RPDs Flashcards
what are the 3 options of framework and trial insertions
framework only
framework with record blocks
framework with tooth trial in wax ‘dress rehearsal’
what sulcus depth is needed for gingivally approaching clasps
at least 7mm
CoCr minimum clasp length
15mm
stainless steel minimum clasp length
7mm
acker clasp
occlusally approachinng clasp
what are 3 common gingivally approaching clasps
I bar
T bar
Half T
all look like what they are called
CoCr undercut depth required
0.25mm
stainless steel undercut depth required
0.75mm
gold undercut depth required
0.75mm
what depth of clearance is needed to use a lingual bar
8mm
diastema
gap/space between 2 teeth
two dot method of recording OVD/ RVD
- mark 2 dots on nose and chin
- use dividers to measure the distance between dots
willis bit gauge method of recording OVD/RVD
- teeth is desired position
- fixed arm placed nasio-labial (below nose)
- sliding arm under chin
- distance between arm = ovd / rvd
ala tragus line and its significance to RPDs
from tragus of ear to ala of nose
occlusal plane of posterior teeth roughly parallel to this
dento facial midline
midline of face coincides with space inbetween central incisors in many people
