1. TEMPORIZATION OR PROVISIONAL RESTORATION
dr shabeel pn

2. “PROVISIONAL”-ESTABLISHED FOR TIME BEING,PENDING A PERMANENT ARRANGEMENT.
AFTER TOOTH PREPARATION TEMPORARY PROTECTIVE OR FUNCTIONAL RESTORATION IS FABRICATED OVER THE PREPARED TOOTH TO BE USED UNTIL FABRICATION OF FINAL PROSTHESIS

3. IDEAL IDEAL REQUIREMENTS OF PROVISIONAL RESTORATION

5. BIOLOGIC REQUIREMENTS
PROVISIONAL RESTORATION SHOULD
PROTECT THE PULP BECAUSE A FRESHLY PREPARED TOOTH WILL HAVE INCREASED SENSITIVITY
MAINTAIN PERIODONTAL HEALTH(GOOD MARGINAL FIT)

6. BE OCCLUSALLY
COMPATIBLE
PROTECT AGAINST FRACTURE

7. MECHANICAL REQUIREMENTS
PROVISIONAL RESTORATION SHOULD
RESIST FUNCTIONAL LOADS
RESIST REMOVAL FORCES
MAINTAIN INTERABUTMENT ALIGNMENT

8. ESTHETIC REQUIREMENTS
PROVISIONAL RESTORATION SHOULD
BE EASILY CONTOURABLE
BE COLOR COMPATIBLE
BE TRANSLUCENT
BE COLOR STABLE

9. INDICATION A LONG SPAN POSTERIOR FPD PROLONGED TREATMENT TIME
PATIENT UNABLE TO AVOID EXCESSIVE FORCES ON THE PROSTHESIS
ABOVE AVERAGE MASTICATORY MUSCLE STRENGTH
HISTORY OF FREQUENT BREAKAGE

10. TYPES OF PROVISIONAL RESTORATION

12. DEPENDING ON THE METHOD OF FABRICATION

13. CUSTOM MADE PROVISIONAL RESTORATION
PREFABRICATED PROVISIONAL RESTORATION

14. CUSTOM MADE PROVISIONAL RESTORATION
THIS RESTORATION IS FABRICATED TO REPRODUCE THE ORIGINAL CONTOURS OF THE TOOTH
AN IMPRESSION OF THE PREPARED TOOTH IS MADE AND A CAST IS POURED
PREPARED TOOTH ON THE CAST IS WAXED UP AND CARVED TO REPRODUCE THE ORIGINAL CONTOURS

15. PREFORMED PROVISIONAL RESTORATION
THESE ARE COMMERCIALLY AVAILABLE PREFABRICATED CROWNS
AVAILABLE IN VARIOUS SIZES
OPERATOR CHOOSES THE BEST ONE SUIT TO THE PATIENT
BEFORE CEMENTATION THESE CROWNS ARE SLIGHTLY ALTERED AND MODIFIED TO FIT THE TOOTH

16. DEPENDING ON THE MATERIAL AVAILABLE IN PREFORMED CROWNS

17. POLYCARBONATE
CELLULOSE ACETATE
ALUMINIUM AND TIN-SILVER
NICKEL-CHROMIUM

18. DEPENDING ON THE TYPE OF MATERIAL USED

19. RESIN BASED PROVISIONAL RESTORATION
CELLULOSE ACETATE
POLYCARBONATE
POLY-METHYL METHACRYLATE
POLY-R METHACRYLATE
MICROFILLED COMPOSITE
URETHANE DIMETHACRYLATE
METAL PROVISIONAL RESTORATION
ALUMINIUM
NICKEL-CHROMIUM
TIN-SILVER

20. DEPENDING ON THE DURATION OF USE

21. SHORT TERM TEMPORARY RESTORATION
LONG TERM TEMPORARY RESTORATION

22. DEPENDING ON TECHNIQUE OF FABRICATION

23. PROVISIONAL RESTORATION FABRICATED USING DIRECT TECHNIQUE
PROVISIONAL RESTORATION FABRICATED USING INDIRECT TECHNIQUE
PROVISIONAL RESTORATION FABRICATED USING DIRECT-INDIRECT TECHNIQUE

24. TECHNIQUES FOR CUSTOM PROVISIONAL RESTORATION

25. OVERIMPRESSION FABRICATED PROVISIONAL CROWN
TEMPLATE FABRICATED PROVISIONAL FIXED PARTIAL DENTURE
TEMPLATE FABRICATED VLC PROVISIONAL RESTORATION
SHELL-FABRICATED PROVISIONAL RESTORATION
OVERIMPRESSION FABRICATED BIS-ACRYL COMPOSITE CROWN

26. OVERIMPRESSIONFABRICATED PROVISIONAL CROWN

27. 1.COMMONLY DONE WITH ALGINATE IMPRESSION MATERIAL
2.OVERIMPRESSION CAN BE MADE FROM THE PATIENTS MOUTH OR FROM THE DIAGNOSTIC CAST.
3.WHEN THE ALGINATE HAS SET OVERIMPRESSION IS REMOVED AND CHECKED FOR COMPLETENESS.

28. 4.THIN FLASHES OF IMPRESSION MATERIAL THAT REPLICATE THE GINGIVAL CREVICE ARE REMOVED TO INSURE THAT NO IMPEDIMENT TO THE COMPLETE SEATING OF THE CAST INTO THE OVERIMPRESSION LATER.
5.IMPRESSION IS THEN WRAPPED IN A WET PAPER TOWEL AND PLACED IN A ZIPLOCK PLASTIC BAG FOR LATER USE.

29. 6.WHEN THE TOOTH PREPARATION IS COMPLETED,ANOTHER QUADRANT IMPRESSION IS MADE WITH ALGINATE
7.THIS IMPRESSION IS THEN POURED WITH A THIN MIX OF QUICK SETTING PLASTER.
8.THEN TRY TRIMMED QUICK SET PLASTER CAST IN THE OVERIMPRESION TO MAKE SURE THAT IT WILL SEAT COMPLETELY

30. 9.COAT THE PREPARED TOOTH AND ADJACENT AREAS OF THE CAST LIBERALLY WITH A “TIN FOIL SUBSTITUTE” SEPERATING MEDIUM
10.MIX TOOTH COLORED ACRYLIC RESIN IN A DAPPEN DISH WITH A CEMENT SPATULA
11.PLACE THE RESIN IN THE OVERIMPRESSION SO THAT IT COMPLETELY FILLS THE CROWN AREA OF THE TOOTH

31. .
12.SEAT THE CAST INTO THE OVERIMPRESSION ,MAKING SURE THAT THE TEETH ON THE CAST ARE ACCURATELY ALIGNED WITH THE TOOTH IMPRESSION.
13.FORCE USED TO SEAT THE CAST INTO THE ALGINATE IMPRESSION IS CRITICAL.EXCESSIVE FORCE CAN OVERSEAT THE CAST AND UNEVEN FORCE CAN TORQUE THE CAST.
14.ONCE THE CAST HAS BEEN FIRMLY SEATED HOLD THE CAST IN PLACE WITH A LARGE RUBBER BAND

32. 15.PLACE THE OVERIMPRESSION-PLASTER CAST ASSEMBLY IN A PLASTER BOWL FULL OF HOT TAP WATER OR APPROX. 5 MIN OR INTO A PRESSURE POT UNDER 20 PSI.
16.WHEN THE RESIN HAS POLYMERISED.REMOVE THE RUBBER BAND TO DISASSEMBLE IT.

33. 17.FINALLY THE RESTORATION IS FINISHED,POLISHED AND CEMENTED

34. Thank You