Influence of thickness, boxing, and storage on the softness of resilient denture lining materials
| Autor: | Adrian C. Watkinson, M.N.M. Kazanji |
|---|---|
| Rok vydání: | 1988 |
| Předmět: |
Materials science
Time Factors Chemical Phenomena Surface Properties Denture Liners Acrylic Resins medicine.disease_cause Hardness Plasticizers Mold Forensic engineering medicine Resilient lining Dimethylpolysiloxanes Composite material Acrylic resin Chemistry Physical Water Denture lining material Elasticity Silicone Elastomers Evaluation Studies as Topic visual_art visual_art.visual_art_medium Methacrylates Oral Surgery |
| Zdroj: | The Journal of prosthetic dentistry. 59(6) |
| ISSN: | 0022-3913 |
| Popis: | T he clinical usefulness of soft denture lining material is well establishecl.‘-4 They may be used where the oral mucosa covering the denture-bearing area is of inadequate thickness or exhibits a reduced tolerance to the load applied to it and for patients with bruxism. Previous investigations into the softness of resilient lining materials have used different test methods.‘-’ The resilience of a soft material depends on its thickness and its inherent physical properties; therefore, the thickness of soft lining material is critical in the eventual success or failure in clinical use. The optimum thickness of the liner to be applied to the denture is controversial. It is impossible to recommend a standard thickness that can be used with all materials because a 1 mm thickness would be satisfactory with softer materials whereas a 3 mm thickness might be necessary with the harder materials.3 Other reports have stated that the liner should be at least 3 mm thick,” that the liner must be as thick as possible to be effective,” that the optimum benefit in softness is obtained with a lining of 2 to 3 mm thickness,8 and that using liner thickness of more than 2 mm does not materially increase the resilience.’ Previous studies have shown that water can be absorbed into the lining material and that the plasticizer or other constituent of the soft lining can be leached out, thus changing its physical properties.6s ** “3 l3 Fig. 1. Mold assembly for preparing samples. |
| Databáze: | OpenAIRE |
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