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Microsoft word - perfect provisionals.doc
Perfect Provisionals First Time Every Time
Start with the end in mind. Design a smile. Look at before and after photos,
pictures from magazines, high school photo. Demonstrate that smile on the
client using computer imaging or mock ups, Unless you are especial y skil ed at
quickly developing esthetic contours and occlusion with mock ups I recommend
Evaluate and treat occlusal problems if indicated Leveled Ear bow Bite stick Photos to confirm the position Bite registration Use Addition-Reduction style wax ups. Mark additions in blue, reductions in red.
Make duplicate models of the wax up. Make Hardcast / Copyplast Pressure molded matrix with Biostar or Ministar
Make a pressure molded reduction guide with probe holes to confirm that you
2. Check for adequate clearance with the reduction guide
3. Retract or expose any Subgingival margins.
6. Thin coat of Vaseline on the composites
7. over fil the prepared teeth in the matrix with provisional material
9. Seat the tray until the tissue blanches slightly
10. Remove the matrix after 90 seconds (Protemp)
11. Remove the matrix and tease the temporaries off the teeth. Quickly remove the
largest undercuts (30 sec) and replace the temporaries back onto the teeth for
90 seconds more. If the temporaries come off with the matrix leave them in the
matrix for two more minutes until they are rigid then remove the large undercuts
and place back onto the teeth. If al instructions were fol owed perfectly up to this
point the prototypes wil go back onto the teeth and fit perfectly. The margins on
the provisional should be as easy to read as the impressions
12. Trim off al over hanging margins . (This should be very easy at this stage if you
have set everything up perfectly ahead of time)
13. Open the embrasures wide for easy flossing. Black holes in the gingival
14. Work out the final details of occlusion, esthetics and phonetics in the mouth
15. Cement retentive crowns with non-eugenol containing temporary cement
16. Spot etch and button bond Veneers and other non-retentive restorations
18. Make a Penta-quick impression of the final temporaries to keep on hand for
replacements, repairs and laboratory communication
19. Prescribe Periostat 20mg twice a day for 30 to 90 days to reduce bleeding
between the preparation and seat appointment to reduce bleeding.
21. Schedule for perio check 1 week prior to seat date to confirm that there is no
Canted or misaligned provisional
: Check landmarks, have a definitive
stop, use a transparent matrix. Confirm the face bow and bite stick.
Confirm the models were mounted correctly.
Temporary locks on
: Remove undercuts on or between the teeth Indirect
temporaries that are cemented on require preparations that draw with
each other., Vaseline composite build up restorations, Remove the
Unable to read margins
: Dry teeth, retracted, hold temporary in one
Staining under the provisional:
Avoid open margins, Astringident,
Chlorahexadine rinses, Some medications and neutraceuticals
Breakage and delaminations:
Check the occlusion. Reinforce bridges
with a fiber insert like Ribbond. Bond a larger area with non retentive
Temporary requires excessive trimming and adjusting:
Initial wax up
is over waxed. Matrix is incompletely seated or seated in the wrong
position. Temporaries are incompletely seated
Gums bleed at the final seat appointment:
overhangs or obstructed embrasures, prescribe periostat.
Check to be certain that the matrix is seated correctly
over the teeth. Confirm initial bite records, Check for correct mounting of
the models. Adjust the occlusion. Use a deprogrammer if necessary.
Never over close the bite. Use caution when opening the bite.
O que faz de um laboratório, um laboratório? O imaginário do senso comum remete a pipetas, tubos de ensaio, forte cheiro de reagentes químicos, fumaça saindo de experimentos que mudam de cor e, eventualmente, até explodem. Pode remeter também a jalecos brancos, à assepsia de ambientes que não podem ser contaminados por agentes externos. Em uma versão repaginada, o laboratório pode se
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