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

Ryu Hyun-Ju; Bae Hanna-Eun-Kyong; Shim June-Sung; Lee Seok-Hyung; Moon Hong-Suk; Chung Mun-Kyu

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

대한치과보철학회지 = The journal of Korean academy of prosthodontics, v.42 no.6, 2004년, pp.641 - 646

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)

Abstract ▼ AI-Helper

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.

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However, there have been no experiments on the effects of voids on vis coelasticity of the tissue conditioner have been per formed. In this study it was hypothesised that vary ing the mixing method which produce differ ent quantities of voids may have influence on the viscoelasticity of a tissue conditioner. Coe-com-fort(Coe Lab.
This hypothetical consisten cy in viscoelasticity will enable reproduction of tissue conditioner mixture at varied vis tency of the material rather than depending on the expertise when mixing the material. Three mix ing methods were employed; manual, machine and vaccume mixed Coe-comfort were subjected to dynamic viscoelastic test at a given time intervals. Malstrom12 also have shown that the changes in viscoelasticity is a time dependant behaviour, therefore viscoelasticity have been measured over period of 72 hours.

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">Coecomfort. If any conclusion could be made from this study, it can be said that mixing methods have had no effects on the vicsoelasticity of Coe-Comfort, but future research is stron이y recommended with much reduced variabilities of testing con ditions.
physical property of Coe-comfort. The authors think this should be taken as primary pirate study and further investigation should follow to see the effects of mixing methods of Coe-com fort and other temporary soft lining materials in both vitro and vivo condition.
Also suitability of vacuum mixing have been questioned by Casey, 5z that only certain soft lining material have long enough working time for vacuum mixing. Therefore, it would have been helpful to under go further quantitative investigation on the voids in each mixing method specimens.

참고문헌 (16)

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