Department of Restorative Dentistry, Dental School, Rafsanjan University of Medical Sciences, Rafsanjan, Iran.
J Oral Rehabil. 2010 Jul;37(7):532-7. doi: 10.1111/j.1365-2842.2010.02073.x. Epub 2010 Feb 25.
The aim of this article was to report the results of an 18-month longitudinal randomized clinical trial that evaluated the clinical performance of microhybrid, packable and nanofilled resin composite restorations placed in Class I cavities of molar teeth. Three Class I resin composite restorations were placed in each of 35 patients. Each patient received one microhybrid ('Point 4'; Kerr, Orange, CA, USA), one packable ('Packable Premise'; Kerr, Orange, CA, USA) and one nanofilled ('Nanofilled Premise'; Kerr, Orange, CA, USA) resin composite restoration. Clinical evaluation was performed at baseline (2 weeks after placement), and after 6, 12 and 18 months after placement using modified Ryge criteria. No patients were lost from the study. At the final appointment (after 18 months), 95.4%, 93.7% and 96.2% respectively of the microhybrid ('Point 4'), packable ('Packable Premise' and nanofilled ('Nanofilled Premise') resin composite restorations received Alfa ratings. Regardless of the type of restorative material, no significant changes were observed in the modified Ryge criteria at the baseline and 18-month recalls (P <or=0.05). Three restorations (one from each group) exhibited post-operative sensitivity at the baseline and 6-month appointment. After 18 months, one packable resin composite restoration failed because of secondary caries, while secondary caries was not detected on any of the other restorations. The clinical performance of microhybrid ('Point 4'), packable ('Packable Premise') and nanofilled ('Nanofilled Premise') resin composite restorations was acceptable after 18 months. Further studies with longer follow-up periods are recommended to investigate the long-term survival of these restorations.
本文旨在报告一项为期 18 个月的纵向随机临床试验的结果，该试验评估了微混合、可压实和纳米填充树脂复合材料修复体在磨牙 I 类窝洞中的临床性能。在 35 名患者的每颗牙齿中分别放置了 3 种 I 类树脂复合材料修复体。每位患者分别接受一种微混合体（‘Point 4’； Kerr，Orange，CA，USA）、一种可压实体（‘Packable Premise’； Kerr，Orange，CA，USA）和一种纳米填充体（‘Nanofilled Premise’； Kerr，Orange，CA，USA）树脂复合材料修复体。临床评估在基线（放置后 2 周）、放置后 6、12 和 18 个月时使用改良 Ryge 标准进行。研究中没有患者脱落。在最终随访（18 个月后），微混合体（‘Point 4’）、可压实体（‘Packable Premise’）和纳米填充体（‘Nanofilled Premise’）树脂复合材料修复体的 Alfa 评级分别为 95.4%、93.7%和 96.2%。无论修复材料类型如何，在基线和 18 个月的随访中，改良 Ryge 标准均未观察到显著变化（P<or=0.05）。三组修复体（每组一个）在基线和 6 个月随访时均出现术后敏感。18 个月后，一个可压实树脂复合材料修复体因继发龋而失败，而其他修复体均未发现继发龋。微混合体（‘Point 4’）、可压实体（‘Packable Premise’）和纳米填充体（‘Nanofilled Premise’）树脂复合材料修复体在 18 个月后临床性能可接受。建议进行更长随访期的进一步研究，以调查这些修复体的长期存活率。
