Department of Dental Materials Science, ACTA, Universiteit van Amsterdam and Vrije Universiteit, The Netherlands.
Dent Mater. 2012 Sep;28(9):952-60. doi: 10.1016/j.dental.2012.04.007. Epub 2012 May 18.
The aim of this study was to test the new resin composite "NECO" as a material for indirect restorations clinically.
Forty-five patients were selected, of which 12 men and 33 women, with a mean age of 53. A total of 91 post-canine indirect resin composite NECO (Heraeus Kulzer, GmbH) restorations were placed, of which 86 full crowns and 5 onlays. Restorations were cemented with either resin cement (2bond2) or resin modified glass ionomer cement (Fuji Plus). The restorations were evaluated 1-2 weeks (baseline), 6 months, 1, 2, and 3 years after placement. At these recalls, success and survival data of the abutment teeth were documented. Survival was defined as the restoration being in situ, and success as the restoration in situ without complications.
After 3 years in service, the restorations showed success and survival rates of 84.8 and 91.6%, respectively. Cementation with Fuji Plus showed a trend (p=0.054) toward higher success (93.1%) and survival (100%) rates compared to cementation with 2bond2 cement which showed success and survival rates of 81.4 and 87.9% respectively. Restorations on vital teeth resulted in success and survival rates of 86.8 and 95.3% respectively, while restorations on endodontically treated teeth showed success and survival rates of 82.6 and 87.5%. This difference was not statistically significant (p=0.296).
Three-year success and survival rates of NECO restorations were 84.8 and 91.6%, respectively. The design of the preparation and restoration should take the material properties into account in order to enhance the clinical performance.
本研究旨在临床测试新型树脂复合材料“NECO”作为间接修复材料的性能。
选择了 45 名患者，其中 12 名男性，33 名女性，平均年龄为 53 岁。共放置了 91 个后牙间接树脂复合 NECO（贺利氏古莎有限公司）修复体，其中 86 个全冠和 5 个高嵌体。修复体分别用树脂粘接剂（2bond2）或树脂改性玻璃离子水门汀（Fuji Plus）粘接。修复体在放置后 1-2 周（基线）、6 个月、1 年、2 年和 3 年进行评估。在这些随访中，记录了基牙的成功和生存数据。生存定义为修复体在位，成功定义为修复体无并发症在位。
在使用 3 年后，修复体的成功率和存活率分别为 84.8%和 91.6%。与用 2bond2 粘接剂（成功率和存活率分别为 81.4%和 87.9%）相比，用 Fuji Plus 粘接剂的成功率（p=0.054）和存活率（100%）呈上升趋势。活髓牙上的修复体成功率和存活率分别为 86.8%和 95.3%，而根管治疗后的牙齿上的修复体成功率和存活率分别为 82.6%和 87.5%。差异无统计学意义（p=0.296）。
NECO 修复体的 3 年成功率和存活率分别为 84.8%和 91.6%。修复体的设计和制备应考虑材料性能，以提高临床性能。
