RPD Review Questions
A mandibular lingual bar major connector such as the one shown in the RPD to the right requires a minimum of _____mm of vertical height between the gingival margin and the floor of the mouth.
The presence of mandibular lingual tori would indicate the need for
a metal base
extra indirect retainers
The illustration to the right shows a framework for a mandibular class II RPD. The indirect retainer on tooth 21 functions when
the patient chews on something hard
the patient chews on something soft
the patient chews on something sticky
the patient bites the bullet
True or False
An anterior-posterior palatal strap maxillary major connector has greater strength and rigidity than a horseshoe design.
Your patient has the mandibular arch form shown to the right. A rest on which tooth would be the most effective indirect retainer?
Your patient exhibits the mandibular class II modification 1 arch shown to the right. Tooth #30 is tilted mesiolinguallly and has very little tissue undercut on the lingual. What is the best clasp for this situation?
Cast circumferential clasp utilizing a distolingual undercut
Cast I-bar utilizing a mesiolingual undercut
Cast ring clasp utilizing a mesiolingual undercut
Wrought wire circumferential clasp utilizing a distolingual undercut.
Rigid metal retention is associated with
a dual path of insertion
a class IV RPD
the need for excellent esthetics
all of the above
True or False
The palatal strap maxillary major connector is primarily used in short span maxillary class III modification 1 RPDs.
Your patient has the class I arch shown to the right. The axis of rotation is most frequently determined by:
the placement (location) of the primary rests
the type of clasp arms selected
the placement of the minor connectors
the placement of the indirect retainers
In maxillary RPDs, the bead line is approximately _______mm thick (deep).