Wattanawongpitak Nipaporn, Yoshikawa Takako, Burrow Michael F, Tagami Junji
Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate School, Tokyo Medical and Dental University, Japan.
Dent Mater J. 2006 Mar;25(1):45-50. doi: 10.4012/dmj.25.45.
This study evaluated the effect of two adhesive systems and four resin-based composites on the marginal sealing and cavity wall adaptation of restorations with different C-factors. Cylindrical cavities, 1 mm deep and 3 mm in diameter (C-factor=2.3) or 2 mm in diameter (C-factor=3), were prepared on superficial bovine dentin surfaces. The teeth were restored with Clearfil SE Bond or Single Bond adhesive system followed by hybrid (Photo Clearfil Bright or Z100) or flowable (Filtek Flow or Estelite LV) resin composite. After thermocycling, a dye penetration test was carried out to evaluate the degree of marginal leakage and cavity-wall gap formation. Cavity-wall gap formation increased when the C-factor increased from 2.3 to 3, except for Estelite LV resin composite. In terms of marginal sealing, Clearfil SE Bond showed better performance than Single Bond. When using Clearfil SE Bond, flowable composites improved resin composite adaptation to the cavity wall compared with hybrid composites.
本研究评估了两种粘结系统和四种树脂基复合材料对不同C因子修复体边缘封闭性和洞壁适应性的影响。在牛牙本质浅层表面制备深度为1mm、直径为3mm（C因子=2.3）或直径为2mm（C因子=3）的圆柱形窝洞。使用Clearfil SE Bond粘结系统或Single Bond粘结系统对牙齿进行粘结，随后分别使用混合型（Photo Clearfil Bright或Z100）或流动型（Filtek Flow或Estelite LV）树脂复合材料进行修复。热循环后，进行染料渗透试验以评估边缘微渗漏程度和洞壁间隙形成情况。除Estelite LV树脂复合材料外，当C因子从2.3增加到3时，洞壁间隙形成增加。在边缘封闭方面，Clearfil SE Bond粘结系统表现优于Single Bond粘结系统。使用Clearfil SE Bond粘结系统时，与混合型复合材料相比，流动型复合材料改善了树脂复合材料与洞壁的适应性。
