Question 87 · LDEK · Dental laboratory technology
Streaks and discolorations of acrylic material occurring in removable dentures result from the errors in heat-polymerization such as:
- A. using too little amount of monomer and pigment sedimentation.
- B. using too little amount of monomer and short-term polymerization.
- C. too short initial polymerization phase.
- D. short-term heat-polymerization.
- E. pigment sedimentation and deflasking the denture from the hot flask.
Hint
Streaks and colour patches indicate an inhomogeneous dough — think about mixing proportions and pigment distribution rather than curing time.
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