IJCRR - 6(6), March, 2014
Pages: 58-61
MICROHARDNESS EVALUATION OF NANO- COMPOSITE DENTURE TEETH
Author: Jyoti, Ravinder Kumar , Shivam Seshan
Category: Healthcare
[Download PDF]
Abstract:
Background: New types of artificial teeth are commercially available. However, evidence - based information with respect to their physicomechanical properties is lacking. Objective: The purpose of this study was to qualify and quantify relative micro hardness characteristics of three commercially available types of artificial teeth. Materials and Methods: Three brands of three types of artificial teeth were examined. Vickers hardness was determined for each of the polished cross-sectioned teeth. Results: Vicker hardness values ranged from 22.3 to 26.7 for microfilled composites,20.0 to 25.3 for dual cross linked acrylic & 15.9 to 19.6 for nano- composite teeth. Conclusion: Within the limitations of this study, microfilled composite denture teeth exhibited superiority in terms of microhardness among all the specimens evaluated.
Keywords: Hardness, nanocomposite denture teeth, Vickers hardness test.
Citation:
Jyoti, Ravinder Kumar , Shivam Seshan. MICROHARDNESS EVALUATION OF NANO- COMPOSITE DENTURE TEETH International Journal of Current Research and Review. 6(6), March, 58-61
References:
REFERENCES
1. Zarb GA, Bolender CL. Eckert SE, Jacob RF,Fenton AH, Merickske-stern RM. Prosthodontic treatment for edentulous patients:Complete denture and Implantsupported prosthesis. 12th ed. St. Louis: Mosby; 2004. p. 195-8.
2. Zeng J, Sato Y, Ohkubo C, Hosoi T. In vitro wear resistance of three types of composite resin denture teeth. J Prosthet Dent 2005; 94: 453–457.
3. Huan lu,:leslie b. roeder,: Effect of Surface Roughness on Stain Resistance of Dental Resin Composites J Esthet Restor Dent 17:102–109, 2005.
4. Kim KH, Ong Okuno O. The effect of filler loading and morphology on the mechanical properties of composites.J Prosthet Dent 2002;87:642-9.
5. Condon JR, Ferracane JL. In vitro wear of composite with varied cure, filler level, andfiller treatment. J Dent Res 1997;76:1405- 11.
6. Li Y, Swartz ML, Philips RW, Moore BK,Roberts TA. Effect of filler content and size on properties of composites. J Dent Res1985;64:1396-401.
7. Jaarda MJ, Wang RF, Lang BR. A regression analysis of filler particle content to predict composite wear. J Prosthet Dent 1997;77:57- 67.
8. Hashinger DT, Fairhurst CW. Thermal expansion and filler content of composite resins. J Prosthet Dent 1984;52:506-10.
9. Soderholm KJ. Influence of silane treatment and filler fraction on thermal expansion of composite resins. J Dent Res 1984;63:1321-6.
10. Schwartz JI, Soderholm KJ. Effect of filler size, water, and alcohol on hardness and wear of dental composites. Acta Odontol Scand 2004;62:102-6.
11. Turssi CP, Ferracane JL, Vogel K. Filler features and their effects on wear and degree of conversion of particulate dental composites.Biomaterials 2005;26:4932-7.
12. Miyasaka T. Effect of shape and size of silanated fillers on mechanical properties of experimental photo cure composite resins.Dent Mater J 1996;15:98-110.
13. Lutz F, Philips RW. A classification and evaluation of composite resin sytems. J Prosthet Dent 1983;50:480-8.
14. Suzuki S. In vitro wear of nano-composite denture teeth.J Prosthodont 2004; 13: 238– 243.
15. Fumiaki Kawano, Takafumi Ohguri, Tetsuo IchikawaIwate Mizuno, Akira Hasegawa. Shock absorbability and hardness of commercially available denture teeth. Int J Prosthodont 2002;15: 243-247.
16. Mandikos MN, McGivney, Davis E,Bush PJ, Carter JM. A comparison of the wear resistance and hardness of indirect composite resins. J Prosthet Dent 2001;85:386-95.
17. Kawano F, Ohguri T, Ichikawa T, Mizuno I, Hasegawa A. Shock absorbability and hardness of commercially available dentureteeth. Int J Prosthodont 2002;15:243-7.
18. Okada K, Tosaki S, Hirota K, Hume WR.Surface hardness change of restorative filling materials stored in saliva. Dent Mater 2001;17:34-9.
19. Leard A. Addy:The propensity of different brands of tea and coffee to cause staining associated with chlorhexidine.JClin Periodontol 1997:24:115-118.
20. Asher C, Read MJF: Early enamel erosion in children associated with the excessive consumption of citric acid.Br. HP.HI J 19X7; 162:384-387.
21. Mui S. Soh , Adrian U. J. Yap , Alan Sellinger (2007): Physicomechanical evaluation of low-shrinkage dental nanocomposites based on silsesquioxane cores .European Journal of Oral SciencesVolume 115, Issue 3, Pages 230-238
22. Paola G. Loyaga-Rendon, Hidekazu Takahashi,Iwao Hayakawa, c and Naohiko Iwasaki (2007) : Compositional characteristics and hardness of acrylic and composite resin artificial teeth. (J Prosthet Dent 2007; 98: 141-149.)
23. Muhamad Ghazal and Matthias Kern (2009) : The influence of antagonistic surface roughness on the wear of human enamel and nanofilled composite resin artificial teeth .J Prosthet Dent 2009;101:342-349.
24. M. ADDY AND W. R. ROBERTS ( 1981): Comparison of the bisbiguanide antiseptics alexidine and chlorhexidine. II. Clinical and in vitro staining properties. . Journal of Clinical Periodontology 1981: 8: 220-230.
25. T. Stober , H. Gilde, P. Lenz (2001): Color stability of highly filled composite resin materials for facings. Dental Materials 17 (2001) 87±94.
26. JM Brady and RD Wood (1977) : Scanning microscopy of cervical erosion .J Am Dent Assoc, Vol 94, No 4, 726-729.1977.
27. A.Leard and M.Addy ( 1997) : The propensity of different bunds of tea and coffee to cause staining associated with chlorhexidine. J Clin Periodontol 1997; 24 : 115-118.
|