RPD Review Questions

Answer to Question #112

The correct answer is

Incorrect. The breadth of the edentulous spaces are too small to use an A-P strap. The opening would almost surely be less than the minimum 15 mm required.

Incorrect. In general, a horse-shoe major connector is undesirable because it lacks rigidity unless quite bulky. It is only used to circumvent large inoperable tori or when the patient is a big-time gagger. Neither of these circumstances are mentioned in the question stem.

Incorrect. A modified palatal plate is used for maxillary class II RPDs.

Correct. The A-P dimension is small, the residual ridges are good, and the abutments are strong---all indications for a palatal strap major connector.