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Setting characteristics of silicone-based resilient denture liners
Koichi Fujii1, Hiroyuki Arikawa, Takahito Kanie
1Department of Biomaterials Science, Field of Oral and Maxillofacial Rehabilitation, Kagoshima University Graduate School of Medical and Dental Science, Kagoshima 890-8544, Japan. fuji@dentb.hal.kagoshima-u.ac.jp
Dental Materials Journal
|February 8, 2005
Summary
This study analyzed silicone-based resilient denture liners, finding significant variations in setting characteristics like working time and extrusion force among brands. Understanding these differences is crucial for predictable clinical outcomes in dentistry.
Area of Science:
- Materials Science
- Biomaterials Engineering
- Dental Materials Science
Background:
- Silicone-based resilient denture liners are crucial for patient comfort and prosthesis function.
- Variability in setting characteristics can impact clinical performance and longevity.
- Standardized evaluation of these properties is essential for material selection.
Purpose of the Study:
- To investigate and quantify the setting characteristics of seven silicone-based resilient denture liners.
- To compare the working time, setting time, extrusion force, consistency, and film thickness development of different brands.
- To highlight the importance of understanding brand-specific setting behaviors.
Main Methods:
- Evaluated maximum extrusion force at a controlled flow rate (1 cm/min).
- Measured working time and setting time according to industry standards.
- Assessed material consistency using JIS T6519-2000 standards.
- Determined film thickness development under a normal load (1 kgf) at different temperatures (23°C and 37°C).
Main Results:
- Maximum extrusion force varied from 0.183 to 1.26 MPa.
- Working times ranged from 2.0 to 5.0 minutes, and setting times from 1.9 to 6.8 minutes.
- Material consistency ranged from 32.4 to 46.5 mm.
- Film thickness development varied significantly with temperature, taking 4.0–13.0 minutes at 23°C and 2.2–5.5 minutes at 37°C.
Conclusions:
- Significant differences in reaction rates and setting characteristics exist among silicone-based resilient denture liner brands.
- These variations necessitate careful consideration of material properties during clinical application.
- Selecting appropriate denture liner materials based on their specific setting behaviors is vital to avoid adverse clinical outcomes.