van Dijken Jan W V, Pallesen Ulla
Dental School, Faculty of Medicine, Umeå University, Umeå, Sweden.
Department of Odontology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
Eur J Oral Sci. 2017 Aug;125(4):303-309. doi: 10.1111/eos.12351. Epub 2017 May 19.
This randomized study evaluated a flowable resin composite bulk-fill technique in posterior restorations and compared it intraindividually with a conventional 2-mm resin composite layering technique over a 6-yr follow-up period. Thirty-eight pairs of Class II restorations and 15 pairs of Class I restorations were placed in 38 adults. In all cavities a single-step self-etch adhesive (Xeno V) was applied. In the first cavity of each pair, the flowable resin composite (SDR) was placed, in bulk increments of up to 4 mm. The occlusal part was completed with a layer of nanohybrid resin composite (Ceram X mono). In the second cavity of each pair, the hybrid resin composite was placed in 2-mm increments. The restorations were evaluated using slightly modified US Public Health Service (USPHS) criteria at baseline and then annually for a time period of 6 yr. After 6 yr, 72 Class II restorations and 26 Class I restorations could be evaluated. Six failed Class II molar restorations, three in each group, were observed, resulting in a success rate of 93.9% for all restorations and an annual failure rate (AFR) of 1.0% for both groups. The AFR for Class II and Class I restorations in both groups was 1.4% and 0%, respectively. The main reason for failure was resin composite fracture.
这项随机研究评估了一种可流动树脂复合材料的大块充填技术用于后牙修复，并在6年的随访期内将其与传统的2毫米树脂复合材料分层技术进行个体内比较。在38名成年人中放置了38对II类修复体和15对I类修复体。在所有窝洞中均应用了单步自酸蚀粘结剂（Xeno V）。在每对的第一个窝洞中，放置可流动树脂复合材料（SDR），每次大块增量可达4毫米。咬合部分用一层纳米混合树脂复合材料（Ceram X mono）完成。在每对的第二个窝洞中，以2毫米的增量放置混合树脂复合材料。在基线时使用略有修改的美国公共卫生服务（USPHS）标准对修复体进行评估，然后每年评估一次，为期6年。6年后，可对72个II类修复体和26个I类修复体进行评估。观察到6个II类磨牙修复体失败，每组3个，所有修复体的成功率为93.9%，两组的年失败率（AFR）均为1.0%。两组中II类和I类修复体的AFR分别为1.4%和0%。失败的主要原因是树脂复合材料断裂。
