Question 76 · LDEK · Fixed restorations
The retention of fixed partial dentures depends on the convergence angle of the prepared teeth. The optimal inclination of the walls amounts to 0.5-0.6mm. That corresponds with the value of:
- A. 5º - 10º.
- B. 5º - 6º.
- C. 4º - 13º.
- D. 10º - 15º.
- E. 10º - 20º.
Hint
Convert a wall inclination of about 0.5-0.6 mm over a typical abutment height into an angle with simple trigonometry.
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