以纖維強化修補壓克力樹脂暫用固定局部義齒之斷裂負荷

Fracture Load of fiber-reinforced Repaired Acrylic Resin Provisional Fixed Partial Denture

10.7059/TJOMHS.200510.0075

吳育琦(Yu-Chi Wu)；王震乾(Jen-Chyan Wang)；羅秋萍(Cho-Ping Rong)；洪純正(Chun-Cheng Hung)

纖維 ； 壓克力樹脂 ； 修補 ； fiber ； acrylic resin ； repair

Taiwan Journal of Oral Medicine & Health Sciences

21卷2期（2005 / 10 / 01）

75 - 84

繁體中文

The purpose of this study was to evaluate the fracture load and fracture pattern of repaired acrylic resin provisional restoration, which had been reinforced with various fibers. It also aimed to investigate the relationships between type/surface treatment of fibers and fracture pattern/fracture strength of samples. In the experiment, first, 60 standardized 4-unit bridge samples n=60 over mandibular posterior region were fabricated with PMMA resin. Next, they were divided into 6 groups evenly. Besides 10 intact samples as control group, other 50 samples were repaired with resin or glass fiber with or without light curing/polyethylene fibers (with or without silane treatment). The fracture load of samples were tested with an universal testing machine and fracture pattern of all specimens were recorded. The fracture surfaces of selective samples were observed under SEM. All data were statistically analyzed using one-way ANOVA and Tukey's pairwise comparison test. The results indicated the fracture load of glass/polyethylene fiber-reinforced groups were statistically significant higher than acrylic resin repaired group (P＜0.05). However, there is no statistical difference between fiber-reinforced groups and intact sample groups. As for fracture pattern, most of all samples are display ”partial” fracture. The results of present study showed acrylic resin FPD reinforced with glass or polyethylene fibers do exhibit higher fracture loads as compared to samples without reinforcement. The way of surface treatment to fibers seems to be a dominate factor influence the fracture load of a long-span repaired provisional FPD.

The purpose of this study was to evaluate the fracture load and fracture pattern of repaired acrylic resin provisional restoration, which had been reinforced with various fibers. It also aimed to investigate the relationships between type/surface treatment of fibers and fracture pattern/fracture strength of samples. In the experiment, first, 60 standardized 4-unit bridge samples n=60 over mandibular posterior region were fabricated with PMMA resin. Next, they were divided into 6 groups evenly. Besides 10 intact samples as control group, other 50 samples were repaired with resin or glass fiber with or without light curing/polyethylene fibers (with or without silane treatment). The fracture load of samples were tested with an universal testing machine and fracture pattern of all specimens were recorded. The fracture surfaces of selective samples were observed under SEM. All data were statistically analyzed using one-way ANOVA and Tukey's pairwise comparison test. The results indicated the fracture load of glass/polyethylene fiber-reinforced groups were statistically significant higher than acrylic resin repaired group (P＜0.05). However, there is no statistical difference between fiber-reinforced groups and intact sample groups. As for fracture pattern, most of all samples are display ”partial” fracture. The results of present study showed acrylic resin FPD reinforced with glass or polyethylene fibers do exhibit higher fracture loads as compared to samples without reinforcement. The way of surface treatment to fibers seems to be a dominate factor influence the fracture load of a long-span repaired provisional FPD.