All of the following are principal objections to the use of a U-shaped maxillary removable partial denture major connector, except
- its lack of rigidity, compared to other designs, may induce torque or direct lateral force to abutment teeth
- the design fails to provide good support characteristics and may permit impingement of tissues underlying its palatal borders when subjected to occlusal loading
- bulk to enhance rigidity results in increased thickness in areas most frequented by the tongue
- movement is particularly noticeable and is traumatic to the residual ridge in distal extension removable partial dentures when posterior tooth support is nonexistent
- the lack of interfacial surface tension between the metal and tissues reduces the amount of retention of the prosthesis
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