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Removable
tissue displacement
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<blockquote data-quote="denturist-student" data-source="post: 225453" data-attributes="member: 5492"><p>I might treatment plan something like this.....1 Preliminary impressions use injected alginates in two stages and take a rough bite with intraoral putty after sawing off the handles and take a tongue depressor and measure the resting and occluding bites so you can adjust the articulator when you make your rims ( dentist can place some cursory markings on the putty)., 2 Secondary impressions on a bite registration rim with the upper six anteriors set up. Called an esthetic try in...(dentist can reposition them at his will factoring in phonetic and esthetic considerstaions), redo the bite registration here a pin tracer and facebow can be easily incorporated.and take about 5 extra minutes to do......3 Full try in with a final impression using light body wash, If they have poor ridges, then use Ivoclar or Candulour Lingoform teeth against a flat tooth such as Bioform or Ivoclar 0 degree setup on a compensating curve (set lowers first either on the ridge or as per neutral zone impressions if they exist). Return to lab for preliminary processing....4 Use a reline jig to keep the occlusion intact but make an impression of intaglio surface of denture using stone or putty on the reline jig and then hollow out the intaglio surface of the denture by about 1-2 mm, do this for both upper and lower dentures.....5 Use either Tempo, COEsoft, or Hydrocast ( with a microseal base) to reline temporarily in the clinic using the reline jig for the patient to wear for 2-5 days......You will be amazed at the quality of the reline impressions you get using the reline jig......without using the reline jig you may lose the bite you worked hard to obtain originally....Process the reline and insert....</p><p>It takes a few extra steps but it can allow for some margin for errors and each step gets progressively refined...</p><p>There is soooo much to do clinically though and unfortunately few dentists have the time to dedicate to precision and steps cannot be missed.</p><p>Massads technique goes a bit beyond this by using a neutral zone and external impressions....Turbyfills actually uses the phonetic placement of the upper anterior teeth and then he fabricates an upper denture against a processed bite rim and looks for lingualized points as well as he uses hydrocast for a functional impression material.....</p><p>I have used both methods which have different properties and results successfully....I have also adapted both of those concepts into my own protocol but few in my patient base cannot tolerate so much work so I occasionally use the existing dentures as an informal bite registration and impression tray....but that has its disadvantages too.</p><p>Anyways take care and keep well....once a student always a student</p></blockquote><p></p>
[QUOTE="denturist-student, post: 225453, member: 5492"] I might treatment plan something like this.....1 Preliminary impressions use injected alginates in two stages and take a rough bite with intraoral putty after sawing off the handles and take a tongue depressor and measure the resting and occluding bites so you can adjust the articulator when you make your rims ( dentist can place some cursory markings on the putty)., 2 Secondary impressions on a bite registration rim with the upper six anteriors set up. Called an esthetic try in...(dentist can reposition them at his will factoring in phonetic and esthetic considerstaions),redo the bite registration here a pin tracer and facebow can be easily incorporated.and take about 5 extra minutes to do......3 Full try in with a final impression using light body wash, If they have poor ridges, then use Ivoclar or Candulour Lingoform teeth against a flat tooth such as Bioform or Ivoclar 0 degree setup on a compensating curve (set lowers first either on the ridge or as per neutral zone impressions if they exist). Return to lab for preliminary processing....4 Use a reline jig to keep the occlusion intact but make an impression of intaglio surface of denture using stone or putty on the reline jig and then hollow out the intaglio surface of the denture by about 1-2 mm, do this for both upper and lower dentures.....5 Use either Tempo, COEsoft, or Hydrocast ( with a microseal base) to reline temporarily in the clinic using the reline jig for the patient to wear for 2-5 days......You will be amazed at the quality of the reline impressions you get using the reline jig......without using the reline jig you may lose the bite you worked hard to obtain originally....Process the reline and insert.... It takes a few extra steps but it can allow for some margin for errors and each step gets progressively refined... There is soooo much to do clinically though and unfortunately few dentists have the time to dedicate to precision and steps cannot be missed. Massads technique goes a bit beyond this by using a neutral zone and external impressions....Turbyfills actually uses the phonetic placement of the upper anterior teeth and then he fabricates an upper denture against a processed bite rim and looks for lingualized points as well as he uses hydrocast for a functional impression material..... I have used both methods which have different properties and results successfully....I have also adapted both of those concepts into my own protocol but few in my patient base cannot tolerate so much work so I occasionally use the existing dentures as an informal bite registration and impression tray....but that has its disadvantages too. Anyways take care and keep well....once a student always a student [/QUOTE]
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