Research Article
Influence of Various Chemical Surface Treatments, Repair Materials, and Techniques on Transverse Strength of Thermoplastic Nylon Denture Base
Table 1
Materials used in this study.
| Material | Brand name | Manufacturer | Batch number | Application | Processing method |
| Polyamide resin (Nylon 12) | Valplast™ | Valplast International Corp., NY, USA | QTY: 10 | Denture base material | Injection moulding technique; heating to 288°C under pressure of 0.1 MPa. The screwed flask was placed in hot oven at 75°C for 12 min | Heat-polymerized PMMA acrylic resin | Vertex™ Rapid simplified | Vertex, Netherlands | XX131P11 | Repair material | Heat processed with a 500 W for 3 min | Autopolymerized PMMA acrylic resin | Vertex™ Castapress | Vertex, Netherlands | XY441P01 | Repair material | Dough material cure at 45°C for 15 min under pressure of 2 bars | Light-polymerized acrylic resin | Unifast LC | GC Corp., Japan | Powder: 0712033 Liquid: 0712122 | Repair material | The curing cycle was 470 N wave length for 10 min | Methyl methacrylate monomer | Vertex™ Rapid simplified | Vertex, Netherlands | XX131P11 | Surface treatment material | Butt joint surface swabbed with monomer for 60 s | Acetone (CH3)2CO | Acetone | MW:58.08, UK | 09200 | Surface treatment material | Butt joint surface swabbed with acetone for 30 s | Ethyl acetate (CH3COOC2H5) | Ethyl acetate | MW:88.11, UK | 09706 | Surface treatment material | Butt joint surface swabbed with ethyl acetate for 120 s | Isopropanol (C3H8O) | Isopropanol | MW:60.10, UK | 09200 | Surface treatment material | Butt joint surface swabbed with isopropanol for 5 s |
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PMMA: poly(methyl methacrylate).
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