75. Tooth position and modelling of surfaces are
done in such a way that the denture can be
functionally inserted without interfering with the
balance of tongue , cheeks and lip muscles
Herbert Frick ICDE
86. Advantages of injecting plastic
High impact heat curing polymer
Compensation of polymerization shrinkage
No raised bites
No porosities
Excellent bond to denture teeth (PMMA)
Homogeneous qualitiy of the material
Herbert Frick ICDE
87. Benefit of injecting plastic
Spherical Deformation of Acrylic During Conventional
Processing
Herbert Frick ICDE
Conventional plastic
is susceptible to
chemical shrinkage
during processing
which creates
dimensional
instability (warpage,
shrinkage) and
movement of teeth
88. Upper and lower wax dentures in
injection flasks
Herbert Frick ICDE