RPD Review Questions

Answer to Question #109


The correct answer is

Incorrect. When the patient bites down on the extension base, the I-bar should RELEASE. It should only function when there is an attempt to dislodge the RPD, i.e. move it away from the basal seat.

Correct. The retentive arm should be activated when dislodging forces attempt to unseat the RPD---movement away from the basal seat.

Incorrect. The retentive arm should be activated when dislodging forces attempt to unseat the RPD---movement away from the basal seat.

Incorrect. The retentive arm should be activated when dislodging forces attempt to unseat the RPD---movement away from the basal seat.