Kader Kashani

Question 1

Kennedy classification

Class 1
Class 2
Class 3
Class 4

Answer 1

Class 1- bilateral free ended saddles
Class 2- unilateral free ended saddle
Class 3- unilateral bounded saddle
Class 4- single anterior bilateral bounded saddle

Question 2

Saddle

Support

Retention
-Direct retention

Answer 2

Saddle- the component which rests on and covers edentulous areas and carries artificial teeth

Support- components that provide resistance to vertical forces directed towards the mucosa

Retention- resists displacement of denture

• direct retention = clasps
  
  • resist forces that act to displace denture away from tissues

Question 3

Abutment tooth

Survey line

Reciprocation

Answer 3

Abutment tooth- tooth adjacent to saddle that may be used for support

Survey line- position of maximum convexity on a tooth in relation to the path of insertion in which clasp engages below

Reciprocation- resists horizontal force applied to tooth when clasp displaced over survey line to prevent tooth moving within PD space

Question 4

Fulcrum axis

Guide planes

Answer 4

Fulcrum axis- axis around which a tooth and mucosa Bourne denture tends to rock when saddles are loaded

Guide planes- two or more parallel surfaces on abutment teeth used to limit the path of insertion and improve retention and stability