Question 217 (part 2) · LDEK · Impressions and impression materials
Common reason for dropping off the individual tray is tension of pterygomandibular ligament. To prevent this, it is necessary to correct the tray in the area of:
- A. only first molar.
- B. beyond the maxillary tuberosity.
- C. vestibularly from the second to first premolar.
- D. labially from canine to canine.
- E. lingually from retromolar triangles to the area of first molars.
Hint
Locate the pterygomandibular raphe: it runs from the pterygoid hamulus to the mandible behind the last molar.
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