TEMPORIZATION OR PROVISIONAL RESTORATION. PROVISIONAL- ESTABLISHED FOR TIME BEING,PENDING A...
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Transcript of TEMPORIZATION OR PROVISIONAL RESTORATION. PROVISIONAL- ESTABLISHED FOR TIME BEING,PENDING A...
TEMPORIZATION TEMPORIZATION OROR
PROVISIONAL PROVISIONAL RESTORATIONRESTORATION
““PROVISIONAL”-PROVISIONAL”-ESTABLISHED FOR TIME ESTABLISHED FOR TIME BEING,PENDING A BEING,PENDING A PERMANENT PERMANENT ARRANGEMENT.ARRANGEMENT.
AFTER TOOTH AFTER TOOTH PREPARATION PREPARATION TEMPORARY PROTECTIVE TEMPORARY PROTECTIVE OR FUNCTIONAL OR FUNCTIONAL RESTORATION IS RESTORATION IS FABRICATED OVER THE FABRICATED OVER THE PREPARED TOOTH TO BE PREPARED TOOTH TO BE USED UNTIL FABRICATION USED UNTIL FABRICATION OF FINAL PROSTHESISOF FINAL PROSTHESIS
IDEAL IDEAL
IDEALIDEALREQUIREMENTS OF REQUIREMENTS OF
PROVISIONAL PROVISIONAL RESTORATIONRESTORATION
PROVISIONAL RESTORATION
BIOLOGIC REQUIREMENTS
MECHANICAL REQUIREMENTS
ESTHETIC REQUIREMENTS
BIOLOGIC REQUIREMENTSBIOLOGIC REQUIREMENTS
PROVISIONAL PROVISIONAL RESTORATION SHOULDRESTORATION SHOULD
PROTECT THE PULP PROTECT THE PULP BECAUSE A FRESHLY BECAUSE A FRESHLY PREPARED TOOTH WILL PREPARED TOOTH WILL HAVE INCREASED HAVE INCREASED SENSITIVITYSENSITIVITY
MAINTAIN MAINTAIN PERIODONTAL PERIODONTAL HEALTH(GOOD HEALTH(GOOD MARGINAL FIT)MARGINAL FIT)
BE OCCLUSALLYBE OCCLUSALLY
COMPATIBLECOMPATIBLE PROTECT AGAINST PROTECT AGAINST
FRACTUREFRACTURE
MECHANICAL REQUIREMENTSMECHANICAL REQUIREMENTS
PROVISIONAL RESTORATION SHOULDPROVISIONAL RESTORATION SHOULD RESIST FUNCTIONAL LOADSRESIST FUNCTIONAL LOADS RESIST REMOVAL FORCESRESIST REMOVAL FORCES MAINTAIN INTERABUTMENT MAINTAIN INTERABUTMENT
ALIGNMENTALIGNMENT
ESTHETIC REQUIREMENTSESTHETIC REQUIREMENTS
PROVISIONAL PROVISIONAL RESTORATION RESTORATION SHOULDSHOULD
BE EASILY BE EASILY CONTOURABLECONTOURABLE
BE COLOR BE COLOR COMPATIBLECOMPATIBLE
BE TRANSLUCENTBE TRANSLUCENT BE COLOR STABLEBE COLOR STABLE
INDICATIONINDICATION
A LONG SPAN POSTERIOR FPDA LONG SPAN POSTERIOR FPD PROLONGED TREATMENT TIMEPROLONGED TREATMENT TIME PATIENT UNABLE TO AVOID PATIENT UNABLE TO AVOID
EXCESSIVE FORCES ON THE EXCESSIVE FORCES ON THE PROSTHESISPROSTHESIS
ABOVE AVERAGE MASTICATORY ABOVE AVERAGE MASTICATORY MUSCLE STRENGTHMUSCLE STRENGTH
HISTORY OF FREQUENT BREAKAGEHISTORY OF FREQUENT BREAKAGE
TYPES OF TYPES OF PROVISIONAL PROVISIONAL RESTORATIONRESTORATION
TYPE OF PROVISIONAL RESTORATION
BASED ON..
