Quiz #1 Key
RPD Components
1) Direct retainer is a component of an
RPD, consisting of a clasp assembly
or dental attachment, that is used to
retain and prevent dislodgement.
2) Which maxillary RPD major connector
represents the greatest mass of
metal? Complete palatal plate
RPD components con’t
3) The component of an RPD that
resembles a lattice or mesh is plastic
retention area.
4) In an edentulous area, what RPD
material is most likely to be used to
replace missing teeth and soft tissue?
Plastic
RPD Biomechanics
5) All RPD’s direct mechanical forces to
which single tissue? Bone
6) Define Retention: Resistance to
vertical dislodgement.
7) Define Stability: Resistance to
horizontal or oblique forces.
RPD Biomechanics con’t
8) Name the Kennedy partially
edentulous classification(s) used for
distal extensions. I and II
9) Buccal shelf and pear-shaped pad are
primary support areas in the
mandible.
Posterior ridge and palate are primary
support areas in the maxilla.
RPD Biomechanics con’t
10)Design considerations that permit
denture base movement are
necessary for tooth mucosa borne
RPDs, compared with tooth borne
RPDs, because tissue displaces 25
times more than teeth, resulting in
movement of denture base around
axes of rotation.