Prosthodontics & Occlusion · single question
What is the PRIMARY PURPOSE of a non-rigid (stress-breaking) connector in a fixed partial denture?
Show answer and explanation
Correct answer: C. Stress distribution to prevent torquing of abutment teeth
Non-rigid connectors allow independent movement between bridge components, preventing torquing forces on abutment teeth.
- A. Esthetics are determined by materials and form, not connector type.
- B. Retention is provided by crown preparations and luting cement — not by connector type.
- C. CORRECT. The primary purpose of a non-rigid connector is stress-breaking: allowing differential movement between abutment teeth, protecting those with different mobility patterns from torquing forces that would be transmitted through a rigid connector.
- D. Occlusal stability is provided by crown morphology and occlusal design, not connector rigidity.
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