METHOD OF FABRICATION
MATERIALS AVAILABLE IN PREFORMED CROWNS
TYPE OF MATERIAL USED
DURATION OF USE
TECHNIQUE FOR FABRICATION
DEPENDING ON THE DEPENDING ON THE METHOD OF FABRICATIONMETHOD OF FABRICATION
CUSTOM MADE PROVISIONAL CUSTOM MADE PROVISIONAL RESTORATIONRESTORATION
PREFABRICATED PROVISIONAL PREFABRICATED PROVISIONAL RESTORATIONRESTORATION
CUSTOM MADE PROVISIONAL CUSTOM MADE PROVISIONAL RESTORATIONRESTORATION
THIS RESTORATION IS FABRICATED THIS RESTORATION IS FABRICATED TO REPRODUCE THE ORIGINAL TO REPRODUCE THE ORIGINAL CONTOURS OF THE TOOTHCONTOURS OF THE TOOTH
AN IMPRESSION OF THE PREPARED AN IMPRESSION OF THE PREPARED TOOTH IS MADE AND A CAST IS TOOTH IS MADE AND A CAST IS POUREDPOURED
PREPARED TOOTH ON THE CAST IS PREPARED TOOTH ON THE CAST IS WAXED UP AND CARVED TO WAXED UP AND CARVED TO REPRODUCE THE ORIGINAL REPRODUCE THE ORIGINAL CONTOURSCONTOURS
PREFORMED PROVISIONAL PREFORMED PROVISIONAL RESTORATIONRESTORATION
THESE ARE COMMERCIALLY THESE ARE COMMERCIALLY AVAILABLE PREFABRICATED CROWNSAVAILABLE PREFABRICATED CROWNS
AVAILABLE IN VARIOUS SIZESAVAILABLE IN VARIOUS SIZESOPERATOR CHOOSES THE BEST ONE OPERATOR CHOOSES THE BEST ONE
SUIT TO THE PATIENTSUIT TO THE PATIENTBEFORE CEMENTATION THESE BEFORE CEMENTATION THESE
CROWNS ARE SLIGHTLY ALTERED CROWNS ARE SLIGHTLY ALTERED AND MODIFIED TO FIT THE TOOTHAND MODIFIED TO FIT THE TOOTH
DEPENDING ON THE DEPENDING ON THE MATERIAL AVAILABLE IN MATERIAL AVAILABLE IN PREFORMED CROWNSPREFORMED CROWNS
POLYCARBONATEPOLYCARBONATECELLULOSE ACETATECELLULOSE ACETATEALUMINIUM AND TIN-SILVERALUMINIUM AND TIN-SILVERNICKEL-CHROMIUMNICKEL-CHROMIUM
DEPENDING ON THE TYPE DEPENDING ON THE TYPE OF MATERIAL USEDOF MATERIAL USED
RESIN BASED PROVISIONAL RESIN BASED PROVISIONAL RESTORATIONRESTORATION
CELLULOSE ACETATECELLULOSE ACETATE POLYCARBONATEPOLYCARBONATE POLY-METHYL POLY-METHYL
METHACRYLATEMETHACRYLATE POLY-R METHACRYLATEPOLY-R METHACRYLATE MICROFILLED COMPOSITEMICROFILLED COMPOSITE URETHANE DIMETHACRYLATEURETHANE DIMETHACRYLATEMETAL PROVISIONAL RESTORATIONMETAL PROVISIONAL RESTORATION ALUMINIUMALUMINIUM NICKEL-CHROMIUMNICKEL-CHROMIUM TIN-SILVERTIN-SILVER
DEPENDING ON THE DEPENDING ON THE DURATION OF USEDURATION OF USE
