7. Warm the periphery wax in a warm water bath, insert in patients mouth and mold the periphery wax to the intraoral contours. **Note: the pts existing denture can be used to help select an appropriate size tray. Preliminary Impressions
20. Mix the Syringe Gel using 70 °F water measured to the designated line on the vial. Back load the syringe Replace the plunger and express out any air. Set aside Syringe Gel
21. Mix the Tray Gel using 70 °F water measured to the designated line on the vial. The mix will appear dry at first but do not add additional water. Tray Gel
22. Accu-Dent Maxillary Impression Make sure a small amount of Tray Gel is pushed through the large holes in the tray for retention. Hold the tray under cold running water and smooth the surface with your fingers. The proper shape of the Tray Gel material is very important: most of the material should be in the front sloping to very little in the back. Loading the tray
23. Wipe dry the vestibules and palate with a 2x2 gauge. Express a line of the Syringe Gel into the vestibule from the hamular notch to the midline. Continue from opposite posterior to midline. Do not go all the way around in a single pass. Taking the Impression Accu-Dent Maxillary Impression
24. Taking the Impression Place a small amount of Syringe Gel in the anterior vault of the palate. Seat the tray from front to back. Stop seating the tray when a small amount of Syringe Gel appears in the distal edge of the tray. Accu-Dent Maxillary Impression
25. Pull straight down once on the filtrum at the vermilion border. Massage the cheeks very lightly downward with the fingers. Have the patient open wide Border Molding Accu-Dent Maxillary Impression
26. Tray Removal When set, break the seal at the distal buccal periphery and carefully remove the impression. Using the handle alone to remove the impression might dislodge the material. Disinfect according to OSHA guidelines and immediately pour the model Accu-Dent Maxillary Impression
27. Impression tray acts only as a method of delivering the impression material Accu-Dent Maxillary Impression
29. The lower Accu-Tray selection is accomplished in two steps, 1) tray type and 2) tray size Chose the tray that best suits either a normal ridge, or a highly resorbed ridge. Trays # 26-30 are designed with a moderate distal rise to accommodate the moderately resorbed ridge . Trays #20-24 are designed with a high distal rise to help accommodate the severely resorbed ridge . Accu-Dent Mandibular Impression Tray Type Tray Selection
30. Use the supplied calipers to measure the width of the residual ridge in the first molar region. This can be done on the existing denture, as shown, or in the patients mouth. Use this measurement to select the correct size lower tray. The caliper measurement should line up with the large holes in the first molar region of the lower tray. When in doubt use a smaller tray. Accu-Dent Mandibular Impression Tray Size Tray Selection
31. Mix the Syringe Gel using 70 °F water measured to the designated line on the vial. Back load the syringe Replace the plunger and express out any air. Set aside Syringe Gel
32. Mix the Tray Gel using 70 °F water measured to the designated line on the vial. The mix will appear dry at first but do not add additional water. Tray Gel
33. Mix the Tray Gel and place half on each side of the tray. Make sure that some of the tray material is pushed through the holes. This is the correct shape of the loaded tray. More material should be in the posterior of the tray. Give the Tray Gel a surface wash and rub smooth under cold running water with your fingers. Accu-Dent Mandibular Impression Loading the Tray
34. Express Syringe Gel from the retromolar pad forward to the midline. Repeat on the other side of the arch. It is not necessary to place Syringe Gel into the lingual vestibules. Place tray front to back until Syringe Gel appears in the posterior of the tray. Have the patient bring their tongue forward as you rotate the tray backward into position. When the Tray Gel rises up in the distal, Stop. Accu-Dent Mandibular Impression Taking the Impression
35.
Notas do Editor
Accu-dent System 1 has been formulated to meet the challenges of taking an impression of the edentulous mouth. The tray gel has very heavy viscosity that gives it the necessary body to reach into the sulcular areas without slumping. The syringe gel has a much less viscosity and therefore is capable of accurately recorded the tissue surface. In addition the specially designed impression trays and the unique delivery syringe complete the system.
This photo emphases how the accu-dent system works. Note that the impression tray is a significant distance from the peripheral border. This is possible due to the extra body of the tray material. Conventional alginate would require the impression tray to be seated further in order to support the material from slumping. By not having to overseat the tray Accu-dent gel is able to physiologically record the denture borders with the distortion that an overseated tray would create.