The rheology of the soft liner with 4-meta.
- Author:
Hyun Joo PARK
1
;
Chang Whe KIM
Author Information
1. Department of prosthodontics,Graduate school.Seoul National University, Korea. hjoop@yahoo.co.kr
- Publication Type:Original Article
- MeSH:
Polymethyl Methacrylate;
Rheology*
- From:The Journal of Korean Academy of Prosthodontics
2002;40(3):269-274
- CountryRepublic of Korea
- Language:English
-
Abstract:
STATEMETN 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.