SHORT TERM TEMPORARY SHORT TERM TEMPORARY RESTORATION RESTORATION
LONG TERM TEMPORARY LONG TERM TEMPORARY RESTORATIONRESTORATION
DEPENDING ON TECHNIQUE DEPENDING ON TECHNIQUE OF FABRICATIONOF FABRICATION
PROVISIONAL RESTORATION PROVISIONAL RESTORATION FABRICATED USING DIRECT FABRICATED USING DIRECT TECHNIQUETECHNIQUE
PROVISIONAL RESTORATION PROVISIONAL RESTORATION FABRICATED USING INDIRECT FABRICATED USING INDIRECT TECHNIQUETECHNIQUE
PROVISIONAL RESTORATION PROVISIONAL RESTORATION FABRICATED USING DIRECT-INDIRECT FABRICATED USING DIRECT-INDIRECT TECHNIQUETECHNIQUE
TECHNIQUES FOR TECHNIQUES FOR CUSTOM PROVISIONAL CUSTOM PROVISIONAL
RESTORATIONRESTORATION
OVERIMPRESSION FABRICATED OVERIMPRESSION FABRICATED PROVISIONAL CROWNPROVISIONAL CROWN
TEMPLATE FABRICATED PROVISIONAL TEMPLATE FABRICATED PROVISIONAL FIXED PARTIAL DENTUREFIXED PARTIAL DENTURE
TEMPLATE FABRICATED VLC TEMPLATE FABRICATED VLC PROVISIONAL RESTORATIONPROVISIONAL RESTORATION
SHELL-FABRICATED PROVISIONAL SHELL-FABRICATED PROVISIONAL RESTORATIONRESTORATION
OVERIMPRESSION FABRICATED BIS-OVERIMPRESSION FABRICATED BIS-ACRYL COMPOSITE CROWNACRYL COMPOSITE CROWN
OVERIMPRESSIONOVERIMPRESSION
FABRICATED FABRICATED PROVISIONAL PROVISIONAL
CROWNCROWN
1.COMMONLY DONE WITH 1.COMMONLY DONE WITH ALGINATE IMPRESSION ALGINATE IMPRESSION MATERIALMATERIAL
2.OVERIMPRESSION CAN 2.OVERIMPRESSION CAN BE MADE FROM THE BE MADE FROM THE PATIENTS MOUTH OR PATIENTS MOUTH OR FROM THE DIAGNOSTIC FROM THE DIAGNOSTIC CAST.CAST.
3.WHEN THE ALGINATE 3.WHEN THE ALGINATE HAS SET HAS SET OVERIMPRESSION IS OVERIMPRESSION IS REMOVED AND REMOVED AND CHECKED FOR CHECKED FOR COMPLETENESS.COMPLETENESS.
4.THIN FLASHES OF 4.THIN FLASHES OF IMPRESSION MATERIAL THAT IMPRESSION MATERIAL THAT REPLICATE THE GINGIVAL REPLICATE THE GINGIVAL CREVICE ARE REMOVED TO CREVICE ARE REMOVED TO INSURE THAT NO INSURE THAT NO IMPEDIMENT TO THE IMPEDIMENT TO THE COMPLETE SEATING OF THE COMPLETE SEATING OF THE CAST INTO THE CAST INTO THE OVERIMPRESSION LATER.OVERIMPRESSION LATER.
5.IMPRESSION IS THEN 5.IMPRESSION IS THEN WRAPPED IN A WET PAPER WRAPPED IN A WET PAPER TOWEL AND PLACED IN A TOWEL AND PLACED IN A ZIPLOCK PLASTIC BAG FOR ZIPLOCK PLASTIC BAG FOR LATER USE. LATER USE.
