MAXILLARY MAJOR CONNECTORS: -

A. Complete Palate Major Connector
i. Best major connector
ii. Like CD
iii. There is a plate covering the entire plate, this acts as the major connector.
iv. When all post teeth missing, class 1
v. Periodontally compromised remaining teeth,
vi. Shallow vault cases, small mouth, flat or flabby ridges.
vii. Almost anywhere and everywhere

B. Anterior—Posterior Bar
i. Sharp design
ii. Most rigid after complete palate

C. Horse — Shoe
i. Least preferred as it is least rigid
ii. Patient with palatal torus

D. Single palatal bar
a. Posterior palatal bar or strip used with: Kennedy class3.

E. Single palatal strap

F. Unshaped palatal connector

G. Combination of anterior—posterior palatal strap

Maxillary RPD major connectors may be beaded to — produce positive contact with the tissue

All major connectors should cross the midline at a right angle

Q. Refractory cast To fabricate a removable partial casting requires making a second cast of high heat investment material this cast.