Hasegawa T, Itoh K, Yukitani W, Wakumoto S, Hisamitsu H
Department of Operative Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ohta-ward, Tokyo 145-8515, Japan.
Oper Dent. 2001 Nov-Dec;26(6):585-90.
Marginal adaptation of four resin composites (Clearfil APX, Estelite, Silux Plus and Z-100) cured with two xenon lamp units (Plasma Arc Curing System or Apollo 95E) or a halogen lamp unit (Witelite) were evaluated by measuring the wall-to-wall contraction gap width. A cylindrical dentin cavity (ø3 mm x 1.5 mm) prepared in an extracted human molar was treated with the Megabond system or an experimental bonding system consisting of 0.5 M EDTA, 35% GM and Clearfil Photo Bond prior to composite filling and was irradiated for three seconds (xenon lamp) or 40 seconds (halogen lamp). The contraction gap was measured with a light microscope. In addition, the curing capability of these three light sources was evaluated by measuring the curing depth of the composites filled in a split Teflon mold (ø4 mm x 8 mm). There was no marginal gap formation for Clearfil APX, Estelite and Silux Plus treated with the experimental bonding system regardless of the type of light sources. The curing depth of the xenon lamp was significantly higher than the halogen lamp, while marginal adaptation did not suffer any significant deterioration.
通过测量壁间收缩间隙宽度，评估了用两种氙灯装置（等离子弧固化系统或阿波罗95E）或一种卤素灯装置（Witelite）固化的四种树脂复合材料（Clearfil APX、Estelite、Silux Plus和Z - 100）的边缘适应性。在一颗拔除的人类磨牙上制备一个圆柱形牙本质洞（ø3毫米×1.5毫米），在复合树脂充填前，先用Megabond系统或由0.5M乙二胺四乙酸、35%GM和Clearfil光固化粘结剂组成的实验性粘结系统进行处理，然后用氙灯照射三秒或用卤素灯照射40秒。用光学显微镜测量收缩间隙。此外，通过测量填充在裂开的聚四氟乙烯模具（ø4毫米×8毫米）中的复合材料的固化深度，评估这三种光源的固化能力。无论光源类型如何，用实验性粘结系统处理的Clearfil APX、Estelite和Silux Plus均未形成边缘间隙。氙灯的固化深度明显高于卤素灯，而边缘适应性并未受到任何显著恶化。