6.WHEN THE TOOTH 6.WHEN THE TOOTH PREPARATION IS PREPARATION IS COMPLETED,ANOTHECOMPLETED,ANOTHER QUADRANT R QUADRANT IMPRESSION IS MADE IMPRESSION IS MADE WITH ALGINATEWITH ALGINATE
7.THIS IMPRESSION IS 7.THIS IMPRESSION IS THEN POURED WITH THEN POURED WITH A THIN MIX OF QUICK A THIN MIX OF QUICK SETTING PLASTER.SETTING PLASTER.
8.THEN TRY TRIMMED 8.THEN TRY TRIMMED QUICK SET PLASTER QUICK SET PLASTER CAST IN THE CAST IN THE OVERIMPRESION TO OVERIMPRESION TO MAKE SURE THAT IT MAKE SURE THAT IT WILL SEAT WILL SEAT COMPLETELYCOMPLETELY
9.COAT THE PREPARED 9.COAT THE PREPARED TOOTH AND ADJACENT TOOTH AND ADJACENT AREAS OF THE CAST AREAS OF THE CAST LIBERALLY WITH A “TIN LIBERALLY WITH A “TIN FOIL SUBSTITUTE” FOIL SUBSTITUTE” SEPERATING MEDIUMSEPERATING MEDIUM
10.MIX TOOTH COLORED 10.MIX TOOTH COLORED ACRYLIC RESIN IN A ACRYLIC RESIN IN A DAPPEN DISH WITH A DAPPEN DISH WITH A CEMENT SPATULACEMENT SPATULA
11.PLACE THE RESIN IN THE 11.PLACE THE RESIN IN THE OVERIMPRESSION SO OVERIMPRESSION SO THAT IT COMPLETELY THAT IT COMPLETELY FILLS THE CROWN AREA FILLS THE CROWN AREA OF THE TOOTHOF THE TOOTH
..
..12.SEAT THE CAST INTO THE 12.SEAT THE CAST INTO THE
OVERIMPRESSION ,MAKING OVERIMPRESSION ,MAKING SURE THAT THE TEETH ON SURE THAT THE TEETH ON THE CAST ARE ACCURATELY THE CAST ARE ACCURATELY ALIGNED WITH THE TOOTH ALIGNED WITH THE TOOTH IMPRESSION.IMPRESSION.
13.FORCE USED TO SEAT THE 13.FORCE USED TO SEAT THE CAST INTO THE ALGINATE CAST INTO THE ALGINATE IMPRESSION IS IMPRESSION IS CRITICAL.EXCESSIVE FORCE CRITICAL.EXCESSIVE FORCE CAN OVERSEAT THE CAST CAN OVERSEAT THE CAST AND UNEVEN FORCE CAN AND UNEVEN FORCE CAN TORQUE THE CAST.TORQUE THE CAST.
14.ONCE THE CAST HAS BEEN 14.ONCE THE CAST HAS BEEN FIRMLY SEATED HOLD THE FIRMLY SEATED HOLD THE CAST IN PLACE WITH A CAST IN PLACE WITH A LARGE RUBBER BANDLARGE RUBBER BAND
15.PLACE THE OVERIMPRESSION-15.PLACE THE OVERIMPRESSION-PLASTER CAST ASSEMBLY IN A PLASTER CAST ASSEMBLY IN A PLASTER BOWL FULL OF HOT TAP PLASTER BOWL FULL OF HOT TAP WATER OR APPROX. 5 MIN OR INTO A WATER OR APPROX. 5 MIN OR INTO A PRESSURE POT UNDER 20 PSI.PRESSURE POT UNDER 20 PSI.
16.WHEN THE RESIN HAS 16.WHEN THE RESIN HAS POLYMERISED.REMOVE THE RUBBER POLYMERISED.REMOVE THE RUBBER BAND TO DISASSEMBLE IT.BAND TO DISASSEMBLE IT.
17.FINALLY THE 17.FINALLY THE RESTORATION IS RESTORATION IS FINISHED,POLISHED FINISHED,POLISHED AND CEMENTEDAND CEMENTED