Stabilization principles in removable partial denture design. Indirect retainers. Stabilization principles of removable partial dentures in various Kennedy classes

Question 1

Indirect retainer mechanism of action

Answer 1

• Assist direct retainers in preventing dislodgement of distal extension of denture
• Lever action on opposite side of fulcrum line
• Dislodgement resisted when indirect retainer positioned anterior to fulcrum line

Question 2

Fulcrum line

Answer 2

Imaginary line around which denture rotates