Fusayama A, Kohno A
Tsurumi University School of Dental Medicine, Yokohama, Japan.
J Prosthet Dent. 1989 Mar;61(3):293-6. doi: 10.1016/0022-3913(89)90131-5.
The marginal leakage of five adhesive composites placed in class V cavities extending into the root was examined by immersing the specimens in China ink after thermal cycling. Clearfil F II-initial bond, Silar-Scotch Bond, and Miradapt-D21 materials did not show leakage when all cavity walls were totally etched, whereas they showed leakage at the dentinal/cemental wall when only enamel was etched. In either conditions Clearfil F II-New Bond materials did not show leakage and Miradapt material showed leakage. Manipulative variables affected the seal of Clearfil F II-New Bond materials. Insertion later than 3 minutes after applying New Bond material induced microleakage. The use of pressure under a matrix did not affect the seal. Maintaining dryness for 3 minutes at the etched dentinal/cemental margin and 1 minute at the etched enamel margin was sufficient to prevent microleakage. Finishing before the initial polymerization of the composite or lining the whole axial wall caused microleakage.
通过热循环后将标本浸入中国墨水中，检测了放置在延伸至根部的Ⅴ类窝洞中的五种粘结性复合材料的边缘渗漏情况。当所有洞壁都被完全酸蚀时，Clearfil F II-初始粘结剂、Silar-3M Scotch Bond和Miradapt-D21材料未显示渗漏，而当仅酸蚀釉质时，它们在牙本质/牙骨质壁处显示渗漏。在任何一种情况下，Clearfil F II-新型粘结剂材料均未显示渗漏，而Miradapt材料显示渗漏。操作变量影响Clearfil F II-新型粘结剂材料的封闭性。在涂抹新型粘结剂材料后3分钟以后进行充填会导致微渗漏。在成形片下施加压力不影响封闭性。在酸蚀的牙本质/牙骨质边缘保持干燥3分钟，在酸蚀的釉质边缘保持干燥1分钟足以防止微渗漏。在复合材料初始聚合之前进行修整或衬里整个轴壁会导致微渗漏。
