A Study of Powder-Liquid V.L.C. Reline Materials. Characteristics of Before Curing.

Abstract

Recently,powder-liquid V.L.C.reline materials have become popular in Japan.Jinichi Obana advocated the direct reline method in 1971. We have studied this procedure and finally developed a new direct reline material-"REBARON

Fluidity and Hardening Time of Autopolymerized Denture Repair Acrylic Resin: A Comparison of Brush-on Technique and Mixing Technique

“…However, autopolymerized acrylic resins are frequently used in the mouth, and intra-oral polymerization is also performed to complete the hardening during denture adjustment. 5,12 Thus, further study on fluidity at a temperature of 37°C is needed. In addition, the properties of autopolymerized acrylic resins, such as hardness, adhesive strengths, accuracy, color stability, and bending strengths are also important factors to consider when selecting resins.…”

“…To measure the fluidity of both the mixing and brush-on techniques, a dental rheometer (amplitude torque 4 kg•cm; swing angles of amplitude 1.5±7.7°; Type B, Seiki, Japan) was used. 12 After the polymer and monomer of each resin were mixed for 10 seconds at the powder/liquid ratio shown in Table 1, the resin slurry (approximately 0.1 g) was applied on the platform of the rheometer for 10 seconds, and the fluidity was measured immediately until hardening occurred at room temperature (23±1°C humidity: 40-50%). Using the brush-on technique, the resin slurry was carried to the platform using 2 brushes.…”

“…The fluidity was evaluated as the decrease in the amplitude of the rheometer angles (the angle created where the tangential line of the amplitude curve intersected the central axis of the amplitude curve) every 30 seconds for 8 minutes. 12 The onset of hardening was determined when each amplitude decreased by 5%.…”

“…For satisfactory handling efficiency, the fluidity and hardening time of autopolymerized acrylic resins are especially important. 12 This study evaluated the fluidity and hardening time of autopolymerized acrylic resins applied using the brush-on technique and mixing technique.…”