THE EFFORT OF VARIOUS MIXING METHODS ON DYNAMIC VISCOELASTICITY OF A TEMPORARY SOFT LINING MATERIAL; COE-COMFORT

  • Ryu Hyun-Ju (Samsung Medical Center, College of Medicine, Sungkyunkwan University) ;
  • Bae Hanna-Eun-Kyong (Samsung Medical Center, College of Medicine, Sungkyunkwan University) ;
  • Shim June-Sung (Samsung Medical Center, College of Medicine, Sungkyunkwan University) ;
  • Lee Seok-Hyung (Samsung Medical Center, College of Medicine, Sungkyunkwan University) ;
  • Moon Hong-Suk (Department of Prosthodontics, Yonsei University College of Dentistry) ;
  • Chung Mun-Kyu (Department of Prosthodontics, Yonsei University College of Dentistry)
  • Published : 2004.12.01

Abstract

Statement of Problem. Temporary soft relining materials are used in a diverse clinical situations such as tissue conditioner, relining material, functional impression by varying its viscoelasticity. However, reproduction of consistent viscoelasticity has been not possible. Materials and methods. Considering setting mechanism of this material, this study has measured the effect of varying amount of void in dynamic viscoelasticity of soft relining material, with three different mixing methods. In each methods 10 specimens were made and subjected to dynamic viscoelastic test which were measured at specific times over period of 72 hours. Results. The analysis of the result shown that there was no statistically significant differences between different mixing methods. Conclusion. Different mixing methods had no effect over control of viscoelasticity of soft lining material. Further research is recommended for under similar oral environmental condition.

Keywords

References

  1. Jagger DC, Harrison A. Complete dentures-the soft option. An update for general dental practice. Br Dent J 1997 Apr 26;182(8):313-317 https://doi.org/10.1038/sj.bdj.4809374
  2. Ward JE. Effect of time lapse between mixing and loading on the flow of tissue conditioning material, J Prosthe Dent 1978;40(5):499-508 https://doi.org/10.1016/0022-3913(78)90080-X
  3. Kawano F, Tada N, Nagao K, Matsumoto N. The influence of soft lining materials on pressure dis-tribution. J Prosthe Dent 1991 Apr; 65(4):567-575 https://doi.org/10.1016/0022-3913(91)90301-C
  4. Murata H, Haberham RC, Manada T, Taguchi N. Settingand stress relaxation behaviour of resilient denture liners. J Prosthet Dent 1998 Dec;80(6):714-722 https://doi.org/10.1016/S0022-3913(98)70060-5
  5. Graham BS, Jones DW, Sutow EJ. Clinical implications of resilient denture lining material research. Part I: Flexibility and elasticity. J Prosthet Dent 1989 Oct; 62 (4):421-428
  6. Mack PJ. Denture soft linings: materials avail-able. Aust Dent J 1989 Dec;34(6): 517-521 https://doi.org/10.1111/j.1834-7819.1989.tb04657.x
  7. Murata H, Tahuchi N, Hamada T, McCabe JF. Dynamic viscoelastic properties and the age changes of long-term soft denture liners. Biomaterials 2000 Jul;21(14): 1421-1427 https://doi.org/10.1016/S0142-9612(00)00010-7
  8. Saber-Sheikh K,Clarke RL, Braden M.Viscoelastiic properties of some soft lining materials II - Aging characteristics. Biomaterials 1999 Nov;20(21):2055-2062 https://doi.org/10.1016/S0142-9612(99)00109-X
  9. Yoeli Z, Miller V,Zeltr C. Consistency and softness of soft liners. J Prosthet Dent 1996 Apr;75(4):412-418 https://doi.org/10.1016/S0022-3913(96)90034-7
  10. Branden M, Wright PS, Parker S. Soft lining materials - a review. Eur J Prosthodont Restor Dent 1995 jun;3(4):163-174. Review
  11. Nimmo A, Fong BJ, Hoover CL, Newburn E. Vacuum treatment of tissue conditioners. J Prosthet Dent 1985 Dec; 54(6): 814-817 https://doi.org/10.1016/0022-3913(85)90477-9
  12. Malmstrom HS, Mehta N, Sanchez R,Moss ME. The effect of two different coatings on the surface in-tegrity and softness of a tissue conditioner. J Prosthet Dent 2002 Feb; 87(2):153-157 https://doi.org/10.1067/mpr.2002.121407
  13. Aloul RK, Shen C. The influence of platicizer loss on the viscoelasticity of temporary soft liners. J Prosthodont 2002 Dec; 11(4):254-262 https://doi.org/10.1111/j.1532-849X.2002.00254.x
  14. Murata H, Hamada T, Harishini, Toki K, Nikawa H. Effect of addition of ethyl alcohol on gelation and viscoelasticity of tissue conditioners JOral Rehabil 2001 Jan; 28(1):48-54
  15. Casey DM, Scheer EC. surface treatment of a tenporary soft liner for increased longevity. J Prosthet Dent 1993; 63(3):318-324
  16. Kazanji MNM, Watkinson AC. Soft lining materials: their absoprtion of, and solubility in, artificial saliva. Br Dent J 1988;165:91-94 https://doi.org/10.1038/sj.bdj.4806516