Impression techniques

Impression Techniques for Implant Prostheses

1. IMPRESSION TECHNIQUES FOR IMPLANT PROSTHESES AAMIR GODIL FIRST YEAR P.G. DEPARTMENT OF PROSTHODONTICS M.A.R.D.C.

2. OUTLINE INTRODUCTION MATERIALS REQUIRED IMPRESSION TECHNIQUES GINGIVAL MASKING ERRORS LITERATURE REVIEW CONCLUSION

3. INTRODUCTION Accurate recording of spatial implant position is required to obtain a proper support to definitive restoration with passive fitting. Conrad et al (2007) Implants V/S Crowns and Bridges It is more critical to record 3- dimensional position of the implants as they occur intraorally . Natural teeth have a PDL to compensate for minor inaccuracies while implants have not. Pesun IJ (1997)

4. WHY SHOULD YOU MAKE IMPLANT IMPRESSIONS?

5. WHAT ALL DO YOU NEED TO MAKE IMPLANT IMPRESSIONS?

6. WHICH IMPRESSION MATERIAL TO CHOOSE?

7. HOW TO MAKE AN IMPRESSION FOR IMPLANT PROSTHESES?

8. IMPLANT LEVEL IMPRESSIONS

9. IMPLANT LEVEL IMPRESSION TECHNIQUES

10. CLOSED TRAY IMPRESSION TECHNIQUE

11. SPLINTING FOR MULTIPLE IMPLANT IMPRESSION The common practice of joining the direct transfer copings with acrylic resin is an attempt to stabilize the copings against rotation during fixture or abutment analog fastening control the relationship between implants in a rigid fashion ( Spector MR, Donovan TE, Nicholls JI. An evaluation of impression techniques for osseointegrated implants.J Prosthet Dent 1990;63:444–447) Assif et al. and Naconecy et al. showed that splinting technique was significantly more accurate than unsplinted techniques ( Assif D, Marshak B, Schmidt A. Accuracy of implant impression techniques. Int J Oral Maxillofac Implants 1996;11:216–222) ( Naconecy MM, Teixeira ER, Shinkai RS, Frasca LC, Cervieri A. Evaluation of the accuracy of 3 transfer techniques for implant-supported prostheses with multiple abutments. Int J Oral Maxillofac Implants 2004;19:192–198) OPEN TRAY IMPRESSION TECHNIQUE

12. STEPS IN SPLINTING MULTIPLE IMPLANTS FOR IMPRESSION

13. Autopolymerising resin (sectioned and reconnected) Impression Plaster (PI) and Polyether (FI) Impression Plaster Autopolymersing resin at the time of impression 3. VPS bite registration material J Adv Prosthodont . 2011 Dec ;3(4):177-85

14. ALL ON SIX

15. ABUTMENT LEVEL IMPRESSIONS

16. DIRECT- ABUTMENT LEVEL IMPRESSION TECHNIQUE

17. INDIRECT- ABUTMENT LEVEL IMPRESSION TECHNIQUE

18. GINGIVAL MASKING

19. WHAT SHOULD YOU SEND TO THE LAB?

20. WHAT ARE THE PROBABLE ERRORS? HOW DO YOU MINIMIZE THEM? VERIFY THE SEATING OF COMPONENTS IMPROPER INTERFACE BETWEEN IMPRESSION POST AND IMPLANT ANALOGUE ERRORS IN IMPRESSION MAKING Latex gloves with PVS impression material Non-uniform thickness of material

21. LITERATURE REVIEW

22. Three-Dimensional Accuracy of Implant and Abutment Level Impression Techniques: Effect on Marginal Discrepancy With comparison of different impression methods, including abutment level and implant level (closed tray and open tray), no significant difference was noted Journal of Oral Implantology

23. CONCLUSION

24. Precise impression methodology would decrease the failures related to the supra structure fabrication Ozkane , 2006 Imprecise superstructure fit results in mechanical and biologic consequences that disrupt the function of dental implants Heather J. et al, 2007

25. Thank You