Opdam N J, Roeters J J, Peters T C, Burgersdijk R C, Teunis M
TRIKON: Institute for Dental Clinical Research, University of Nijmegen, The Netherlands.
Dent Mater. 1996 Jul;12(4):230-5. doi: 10.1016/s0109-5641(96)80028-5.
Handling characteristics and adaptation modes of resin composites are important factors to achieve proper placement of the restorative materials. The present study was undertaken to assess the influence of the consistency of composite materials and the mode of application on voids and porosities in Class I adhesive restorations.
One hundred medium-sized Class I preparations with an adhesive design were restored with three composites of various consistencies using three different application modes. The restorations were sectioned, and each section of a restoration was inspected for the presence of voids. The total surface and the percentage of the cavity wall occupied by voids as well as the total number of voids in the sections were recorded. A Krusal-Wallis analysis of variance was carried out on the data. Differences between individual composite materials for each mode of application and between individual application modes for each composite material were analyzed using a Mann-Whitney U-test at p < 0.05.
The injection technique with a Hawe Neos Centrix tip was the best mode of application. Both smearing and the condensation of composites appeared to produce unreliable results. Furthermore, there were more problems with voids and wall adaptation for the thicker-consistency composite than for the medium- and thin-consistency material.
The thick-consistency composite had more problems related to voids and wall adaptation than the medium- and thin-consistency composites.
树脂复合材料的操作特性和适应模式是实现修复材料正确放置的重要因素。本研究旨在评估复合材料的稠度和应用方式对I类粘结修复体中孔隙和气孔的影响。
采用三种不同的应用方式，用三种不同稠度的复合材料修复100个具有粘结设计的中型I类预备体。将修复体切片，检查修复体的每一片是否存在孔隙。记录孔隙占据的总表面积、洞壁的孔隙百分比以及切片中的孔隙总数。对数据进行Kruskal-Wallis方差分析。使用Mann-Whitney U检验分析每种应用方式下各复合材料之间以及每种复合材料的各应用方式之间的差异，p < 0.05。
使用Hawe Neos Centrix尖端的注射技术是最佳应用方式。复合材料的涂抹和压实似乎都产生不可靠的结果。此外，稠度较高的复合材料在孔隙和洞壁贴合方面比稠度中等和较低的材料存在更多问题。
稠度较高的复合材料在孔隙和洞壁贴合方面比稠度中等和较低的复合材料存在更多问题。
