Palladium in Dentistry
In dentistry, palladium is a precious metal which is a major component of the crown and bridge prothodontics alloy as well as gold. Because the price of gold is higher than palladium, presently, palladium is used instead of gold. The proportion of gold was reduced until none, thus palladium plays more important role in dentistry. There were several studies about the safety of palladium usage in dentistry, especially in biological aspect and toxicity of palladium. There was no evidence supported that palladium is toxic to human health. This article comprised of physical and chemical properties as well as biological effects of palladium will explain about signs and symptoms of the palladium toxicity. It will be useful for consideration of palladium usage in crown and bridge prothodontics for a successful outcome.
1. Wataha JC. Biocompatibility of dental casting alloys: a review. J Prosthet Dent 2000; 83: 223-234.
2. Wataha JC, Hanks CT. Biological effects of palladium and risk of using palladium in casting alloys. J Oral Rehabil 1996; 23: 309- 320.
3. Goyer RA. Toxic effects of metal 3rd ed. New York: Macmillan Pubishing Co; 1986: 582- 635.
4. Powers JM, Sakaguchi RL. Craig’s restorative dental materials 12th ed. St. Louis: Mosby Elsevier; 2006.
5. Syverud N, Dahl JE, Hero H, Morisbak E. Corrosion and biocompatibility testing of palladium alloy castings. Dent Mater J 2001; 17: 7-13.
6. Papazolou E, Brantley WA, Johnston WM. Evaluation of high-temperature distortion of high-palladium metal-ceramic crowns. J Prosthet Dent 2001; 85: 133-320.
7. Garau V, Masala MG, Bortis MC, Pittau R. Contact stomatitis due to palladium in dental alloys: a clinical report. J Prosthet Dent 2005; 93: 318-320.
8. Lygre H. Prosthodontic biomaterials and adverse reactions: a critical review of the clinical and research literature. Acta Odontol Scand 2002; 6: 1-9.
9. Wataha JC, Hanks CT, Craig RG. The in vitro effect of metal cations on eukaryotic cell metabolism. J Biomed Mater Res 1991; 25: 1133-1149.
10. Moore W, Hysell D, Crocker W, Stara J. Biological fate of103 Pd in rats following different routes of exposure. Environ Res 1974; 8: 234-240.
11. Wiester MJ. Cardiovascular action of palladium compounds in the unanesthetized rat. Environ Health Perspect 1975; 12: 41-44.
12. Al-Hiyashi A, Bashabsheh OM, Darmani H. Elements released from dental casting alloys and their cytotoxic effects. Int J Prosthodont 2002; 15: 473-478.
13. Al-Hiyashi A, Bashabsheh OM, Darmani H. An investigation of the cytotoxic effects of dental casting alloys. Int J Prosthodont 2003; 16: 8-12.
14. Wataha JC, Malcolm CT, Hanks CT. Correlation between cytotoxicity and element release by dental casting alloys. Int J Prosthodont 1995; 8: 9-14.
15. Wataha JC, Malcolm CT, Hanks CT. Effect of alloy surface composition on release of elements from dental casting alloys. J Oral Rehabil 1996; 23: 583-589.
16. Hensten-Pettersen A. Casting alloys: side effect. Adv Dent Res 1992; 6: 38-43.
17. Hensten-Pettersen A, Jacobsen N. Perceived side effects of biomaterials in prosthodontic dentistry. J Prosthet Dent 1991; 65: 138-144.
18. Mizoguchi S, Setoyama M, Kanzaki T. Linear lichen planus in the region of the mandibular nerve caused by an allergy to palladium in dental metals. Dermatology 1998; 196: 268- 270.
19. Nelson SK, Wataha JC, Neme AML, Cibirka RM, Lockwood PE. Cytotoxicty of dental casting alloys pretreated with biologic solutions. J Prosthet Dent 1999; 81: 591-596.
20. Wataha JC, Lockwood PE, Noda M, Nelson SK, Mettenburg DJ. Effect of tooth brushing on the toxicity of casting alloys. J Prosthet Dent 2002; 87: 94-98.