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KMID : 0362420020400030269
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Journal of Korean Academy of Prosthodontics
2002 Volume.40 No. 3 p.269 ~ p.274
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The rheology of the soft liner with 4-meta
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Park Hyun-Joo
Kim Chang-Whe
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Abstract
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Statement of Problem: The viscoelastic property is the most important and peculiar charac-teristics of soft liners. But the authorized standard is not certainly established than other den-tal materials.
Purpose of study: This study is aimed to compare the initial flow of gelation of the modified soft liner with 4-META with that of PMMA soft liners using dynamic method and evaluate the clinical acceptance of the trial materials.
Material and Method: This study consists of 3 groups with the given % of 4-META powder in the Coe soft liquid; 0%, 5%, 10%Each group was tested for 10 times to record the change of G’values during 3 hours. the gelation time was recorded by the oscillating rheometer with parallel plate with 1 rad/sec.
Results: As the results of this study, the gelation time of modified soft liner was elongated by 5 to 6 minutes.
Conclusion: The mean gelation time of modified soft liner could be within the range of clin-ically acceptable.
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