SINGLE PATH OF INSERTION
- Equalizes retention on all abutment teeth retentive arms oppose each other on opposite sides of the arch
q Provides bracing and cross arch stabilization of teeth
q Directs forces along the long axes of the tooth
q Allows partial denture to be placed and removed without encountering interferences
q Minimizes torquing forces of the partial denture
q Provides frictional retention from contact of the parallel surfaces of the teeth
ROTATIONAL PATH OF INSERTION
q Permits one portion of the framework to be seated first , followed by the remainder of the framework
q Suitable for tooth bounded edentulous spaces especially for anterior edentulous spaces
Advantages
q Requires minimal number of clasps
q reduces tooth coverage
q decreases plaque accumulation
q Esthetics improved
q Clasps are eliminated
q Closer adaptation around the defects by acrylic
q Abutment tooth preparation is minimal
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