Department of Prosthodontics, University of Medicine and Pharmacy, Timisoara, Romania.
Department of Functional Sciences/Medical Informatics and Biostatistics, University of Medicine and Pharmacy, Timisoara, Romania.
J Prosthodont. 2019 Feb;28(2):e604-e608. doi: 10.1111/jopr.12751. Epub 2018 Jan 11.
Mechanical and optical studies of glass fiber composites have revealed great resistance and satisfactory bonds between the glass fibers and composite resins. This study aimed to evaluate the long-term survival of anterior and posterior direct glass fiber-reinforced composite (FRC) fixed partial dentures (FPD).
Twenty-three patients (9 men, 14 women) aged 18 to 67 received 23 d-FRC-FPDs. The frameworks of the FPDs were unidirectional pre-impregnated glass fibers (ever Stick C&B). The retainers were inlay composite resin retainers (n1 = 19) and composite resin wings (n2 = 4). The FPD that used inlay retainers and composite resin wing retainers was called the hybrid design. The mean follow-up period was 4.91 years with 12-month check-ups performed by two independent operators. The survival rates of the glass fiber FPDs were determined.
Six-year survival rates for the two types of FPDs were 94.7% for the inlay retainer type versus 25% for the hybrid type, with a statistically significant difference (log-rank test χ (1) = 11.422, p = 0.001). The inlay retainers were functional, with only one patient with a fracture line in the connector held by the glass fibers. Kaplan-Meier survival curves were drawn to show the difference between the two types of retainers.
According to the results of this study, these long-term interim FRC-FPD were resistant enough to allow mastication, minimally invasive and also esthetic, with inlay composite retainers as the better solution.
玻璃纤维复合材料的力学和光学研究表明，玻璃纤维与复合材料树脂之间具有很强的抵抗力和令人满意的结合力。本研究旨在评估前牙和后牙直接玻璃纤维增强复合材料（FRC）固定局部义齿（FPD）的长期存活率。
23 名年龄在 18 至 67 岁的患者（9 名男性，14 名女性）接受了 23 个 d-FRC-FPD。FPD 的框架为单向预浸渍玻璃纤维（ever Stick C&B）。固位体为嵌体复合树脂固位体（n1=19）和复合树脂翼板（n2=4）。使用嵌体固位体和复合树脂翼板的 FPD 称为混合设计。平均随访期为 4.91 年，由两名独立操作人员进行 12 个月的检查。确定玻璃纤维 FPD 的存活率。
两种 FPD 的 6 年存活率分别为嵌体固位体类型为 94.7%，混合类型为 25%，差异具有统计学意义（log-rank 检验 χ（1）=11.422，p=0.001）。嵌体固位体功能正常，仅有 1 名患者的玻璃纤维固定的连接器出现裂纹。绘制 Kaplan-Meier 生存曲线以显示两种固位体之间的差异。
根据本研究结果，这些长期临时 FRC-FPD 具有足够的耐咀嚼性、微创性和美观性，嵌体复合树脂固位体是更好的解决方案。
