other RPD Flashcards
when should a primary registration be done
if you can’t hand articulate the casts
why should incisal rest seats be avoided
poor aesthetics and more likely to interfere with occlusion
what is an example of an addition silicone
polyvinylsiloxane
impression compound examples
greenstick
purpose of jaw registration
used to ensure teeth height and position between mandible and maxilla are correct
secondary registration
done after design and master impressions
done on complex cases or if errors with primary registration
what are the two methods of recording OVD and RVD
two dot method and willis bite gauge
how is freeway space calculated
RVD - OVD
usually around 2-4mm
retro molar pad
cushioned mass of tissue on alveolar process of mandible distal to last molar
why might a ptx have pain after first inserting a denture
encroachment on renal attachments
overextended
areas causing pressure
why might a ptx experience TMJ or MOM discomfort due to dentures
excessive OVD therefore little or no freeway space , discomfort will worsen the longer the denture is worn for
why might a ptx see deep commissures whilst wearing a denture
insufficient OVD and therefore an excessive amount of freeway space
poses a risk of angular chellitis
