Lawson N C, Radhakrishnan R, Givan D A, Ramp L C, Burgess J O
Oper Dent. 2015 Nov-Dec;40(6):594-602. doi: 10.2341/15-038-C. Epub 2015 Aug 3.
This study evaluated the two-year clinical performance and volumetric wear of a flowable resin composite compared to a conventional highly filled composite resin in Class I restorations.
In this single-center, single-blinded, comparator-controlled clinical study (Institutional Review Board approved), 120 carious teeth distributed in 60 patients were randomly assigned to four calibrated practitioners who placed occlusal restorations (n=60 flowable and n=60 conventional composite). Direct and indirect assessment at baseline, six months, one year, and two years occurred during which the modified Cvar and Ryge criteria were evaluated. Volumetric wear was determined by superimposition of profilometer scans of baseline and two-year casts.
At two years, there was no significant difference in anatomic form (p=0.80), color match (p=0.08), marginal adaptation (p=0.89), marginal discoloration (p=0.79), surface integrity (p=0.18), secondary caries (p=0.66), cold sensitivity (p=0.522), occlusal sensitivity (p=0.818), or volumetric wear (p=0.661) between materials. Both materials showed a decrease in all criteria except secondary caries (p=0.95) over time. Two-year mean volumetric wear was 3.16 ± 2.38 mm(3) for the flowable composite and 3.43 ± 2.50 mm(3) for the conventional composite.
The flowable and conventional composites used in this study have similar clinical efficacy after two years of service when placed as Class I occlusal restorations having isthmus widths less than one-half the intercuspal distance.
本研究评估了可流动树脂复合材料与传统高填料复合树脂在I类洞修复中两年的临床性能和体积磨损情况。
在这项单中心、单盲、对照比较的临床研究中（经机构审查委员会批准），将60名患者的120颗龋牙随机分配给4名经过校准的医生，由他们进行咬合面修复（60颗使用可流动复合材料，60颗使用传统复合材料）。在基线、6个月、1年和2年时进行直接和间接评估，期间评估改良的Cvar和Ryge标准。通过叠加基线和两年模型的轮廓仪扫描来确定体积磨损。
两年时，两种材料在解剖形态（p = 0.80）、颜色匹配（p = 0.08）、边缘适应性（p = 0.89）、边缘变色（p = 0.79）、表面完整性（p = 0.18）、继发龋（p = 0.66）、冷敏感（p = 0.522）、咬合敏感（p = 0.818）或体积磨损（p = 0.661）方面均无显著差异。随着时间的推移，除继发龋（p = 0.95）外，两种材料在所有标准上均有所下降。可流动复合材料的两年平均体积磨损为3.16±2.38 mm³，传统复合材料为3.43±2.50 mm³。
当作为峡部宽度小于牙尖间距离一半的I类咬合面修复体使用时，本研究中使用的可流动复合材料和传统复合材料在使用两年后具有相似的临床疗效。
