
• wedge
  
  • can be seen with locator use
  • only works if very little PDL and bone

Question 7

What are the most common points of application for elevators?

Answer 7

• mesial
• buccal

Question 8

What points of application not recommended for extraction?

Answer 8

• distal
  
  • cheek requires considerable stretching
• superior/inferior
  
  • significant parts of buccal plate removed
  • raise buccal flap, drill hole at apex and engage
• mesial and distal
  
  • never used
  • forces applied at same time
  • patient’s jaw cannot be supported with non-dominant hand

Question 8

Why are other points of application not recommended?

Answer 8

• distal
  
  • cheek requires considerable stretching
• superior/inferior
  
  • significant parts of buccal plate removed
  • raise buccal flap, drill hole at apex and engage
• mesial and distal
  
  • never used
  • forces applied at same time
  • patient’s jaw cannot be supported with non-dominant hand