1. REPAIR RELINING AND REBASING`

2. Repair

3. Causes of fracture Excessive pressure during cleaning.
Accidents such as dropping the denture

4. Full dentures with a cobalt chromium lingual strengthener

5. Repair of complete fracture

6. 1-The broken edges of the denture are cleaned.

7. 2-The parts of the broken denture reassembled and fixed together.

8. 3-Plaster is vibrated onto denture.
4-Sticky wax removed.
5-The resin on both sides of the break is cut away (2-3 mm)

9. Repairs using cold-curing resin Dough method

10. Sprinkle on method

11. Relining and Rebasing

12. Relining
It is refitting the denture by adding a small amount of the denture base material to the fitting surface.

13. Rebasing
It is refitting the denture by replacing the denture base material without changing the occlusal relation of the denture.

14. Indications
1- For ill fitting dentures to improve retention and stability of the denture. 2- When there is decreased vertical dimension of occlusion. 3- Rebasing is indicated when the denture base is discolored.

15. Technique of rebasing and relining
An impression with zinc oxide paste inside the denture is necessary. The patient should bite with both denture during making an impression. The impression is poured into dental stone, then flasked without separation. For relining the impression material is replaced by acrylic resin. For rebasing the denture base and impression material is replaced with acrylic.

16. Duplication of complete denture

17. Indication
Duplication is indicated when the old denture in good condition and the patient is accustomed to it and a spare one is required

18. Elastic mold
The denture is flasked in elastic impression material e.g. alginate and silicone to make elastic mold. This elastic material facilitate removal of the denture.
The denture removed and new teeth placed in position and acrylic resin is packed into the mold. .

19. References
1-Allen AA, Heath JR, Mc Cord: Complete Prosthodontics; Problems, Diagnosis and Management. Mosby-Wolf, London, 1995.
2- Beresin, V.E. and Schiesser, F. J.: The neutral zone in complete and partial dentures. 2nd ed. St. Louis, The C.V. Mosby Company: 1978.
3- Coleman, R. D. and kaiser, W. B.: The Scientific Bases of Dentistry. Philadelphia, W. B. Sounders; 1966.
4- Craig, R.G.: Restorative Dental Materials. 8th ed. St. Louis, C. V. Mosby Company.
5-Fenn, H.R.B.; Liddelow, K.P. and Gemson, A.B.: Clinical Dental Prosthetics. 2 ed. London, Staples; 1974.
6- Geering AH,Kundert M , Kelesy C: Complete denture and overdenture Prosthetics. Theme medical publication Inc. New York, 1993.
7-Grant AR, Heath JR, Mc Cord JF: Complete Prosthodontics; Problems, Diagnosis and Management. Mosby-Wolf, London, 1996.
8- Heartwell, C.M. and Rhan, A.G.: Syllabus of Complete Dentures. 3rd ed. Philadelphia, Lea and
Febiger; 1986.
9- Sharry, J.J.: Complete denture prosthodontics. 3rd ed. NewYork, McGraw-Hill; 1974.
10- Sowter, J.B.: Dental laboratory technology: prosthodontic techniques. Chapel Hill, University of North Carolina; 1968.
11-Watt, D.M. and Mac Gregor, A.R.: Designing complete dentures. Philadelphia, W.B. Sounders; 1976.
12- Winkler, S.: Essential of complete Denture Prosthodontics. 2nd ed. PSG Publishing Company; 1988.
13- Zarb, G.A.; Bolender, C.L.; HicKey, J.C. and carlesson, G.E.: Boucher's Prothodontic Treatment for Edentulous Patients. 7th. Ed. St-Louis, The C.V.Mosby Company; 1990.
N, B. All pictures in these slides are copied from the above references and from the internet.