Category: Impression Trays
Material: Reinforced lastic
Sizes: Medium and Large
Autoclavable up to 135°C
 

• 3 x Medium tray
• 3 x Large tray

1. Tray Selection:

   • Choose the tray size (Medium or Large) based on the residual alveolar ridge size.
   • Ensure the lingual wing extends to the posterior end of the retromolar pad. Modify the tray shape if needed for proper fit.

2. Trial Insertion:

   • Seat the tray in the patient’s mouth and ask them to rest their tongue on the tray.
   • Have the patient close their mouth slowly to bite the tray handle and remain relaxed.

3. Mark Tray Position:

   • Mark the tray handle position and instruct the patient to repeat the same motion after the impression material is applied.

4. Prepare Impression Material:

   • Mix alginate with water at 1.5 times the normal ratio.
   • Simultaneously, mix alginate in another bowl with water in the standard ratio.

5. Inject Impression Material:

   • Load alginate of thinner consistency into a syringe and apply it around teeth and critical areas.

6. Apply Material to Tray:

   • Load the other alginate mixed onto the tray, ensuring coverage of the frameless areas like the retromolar pad.

7. Impression Taking:

   • Insert the tray into the patient’s mouth, matching the anterior ridge first, then the tray wings into the retromylohyoid fossa.
   • Advise the patient to lightly press their tongue upward and avoid applying strong pressure.

8. Confirm Tray Position:

   • Ensure the tray aligns with the marked position, and the patient bites the handle properly.

9. Pressure Application:

   • Stand behind the patient and gently press the buccal shelf upward using the palms to prevent excess material buildup.

10. Impression Removal:

    • Once the material has hardened, carefully remove the impression. The retromolar pad and posterior margin should be well-defined.

11. Verify Impression:

    • Check the impression for accuracy, ensuring all critical areas are captured.

12. Cast Preparation:

    • Pour the cast model and verify the details for further procedures.

This method ensures minimal air entrapment and delivers high-quality mandibular impressions.