REMOVABLE PARTIAL DENTURE

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Guiding plane: Two or more parallel vertical surfaces of abutment teeth, so shaped to direct prosthesis during placement and removal.

 

As a rule of thumb proximal guiding plane surfaces should be about as wide as the difference between the lips of the adjacent buccal and lingual cusps and should extend vertically about 2/3rd the length of the ‘Enamel Crown’ portion of the tooth from the marginal ridge cervical

 

Factors which determine the path of placement and removal of a removable partial denture are:

  • Guiding planes
  • Retentive areas /undercuts
  • Areas of interference
  • Aesthetics

 

Distribution of forces acting on partial denture between soft tissue and teeth case be done by:

  • Stress equalization.
  • Physiologic basing.
  • Broad stress distribution.

 

Masseter has a dual function relating to CD.

Encroachment of freeway space causes reversible soft tissue and irrevers­ible hard tissue damage.

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