Impression procedures for removable partial dentures

TYPES OF IMPRESSION

SUPPORT OF DISTAL EXTENSION BASED PARTIAL DENTURE

ACCORDING TO THE METHOD OF IMPRESSION MAKING

ANATOMIC FORM

FUNCTIONAL FORM

Class III vs Class I & II

Factors influencing support from distal extension bases

(factors influencing the amount of tissue displacement)

Impression. for Dis. Ex. R.P.D.

1. At the impression. stage

Disadvantages

Impression. for Dis. Ex. R.P.D

2. At the framework stage:

Altered Cast Technique

Impression Technique

No Pressure Over Tray

Remove & Inspect Impression

Lab Steps

Potential Problems with the Altered Cast Technique

Impression. for Dis. Ex. R.P.D.

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